Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2016	Mar. 10, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Trading Symbol	CSTR
Entity Registrant Name	CAPSTAR FINANCIAL HOLDINGS, INC.
Entity Central Index Key	0001676479
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Public Float			$ 0
Entity Common Stock, Shares Outstanding		11,210,954

Consolidated Balance Sheets - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 9,133,502	$ 8,265,287
Interest-bearing deposits in financial institutions	54,322,823	85,189,846
Federal funds sold	16,654,481	6,729,708
Total cash and cash equivalents	80,110,806	100,184,841
Securities available for sale, at fair value	182,354,987	173,382,957
Securities held to maturity, fair value of $49,731,169, and $46,458,841 at December 31, 2016 and 2015, respectively	46,863,640	43,093,951
Loans held for sale	42,110,581	35,729,353
Loans and leases	935,250,703	808,396,064
Less allowance for loan and lease losses	(11,633,531)	(10,131,729)
Loans, net	923,617,172	798,264,335
Premises and equipment, net	5,350,226	4,896,447
Restricted equity securities	6,031,700	5,413,500
Accrued interest receivable	3,941,609	3,029,550
Goodwill	6,218,867	6,218,867
Core deposit intangible	70,912	125,045
Other real estate owned	0	216,254
Deferred tax assets	12,956,059	12,849,508
Bank owned life insurance	21,900,465	21,299,068
Other assets	2,148,039	2,096,603
Total assets	1,333,675,063	1,206,800,279
Deposits:
Non-interest-bearing	197,787,618	190,580,468
Interest-bearing	299,620,783	189,982,675
Savings and money market accounts	447,685,909	437,214,054
Time	183,627,943	220,683,113
Total deposits	1,128,722,253	1,038,460,310
Securities sold under repurchase agreements		3,755,000
Federal Home Loan Bank advances	55,000,000	45,000,000
Accrued interest payable	211,578	176,540
Other liabilities	10,533,836	10,822,322
Total liabilities	1,194,467,667	1,098,214,172
Shareholders’ equity:
Series A convertible preferred stock, $1 par value; 5,000,000 shares authorized; 878,049 and 1,609,756 shares issued and outstanding at December 31, 2016 and 2015, respectively	878,049	1,609,756
Common stock, voting, $1 par value; 20,000,000 shares authorized; 11,204,515 and 8,577,051 shares issued and outstanding at December 31, 2016 and 2015, respectively	11,204,515	8,577,051
Additional paid-in capital	116,142,894	95,277,969
Retained earnings	17,132,489	8,035,711
Accumulated other comprehensive loss, net of income tax	(6,150,551)	(4,914,380)
Total shareholders’ equity	139,207,396	108,586,107
Total liabilities and shareholders’ equity	$ 1,333,675,063	$ 1,206,800,279

Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Statement Of Financial Position [Abstract]
Securities held to maturity, fair value	$ 49,731,169	$ 46,458,841
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	878,049	1,609,756
Preferred stock, shares outstanding	878,049	1,609,756
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	11,204,515	8,577,051
Common stock, shares outstanding	11,204,515	8,577,051

Consolidated Statements of Income - USD ($)	12 Months Ended
Consolidated Statements of Income - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest income:
Loans, including fees	$ 40,212,379	$ 34,844,200	$ 32,802,823
Securities:
Taxable	3,447,684	4,152,507	4,138,453
Tax-exempt	1,158,061	1,080,008	914,635
Federal funds sold	19,159	18,480	24,964
Restricted equity securities	280,985	268,171	258,300
Interest-bearing deposits in financial institutions	276,488	140,367	147,569
Total interest income	45,394,756	40,503,733	38,286,744
Interest expense:
Interest-bearing deposits	1,489,470	748,082	599,309
Savings and money market accounts	2,859,064	2,732,985	2,753,858
Time deposits	2,084,771	2,031,267	2,322,462
Federal funds purchased	21,612	23,687	6,771
Securities sold under agreements to repurchase	1,311	14,625	26,496
Federal Home Loan Bank advances	475,308	179,866	162,000
Total interest expense	6,931,536	5,730,512	5,870,896
Net interest income	38,463,220	34,773,221	32,415,848
Provision for loan and lease losses	2,828,633	1,650,675	3,868,855
Net interest income after provision for loan and lease losses	35,634,587	33,122,546	28,546,993
Noninterest income:
Service charges on deposit accounts	1,108,153	909,698	1,079,931
Loan commitment fees	1,118,565	822,162	941,218
Net gain on sale of securities	120,873	55,023	13,457
Mortgage banking income	7,375,064	5,961,766	4,067,013
Other noninterest income	1,361,794	1,134,861	1,317,623
Total noninterest income	11,084,449	8,883,510	7,419,242
Noninterest expense:
Salaries and employee benefits	20,460,510	19,278,328	17,474,156
Data processing and software	2,372,854	2,316,707	2,566,371
Professional fees	1,553,680	1,469,031	1,357,368
Occupancy	1,498,405	1,538,157	1,511,687
Equipment	1,743,340	1,598,156	1,259,000
Regulatory fees	1,090,735	914,959	940,842
Other operating	4,409,324	3,861,435	3,452,681
Total noninterest expense	33,128,848	30,976,773	28,562,105
Income before income taxes	13,590,188	11,029,283	7,404,130
Income tax expense	4,493,410	3,469,847	2,412,386
Net income	$ 9,096,778	$ 7,559,436	$ 4,991,744
Per share information:
Basic net income per share of common stock	$ 0.98	$ 0.89	$ 0.59
Diluted net income per share of common stock	$ 0.81	$ 0.73	$ 0.49
Weighted average shares outstanding:
Basic	9,328,236	8,538,970	8,456,386
Diluted	11,212,026	10,381,895	10,281,044

Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 9,096,778	$ 7,559,436	$ 4,991,744
Unrealized gains (losses) on securities available for sale:
Unrealized holding gains (losses) arising during the period	(1,180,928)	(945,994)	3,497,157
Reclassification adjustment for gains included in net income	(120,873)	(55,023)	(13,457)
Tax effect	498,460	383,289	(1,333,909)
Net of tax	(803,341)	(617,728)	2,149,791
Unrealized losses on securities transferred to held to maturity:
Reclassification adjustment for losses included in net income	166,879	166,879	166,879
Tax effect	(63,898)	(63,898)	(63,898)
Net of tax	102,981	102,981	102,981
Unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) arising during the period	(330,209)	(1,485,799)	(3,695,434)
Reclassification adjustment for losses included in net income	416,148	37,181
Tax effect	(621,750)	(117,626)	1,414,982
Net of tax	(535,811)	(1,566,244)	(2,280,452)
Other comprehensive income (loss)	(1,236,171)	(2,080,991)	(27,680)
Comprehensive income	$ 7,860,607	$ 5,478,445	$ 4,964,064

Consolidated Statements of Changes in Shareholders' Equity - USD ($)	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2013	$ 96,190,925	$ 1,609,756	$ 8,353,087	$ 93,549,260	$ (4,515,469)	$ (2,805,709)
Beginning balance, shares at Dec. 31, 2013			8,353,087
Issuance of restricted common stock, net of forfeitures			$ 10,929	(10,929)
Issuance of restricted common stock, net of forfeitures, shares			10,929
Stock-based compensation expense	261,035			261,035
Excess tax benefit from stock compensation	12,349			12,349
Issuance of common stock pursuant to acquisition of Farmington Financial Group, LLC	1,148,000		$ 100,000	1,048,000
Issuance of common stock pursuant to acquisition of Farmington Financial Group, LLC, shares			100,000
Exercise of employee common stock options	75,000		$ 7,500	67,500
Exercise of employee common stock options, shares			7,500
Net income	4,991,744				4,991,744
Other Comprehensive loss	(27,680)					(27,680)
Ending balance at Dec. 31, 2014	102,651,373	1,609,756	$ 8,471,516	94,927,215	476,275	(2,833,389)
Ending balance, shares at Dec. 31, 2014			8,471,516
Issuance of restricted common stock, net of forfeitures			$ 104,535	(104,535)
Issuance of restricted common stock, net of forfeitures, shares			104,535
Stock-based compensation expense	438,003			438,003
Excess tax benefit from stock compensation	8,286			8,286
Exercise of employee common stock options	10,000		$ 1,000	9,000
Exercise of employee common stock options, shares			1,000
Net income	7,559,436				7,559,436
Other Comprehensive loss	(2,080,991)					(2,080,991)
Ending balance at Dec. 31, 2015	108,586,107	1,609,756	$ 8,577,051	95,277,969	8,035,711	(4,914,380)
Ending balance, shares at Dec. 31, 2015			8,577,051
Issuance of restricted common stock, net of forfeitures and withholdings to satisfy employee tax obligations	(33,623)		$ 99,560	(133,183)
Issuance of restricted common stock, net of forfeitures and withholdings to satisfy employee tax obligations, shares			99,560
Stock-based compensation expense	842,451			842,451
Excess tax benefit from stock compensation	61,217			61,217
Exercise of employee common stock options	$ 96,306		$ 8,125	88,181
Exercise of employee common stock options, shares	8,125		8,125
Issuance of common stock	$ 21,562,716		$ 1,688,049	19,874,667
Issuance of common stock, shares			1,688,049
Conversion of preferred stock		(731,707)	$ 731,707
Conversion of preferred stock, shares			731,707
Exercise of common stock warrants	231,615		$ 100,023	131,592
Exercise of common stock warrants, shares			100,023
Net income	9,096,778				9,096,778
Other Comprehensive loss	(1,236,171)					(1,236,171)
Ending balance at Dec. 31, 2016	$ 139,207,396	$ 878,049	$ 11,204,515	$ 116,142,894	$ 17,132,489	$ (6,150,551)
Ending balance, shares at Dec. 31, 2016			11,204,515

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
Consolidated Statements of Cash Flows - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 9,096,778	$ 7,559,436	$ 4,991,744
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for loan and lease losses	2,828,633	1,650,675	3,868,855
Accretion of discounts on acquired loans and deferred fees	(1,710,051)	(2,236,662)	(1,940,116)
Depreciation and amortization	422,478	505,520	625,040
Net amortization of premiums on investment securities	1,526,957	1,466,948	1,232,627
Securities gains, net	(120,873)	(55,023)	(13,457)
Mortgage banking income	(7,375,064)	(5,961,766)	(4,067,013)
Net (gain) loss on disposal of premises and equipment		(28,381)	836
Net (gain) loss on sale of other real estate owned	(157,184)	3,506	178,214
Stock-based compensation	842,451	438,004	261,035
Excess tax benefit from stock compensation	(61,217)	(8,286)	(12,349)
Deferred income tax (benefit) expense	(293,739)	506,672	461,694
Origination of loans held for sale	(522,036,970)	(422,323,041)	(253,099,211)
Proceeds from loans held for sale	523,030,806	407,941,300	245,891,363
Net (increase) decrease in accrued interest receivable and other assets	(1,538,577)	101,973	(879,093)
Net increase (decrease) in accrued interest payable and other liabilities	1,812,670	1,091,096	(4,483,619)
Net cash provided by (used in) operating activities	6,267,098	(9,348,029)	(6,983,450)
Activities in securities available for sale:
Purchases	(81,946,658)	(57,704,023)	(163,194,507)
Sales	46,700,357	90,445,352	161,603,143
Maturities, prepayments and calls	23,644,239	28,151,835	25,777,185
Activities in securities held to maturity:
Purchases	(5,336,200)		(2,512,122)
Maturities, prepayments and calls	1,655,537	833,198	704,041
Purchase of restricted equity securities	(618,200)	(348,550)	(170,100)
Net increase in loans	(126,471,419)	(95,883,666)	(85,892,972)
Purchase of premises and equipment	(813,401)	(30,778)	(302,609)
Proceeds from the sale of premises and equipment		233,387
Proceeds from sale of other real estate	373,438	354,840	790,161
Purchase of bank owned life insurance			(5,000,000)
Cash paid in acquisition of Farmington Financial Group, LLC			(3,000,000)
Net cash used in investing activities	(142,812,307)	(33,948,405)	(71,197,780)
Cash flows from financing activities:
Net increase in deposits	90,261,943	57,403,652	101,891,830
Proceeds from Federal Home Loan Bank advances	55,000,000	25,000,000
Payments on Federal Home Loan Bank advances	(45,000,000)
Issuance of common stock	(21,562,716)
Exercise of common stock options and warrants, net of repurchase of restricted shares	294,298	10,000	75,000
Excess tax benefit from stock compensation	61,217	8,286	12,349
Termination of interest rate swap agreement	(1,954,000)	(1,793,000)
Net decrease in repurchase agreements	(3,755,000)	(11,082,000)	5,343,000
Net cash provided by financing activities	116,471,174	69,546,938	107,322,179
Net increase (decrease) in cash and cash equivalents	(20,074,035)	26,250,504	29,140,949
Cash and cash equivalents at beginning of period	100,184,841	73,934,337	44,793,388
Cash and cash equivalents at end of period	80,110,806	100,184,841	73,934,337
Supplemental disclosures of cash paid:
Interest paid	6,896,499	5,768,230	5,926,316
Income taxes	4,113,908	2,081,723	1,768,256
Supplemental disclosures of noncash transactions:
Loans charged off to the allowance for loan and lease losses	1,451,570	3,205,671	1,147,442
Transfer of loans to other real estate	$ 0	$ 0	91,975
Common stock issued in acquisition of Farmington Financial Group, LLC			$ 1,148,000

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The consolidated financial statements as of and for the period ended December 31, 2016 include CapStar Financial Holdings, Inc. and it’s wholly owned subsidiary, CapStar Bank (the “Bank”, together referred to as the “Company”). Significant intercompany transactions and accounts are eliminated in consolidation. The financial statements as of and for the two year period ended December 31, 2015 only include CapStar Bank because the share exchange pursuant to which CapStar Financial Holdings, Inc., a bank holding company and a Tennessee corporation, became the parent company of CapStar Bank had not yet taken place. On February 5, 2016, CapStar Financial Holdings, Inc. acquired all of the Bank’s issued and outstanding shares of common stock, preferred stock, common stock options and warrants, and the Bank became the wholly owned subsidiary of CapStar Financial Holdings, Inc. (the “Share Exchange”).

The consolidated financial statements of the Company have been prepared in conformity with U.S. generally accepted accounting principles (GAAP) and conform to general practices within the banking industry.

Nature of Operations

Through the Bank, the Company provides full banking services to consumer and corporate customers located primarily in Davidson, Sumner, Williamson, and the surrounding counties in Tennessee. The Bank operates under a state bank charter and is a member of the Federal Reserve System. As a state member bank, the Bank is subject to regulations of the Tennessee Department of Financial Institutions, the Board of Governors of the Federal Reserve System (the “Federal Reserve”), and the Federal Deposit Insurance Corporation.

Initial Public Offering

On September 21, 2016, the Securities and Exchange Commission (SEC) declared effective our registration statement on Form S-1 registering the shares of our common stock. On September 27, 2016, we completed the initial public offering of 2,972,750 shares of our common stock. Of the 2,972,750 shares sold, 1,688,049 shares were sold by us and 1,284,701 shares were sold by certain selling shareholders. Of the 1,284,701 shares sold by certain selling shareholders, 731,707 were from preferred shares converted to common shares and 79,166 from the cashless exercise of 250,000 common share warrants. We received net proceeds of approximately $21.6 million from the offering, after deducting the underwriting discounts and commissions and offering expenses. We did not receive any proceeds from the sale of shares by the selling shareholders.

Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan and lease losses, determination of impairment of intangible assets, including goodwill, the valuation of our investment portfolio, deferred tax assets and estimated liabilities.

Cash and Cash Equivalents

For purposes of reporting cash flows, cash and cash equivalents include cash on hand, amounts due from banks, interest-bearing deposits in financial institutions and federal funds sold. Generally, federal funds sold are purchased and sold for one-day periods. The Company maintains deposits in excess of the federal insurance amounts with other financial institutions. Management makes deposits only with financial institutions it considers to be financially sound.

Securities

The Bank accounts for securities under the provisions of Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 320, Investments – Debt and Equity Securities. Under the provisions of FASB ASC 320, securities are to be classified in three categories and accounted for as follows:

Securities Held to Maturity - Debt securities are classified as held to maturity securities when the Bank has the positive intent and ability to hold the securities to maturity. Securities held to maturity are carried at amortized cost.

Trading Securities - Debt and equity securities that are bought and held principally for the purpose of selling them in the near term are classified as trading securities and reported at fair value, with unrealized gains and losses included in earnings. No securities have been classified as trading securities.

Securities Available for Sale - Debt and equity securities not classified as either held to maturity securities or trading securities are classified as available for sale securities. Securities available for sale are carried at estimated fair value with unrealized gains and losses excluded from earnings and reported as a separate component of shareholders’ equity in other comprehensive income (loss).

Interest income includes amortization of purchase premiums or discounts. Premiums and discounts on securities are amortized on the level-yield method without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Realized gains and losses from the sales of securities are recorded on the trade date and determined using the specific-identification method.

Management evaluates securities for other-than-temporary impairment (“OTTI”) on at least a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. For securities in an unrealized loss position, management considers the extent and duration of the unrealized loss, the financial condition and near-term prospects of the issuer and any collateral underlying the relevant security. Management also assesses whether it intends to sell, or it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through earnings. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: (1) OTTI related to credit loss, which must be recognized in the income statement and (2) OTTI related to other factors, which is recognized in other comprehensive income (loss). The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis. For equity securities, the entire amount of impairment is recognized through earnings.

Loans Held for Sale

Mortgage loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by outstanding commitments from investors. Net unrealized losses, if any, are recorded as a valuation allowance and charged to earnings. Realized gains and losses are recognized when legal title of the loan has transferred to the investor and sales proceeds have been received and are reflected in the accompanying statement of income in gain on sale of loans, net of related costs such as commission expenses. The Company does not securitize mortgage loans and does not retain the servicing for loans sold.

Loans

The Company has six classes of loans for financial reporting purposes: commercial real estate, consumer real estate, construction and land development, commercial and industrial, consumer and other. The appropriate classification is determined based on the underlying collateral utilized to secure each loan.

Commercial real estate loans are categorized as such based on investor exposures where repayment is largely dependent upon the operation, refinance, or sale of the underlying real estate. Commercial real estate also includes owner occupied commercial real estate.

Consumer real estate consists primarily of 1-4 family residential properties including home equity lines of credit.

Construction and land development loans include loans where the repayment is dependent on the successful operation of the related real estate project. Construction and land development loans include 1-4 family construction projects and commercial construction endeavors such as warehouses, apartments, office and retail space and land acquisition and development.

Commercial and industrial loans include loans to business enterprises issued for commercial, industrial and/or other professional purposes.

Consumer loans include all loans issued to individuals not included in the consumer real estate class.

Other loans include all loans not included in the classes of loans above and leases.

Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal balance outstanding, net of purchase premiums and discounts, deferred loan fees and costs, and an allowance for loan and lease losses. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized in interest income using the level-yield method without anticipating prepayments.

The accrual of interest on loans is discontinued at the time the loan is 90 days past due unless the credit is well secured and in process of collection. Consumer loans and any accrued interest is typically charged off no later than 180 days past due. Past-due status is based on contractual terms of the loan. In all cases, loans are placed on nonaccrual or charged off at an earlier date if collection of principal or interest is considered doubtful and collection is highly questionable. Amortization of deferred loan fees is discontinued when a loan is placed on nonaccrual status.

All interest accrued but not received for loans placed on nonaccrual is reversed against interest income. Interest received on such loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual status. Under the cost-recovery method, interest income is not recognized until the loan balance is reduced to zero. Under the cash-basis method, interest income is recorded when the payment is received in cash. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. Loans can also be returned to accrual status when they become well secured and in the process of collection.

Acquired Loans

Acquired loans are accounted for under the acquisition method of accounting. The acquired loans are recorded at their estimated fair values as of the acquisition date. Fair value of acquired loans is determined using a discounted cash flow model based on assumptions regarding the amount and timing of principal and interest payments, estimated prepayments, estimated default rates, estimated loss severity in the event of defaults, and current market rates. Estimated credit losses are included in the determination of fair value; therefore, an allowance for loan and lease losses is not recorded on the acquisition date.

An acquired loan is considered impaired when there is evidence of credit deterioration since origination and it is probable at the date of acquisition that the Bank will be unable to collect all contractually required payments.

Acquired impaired loans are accounted for individually or aggregated into pools of loans based on common risk characteristics such as loan type and risk rating. The Company estimates the amount and timing of expected cash flows for each loan or pool, and the expected cash flows in excess of amount paid (fair value) is recorded as interest income over the remaining life of the loan or pool (accretable yield). The excess of the loan’s or pool’s contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan or pool, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded as a provision for loan and lease losses. If the present value of expected cash flows is greater than the carrying amount, it is recognized as part of future interest income.

Acquired non-impaired loans are recorded at their initial fair value and adjusted for subsequent advances, pay downs, amortization or accretion of any premium or discount on purchase, charge-offs and additional provisioning that may be required.

Allowance for Loan and Lease Losses

The allowance for loan and lease losses (“ALLL”) is maintained at a level that management believes to be adequate to absorb expected loan and lease losses inherent in the loan portfolio as of the balance sheet date. The allowance for loan and lease losses is a valuation allowance for estimated credit losses inherent in the loan and lease portfolio, increased by the provision for loan and lease losses and decreased by charge-offs, net of recoveries. Quarterly, the Company estimates the allowance required using peer group loss experience, the nature and volume of the portfolio, information about specific borrower situations and estimated collateral values, economic conditions, and other factors. The Company’s historical loss experience is based on the actual loss history by class of loan for comparable peer institutions due to the Company’s limited loss history. Allocations of the allowance may be made for specific loans, but the entire allowance is available for any loan that, in management’s judgment, should be charged off. Loan and lease losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries are credited to the allowance for loan and lease losses.

The Company also considers the results of the external independent loan review when assessing the adequacy of the allowance and incorporates relevant loan review results in the loan impairment and overall adequacy of allowance determinations. Furthermore, regulatory agencies periodically review the Company’s allowance for loan and lease losses and may require the Company to record adjustments to the allowance based on their judgment of information available to them at the time of their examinations.

Additional considerations are included in the determination of the adequacy of the allowance based on the continuous review conducted by relationship managers and credit department personnel. The Company’s loan policy requires that each customer relationship wherein total exposure exceeds $1.5 million be subject to a formal credit review at least annually. Should these reviews identify potential collection concerns, appropriate adjustments to the allowance may be made.

The allowance consists of specific and general components as discussed below. While the allowance consists of separate components, these terms are primarily used to describe a process. Both portions of the allowance are available to provide for inherent losses in the entire portfolio.

Specific Component

The specific component relates to loans that are individually determined to be impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Loans for which the terms have been modified resulting in a concession, and for which the borrower is experiencing financial difficulties, are considered troubled debt restructurings (“TDRs”) and classified as impaired.

Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed.

Loans meeting any of the following criteria are individually evaluated for impairment: risk rated substandard (as defined in Note 4), on non-accrual status or past due greater than 90 days. If a loan is impaired, a portion of the allowance is allocated based on the present value of estimated future cash flows using the loan’s existing rate or at the fair value of collateral less costs to sell if repayment is expected solely from the collateral. Changes to the valuation allowance are recorded as a component of the provision for loan and lease losses.

TDRs are individually evaluated for impairment and included in the separately identified impairment disclosures. TDRs are measured at the present value of estimated future cash flows using the loan’s effective rate at inception. If a TDR is considered to be a collateral dependent loan, the loan is reported, net, at the fair value of the collateral less costs to sell.

General Component

The general component of the allowance for loan and lease losses covers loans that are collectively evaluated for impairment. Large groups of homogeneous loans are collectively evaluated for impairment, and accordingly, they are not included in the separately identified impairment disclosures. The general allowance component also includes loans that are individually identified for impairment evaluation but are not considered impaired. The general component is based on historical loss experience adjusted for current factors. Due to the Company’s limited loss history, the historical loss experience is based on the actual loss history by class of loan for comparable peer institutions.

The Company utilized a 24 quarter look-back period as of December 31, 2015. Subsequently, the Company increased its look-back period for a total of 28 quarters as of December 31, 2016. In the current economic environment, management believes the extension of the look-back period was ncessary in order to capture sufficient loss observations to develop a reliable loss estimate of credit losses. This extension of the historical look-back period to capture the historical loss experience of peer banks was applied to all classes and segments of our loan portfolio.

The actual loss experience is supplemented with other environmental factors that capture changes in trends, conditions, and other relevant factors that may cause estimated credit losses as of the evaluation date to differ from historical loss experience. The allocation for environmental factors is by nature subjective. These amounts represent estimated probable inherent credit losses, which exist but have not been captured in the historical loss experience. The environmental factors include consideration of the following: changes in lending policies and procedures, economic conditions, nature and volume of the portfolio, experience of lending management, volume and severity of past due loans, quality of the loan review system, value of underlying collateral for collateral dependent loans, concentrations, and other external factors.

Transfers of Financial Assets

Transfers of financial assets are accounted for as sales, when control over the assets has been relinquished. Control over transferred assets is deemed to be surrendered when the assets have been isolated from the Bank, the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.

Premises and Equipment

Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is computed principally by the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized by the straight-line method based on the shorter of the asset lives or the expected lease terms. Useful lives for premises and equipment range from three to thirty-nine years.

These assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value.

The Company is the lessee with respect to several office locations. All such leases are accounted for as operating leases within the accompanying financial statements. These leases include rent escalation clauses. The Company expenses the costs associated with these escalating payments over the life of the expected lease term using the straight-line method. As of December 31, 2016, the deferred liability associated with these escalating rentals was approximately $161,000 and is included in other liabilities in the accompanying balance sheets.

Bank Owned Life Insurance

The Bank has purchased life insurance policies on certain key executives. Bank owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement.

Securities Sold under Agreements to Repurchase

The Bank enters into sales of securities under agreements to repurchase at a specified future date. Such repurchase agreements are considered financing arrangements and, accordingly, the obligation to repurchase assets sold is reflected as a liability in the balance sheets of the Bank. Repurchase agreements are collateralized by debt securities which are owned and under the control of the Bank.

Goodwill and Other Intangible Assets

Goodwill resulting from business combinations is generally determined as the excess of the fair value of the consideration transferred, plus the fair value of any noncontrolling interests in the acquiree, over the fair value of the net assets acquired and liabilities assumed as of the acquisition date. Goodwill and intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but tested for impairment at least annually or more frequently if events and circumstances exists that indicate that a goodwill impairment test should be performed. The Company has selected October 31st as the date to perform the annual impairment test. Intangible assets with definite useful lives are amortized over their estimated useful lives to their estimated residual values. Goodwill is the only intangible asset with an indefinite life on the balance sheet.

Other intangible assets consist of core deposit intangible assets arising from whole bank acquisitions and are amortized on an accelerated method over their estimated useful lives, which range from five to six years.

Other Real Estate Owned

Other real estate owned (“OREO”) includes assets that have been acquired in satisfaction of debt through foreclosure and are recorded at estimated fair value less the estimated cost of disposition. Fair value is based on independent appraisals and other relevant factors. Valuation adjustments required at foreclosure are charged to the allowance for loan and lease losses. Subsequent to foreclosure, additional losses resulting from the periodic revaluation of the property are charged to other real estate expense. Costs of operating and maintaining the properties and any gains or losses recognized on disposition are also included in other real estate expense. Improvements made to properties are capitalized if the expenditures are expected to be recovered upon the sale of the properties.

Restricted Equity Securities

The Bank is a member of the FHLB system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest additional amounts. FHLB stock is carried at cost, classified as a restricted equity security, and periodically evaluated for impairment based on an assessment of the ultimate recovery of par value. Both cash and stock dividends are reported as income.

The Bank is also a member of the Federal Reserve System, and as such, holds stock of the Federal Reserve Bank of Atlanta (“Federal Reserve Bank”). Federal Reserve Bank stock is carried at cost, classified as a restricted equity security, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income.

Income Taxes

Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized.

A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. The Company’s tax returns remain open to audit under the statute of limitations by the IRS and various states for the years ended December 31, 2013 through 2016. It is the Company’s policy to recognize interest and/or penalties related to income tax matters in income tax expense.

Stock-Based Compensation

Stock-based compensation expense is recognized based on the fair value of the portion of stock-based payment awards that are ultimately expected to vest, reduced for estimated forfeitures. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods, if actual forfeitures differ from those estimates. A Black-Scholes model is utilized to estimate the fair value of stock options, while the market price of the Company’s common stock at the date of grant is used for restricted stock awards. Compensation expense is recognized over the required service period, generally defined as the vesting period. For awards with graded vesting, compensation expense is recognized on a straight-line basis over the requisite service period for the entire award. For awards with performance vesting criteria, anticipated performance is projected to determine the number of awards expected to vest, and the corresponding aggregate expense is adjusted to reflect the elapsed portion of the performance period.

Advertising Costs

Advertising costs are expensed as incurred. Advertising expense was approximately $252,000, $310,000 and $460,000 for the years ended December 31, 2016, 2015 and 2014, respectively.

Off-Balance Sheet Financial Instruments

In the ordinary course of business, the Bank has entered into off-balance-sheet financial instruments consisting of commitments to extend credit and standby letters of credit. Such financial instruments are recorded in the financial statements when they are funded or related fees are incurred or received.

Derivative Instruments

Derivative instruments are recorded on the balance sheet at their respective fair values. The accounting for changes in fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship. If the derivative instrument is not designated as a hedge, the gain or loss on the derivative instrument is recognized in earnings in the period of change.

The Bank enters into interest rate swaps (“swaps”) to facilitate customer transactions and meet their financing needs. Upon entering into these arrangements to meet customer needs, the Bank enters into offsetting positions with large U.S. financial institutions in order to minimize risk to the Bank. These swaps are derivatives, but are not designated as hedging instruments.

The Bank also has forward starting cash flow hedges to manage its future interest rate exposure. These derivative contracts have been designated as hedges and, as such, changes in the fair value of these derivative instruments are recorded in other comprehensive income (loss). The Bank prepares written hedge documentation for all derivatives which are designated as hedges. The written hedge documentation includes identification of, among other items, the risk management objective, hedging instrument, hedged item and methodologies for assessing and measuring hedge effectiveness and ineffectiveness, along with support for management’s assertion that the hedge will be highly effective.

The effective portion of the changes in the fair value of a derivative that is highly effective and that has been designated and qualifies as a cash flow hedge are initially recorded in accumulated other comprehensive income (loss) and subsequently reclassified into earnings in the same period during which the hedged item affects earnings. The ineffective portion, if any, would be recognized in current period earnings.

The Bank discontinues hedge accounting when it determines that the derivative is no longer effective in offsetting changes in the cash flows of the hedged item, the derivative is settled or terminates, or treatment of the derivative as a hedge is no longer appropriate or intended. When hedge accounting is discontinued, subsequent changes in fair value of the derivative are recorded as non-interest income. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income (loss) are amortized into earnings over the same periods which the hedged transactions will affect earnings.

Cash flows resulting from the derivative financial instruments that are accounted for as hedges are classified in the cash flow statement in the same category as the cash flows of the items being hedged.

Comprehensive Income (Loss)

Comprehensive income (loss) consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities available for sale, unrealized gains and losses on securities transferred to held to maturity and unrealized gains and losses on cash flow hedges which are also recognized as separate components of equity.

Fair Value Measurements

Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in a separate note. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect these estimates.

Restriction on Cash Balances

Regulation D of the Federal Reserve Act requires that banks maintain reserve balances with their applicable Federal Reserve Bank based principally on the type and amount of their deposits. The Bank was required to have a reserve balance of $40,902,000 and $27,105,000 at December 31, 2016 and 2015, respectively. The reserve balance that the Bank must maintain at the Federal Reserve Bank of Atlanta is included in interest-bearing deposits in financial institutions as of December 31, 2016 and 2015.

Subsequent Events

The Company has evaluated subsequent events for recognition and disclosure through March 13, 2017, which is the date the financial statements were available to be issued.

Income Per Common Share

Basic net income per share available to common stockholders (“EPS”) is computed by dividing net income available to common stockholders by the weighted average shares of common stock outstanding for the period. Diluted EPS reflects the dilution that could occur if securities or other contracts to issue common stock were exercised or converted. The difference between basic and diluted weighted average shares outstanding is attributable to convertible preferred stock, common stock options and warrants. The dilutive effect of outstanding convertible preferred stock, common stock options and warrants is reflected in diluted EPS by application of the treasury stock method.

For the years ended December 31, 2016, 2015, and 2014 respectively, approximately 0, 203,000 and 133,000 of antidilutive stock options were excluded from the diluted earnings per share of common stock calculation under the treasury stock method.

The following is a summary of the basic and diluted earnings per share calculation for each of the following years (in thousands except share data):

	Year Ended December 31,
	2016		2015		2014
Basic net income per share calculation:
Numerator – Net income	$	9,096,778	$	7,559,436	$	4,991,744
Denominator – Average shares of common stock outstanding		9,328,236		8,538,970		8,456,386
Basic net income per share	$	0.98	$	0.89	$	0.59
Diluted net income per share calculation:
Numerator – Net income	$	9,096,778	$	7,559,436	$	4,991,744
Denominator – Average shares of common stock outstanding		9,328,236		8,538,970		8,456,386
Dilutive shares contingently issuable		1,883,790		1,842,925		1,824,658
Average diluted shares of common stock outstanding		11,212,026		10,381,895		10,281,044
Diluted net income per share	$	0.81	$	0.73	$	0.49

Recently Issued Accounting Pronouncements

ASU 2014-09, Revenue from Contracts with Customers

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers, which outlines a single comprehensive model for use in accounting for revenue arising from contracts with customers, and supersedes most current revenue recognition guidance. The ASU was originally effective for fiscal years and interim periods beginning after December 15, 2016. In August 2015, FASB issued ASU 2015-14 which delays the effective date. The effective date will be annual reporting periods beginning after December 15, 2017, and the interim periods within that year. The Company is evaluating the potential impact of adoption of ASU 2014-09.

ASU 2016-02, Leases

In February 2016, the FASB issued guidance in the form of a FASB ASU, “Leases”. The new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain optional practical expedients available. The new standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is evaluating the impact of the pending adoption of the new standard on the Company’s financial statements and disclosures.

ASU 2016-09, Compensation – Stock Compensation

In March 2016, the FASB amended existing guidance to simplify the accounting for share-based payment award transactions, including: (a) income tax consequences; (b) classification of awards as either equity or liabilities; (c) classification on the statement of cash flows; and (d) policy election to estimate the number of awards that are expected to vest (current GAAP) or account for forfeitures when they occur. Amendments related to the timing of when excess tax benefits are recognized, minimum statutory withholding requirements, forfeitures, and intrinsic value should be applied using a modified retrospective transition method by means of a cumulative-effect adjustment to equity as of the beginning of the period in which the guidance is adopted. Amendments related to the presentation of employee taxes paid on the statement of cash flows when an employer withholds shares to meet the minimum statutory withholding requirement should be applied retrospectively. Amendments requiring recognition of excess tax benefits and tax deficiencies in the income statement and the practical expedient for estimating the expected term should be applied prospectively. An entity may elect to apply the amendments related to the presentation of excess tax benefits on the statement of cash flows using either a prospective transition method or a retrospective transition method. The amendments are effective for public companies for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The adoption of this standard is not expected to have a material effect on the Company’s operating results or financial condition.

ASU 2016-13, Financial Instruments – Credit Losses

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses, which outlines changes to replace the incurred loss impairment methodology currently in place with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to estimate credit losses. The ASU is effective for fiscal years and interim periods beginning after December 15, 2019. The adoption of ASU 2016-13 is expected to have a significant impact on the Bank’s operations and financial statements.

Business Combinations

12 Months Ended

Dec. 31, 2016

Business Combinations [Abstract]

Business Combinations

NOTE 2 – BUSINESS COMBINATIONS

On February 3, 2014, the Bank completed its acquisition of Farmington Financial Group, LLC (Farmington), a Tennessee limited liability company headquartered in Nashville, Tennessee. Farmington primarily originates residential real estate loans that are sold in the secondary market. The Bank acquired all the assets and liabilities of Farmington for approximately $6.4 million in total consideration. The operations of Farmington are included in the Bank’s financial statements beginning February 3, 2014. Pre-acquisition amounts in 2014 are not significant.

Goodwill of approximately $6.2 million arising from the acquisition consisted largely of synergies and the cost savings resulting from the combining of the operations of the companies. At the time of acquisition, the amount of goodwill that was expected to be deductible for income taxes purposes was approximately $4.0 million. The following table summarizes the consideration paid for Farmington and the amounts of the assets acquired and liabilities assumed recognized at the acquisition date (in thousands):

Consideration:
Cash	$	3,000
Equity instruments		1,148
Contingent consideration		2,206
Fair value of total consideration transferred	$	6,354
Fair value of assets acquired:
Loans held for sale	$	4,111
Premises and equipment		102
Total assets acquired		4,213
Fair value of liabilities assumed:
Warehouse line of credit		3,996
Other liabilities		31
Total liabilities assumed		4,027
Total identifiable net assets acquired		186
Goodwill		6,168
	$	6,354

The fair value of loans held for sale was determined based on contracts with investors. Fair values for all other assets and liabilities assumed was based upon book value, which approximated fair value. Contingent consideration is based on a five year earn-out, payable annually. As of the acquisition date the total contingent consideration payable was estimated to range from $2.0 million to $4.2 million on an undiscounted basis. The fair value of contingent consideration is based on an income approach utilizing a discounted cash flow model.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1490-128463

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1486-128463

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1524-128463

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7000-128479

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4922-128472

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4934-128472

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4926-128472

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 4A
-URI http://asc.fasb.org/extlink&oid=73530397&loc=SL65897772-128472

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1383-128463

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6996-128479

+ Details

Investment Securities

12 Months Ended

Dec. 31, 2016

Investments Debt And Equity Securities [Abstract]

Investment Securities

NOTE 3 – INVESTMENT SECURITIES

Investment securities have been classified in the balance sheet according to management’s intent. The Company’s classification of securities at December 31, 2016 and 2015 was as follows (in thousands):

	December 31, 2016									December 31, 2015
	Amortized Cost		Gross unrealized gains		Gross unrealized (losses)			Estimated fair value		Amortized Cost		Gross unrealized gains		Gross unrealized (losses)			Estimated fair value
Securities available for sale:
U. S. government agency securities	$	9,517	$	—	$	(143	)	$	9,374	$	19,562	$	16	$	(36	)	$	19,542
State and municipal securities		28,480		65		(632	)		27,913		13,776		99		(7	)		13,868
Mortgage-backed securities		126,637		17		(2,059	)		124,595		119,828		13		(1,461	)		118,380
Asset-backed securities		21,620		—		(1,147	)		20,473		22,814		—		(1,221	)		21,593
Total	$	186,254	$	82	$	(3,981	)	$	182,355	$	175,980	$	128	$	(2,725	)	$	173,383
Securities held to maturity:
State and municipal securities	$	36,842	$	2,784	$	—		$	39,626	$	37,005	$	3,245	$	—		$	40,250
Mortgage-backed securities		4,687		79		—			4,766		6,089		120		—			6,209
Other debt securities		5,335		11		(7	)		5,339		—		—		—			—
Total	$	46,864	$	2,874	$	(7	)	$	49,731	$	43,094	$	3,365	$	—		$	46,459

During the third quarter of 2013, approximately $36,789,000 of available for sale securities were transferred to the held to maturity category. The transfers of the securities into the held to maturity category from the available for sale category were made at fair value at the date of transfer. The unrealized holding loss at the date of the transfer continues to be reported in a separate component of shareholders’ equity and is being amortized over the remaining life of the securities as an adjustment of yield in a manner consistent with the amortization of the premiums and discounts.

The amortized cost and fair value of debt and equity securities at December 31, 2016, by contractual maturity, are shown below (in thousands). Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.

	Available-for-sale				Held-to-maturity
	Amortized cost		Estimated fair value		Amortized cost		Estimated fair value
Due one to five years	$	11,425	$	11,319	$	17,628	$	18,500
Due five to ten years		21,077		20,841		16,732		17,761
Due beyond ten years		5,495		5,127		7,817		8,704
Mortgage-backed securities		126,637		124,595		4,687		4,766
Asset-backed securities		21,620		20,473		—		—
	$	186,254	$	182,355	$	46,864	$	49,731

Results from sales of debt and equity securities were as follows (in thousands):

	Year ended December 31
	2016			2015			2014
Available for sale:
Proceeds from sales of securities	$	46,700		$	90,445		$	161,603
Gross realized gains		244			261			520
Gross realized losses		(123	)		(206	)		(507	)

Securities with a carrying value of $133,297,000 and $146,921,000 at December 31, 2016 and 2015, respectively, were pledged to collateralize public deposits, securities sold under repurchase agreements, derivative positions and Federal Home Loan Bank advances.

At December 31, 2016 and 2015, there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of shareholders’ equity.

The following tables show the Company’s securities with unrealized losses, aggregated by major security type and length of time in a continuous unrealized loss position (in thousands):

	Less than 12 months					12 months or more					Total
December 31, 2016	Estimated fair value		Gross unrealized losses			Estimated fair value		Gross unrealized losses			Estimated fair value		Gross unrealized losses
U. S. government agency securities	$	9,374	$	(143	)	$	—	$	—		$	9,374	$	(143	)
State and municipal securities		20,279		(632	)		—		—			20,279		(632	)
Mortgage-backed securities		110,563		(1,955	)		4,150		(104	)		114,713		(2,059	)
Asset-backed securities		—		—			20,473		(1,147	)		20,473		(1,147	)
Other debt securities		2,029		(7	)		—		—			2,029		(7	)
Total temporarily impaired securities	$	142,245	$	(2,737	)	$	24,623	$	(1,251	)	$	166,868	$	(3,988	)
December 31, 2015
U. S. government agency securities	$	13,100	$	(36	)	$	—	$	—		$	13,100	$	(36	)
State and municipal securities		3,099		(7	)		—		—			3,099		(7	)
Mortgage-backed securities		97,154		(1,068	)		16,260		(393	)		113,414		(1,461	)
Asset-backed securities		—		—			21,593		(1,221	)		21,593		(1,221	)
Total temporarily impaired securities	$	113,353	$	(1,111	)	$	37,853	$	(1,614	)	$	151,206	$	(2,725	)

Declines in the fair value of securities below their cost that are deemed to be other-than-temporary are reflected in earnings as realized losses to the extent the impairment is related to credit losses. The amount of the impairment of available for sale securities related to other factors is recognized in other comprehensive income (loss). In estimating other-than-temporary impairment losses, management considers, among other things, the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer and the intent and ability of the Company to hold the security for a period of time sufficient to allow for any anticipated recovery in fair value. The unrealized losses shown above are primarily due to increases in market rates over the yields available at the time of purchase of the underlying securities and not credit quality. Because the Company does not intend to sell these securities and it is more likely than not that the Company will not be required to sell the securities before recovery of their amortized cost bases, which may be maturity, the Company does not consider these securities to be other than temporarily impaired at December 31, 2016. There were no other-than-temporary impairments for the years ended December 31, 2016 and 2015.

- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References + Details

Loans and Allowance for Loan and Lease Losses

12 Months Ended

Dec. 31, 2016

Receivables [Abstract]

Loans and Allowance for Loan and Lease Losses

NOTE 4 – LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES

Loans at December 31, 2016 and 2015 were as follows (in thousands):

	December 31, 2016			December 31, 2015
Commercial real estate	$	302,322		$	251,197
Consumer real estate		97,015			93,785
Construction and land development		94,491			52,522
Commercial and industrial		379,620			353,442
Consumer		5,974			8,668
Other		56,796			50,197
Total		936,218			809,811
Less net unearned income		(967	)		(1,415	)
		935,251			808,396
Allowance for loan and lease losses		(11,634	)		(10,132	)
	$	923,617		$	798,264

At December 31, 2016, variable-rate and fixed-rate loans totaled $546,848,000 and $389,370,000, respectively. At December 31, 2015, variable-rate and fixed-rate loans totaled $401,800,000 and $408,011,000, respectively. Fixed-rate loans include certain variable-rate loans that have reached their respective floor rates.

The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes all commercial loans, and consumer relationships with an outstanding balance greater than $500,000, individually and assigns each loan a risk rating. This analysis is performed on a continual basis by the relationship managers and credit department personnel. On at least an annual basis an independent party performs a formal credit risk review of a sample of the loan portfolio. Among other things, this review assesses the appropriateness of the loan’s risk rating. The Company uses the following definitions for risk ratings:

Special Mention – A special mention asset possesses deficiencies or potential weaknesses deserving of management’s attention. If uncorrected, such weaknesses or deficiencies may expose the Company to an increased risk of loss in the future.

Substandard – A substandard asset is inadequately protected by the current sound net worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Company will sustain some loss if deficiencies are not corrected. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual assets classified substandard.

Doubtful – A doubtful asset has all weaknesses inherent in one classified substandard, with the added characteristic that weaknesses make collection or liquidation in full, on the basis of existing facts, conditions, and values, highly questionable and improbable. The probability of loss is extremely high, but certain important and reasonable specific pending factors which may work to the advantage and strengthening of the asset exist, therefore, its classification as an estimated loss is deferred until a more exact status may be determined. Pending factors include proposed merger, acquisition or liquidation procedures, capital injection, perfecting liens on additional collateral, and refinancing plans.

Loans not falling into the criteria above are considered to be pass-rated loans. The Company utilizes six loan grades within the pass risk rating.

The following table provides the risk category of loans by applicable class of loans as of December 31, 2016 and 2015 (in thousands):

	Performing Loans
December 31, 2016	Pass		Special Mention		Substandard		Total Performing		Total Impaired Loans		Total
Commercial real estate	$	301,012	$	—	$	—	$	301,012	$	1,310	$	302,322
Consumer real estate		96,722		—		293		97,015		—		97,015
Construction and land development		94,491		—		—		94,491		—		94,491
Commercial and industrial		349,857		11,035		16,419		377,311		2,309		379,620
Consumer		5,958		—		16		5,974		—		5,974
Other		56,796		—		—		56,796		—		56,796
Total	$	904,836	$	11,035	$	16,728	$	932,599	$	3,619	$	936,218
December 31, 2015
Commercial real estate	$	249,249	$	—	$	—	$	249,249	$	1,948	$	251,197
Consumer real estate		93,181		—		—		93,181		604		93,785
Construction and land development		52,522		—		—		52,522		—		52,522
Commercial and industrial		338,106		6,230		9,106		353,442		—		353,442
Consumer		8,543		—		—		8,543		125		8,668
Other		50,197		—		—		50,197		—		50,197
Total	$	791,798	$	6,230	$	9,106	$	807,134	$	2,677	$	809,811

None of the Company’s loans had a risk rating of “Doubtful” as of December 31, 2016 and 2015, respectively.

The following tables detail the changes in the ALLL from December 31, 2013 through December 31, 2016 by loan classification and the allocation of the ALLL (in thousands):

	Commercial real estate			Consumer real estate			Construction and land development		Commercial and industrial			Consumer			Other		Total
Allowance for Loan and Lease Losses:
Balances, December 31, 2013	$	1,408		$	688		$	332	$	5,870		$	81		$	80	$	8,459
Charged-off loans		(92	)		(57	)		—		(816	)		(182	)		—		(1,147	)
Recoveries		—			21			—		52			28			—		101
Provision for loan and lease losses		219			(31	)		76		3,434			148			23		3,869
Balances, December 31, 2014	$	1,535		$	621		$	408	$	8,540		$	75		$	103	$	11,282
Collectively evaluated for impairment	$	1,250		$	448		$	235	$	6,140		$	75		$	103	$	8,251
Individually evaluated for impairment		285			173			—		2,400			—			—		2,858
Loans acquired with deteriorated credit quality		—			—			173		—			—			—		173
Balances, December 31, 2014	$	1,535		$	621		$	408	$	8,540		$	75		$	103	$	11,282
Loans:
Collectively evaluated for impairment	$	217,628		$	77,056		$	45,058	$	329,807		$	7,911		$	29,393	$	706,853
Individually evaluated for impairment		2,165			592			—		3,806			—			—		6,563
Loans acquired with deteriorated credit quality		—			40			1,135		—			—			—		1,175
Balances, December 31, 2014	$	219,793		$	77,688		$	46,193	$	333,613		$	7,911		$	29,393	$	714,591

	Commercial real estate		Consumer real estate			Construction and land development		Commercial and industrial			Consumer		Other		Total
Allowance for Loan and Lease Losses:
Balances, December 31, 2014	$	1,535	$	621		$	408	$	8,540		$	75	$	103	$	11,282
Charged-off loans		—		(173	)		—		(3,033	)		—		—		(3,206	)
Recoveries		31		68			—		299			7		—		405
Provision for loan and lease losses		1,313		452			506		(1,113	)		21		472		1,651
Balances, December 31, 2015	$	2,879	$	968		$	914	$	4,693		$	103	$	575	$	10,132
Collectively evaluated for impairment	$	2,314	$	968		$	914	$	4,693		$	103	$	575	$	9,567
Individually evaluated for impairment		565		—			—		—			—		—		565
Loans acquired with deteriorated credit quality		—		—			—		—			—		—		—
Balances, December 31, 2015	$	2,879	$	968		$	914	$	4,693		$	103	$	575	$	10,132
Loans:
Collectively evaluated for impairment	$	249,249	$	93,181		$	52,522	$	353,442		$	8,543	$	50,197	$	807,134
Individually evaluated for impairment		1,948		604			—		—			125		—		2,677
Loans acquired with deteriorated credit quality		—		—			—		—			—		—		—
Balances, December 31, 2015	$	251,197	$	93,785		$	52,522	$	353,442		$	8,668	$	50,197	$	809,811

	Commercial real estate			Consumer real estate		Construction and land development		Commercial and industrial			Consumer			Other		Total
Allowance for Loan and Lease Losses:
Balances, December 31, 2015	$	2,879		$	968	$	914	$	4,693		$	103		$	575	$	10,132
Charged-off loans		(350	)		—		—		(956	)		(146	)		—		(1,452	)
Recoveries		52			—		—		23			50			—		125
Provision for loan and lease losses		74			45		660		1,858			69			123		2,829
Balances, December 31, 2016	$	2,655		$	1,013	$	1,574	$	5,618		$	76		$	698	$	11,634
Collectively evaluated for impairment	$	2,655		$	1,013	$	1,574	$	5,118		$	76		$	698	$	11,134
Individually evaluated for impairment		—			—		—		500			—			—		500
Loans acquired with deteriorated credit quality		—			—		—		—			—			—		—
Balances, December 31, 2016	$	2,655		$	1,013	$	1,574	$	5,618		$	76		$	698	$	11,634
Loans:
Collectively evaluated for impairment	$	301,012		$	97,015	$	94,491	$	377,311		$	5,974		$	56,796	$	932,599
Individually evaluated for impairment		1,310			—		—		2,309			—			—		3,619
Loans acquired with deteriorated credit quality		—			—		—		—			—			—		—
Balances, December 31, 2016	$	302,322		$	97,015	$	94,491	$	379,620		$	5,974		$	56,796	$	936,218

The following table presents the allocation of the ALLL for each respective loan category with the corresponding percentage of loans in each category to total loans, net of deferred fees as of December 31, 2016 and 2015 (dollars in thousands):

	December 31, 2016					December 31, 2015
	Amount		Percent of total loans, net of deferred fees			Amount		Percent of total loans, net of deferred fees
Commercial real estate	$	2,655		0.28	%	$	2,879		0.36	%
Consumer real estate		1,013		0.11			968		0.12
Construction and land development		1,574		0.17			914		0.11
Commercial and industrial		5,618		0.60			4,693		0.58
Consumer		76		0.01			103		0.01
Other		698		0.07			575		0.07
Total allowance for loan and lease losses	$	11,634		1.24	%	$	10,132		1.25	%

The following table presents information related to impaired loans as of and for the years ended December 31, 2016 and 2015 (in thousands):

							Year Ended
	December 31, 2016						December 31, 2016
	Recorded investment		Unpaid principal balance		Related allowance		Average recorded investment		Interest income recognized
With no related allowance recorded:
Commercial real estate	$	1,310	$	1,686	$	—	$	655	$	—
Consumer real estate		—		—		—		302		—
Construction and land development		—		—		—		—		—
Commercial and industrial		—		—		—		—		—
Consumer		—		—		—		63		—
Other		—		—		—		—		—
Subtotal		1,310		1,686		—		1,020		—
With an allowance recorded:
Commercial real estate		—		—		—		974		—
Consumer real estate		—		—		—		—		—
Construction and land development		—		—		—		—		—
Commercial and industrial		2,309		2,921		500		1,155		44
Consumer		—		—		—		—		—
Other		—		—		—		—		—
Subtotal		2,309		2,921		500		2,129		44
Total	$	3,619	$	4,607	$	500	$	3,148	$	44

							Year End
	December 31, 2015						December 31, 2015
	Recorded investment		Unpaid principal balance		Related allowance		Average recorded investment		Interest income recognized
With no related allowance recorded:
Commercial real estate	$	—	$	—	$	—	$	42	$	—
Consumer real estate		604		681		—		357		—
Construction and land development		—		—		—		—		—
Commercial and industrial		—		—		—		594		—
Consumer		125		125		—		63		5
Other		—		—		—		—		—
Subtotal		729		806		—		1,056		5
With an allowance recorded:
Commercial real estate		1,948		1,948		565		2,015		—
Consumer real estate		—		—		—		262		—
Construction and land development		—		—		—		568		—
Commercial and industrial		—		—		—		1,309		—
Consumer		—		—		—		—		—
Other		—		—		—		—		—
Subtotal		1,948		1,948		565		4,154		—
Total	$	2,677	$	2,754	$	565	$	5,210	$	5

The recorded investment in loans excludes accrued interest receivable and loan origination fees, net due to immateriality. For purposes of this disclosure, the unpaid principal balance is not reduced for partial charge-offs.

Non-accrual loans and loans past due 90 days still on accrual include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans. Impaired loans include commercial loans that are individually evaluated for impairment and deemed impaired (i.e., individually classified impaired loans) as well as TDRs for all loan classifications.

The following table presents the aging of the recorded investment in past-due loans as of December 31, 2016 and 2015 by class of loans (in thousands):

	30 - 59		60 - 89		Greater Than
	Days		Days		89 Days		Total		Loans Not
December 31, 2016	Past Due		Past Due		Past Due		Past Due		Past Due		Total
Commercial real estate	$	—	$	—	$	—	$	—	$	302,322	$	302,322
Consumer real estate		81		282		—		363		96,652		97,015
Construction and land development		—		—		—		—		94,491		94,491
Commercial and industrial		—		—		—		—		379,620		379,620
Consumer		—		—		—		—		5,974		5,974
Other		—		—		—		—		56,796		56,796
Total	$	81	$	282	$	—	$	363	$	935,855	$	936,218
December 31, 2015
Commercial real estate	$	—	$	—	$	1,948	$	1,948	$	249,249	$	251,197
Consumer real estate		100		54		616		770		93,015		93,785
Construction and land development		—		—		—		—		52,522		52,522
Commercial and industrial		—		—		—		—		353,442		353,442
Consumer		—		—		125		125		8,543		8,668
Other		—		—		—		—		50,197		50,197
Total	$	100	$	54	$	2,689	$	2,843	$	806,968	$	809,811

The Company had no loans past due 90 days or more that were not on nonaccrual status as of December 31, 2016 and 2015.

The following table presents the recorded investment in non-accrual loans and troubled debt restructurings (TDR) by class of loans as of December 31, 2016 and 2015 (in thousands):

	Non-Accrual				Troubled Debt Restructurings
	December 31, 2016		December 31, 2015		December 31, 2016		December 31, 2015
Commercial real estate	$	1,310	$	1,948	$	1,272	$	—
Consumer real estate		—		616		—		—
Construction and land development		—		—		—		—
Commercial and industrial		2,309		—		—		—
Consumer		—		125		—		125
Other		—		—		—		—
Total	$	3,619	$	2,689	$	1,272	$	125

As of December 31, 2016 and 2015, all loans classified as nonperforming were deemed to be impaired.

As of December 31, 2016 and 2015, the Company had recorded investments in TDR of $1.3 million and $0.1 million, respectively. The Company did not allocate a specific allowance for those loans at December 31, 2016 or 2015 and there were no commitments to lend additional amounts. Loans accounted for as TDR include modifications from original terms such as those due to bankruptcy proceedings, certain modifications of amortization periods or extended suspension of principal payments due to customer financial difficulties. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification. This evaluation is performed under the Company’s loan policy. Loans accounted for as TDR are individually evaluated for impairment.

The following table presents loans by class modified as TDR that occurred during the year ended December 31, 2016 and 2015 (in thousands).

	Year Ended
	December 31,
	Number of contracts		Pre modification outstanding recorded investment		Post modification outstanding recorded investment, net of related allowance
2016
Commercial real estate		1	$	1,948	$	1,170
Consumer real estate		—		—		—
Construction and land development		—		—		—
Commercial and industrial		—		—		—
Consumer		—		—		—
Other		—		—		—
Total		1	$	1,948	$	1,170
2015
Commercial real estate		—	$	—	$	—
Consumer real estate		—		—		—
Construction and land development		—		—		—
Commercial and industrial		—		—		—
Consumer		1		125		125
Other		—		—		—
Total		1	$	125	$	125

The following table presents loans by class modified as TDR for which there was a payment default within twelve months following the modification during the year ended December 31, 2016 and 2015 (in thousands).

	Year Ended
	December 31,
	Number of contracts		Recorded investment
2016
Commercial real estate		—	$	—
Consumer real estate		—		—
Construction and land development		—		—
Commercial and industrial		—		—
Consumer		1		124
Other		—		—
Total		1	$	124
2015
Commercial real estate		—	$	—
Consumer real estate		—		—
Construction and land development		—		—
Commercial and industrial		1		—
Consumer		—		—
Other		—		—
Total		1	$	—

The consumer loan TDR that subsequently defaulted during the year ended December 31, 2016 had no specific reserve in the ALLL and resulted in a $0.1 million charge-off. The commercial and industrial loan TDR that subsequently defaulted during the year ended December 31, 2015 had a $2.4 million specific reserve in the ALLL and resulted in a $2.5 million charge-off.

A loan is considered to be in payment default once it is 30 days contractually past due under the modified terms.

Purchased Credit Impaired Loans

At December 31, 2016 and 2015, the Company had no purchased loans, for which there was, at acquisition, evidence of deterioration of credit quality since origination and it was probable, at acquisition, that all contractually required payments would not be collected.

Accretable yield, or income expected to be collected, was as follows for the years ended December 31 (in thousands):

	2016		2015			2014
Balance at January 1	$	—	$	(190	)	$	(297	)
New loans purchased		—		—			—
Accretion of income		—		499			255
Reclassifications from nonaccretable difference		—		(309	)		(148	)
Disposals		—		—			—
Balance at December 31	$	—	$	—		$	(190	)

Purchased impaired loans had no impact on the ALLL for the year ended December 31, 2016. For those purchased impaired loans disclosed above, the Company reduced the allowance for loan and lease losses by $173,000 during the year ended December 31, 2015.

Leases

The Company has entered into various direct finance leases. The leases are reported as part of other loans. The lease terms vary from two to six years. The components of the direct financing leases as of December 31, 2016 and 2015 were as follows (in thousands):

	December 31, 2016			December 31, 2015
Total minimum lease payments receivable	$	2,567		$	5,215
Less:
Unearned income		(96	)		(321	)
Net leases	$	2,471		$	4,894

The future minimum lease payments receivable under the direct financing leases as of December 31, 2016 were as follows (in thousands):

Year ending December 31:
2017	$	1,877
2018		332
2019		303
2020		55
2021		—
	$	2,567

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Premises and Equipment

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Premises and Equipment

NOTE 5 – PREMISES AND EQUIPMENT

Premises and equipment at December 31, 2016 and 2015 are summarized as follows (in thousands):

	Range of useful lives	December 31, 2016			December 31, 2015
Land	Not applicable	$	1,180		$	1,180
Buildings	39 years		3,586			3,586
Leasehold improvements	2 to 10 years		1,171			1,174
Furniture and equipment	3 to 7 years		2,055			2,332
Leasehold improvements in process	Not applicable		774			—
			8,766			8,272
Less accumulated depreciation and amortization			(3,416	)		(3,376	)
		$	5,350		$	4,896

Depreciation and amortization expense for the years ended December 31, 2016, 2015 and 2014 totaled $422,000, $506,000 and $625,000, respectively.

The Company leases certain properties under noncancelable lease arrangements. The leases have various terms, and maturity dates, including extensions through 2028. The leases have various other terms including payments for common area maintenance, escalation increases over the term of the lease and various renewal options. Rent expense related to these leases for 2016, 2015 and 2014 totaled $1,016,000, $1,018,000 and $994,000 respectively.

Future minimum payments under these operating leases as of December 31, 2016 are as follows (in thousands):

Year ending December 31:
2017	$	868
2018		1,179
2019		950
2020		951
2021		968
Thereafter		10,542
	$	15,458

Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

NOTE 6 – GOODWILL AND INTANGIBLE ASSETS

Goodwill

The change in goodwill during the years ended December 31, 2016 and 2015, respectively, was as follows (in thousands):

	2016		2015
Beginning of year	$	6,219	$	6,219
Acquired goodwill		—		—
Impairment		—		—
End of year	$	6,219	$	6,219

Impairment exists when a reporting unit’s carrying value of goodwill exceeds its fair value. At October 31, 2016, the Company’s reporting unit had positive equity and the Company elected to perform a qualitative assessment to determine if it was more likely than not that the fair value of the reporting unit exceeded its carrying value, including goodwill. The qualitative assessment indicated that it was more likely than not that the fair value of the reporting unit exceeded its carrying value, resulting in no impairment.

Acquired Intangible Assets

Acquired intangible assets at December 31, 2016 and 2015 were as follows (in thousands):

	December 31, 2016					December 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Core deposit intangibles	$	287	$	(216	)	$	287	$	(162	)

Aggregate amortization expense was $54,000 for 2016, 2015 and 2014.

Estimated amortization expense for each of the next five years is as follows (in thousands):

Year ending December 31:
2017	$	48
2018		23
2019		—
2020		—
2021		—

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Other Real Estate Owned

12 Months Ended

Dec. 31, 2016

Other Real Estate [Abstract]

Other Real Estate Owned

NOTE 7 – OTHER REAL ESTATE OWNED

Other real estate owned activity was as follows (in thousands):

	2016			2015
Beginning balance	$	216		$	575
Loans transferred to other real estate owned		—			—
Direct write-downs		—			—
Sales of other real estate owned		(216	)		(359	)
End of year	$	—		$	216

Other real estate owned is presented net of the valuation allowance which is allocated to the specific properties held.

Activity in the valuation allowance was as follows during the years ended December 31, 2016 and 2015, respectively (in thousands):

	2016			2015
Beginning balance	$	450		$	450
Additions/(recoveries) charged/(credited) to expense		—			—
Reductions from sales of other real estate owned		(450	)		—
Direct write-downs		—			—
End of year	$	—		$	450

Expenses related to other real estate owned during the years ended December 31, 2016 and 2015, respectively include (in thousands):

	2016			2015
Net (gain) loss on sales	$	(157	)	$	4
Provision for unrealized losses		—			—
Operating expenses, net of rental income		14			30
Total	$	(143	)	$	34

- Definition

The entire disclosure for real estate owned (as defined). Generally, the largest component of real estate owned by lenders is assets taken in settlement of troubled loans through surrender or foreclosure. Real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68051746&loc=d3e18551-111553

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 40
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=68051746&loc=d3e18511-111553

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4437-111522

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=29634951&loc=d3e1424-110224

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04(c)(Schedule III))
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(4))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 970
-SubTopic 360
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-28)
-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 43
-URI http://asc.fasb.org/extlink&oid=29634951&loc=d3e1739-110224

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(8))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Deposits

12 Months Ended

Dec. 31, 2016

Deposits [Abstract]

Deposits

NOTE 8 – DEPOSITS

Time deposits that meet or exceed the FDIC deposit insurance limit of $250,000 at December 31, 2016 and 2015 were $51,070,000 and $84,248,000, respectively.

Scheduled maturities of time deposits for the next five years and thereafter are as follows (in thousands):

Maturity:
2017	$	125,309
2018		29,542
2019		17,771
2020		7,926
2021		3,057
Thereafter		23
	$	183,628

At December 31, 2016 and 2015, the Company had $41,000 and $216,000, respectively of deposit accounts in overdraft status that were reclassified to loans in the accompanying balance sheets.

Securities Sold Under Repurchase Agreements

12 Months Ended

Dec. 31, 2016

Investments Debt And Equity Securities [Abstract]

Securities Sold Under Repurchase Agreements

NOTE 9 – SECURITIES SOLD UNDER REPURCHASE AGREEMENTS

Securities sold under repurchase agreements are secured by securities with a carrying amount of $3,724,000 at December 31, 2015. There were no securities sold under repurchase agreements at December 31, 2016.

Securities sold under repurchase agreements are financing arrangements that mature at various dates. At maturity, the securities underlying the agreements are returned to the Company. The underlying securities are typically held by other financial institutions and are designated as pledged. Information concerning securities sold under repurchase agreements is summarized as follows (in thousands):

	2016			2015
Average daily balance during the year	$	526		$	6,489
Average interest rate during the year		0.15	%		0.23	%
Maximum month-end balance during the year	$	3,316		$	15,862
Weighted average interest rate at year-end		—			0.25	%

Federal Home Loan Bank Advances

12 Months Ended

Dec. 31, 2016

Federal Home Loan Banks [Abstract]

Federal Home Loan Bank Advances

NOTE 10 – FEDERAL HOME LOAN BANK ADVANCES

The Company had outstanding borrowings totaling of $55,000,000 and $45,000,000 million at December 31, 2016 and 2015, respectively, via two separate advances. These advances are non-callable; interest payments are due monthly, with principal due at maturity.

The following is a summary of the contractual maturities and average effective rates of outstanding advances (dollars in thousands):

	December 31, 2016					December 31, 2015
Year	Amount		Interest Rates			Amount		Interest Rates
2016	$	—		—		$	45,000		0.57	%
2017		55,000		0.80	%		—		—
2018		—		—			—		—
2019		—		—			—		—
2020		—		—			—		—
2021		—		—			—		—
Thereafter		—		—			—		—
Total	$	55,000		0.80	%	$	45,000		0.57	%

Advances from the FHLB are collateralized by investment securities, FHLB stock and certain commercial and residential real estate mortgage loans totaling $211.5 million under a blanket mortgage collateral agreement. At December 31, 2016, the amount of available credit from the FHLB totaled $122.1 million.

Accumulated Other Comprehensive Income (Loss)

12 Months Ended

Dec. 31, 2016

Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]

Accumulated Other Comprehensive Income (Loss)

NOTE 11 – ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

The following were changes in accumulated other comprehensive income (loss) by component, net of tax, for the years ending December 31, 2016 and 2015 (in thousands):

				Unrealized Gains			Unrealized
	Gains and			and Losses			Losses on
	Losses on			on Available			Securities
	Cash Flow			for Sale			Transferred to
Year Ended December 31, 2015	Hedges			Securities			Held to Maturity			Total
Beginning Balance	$	(2,139	)	$	723		$	(1,418	)	$	(2,834	)
Other comprehensive income (loss) before reclassification		(1,542	)		(652	)		206			(1,988	)
Amounts reclassified from accumulated other comprehensive income		(23	)		34			(103	)		(92	)
Net current period other comprehensive income (loss)		(1,565	)		(618	)		103			(2,080	)
Ending Balance	$	(3,704	)	$	105		$	(1,315	)	$	(4,914	)
Year Ended December 31, 2016
Beginning Balance	$	(3,704	)	$	105		$	(1,315	)	$	(4,914	)
Other comprehensive income (loss) before reclassification		(279	)		(878	)		206			(951	)
Amounts reclassified from accumulated other comprehensive income		(257	)		75			(103	)		(285	)
Net current period other comprehensive income (loss)		(536	)		(803	)		103			(1,236	)
Ending Balance	$	(4,240	)	$	(698	)	$	(1,212	)	$	(6,150	)

The following were significant amounts reclassified out of each component of accumulated other comprehensive income (loss) for the year ending December 31, 2016 (in thousands):

	Amount Reclassified from			Affected Line Item
Details about Accumulated Other	Accumulated Other			in the Statement Where
Comprehensive Income Components	Comprehensive Income			Net Income is Presented
Unrealized losses on cash flow hedges	$	(151	)	Interest expense - money market
		(265	)	Interest expense - Federal Home Loan Bank advances
		159		Income tax (expense) benefit
	$	(257	)	Net of tax
Unrealized gains and losses on available for sale securities	$	121		Net gain on sale of securities
		(46	)	Income tax (expense) benefit
	$	75		Net of tax
Unrealized losses on securities transferred to held to maturity	$	(167	)	Interest income - securities
		64		Income tax (expense) benefit
	$	(103	)	Net of tax

The following were significant amounts reclassified out of each component of accumulated other comprehensive income (loss) for the year ending December 31, 2015 (in thousands):

	Amount Reclassified from			Affected Line Item
Details about Accumulated Other	Accumulated Other			in the Statement Where
Comprehensive Income Components	Comprehensive Income			Net Income is Presented
Unrealized losses on cash flow hedges	$	(37	)	Interest expense - money market
		14		Income tax (expense) benefit
	$	(23	)	Net of tax
Unrealized gains and losses on available for sale securities	$	55		Net gain on sale of securities
		(21	)	Income tax (expense) benefit
	$	34		Net of tax
Unrealized losses on securities transferred to held to maturity	$	(167	)	Interest income - securities
		64		Income tax (expense) benefit
	$	(103	)	Net of tax

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669619-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e716-108580

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e709-108580

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

+ Details

Income Taxes

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Income Taxes

NOTE 12 – INCOME TAXES

The components of income tax expense are summarized as follows (in thousands):

	2016			2015		2014
Current:
Federal	$	4,029		$	2,794	$	1,630
State		759			168		333
		4,788			2,962		1,963
Deferred:
Federal		(395	)		314		373
State		100			194		76
		(295	)		508		449
Total	$	4,493		$	3,470	$	2,412

A reconciliation of actual income tax expense in the financial statements to the “expected” tax expense (computed by applying the statutory federal income tax rate of 34% to income before income taxes) for the years ended December 31, 2016, 2015 and 2014 is as follows (in thousands):

	2016			2015			2014
Computed "expected" tax expense	$	4,621		$	3,750		$	2,517
State income taxes, net of effect of federal income taxes		567			239			270
Tax-exempt interest income		(394	)		(367	)		(311	)
Earnings on bank owned life insurance contracts		(204	)		(213	)		(223	)
Disallowed expenses		60			71			62
Expiration of capital loss carryforward		—			—			98
Other		(157	)		(10	)		(1	)
Total	$	4,493		$	3,470		$	2,412

Significant items that gave rise to deferred taxes at December 31, 2016 and 2015 were as follows (in thousands):

	December 31, 2016		December 31, 2015
Deferred tax assets:
Allowance for loan and lease losses	$	4,320	$	3,787
Depreciation		326		341
Net operating loss carryforward		1,548		1,705
Organization and preopening costs		987		1,142
Stock-based compensation		1,071		941
Acquired loans		224		401
Acquired deposits		60		109
Nonaccrual interest		39		60
Write-downs of other real estate		—		171
Accrued incentive compensation		688		694
Reserve for contingencies		1,061		462
Accrued contributions		197		140
Unrealized loss on securities available for sale		1,493		995
Unrealized loss on securities held to maturity		752		816
Cash flow hedge		588		1,209
Accrued vacation		54		53
Other		51		74
Deferred tax assets		13,459		13,100
Deferred tax liabilities:
Prepaid expenses		133		—
Goodwill		343		204
Amortization of core deposit intangible		27		47
Deferred tax liabilities		503		251
Net deferred tax asset	$	12,956	$	12,849

At December 31, 2016, the Company had federal net operating loss carryforwards of approximately $4,513,000, which expire at various dates from 2029 to 2032. Deferred tax assets are fully recognized because the benefits are more likely than not to be realized based on management’s estimation of future taxable earnings.

There are no significant unrecognized income tax benefits as of December 31, 2016 and 2015. As of December 31, 2016 and 2015, the Company has no accrued interest or penalties related to uncertain tax positions.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

NOTE 13 – COMMITMENTS AND CONTINGENCIES

In the normal course of business, the Company has outstanding commitments and contingent liabilities, such as commitments to extend credit and standby letters of credit, which are not included in the accompanying financial statements. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instruments for commitments to extend credit and standby letters of credit is represented by the contractual or notional amount of those instruments. The Company uses the same credit policies in making such commitments as it does for instruments that are included in the balance sheet.

The following table sets forth outstanding financial instruments whose contract amounts represent credit risk as of December 31, 2016 and 2015 (in thousands):

	Contract or notional amount
	December 31, 2016		December 31, 2015
Financial instruments whose contract amounts represent credit risk:
Unused commitments to extend credit	$	508,990	$	384,837
Standby letters of credit		10,886		13,450
Total	$	519,876	$	398,287

The Company is party to litigation and claims arising in the normal course of business. Management believes that the liabilities, if any, arising from such litigation and claims as of December 31, 2016, will not have a material impact on the financial statements of the Company.

Concentration of Credit Risk	12 Months Ended
Concentration of Credit Risk	Dec. 31, 2016
Risks And Uncertainties [Abstract]
Concentration of Credit Risk	NOTE 14 – CONCENTRATION OF CREDIT RISK Substantially all of the Company’s loans, commitments, and standby letters of credit have been granted to customers in the Company’s market area. The concentrations of credit by type of loan are set forth in Note 4 to the financial statements. At December 31, 2016 and 2015, the Company’s cash and due from banks, federal funds sold and interest-bearing deposits in financial institutions aggregated $25,000,000 and $14,000,000, respectively, in excess of insured limits.

Regulatory Matters And Restrictions On Dividends

12 Months Ended

Dec. 31, 2016

Banking And Thrift [Abstract]

Regulatory Matters And Restrictions On Dividends

NOTE 15 – REGULATORY MATTERS AND RESTRICTIONS ON DIVIDENDS

The Company and the Bank are subject to regulatory capital requirements administered by the Federal Reserve and the Bank is also subject to the regulatory capital requirements of the Tennessee Department of Financial Institutions. Failure to meet capital requirements can initiate certain mandatory – and possibly additional discretionary – actions by regulators that could, in that event, have a material adverse effect on the institutions’ financial statements. The relevant regulations require the Company and the Bank to meet specific capital adequacy guidelines that involve quantitative measures of their assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting principles. The capital classifications of the Company and the Bank are also subject to qualitative judgments by their regulators about components, risk weightings, and other factors. Those qualitative judgments could also affect the capital status of the Company and the Bank and the amount of dividends the Company and the Bank may distribute. The final rules implementing the Basel Committee on Companying Supervision’s capital guidelines for U.S. Banks (Basel III rules) became effective for the Company on January 1, 2015 with full compliance with all of the requirements being phased in over a multi-year schedule, and fully phased in by January 1, 2019. The net unrealized gain or loss on available for sale securities is not included in computing regulatory capital. Management believes as of December 31, 2016, the Company and the Bank met all regulatory capital adequacy requirements to which they are subject.

The Federal Deposit Insurance Corporation Improvement Act of 1991 establishes a system of “prompt corrective action” to resolve the problems of undercapitalized insured depository institutions. Under this system, federal banking regulators have established five capital categories: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms are not used to represent overall financial condition. Federal banking regulators are required to take various mandatory supervisory actions and are authorized to take other discretionary actions with respect to institutions in the three undercapitalized categories. The severity of the action depends upon the capital category in which the institution is placed. For example, institutions in all three undercapitalized categories are automatically restricted from paying distributions and management fees, whereas only an institution that is significantly undercapitalized or critically undercapitalized is restricted in its compensation paid to senior executive officers. Generally, subject to a narrow exception, the banking regulator must appoint a receiver or conservator for an institution that is critically undercapitalized.

At December 31, 2016 and 2015, the Company and the Bank were well capitalized under the regulatory framework for prompt corrective action. There have been no conditions or events since that notification that management believes have changed the Company’s or the Bank’s category.

The Company’s and the Bank’s capital amounts and ratios are presented in the following table (in thousands). Only the Bank’s capital amounts and ratios are presented as of December 31, 2015 because the share exchange had not yet occurred.

	Actual					Minimum capital requirement (1)					Minimum to be well-capitalized (2)
	Amount		Ratio			Amount		Ratio			Amount		Ratio
At December 31, 2016:
Total capital to risk-weighted assets:
CapStar Financial Holdings, Inc.	$	149,616		12.6	%	$	95,028		8.0	%	$ N/A		N/A
CapStar Bank		126,718		10.7			95,028		8.0			118,785		10.0
Tier I capital to risk-weighted assets:
CapStar Financial Holdings, Inc.		137,909		11.6			71,271		6.0		N/A		N/A
CapStar Bank		115,011		9.7			71,271		6.0			95,028		8.0
Common equity Tier 1 capital to risk weighted assets:
CapStar Financial Holdings, Inc.		129,528		10.9			53,453		4.5		N/A		N/A
CapStar Bank		99,130		8.3			53,453		4.5			77,210		6.5
Tier I capital to average assets:
CapStar Financial Holdings, Inc.		137,909		10.5			52,727		4.0		N/A		N/A
CapStar Bank		115,011		8.7			52,727		4.0			65,909		5.0
At December 31, 2015:
Total capital to risk-weighted assets	$	116,047		11.4	%	$	81,224		8.0	%	$	101,530		10.0	%
Tier I capital to risk-weighted assets		105,749		10.4			60,918		6.0			81,224		8.0
Common equity tier 1 capital		90,272		8.9			45,688		4.5			65,994		6.5
Tier I capital to average assets		105,749		9.3			45,328		4.0			56,660		5.0

Under Tennessee banking law, the Bank is subject to restrictions on the payment of dividends. Banking regulations limit the amount of dividends that may be paid without prior approval of the Tennessee Department of Financial Institutions. Under these regulations, the amount of dividends that may be paid in any calendar year without prior approval of the Tennessee Department of Financial Institutions is limited to the current year’s net income, combined with the retained net income of the preceding two years, subject to the capital requirements described above. The Bank’s payment of dividends may also be affected or limited by other factors, such as the requirement to maintain adequate capital above regulatory guidelines. The federal banking agencies have indicated that paying dividends that deplete a depository institution’s capital base to an inadequate level would be an unsafe and unsound banking practice. Under the Federal Deposit Insurance Corporation Improvement Act of 1991, a depository institution may not pay any dividends if payment would cause it to become undercapitalized or if it already is undercapitalized. Moreover, the federal agencies have issued policy statements that provide that Company holding companies and insured banks should generally only pay dividends out of current operating earnings.

Based on these regulations, the Bank was eligible to pay $22.1 million and $19.0 million of dividends as of December 31, 2016 and 2015, respectively. The Bank paid the Company $1.5 million of dividends during 2016. No dividend payments were made by the Company during 2016 or 2015.

- Definition

The entire disclosure for banks, savings institutions, and credit unions, for regulatory capital requirements imposed by the Federal Reserve System (FRB), the Federal Deposit Insurance Corporation (FDIC), the Office of Thrift Supervision (OTS) or for any state imposed capital requirements, as applicable. The disclosure may include (1) a description of regulatory capital requirements (a) for capital adequacy purposes and (b) established by the prompt corrective action provisions of Section 38 of the Federal Depository Insurance Act; (2) the actual or possible material effects of noncompliance with such requirements; (3) whether the entity is in compliance with the regulatory capital requirements including (a) required and actual ratios and amounts of Tier 1 leverage, Tier 1 risk-based, and total risk-based capital, tangible capital (for savings institutions), and Tier 3 capital for market risk (for certain banks and bank holding companies), (b) factors that may significantly affect capital adequacy; (4) the prompt corrective action category in which the entity was classified as of its most recent notification; (5) whether management believes any conditions or events since notification have changed the entity's category. Also may include additional information that might be disclosed in situations where substantial doubt about the entity's ability to continue as a going concern for a reasonable period of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1G
-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958577-112826

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1C
-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958572-112826

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1E
-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958574-112826

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1H
-URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958569-112826

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1F
-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958575-112826

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1D
-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958573-112826

+ Details

Nonvoting and Series A Preferred Stock and Stock Warrants	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Nonvoting and Series A Preferred Stock and Stock Warrants	NOTE 16 – NONVOTING AND SERIES A PREFERRED STOCK AND STOCK WARRANTS Nonvoting Common Stock The Company has authorized 5,000,000 shares of its common stock as nonvoting common stock. The nonvoting common stock has the same rights and privileges as the common stock other than the nonvoting designation. Under certain conditions, as outlined in the Company’s charter, the nonvoting stock may be converted, on a one-to-one basis, to common stock. In conjunction with the Company’s initial public offering, 79,166 shares of nonvoting common stock was issued and simultaneously converted to common stock on a one-to-one basis as further described under “Warrants” below. Preferred Stock In conjunction with its initial capital issuance in 2008, the Bank issued 1,609,756 shares of Series A Preferred Stock to certain shareholders. During 2016, coinciding with the Company’s initial public offering, 731,707 preferred shares were converted to common shares. The Series A Preferred Stock contains a liquidation preference and certain antidilution provisions. Holders of Series A Preferred Stock also have certain consent rights with respect to changes to the Company’s charter or bylaws that would materially adversely affect the preferences, rights and powers of such stock and the right to receive certain financial reports. The Series A Preferred Stock is noncumulative, perpetual and, except as otherwise provided below or pursuant to Tennessee law, nonvoting. Holders of Series A Preferred Stock participate equally in dividends paid on the common stock on an as converted basis. In addition, the Series A Preferred Stock is convertible to nonvoting common stock upon the occurrence of certain underwritten public offerings and certain transfers or proposed transfers by the Company’s organizing shareholders. Warrants In conjunction with the issuance of the 1,609,756 shares of the Series A Preferred Stock, the holders of such stock were issued 500,000 warrants to purchase shares of the Company’s nonvoting common stock at a purchase price of $10.25 per share. The warrants are exercisable at any time and expire ten years from the date of grant of July 14, 2008. As of December 31, 2016, 250,000 warrants have been exercised on a cashless basis, resulting in the issuance of 79,166 shares of nonvoting common stock that was simultaneously converted to common stock on a one-to-one basis. As of December 31, 2016, 250,000 of these warrants remain outstanding. As part of the initial capital issuance in 2008, each organizer of the Company (“Organizers”) who became a director of the Company received a warrant to purchase, at the purchase price of $10.00 per share, 10,000 shares of the Company’s common stock. These warrants were issued in compliance with the FDIC’s policy on noncash compensation in recognition of the Organizers considerable contribution of time, expertise, and capital. The Company issued warrants to purchase 60,000 shares of common stock to these organizers. The warrants expire ten years from date of grant of July 14, 2008. As of December 31, 2016, no warrants have been exercised and 60,000 warrants remain outstanding. In addition, each subscriber for shares who is a Tennessee resident or any entity controlled by a Tennessee resident and invested a minimum of $500,000 in the offering, received a warrant to purchase additional shares of common stock equal to 5% of accepted subscriptions at the purchase price of $10.00 per share. The Company issued warrants to purchase 238,319 shares of common stock to these subscribers. The warrants expire ten years from date of grant of July 14, 2008. As of December 31, 2016, 26,500 of these warrants have been exercised and 211,819 warrants remain outstanding.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.E)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(31))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(d))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

+ Details

Stock Options and Restricted Shares

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Options and Restricted Shares

NOTE 18 – STOCK OPTIONS AND RESTRICTED SHARES

During 2008, the board of directors of the Company approved the CapStar Bank 2008 Stock Incentive Plan. Following the formation of CapStar Financial Holdings, Inc. in 2016, and in connection with the Share Exchange, the outstanding awards of restricted stock and stock options under the CapStar Bank 2008 Stock Incentive Plan were exchanged for similar awards of restricted stock and stock options issued by CapStar Financial Holdings, Inc. under the Stock Incentive Plan (the “Plan”), which the board of directors adopted in 2016. The Plan provides for the grant of stock-based incentives, including stock options, restricted stock units, performance awards and restricted stock, to employees, directors and service providers that are subject to forfeiture until vesting conditions have been satisfied by the award recipient under the terms of the award. The Plan is intended to help align the interests of employees and our shareholders and reward our employees for improved Company performance. The Plan reserved 1,569,475 shares of stock for issuance of stock incentives. Stock incentives include both restricted stock and stock option grants. Total shares issuable under the plan are 205,724 at December 31, 2016.

The Company has recognized stock-based compensation expense, within salaries and employee benefits for employees, and within other non-interest expense for directors, in the consolidated statements of income as follows (in thousands):

	For the year ended December 31,
	2016			2015			2014
Stock-based compensation expense before income taxes	$	842		$	438		$	261
Less: deferred tax benefit		(279	)		(138	)		(85	)
Reduction of net income	$	563		$	300		$	176

Restricted Shares

Compensation expense is recognized over the vesting period of the awards based on the fair value of the stock at the issue date. The recipients have the right to vote and receive dividends but cannot sell, transfer, assign, pledge, hypothecate, or otherwise encumber the restricted stock until the shares have vested. Restricted shares fully vest on the third anniversary of the grant date. A summary of the changes in the Company’s nonvested restricted shares for 2016 follows:

				Weighted
				Average
	Restricted			Grant Date
Nonvested Shares	Shares			Fair Value
Nonvested at beginning of period		138,453		$	11.16
Granted		126,851			12.86
Vested		(40,596	)		10.34
Forfeited		(25,067	)		11.68
Nonvested at end of period		199,641		$	12.34

As of December 31, 2016, there was $1,515,000 of total unrecognized compensation cost related to nonvested shares granted under the Plan. The cost is expected to be recognized over a weighted-average period of 2.0 years. The total fair value of shares vested during the years ended December 31, 2016 and 2015 was $513,000 and $184,000.

Stock Options

Option awards are generally granted with an exercise price equal to the fair value of the Company’s common stock at the date of grant. Option awards generally have a three year vesting period and a ten year contractual term.

The fair value of each option grant is estimated on the date of grant using the Black-Scholes option pricing model that uses the assumptions noted in the table below. Expected volatility is based on calculations performed by management using industry data. The Company’s expected dividend yield is 0.00% because the Company has not intended, and does not intend, to pay dividends for the foreseeable future. The expected term of options granted was calculated using the “simplified” method for plain vanilla options as permitted under authoritative literature. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant.

The fair value of options granted was determined using the following weighted average assumptions as of the grant date:

	2016			2015
Dividend yield		—			—
Expected term (in years)		7.48			7.29
Expected stock price volatility		17.20	%		21.26	%
Risk-free interest rate		1.66	%		1.86	%
Pre-vest forfeiture rate		10.25	%		10.33	%

A summary of the activity in stock options for 2016 follows:

						Weighted
				Weighted		Average
				Average		Remaining
				Exercise		Contractual
	Shares			Price		Term (years)
Outstanding at beginning of period		1,018,500		$	10.42
Granted		32,500			13.22
Exercised		(8,125	)		11.85
Forfeited or expired		(36,875	)		11.05
Outstanding at end of period		1,006,000		$	10.48		3.1
Fully vested and expected to vest		996,803		$	10.46		3.1
Exercisable at end of period		929,750		$	10.35		2.7

Information related to stock options during 2016 and 2015 follows:

	2016		2015
Intrinsic value of options exercised	$	53,756	$	1,410
Cash received from option exercises		96,306		10,000
Tax benefit realized from option exercises		20,583		900
Weighted average fair value of options granted		3.16		3.20

As of December 31, 2016, there was $139,000 of total unrecognized compensation cost related to nonvested stock options granted under the Plan. The cost is expected to be recognized over a weighted-average period of 2.5 years.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2016
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	NOTE 20 – EMPLOYEE BENEFIT PLANS The Company has a Retirement Savings 401(k) Plan in which employees may participate. The Company has elected a safe harbor 401(k) plan and as such is required to make an annual contribution of 3% of the employees’ salaries annually. An employee does not have to contribute to receive the employer contribution. In addition, the Company may make an additional discretionary contribution up to 6% of the employees’ salaries annually. For the years ended December 31, 2016, 2015 and 2014, the Company contributed $536,000, $469,000 and $426,000, respectively, to the 401(k) Plan. The Company also has a Health Reimbursement Plan in place to offset the cost of healthcare deductibles for employees. At the end of the year, up to one-half of the unused balance in the employee’s account will be available for the following year up to a maximum of the deductible for that employee.

Derivative Instruments

12 Months Ended

Dec. 31, 2016

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Instruments

NOTE 21 – DERIVATIVE INSTRUMENTS

The Company utilizes interest rate swap agreements as part of its asset liability management strategy to help manage its interest rate risk position. The notional amount of the interest rate swaps does not represent amounts exchanged by the parties. The amount exchanged is determined by reference to the notional amount and the other terms of the individual interest rate swap agreements.

Interest Rate Swaps Designated as Cash Flow Hedges

Forward starting interest rate swaps with notional amounts totaling $20 million and $35 million as of December 31, 2016 and 2015, respectively, were designated as cash flow hedges of certain liabilities and were determined to be fully effective during all periods presented. As such, no amount of ineffectiveness has been included in net income. Therefore, the aggregate fair value of the swaps is recorded in other assets (liabilities) with changes in fair value recorded in other comprehensive income (loss). The amount included in accumulated other comprehensive income (loss) would be reclassified to current earnings should the hedges no longer be considered effective. The Company expects the hedges to remain fully effective during the remaining terms of the swaps.

Summary information about the interest-rate swaps designated as cash flow hedges was as follows (dollars in thousands):

	December 31, 2016			December 31, 2015
Notional amounts	$	20,000		$	35,000
Weighted average pay rates		3.54	%		3.67	%
Weighted average receive rates	3 month LIBOR			3 month LIBOR
Weighted average maturity	6.5 years			7.4 years
Fair value	$	(1,535	)	$	(3,158	)
Amount of unrealized loss recognized in accumulated other comprehensive income, net of tax	$	(947	)	$	(1,949	)

Cash flows have not begun on these forward starting interest rate swaps and therefore, no interest income (expense) was recorded on these swap transactions during 2016 and 2015. Cash flows begin June 2017.

Pursuant to its interest rate swap agreements, the Company pledged collateral to the counterparties in the form of investment securities with a carrying value of $2,391,000 at December 31, 2016. There was no collateral posted from the counterparties to the Company as of December 31, 2016. It is possible that the Company may need to post additional collateral in the future or that the counterparties may be required to post collateral to the Company in the future.

Other Interest Rate Swaps

The Company also enters into swaps to facilitate customer transactions and meet their financing needs. Upon entering into these transactions the Company enters into offsetting positions with large U.S. financial institutions in order to minimize risk to the Company. A summary of the Company’s customer related interest rate swaps is as follows (in thousands):

	December 31, 2016					December 31, 2015
	Notional		Estimated			Notional		Estimated
	amount		fair value			amount		fair value
Interest rate swap agreements:
Pay fixed/receive variable swaps	$	41,254	$	460		$	45,675	$	(726	)
Pay variable/receive fixed swaps		41,254		(460	)		45,675		726
Total	$	82,508	$	—		$	91,350	$	—

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41620-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579240-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624177-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80784-113994

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41641-113959

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4H
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624258-113959

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4K
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5708775-113959

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4J
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5708773-113959

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5580258-113959

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4E
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624181-113959

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41638-113959

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Related Party

12 Months Ended

Dec. 31, 2016

Related Party

NOTE 22 – RELATED PARTY

The Company may enter into loan transactions with certain directors, executive officers, significant shareholders, and their affiliates. Such transactions were made in the ordinary course of business on substantially the same terms, including interest rates and collateral, as those prevailing at the same time for comparable transactions with persons not affiliated with the Company, and did not, in the opinion of management, involve more than normal credit risk or present other unfavorable features. None of these loans were impaired at December 31, 2016 or 2015. Activity within these loans during the year ended December 31, 2016 was as follows (in thousands):

	Total commitment			Total funded commitment
Balance December 31, 2015	$	27,501		$	17,770
New commitments/draw downs		4,805			4,692
Repayments		(1,230	)		(2,137	)
Balance December 31, 2016	$	31,076		$	20,325

Deposits from directors, executive officers, significant shareholders and their affiliates at December 31, 2016 and 2015 were $8.8 million and $12.7 million, respectively.

One director provided consulting services to the Company. The Company incurred $30,000 of expense in 2016 related to these services. In addition, the Company also paid approximately $95,000 to a shareholder of the Company for the lease of one of the Bank’s branches.

Fair Value

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value

NOTE 23 – FAIR VALUE

Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are three levels of inputs that may be used to measure fair values:

Level 1:		Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date.

Level 2:		Significant observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data.

Level 3:		Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability.

The Company used the following methods and significant assumptions to estimate fair value:

Investment Securities : The fair values for investment securities are determined by quoted market prices, if available (Level 1). For securities where quoted prices are not available, fair values are calculated based on market prices of similar securities (Level 2), using matrix pricing. Matrix pricing is a mathematical technique commonly used to price debt securities that are not actively traded and values debt securities by relying on quoted prices for the specific securities and the securities’ relationship to other benchmark quoted securities (Level 2 inputs). For securities where quoted prices or market prices of similar securities are not available, fair values are calculated using discounted cash flows or other market indicators (Level 3). See below for additional discussion of Level 3 valuation methodologies and significant inputs. The fair values of all securities are determined from third party pricing services without adjustment.

Derivatives-Interest Rate Swaps : The fair values of derivatives are based on valuation models using observable market data as of the measurement date (Level 2). The Company’s derivatives are traded in an over-the-counter market where quoted market prices are not always available. Therefore, the fair values of derivatives are determined using quantitative models that utilize multiple market inputs. The inputs will vary based on the type of derivative, but could include interest rates, prices and indices to generate continuous yield or pricing curves, prepayment rates, and volatility factors to value the position. The majority of market inputs are actively quoted and can be validated through external sources, including brokers, market transactions and third-party pricing services. The fair values of all interest rate swaps are determined from third party pricing services without adjustment.

Impaired Loans : The fair value of impaired loans with specific allocations of the allowance for loan and lease losses is generally based on recent appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available for similar loans and collateral underlying such loans. Such adjustments result in a Level 3 classification of the inputs for determining fair value. Collateral may be valued using an appraisal, net book value per the borrower’s financial statements, or aging reports, adjusted or discounted based on management’s historical knowledge, changes in market conditions from the time of the valuation, and management’s expertise and knowledge of the client and client’s business, resulting in a Level 3 fair value classification. Impaired loans are evaluated on at least a quarterly basis for additional impairment and adjusted in accordance with the loan policy.

Other Real Estate Owned : Assets acquired through or instead of loan foreclosure are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. These assets are subsequently accounted for at lower of cost or fair value less estimated costs to sell. Fair value is commonly based on recent real estate appraisals which are updated no less frequently than annually. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach with data from comparable properties. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Appraisals may be adjusted or discounted based on management’s historical knowledge, changes in market conditions from the time of the valuation, and/or management’s expertise and knowledge of the collateral. Such adjustments result in a Level 3 classification of the inputs for determining fair value. Real estate owned properties are evaluated on a quarterly basis for additional impairment and adjusted accordingly.

Loans Held For Sale: Loans held for sale are carried at the lower of cost or fair value, which is evaluated on a pool-level basis. The fair value of loans held for sale is determined using quoted prices for similar assets, adjusted for specific attributes of that loan or other observable market data, such as outstanding commitments from third party investors (Level 2).

Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands):

	Fair value measurements at December 31, 2016
				Quoted prices
				in active		Significant
				markets for		other			Significant
				identical		observable			unobservable
	Carrying			assets		inputs			inputs
	Value			(Level 1)		(Level 2)			(Level 3)
Assets:
Securities available for sale:
U.S. government-sponsored agencies	$	9,374		$	—	$	9,374		$	—
Obligations of states and political subdivisions		27,913			—		27,913			—
Mortage-backed securities-residential		124,595			—		124,595			—
Asset-backed securities		20,473			—		20,473			—
Total securities available for sale	$	182,355		$	—	$	182,355		$	—
Derivatives:
Interest rate swaps - customer related	$	460		$	—	$	460		$	—
Liabilities:
Derivatives:
Interest rate swaps - customer related	$	(460	)	$	—	$	(460	)	$	—
Interest rate swaps - cash flow hedges		(1,535	)		—		(1,535	)		—
Total derivatives	$	(1,994	)	$	—	$	(1,994	)	$	—

	Fair value measurements at December 31, 2015
				Quoted prices
				in active		Significant
				markets for		other			Significant
				identical		observable			unobservable
	Carrying			assets		inputs			inputs
	Value			(Level 1)		(Level 2)			(Level 3)
Assets:
Securities available for sale:
U.S. government-sponsored agencies	$	19,542		$	—	$	19,542		$	—
Obligations of states and political subdivisions		13,868			—		13,868			—
Mortage-backed securities-residential		118,380			—		118,380			—
Asset-backed securities		21,593			3,526		18,067			—
Total securities available for sale	$	173,383		$	3,526	$	169,857		$	—
Derivatives:
Interest rate swaps - customer related	$	726		$	—	$	726		$	—
Liabilities:
Derivatives:
Interest rate swaps - customer related	$	(726	)	$	—	$	(726	)	$	—
Interest rate swaps - cash flow hedges		(3,158	)		—		(3,158	)		—
Total derivatives	$	(3,884	)	$	—	$	(3,884	)	$	—

Assets measured at fair value on a nonrecurring basis are summarized below (in thousands):

Fair value measurements at December 31, 2016

Quoted prices

in active

Significant

markets for

other

Significant

identical

observable

unobservable

Carrying

assets

inputs

Value

(level 1)

(level 2)

(level 3)

Assets:

Impaired loans:

Commercial and industrial

2,309

—

2,309

Fair value measurements at December 31, 2015

Quoted prices

in active

Significant

markets for

other

Significant

identical

observable

unobservable

Carrying

assets

inputs

Value

(level 1)

(level 2)

(level 3)

Assets:

Impaired loans:

Commercial real estate

1,383

—

1,383

Other real estate owned:

Construction and land development

216

—

216

The following table presents quantitative information about Level 3 fair value measurements for assets measured at fair value on a nonrecurring basis at December 31, 2016 and 2015 (dollars in thousands):

Range

Fair

Valuation

Unobservable

(Weighted-

December 31, 2016

Value

Technique(s)

Input(s)

Average)

Impaired loans:

Commercial and industrial

2,309

Sales comparison approach

Appraisal discounts

Range

Fair

Valuation

Unobservable

(Weighted-

December 31, 2015

Value

Technique(s)

Input(s)

Average)

Impaired loans:

Commercial real estate

1,383

Sales comparison approach

Appraisal discounts

Other real estate owned:

Construction and land development

216

Sales comparison approach

Appraisal discounts

Fair Value of Financial Instruments

The carrying value and estimated fair values of the Company’s financial instruments at December 31, 2016 and 2015 were as follows (in thousands):

	December 31, 2016				December 31, 2015
	Carrying				Carrying
	amount		Fair value		amount		Fair value
Financial assets:
Cash and due from banks, interest-bearing deposits in financial institutions	$	63,456	$	63,456	$	93,455	$	93,455
Federal funds sold		16,654		16,654		6,730		6,730
Securities available for sale		182,355		182,355		173,383		173,383
Securities held to maturity		46,864		49,731		43,094		46,459
Loans held for sale		42,111		42,302		35,729		36,552
Restricted equity securities		6,032	N/A			5,414	N/A
Loans, net		935,251		934,628		798,264		806,030
Accrued interest receivable		3,942		3,942		3,030		3,030
Bank owned life insurance		21,900		21,900		21,299		21,299
Other assets		460		460		726		726
Financial liabilities:
Deposits		1,128,722		1,088,758		1,038,460		1,035,978
Securities sold under repurchase agreements		—		—		3,755		3,755
Federal Home Loan Bank advances		55,000		54,989		45,000		44,926
Accrued interest payable		212		212		177		177
Other liabilities		5,349		5,349		6,536		6,536

The methods and assumptions, not previously presented, used to estimate fair values are described as follows:

(a)	Cash and Due from Banks, Interest-Bearing Deposits in Financial Institutions

For these short-term instruments, the carrying amount is a reasonable estimate of fair value.

(b)	Federal Funds Sold

Federal funds sold clear on a daily basis. For this reason, the carrying amount is a reasonable estimate of fair value.

(c)	Restricted Equity Securities

It is not practical to determine the fair value of restricted securities due to restrictions placed on their transferability.

(d)	Loans, net

The fair value of the Company’s loan portfolio includes a credit risk assumption in the determination of the fair value of its loans. This credit risk assumption is intended to approximate the fair value that a market participant would realize in a hypothetical orderly transaction. The Company’s loan portfolio is initially fair valued using a segmented approach. The Company divides its loan portfolio into the following categories: variable rate loans, impaired loans and all other loans. The results are then adjusted to account for credit risk. For variable-rate loans that reprice frequently and have no significant change in credit risk, fair values approximate carrying values. Fair values for impaired loans are estimated using discounted cash flow models or based on the fair value of the underlying collateral. For other loans, fair values are estimated using discounted cash flow models, using current market interest rates offered for loans with similar terms to borrowers of similar credit quality. The values derived from the discounted cash flow approach for each of the above portfolios are then further discounted to incorporate credit risk. The methods utilized to estimate the fair value of loans do not necessarily represent an exit price.

(e)	Bank Owned Life Insurance

For Bank owned life insurance, the carrying amount is based on the cash surrender value and is a reasonable estimate of fair value.

(f)	Other Assets

Included in other assets are certain interest rate swap agreements and the cash flow hedge relationships. The fair values of interest rate swap agreements and the cash flow hedge relationships are based on independent pricing services that utilize pricing models with observable market inputs.

(g)

Deposits

The fair value of demand deposits, savings accounts and certain money market deposits is the amount payable on demand at the reporting date. The fair value of certificates of deposit is estimated by discounted cash flow models, using current market interest rates offered on certificates with similar remaining maturities.

(h)	Securities Sold under Repurchase Agreements

The securities sold under repurchase agreements are payable upon demand. For this reason, the carrying amount is a reasonable estimate of fair value.

(i)	Federal Home Loan Bank Advances

The fair value of fixed rate Federal Home Loan Bank Advances is estimated using discounted cash flow models, using current market interest rates offered on certificates, advances and other borrowings with similar remaining maturities.

(j)	Accrued Interest Receivable/Payable

The carrying amounts of accrued interest approximate fair value.

(k)	Other Liabilities

Included in other liabilities are certain interest rate swap agreements, the cash flow hedge relationships and contingent consideration. The fair values of interest rate swap agreements and the cash flow hedge relationships are based on independent pricing services that utilize pricing models with observable market inputs. The fair value of contingent consideration is estimated by a discounted cash flow model that utilizes various unobservable inputs.

(l)	Off-Balance Sheet Instruments

Fair values for off-balance sheet, credit-related financial instruments are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. The fair value of commitments is not material.

(m)	Limitations

Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instruments. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular instrument. Because no market exists for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates.

Fair value estimates are based on estimating on and off-balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. For example, fixed assets are not considered financial instruments and their value has not been incorporated into the fair value estimates. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in the estimates.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Parent Company Only Financial Information

12 Months Ended

Dec. 31, 2016

Condensed Financial Information Of Parent Company Only Disclosure [Abstract]

Parent Company Only Financial Information

NOTE 24 – PARENT COMPANY ONLY FINANCIAL INFORMATION

The following information presents the condensed balance sheet, statement of income, and cash flows of CapStar Financial Holdings, Inc. as of and for the year ended December 31, 2016 (in thousands). CapStar Financial Holdings, Inc. had no activity until the Share Exchange in February 2016, as described in Note 1.

Condensed Balance Sheet

	December 31, 2016
Assets
Cash and cash equivalents	$	22,952,354
Investment in consolidated subsidiary		116,309,922
Total assets	$	139,262,276
Liabilities and Shareholders’ Equity
Other liabilities	$	54,880
Total shareholders’ equity		139,207,396
Total liabilities and shareholders’ equity	$	139,262,276

Condensed Income Statement

	Year Ended
	December 31, 2016
Income - dividends from subsidiary	$	1,500,000
Expenses		741,691
Income before income taxes and equity in undistributed net income of subsidiary		758,309
Income tax benefit		(258,528	)
Income before equity in undistributed net income of subsidiary		1,016,837
Equity in undistributed net income of subsidiary		7,366,019
Net income	$	8,382,856

Condensed Statement of Cash Flows

	Year Ended
	December 31, 2016
Cash flows from operating activities:
Net income	$	8,382,856
Adjustments to reconcile net income to net cash provided by operating activities:
Increase in other liabilities		54,880
Excess tax benefit from stock compensation		(61,217	)
Equity in undistributed net income of subsidiary		(7,366,019	)
Net cash provided by operating activities		1,010,500
Cash flows from financing activities:
Issuance of common stock		21,562,716
Exercise of common stock options and warrants, net of repurchase of restricted shares		317,921
Excess tax benefit from stock compensation		61,217
Net cash provided by financing activities		21,941,854
Net increase in cash and cash equivalents		22,952,354
Cash and cash equivalents at beginning of period		—
Cash and cash equivalents at end of period	$	22,952,354

- Definition

The entire disclosure for condensed financial information, including the financial position, cash flows, and the results of operations of the registrant (parent company) as of the same dates or for the same periods for which audited consolidated financial statements are being presented. Alternatively, the details of this disclosure can be reported by the specific parent company taxonomy elements, indicating the appropriate date and period contexts in an instance document.

+ References + Details

Quarterly Financial Results (Unaudited)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Results (Unaudited)

NOTE 25 – QUARTERLY FINANCIAL RESULTS (UNAUDITED)

The following is a summary of quarterly financial results (unaudited) for 2016, 2015 and 2014:

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2016
Interest income	$	10,598,178	$	10,914,739	$	11,874,605	$	12,007,234
Interest expense		1,641,903		1,713,584		1,749,090		1,826,961
Net interest income		8,956,275		9,201,155		10,125,515		10,180,273
Provision for loan and lease losses		937,216		182,863		1,638,669		69,884
Net interest income after provision for loan and lease losses		8,019,059		9,018,292		8,486,845		10,110,389
Noninterest income		2,370,772		2,568,192		3,191,463		2,954,021
Noninterest expense		8,009,741		7,950,794		8,526,805		8,641,506
Net income before income tax expense		2,380,090		3,635,690		3,151,504		4,422,904
Income tax expense		796,245		1,159,438		1,042,282		1,495,445
Net income	$	1,583,845	$	2,476,252	$	2,109,222	$	2,927,460
Net income per share, basic	$	0.18	$	0.29	$	0.24	$	0.26
Net income per share, diluted	$	0.15	$	0.23	$	0.20	$	0.23
2015
Interest income	$	9,619,954	$	9,809,759	$	10,802,646	$	10,271,373
Interest expense		1,450,101		1,460,851		1,385,632		1,433,927
Net interest income		8,169,853		8,348,908		9,417,015		8,837,446
Provision for loan and lease losses		135,675		585,000		580,000		350,000
Net interest income after provision for loan and lease losses		8,034,178		7,763,908		8,837,015		8,487,446
Noninterest income		1,911,804		2,418,890		2,634,659		1,918,157
Noninterest expense		7,718,367		7,331,488		8,603,899		7,323,020
Net income before income tax expense		2,227,615		2,851,311		2,867,774		3,082,583
Income tax expense		658,924		990,000		831,307		989,615
Net income	$	1,568,690	$	1,861,310	$	2,036,468	$	2,092,968
Net income per share, basic	$	0.18	$	0.22	$	0.24	$	0.24
Net income per share, diluted	$	0.15	$	0.18	$	0.20	$	0.20
2014
Interest income	$	9,204,274	$	9,308,583	$	9,478,772	$	10,295,115
Interest expense		1,492,690		1,414,085		1,462,025		1,502,095
Net interest income		7,711,584		7,894,498		8,016,747		8,793,020
Provision for loan and lease losses		113,369		586,500		0		3,168,986
Net interest income after provision for loan and lease losses		7,598,215		7,307,998		8,016,747		5,624,034
Noninterest income		1,109,505		1,873,777		2,557,692		1,878,269
Noninterest expense		6,977,181		7,633,590		7,373,935		6,577,399
Net income before income tax expense		1,730,539		1,548,185		3,200,504		924,903
Income tax expense		540,562		509,403		1,128,460		233,961
Net income	$	1,189,976	$	1,038,782	$	2,072,044	$	690,942
Net income per share, basic	$	0.14	$	0.12	$	0.24	$	0.08
Net income per share, diluted	$	0.12	$	0.10	$	0.20	$	0.07

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Basis of Presentation

Nature of Operations

Initial Public Offering

Estimates

Cash and Cash Equivalents

Securities

Loans Held for Sale

Loans

Consumer real estate consists primarily of 1-4 family residential properties including home equity lines of credit.

Commercial and industrial loans include loans to business enterprises issued for commercial, industrial and/or other professional purposes.

Consumer loans include all loans issued to individuals not included in the consumer real estate class.

Other loans include all loans not included in the classes of loans above and leases.

Acquired Loans

Allowance for Loan and Lease Losses

Specific Component

General Component

Transfers of Financial Assets

Premises and Equipment

These assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value.

Bank Owned Life Insurance

Securities Sold under Agreements to Repurchase

Goodwill and Other Intangible Assets

Other Real Estate Owned

Restricted Equity Securities

Income Taxes

Share-Based Compensation

Stock-Based Compensation

Advertising Costs

Advertising costs are expensed as incurred. Advertising expense was approximately $252,000, $310,000 and $460,000 for the years ended December 31, 2016, 2015 and 2014, respectively.

Off-Balance Sheet Financial Instruments

Derivative Instruments

Comprehensive Income (Loss)

Fair Value Measurements

Restriction on Cash Balances

Subsequent Events

The Company has evaluated subsequent events for recognition and disclosure through March 13, 2017, which is the date the financial statements were available to be issued.

Income Per Common Share

The following is a summary of the basic and diluted earnings per share calculation for each of the following years (in thousands except share data):

	Year Ended December 31,
	2016		2015		2014
Basic net income per share calculation:
Numerator – Net income	$	9,096,778	$	7,559,436	$	4,991,744
Denominator – Average shares of common stock outstanding		9,328,236		8,538,970		8,456,386
Basic net income per share	$	0.98	$	0.89	$	0.59
Diluted net income per share calculation:
Numerator – Net income	$	9,096,778	$	7,559,436	$	4,991,744
Denominator – Average shares of common stock outstanding		9,328,236		8,538,970		8,456,386
Dilutive shares contingently issuable		1,883,790		1,842,925		1,824,658
Average diluted shares of common stock outstanding		11,212,026		10,381,895		10,281,044
Diluted net income per share	$	0.81	$	0.73	$	0.49

Recently Issued Accounting Pronouncements

ASU 2014-09, Revenue from Contracts with Customers

ASU 2016-02, Leases

ASU 2016-09, Compensation – Stock Compensation

ASU 2016-13, Financial Instruments – Credit Losses

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Summary of the Basic and Diluted Earnings Per Share

The following is a summary of the basic and diluted earnings per share calculation for each of the following years (in thousands except share data):

	Year Ended December 31,
	2016		2015		2014
Basic net income per share calculation:
Numerator – Net income	$	9,096,778	$	7,559,436	$	4,991,744
Denominator – Average shares of common stock outstanding		9,328,236		8,538,970		8,456,386
Basic net income per share	$	0.98	$	0.89	$	0.59
Diluted net income per share calculation:
Numerator – Net income	$	9,096,778	$	7,559,436	$	4,991,744
Denominator – Average shares of common stock outstanding		9,328,236		8,538,970		8,456,386
Dilutive shares contingently issuable		1,883,790		1,842,925		1,824,658
Average diluted shares of common stock outstanding		11,212,026		10,381,895		10,281,044
Diluted net income per share	$	0.81	$	0.73	$	0.49

Business Combinations (Tables)

12 Months Ended

Dec. 31, 2016

Farmington

Schedule of Consideration Paid and Amounts of Assets Acquired and Liabilities Assumed

The following table summarizes the consideration paid for Farmington and the amounts of the assets acquired and liabilities assumed recognized at the acquisition date (in thousands):

Consideration:
Cash	$	3,000
Equity instruments		1,148
Contingent consideration		2,206
Fair value of total consideration transferred	$	6,354
Fair value of assets acquired:
Loans held for sale	$	4,111
Premises and equipment		102
Total assets acquired		4,213
Fair value of liabilities assumed:
Warehouse line of credit		3,996
Other liabilities		31
Total liabilities assumed		4,027
Total identifiable net assets acquired		186
Goodwill		6,168
	$	6,354

Investment Securities (Tables)

12 Months Ended

Dec. 31, 2016

Investments Debt And Equity Securities [Abstract]

Summary of Company's Classification of Securities

The Company’s classification of securities at December 31, 2016 and 2015 was as follows (in thousands):

	December 31, 2016									December 31, 2015
	Amortized Cost		Gross unrealized gains		Gross unrealized (losses)			Estimated fair value		Amortized Cost		Gross unrealized gains		Gross unrealized (losses)			Estimated fair value
Securities available for sale:
U. S. government agency securities	$	9,517	$	—	$	(143	)	$	9,374	$	19,562	$	16	$	(36	)	$	19,542
State and municipal securities		28,480		65		(632	)		27,913		13,776		99		(7	)		13,868
Mortgage-backed securities		126,637		17		(2,059	)		124,595		119,828		13		(1,461	)		118,380
Asset-backed securities		21,620		—		(1,147	)		20,473		22,814		—		(1,221	)		21,593
Total	$	186,254	$	82	$	(3,981	)	$	182,355	$	175,980	$	128	$	(2,725	)	$	173,383
Securities held to maturity:
State and municipal securities	$	36,842	$	2,784	$	—		$	39,626	$	37,005	$	3,245	$	—		$	40,250
Mortgage-backed securities		4,687		79		—			4,766		6,089		120		—			6,209
Other debt securities		5,335		11		(7	)		5,339		—		—		—			—
Total	$	46,864	$	2,874	$	(7	)	$	49,731	$	43,094	$	3,365	$	—		$	46,459

Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity

	Available-for-sale				Held-to-maturity
	Amortized cost		Estimated fair value		Amortized cost		Estimated fair value
Due one to five years	$	11,425	$	11,319	$	17,628	$	18,500
Due five to ten years		21,077		20,841		16,732		17,761
Due beyond ten years		5,495		5,127		7,817		8,704
Mortgage-backed securities		126,637		124,595		4,687		4,766
Asset-backed securities		21,620		20,473		—		—
	$	186,254	$	182,355	$	46,864	$	49,731

Summary of Sale of Debt and Equity Securities

Results from sales of debt and equity securities were as follows (in thousands):

	Year ended December 31
	2016			2015			2014
Available for sale:
Proceeds from sales of securities	$	46,700		$	90,445		$	161,603
Gross realized gains		244			261			520
Gross realized losses		(123	)		(206	)		(507	)

Summary of Securities with Unrealized Losses Aggregated by Major Security Type and Length of Time in a Continuous Unrealized Loss Position

The following tables show the Company’s securities with unrealized losses, aggregated by major security type and length of time in a continuous unrealized loss position (in thousands):

	Less than 12 months					12 months or more					Total
December 31, 2016	Estimated fair value		Gross unrealized losses			Estimated fair value		Gross unrealized losses			Estimated fair value		Gross unrealized losses
U. S. government agency securities	$	9,374	$	(143	)	$	—	$	—		$	9,374	$	(143	)
State and municipal securities		20,279		(632	)		—		—			20,279		(632	)
Mortgage-backed securities		110,563		(1,955	)		4,150		(104	)		114,713		(2,059	)
Asset-backed securities		—		—			20,473		(1,147	)		20,473		(1,147	)
Other debt securities		2,029		(7	)		—		—			2,029		(7	)
Total temporarily impaired securities	$	142,245	$	(2,737	)	$	24,623	$	(1,251	)	$	166,868	$	(3,988	)
December 31, 2015
U. S. government agency securities	$	13,100	$	(36	)	$	—	$	—		$	13,100	$	(36	)
State and municipal securities		3,099		(7	)		—		—			3,099		(7	)
Mortgage-backed securities		97,154		(1,068	)		16,260		(393	)		113,414		(1,461	)
Asset-backed securities		—		—			21,593		(1,221	)		21,593		(1,221	)
Total temporarily impaired securities	$	113,353	$	(1,111	)	$	37,853	$	(1,614	)	$	151,206	$	(2,725	)

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details

Loans and Allowance for Loan and Lease Losses (Tables)

12 Months Ended

Dec. 31, 2016

Receivables [Abstract]

Summary of Loans

Loans at December 31, 2016 and 2015 were as follows (in thousands):

	December 31, 2016			December 31, 2015
Commercial real estate	$	302,322		$	251,197
Consumer real estate		97,015			93,785
Construction and land development		94,491			52,522
Commercial and industrial		379,620			353,442
Consumer		5,974			8,668
Other		56,796			50,197
Total		936,218			809,811
Less net unearned income		(967	)		(1,415	)
		935,251			808,396
Allowance for loan and lease losses		(11,634	)		(10,132	)
	$	923,617		$	798,264

Summary of Risk Category of Loans by Applicable Class of Loans

The following table provides the risk category of loans by applicable class of loans as of December 31, 2016 and 2015 (in thousands):

	Performing Loans
December 31, 2016	Pass		Special Mention		Substandard		Total Performing		Total Impaired Loans		Total
Commercial real estate	$	301,012	$	—	$	—	$	301,012	$	1,310	$	302,322
Consumer real estate		96,722		—		293		97,015		—		97,015
Construction and land development		94,491		—		—		94,491		—		94,491
Commercial and industrial		349,857		11,035		16,419		377,311		2,309		379,620
Consumer		5,958		—		16		5,974		—		5,974
Other		56,796		—		—		56,796		—		56,796
Total	$	904,836	$	11,035	$	16,728	$	932,599	$	3,619	$	936,218
December 31, 2015
Commercial real estate	$	249,249	$	—	$	—	$	249,249	$	1,948	$	251,197
Consumer real estate		93,181		—		—		93,181		604		93,785
Construction and land development		52,522		—		—		52,522		—		52,522
Commercial and industrial		338,106		6,230		9,106		353,442		—		353,442
Consumer		8,543		—		—		8,543		125		8,668
Other		50,197		—		—		50,197		—		50,197
Total	$	791,798	$	6,230	$	9,106	$	807,134	$	2,677	$	809,811

Summary of Changes in Allowance for Loan Losses by Loan Classification

The following tables detail the changes in the ALLL from December 31, 2013 through December 31, 2016 by loan classification and the allocation of the ALLL (in thousands):

	Commercial real estate			Consumer real estate			Construction and land development		Commercial and industrial			Consumer			Other		Total
Allowance for Loan and Lease Losses:
Balances, December 31, 2013	$	1,408		$	688		$	332	$	5,870		$	81		$	80	$	8,459
Charged-off loans		(92	)		(57	)		—		(816	)		(182	)		—		(1,147	)
Recoveries		—			21			—		52			28			—		101
Provision for loan and lease losses		219			(31	)		76		3,434			148			23		3,869
Balances, December 31, 2014	$	1,535		$	621		$	408	$	8,540		$	75		$	103	$	11,282
Collectively evaluated for impairment	$	1,250		$	448		$	235	$	6,140		$	75		$	103	$	8,251
Individually evaluated for impairment		285			173			—		2,400			—			—		2,858
Loans acquired with deteriorated credit quality		—			—			173		—			—			—		173
Balances, December 31, 2014	$	1,535		$	621		$	408	$	8,540		$	75		$	103	$	11,282
Loans:
Collectively evaluated for impairment	$	217,628		$	77,056		$	45,058	$	329,807		$	7,911		$	29,393	$	706,853
Individually evaluated for impairment		2,165			592			—		3,806			—			—		6,563
Loans acquired with deteriorated credit quality		—			40			1,135		—			—			—		1,175
Balances, December 31, 2014	$	219,793		$	77,688		$	46,193	$	333,613		$	7,911		$	29,393	$	714,591

	Commercial real estate		Consumer real estate			Construction and land development		Commercial and industrial			Consumer		Other		Total
Allowance for Loan and Lease Losses:
Balances, December 31, 2014	$	1,535	$	621		$	408	$	8,540		$	75	$	103	$	11,282
Charged-off loans		—		(173	)		—		(3,033	)		—		—		(3,206	)
Recoveries		31		68			—		299			7		—		405
Provision for loan and lease losses		1,313		452			506		(1,113	)		21		472		1,651
Balances, December 31, 2015	$	2,879	$	968		$	914	$	4,693		$	103	$	575	$	10,132
Collectively evaluated for impairment	$	2,314	$	968		$	914	$	4,693		$	103	$	575	$	9,567
Individually evaluated for impairment		565		—			—		—			—		—		565
Loans acquired with deteriorated credit quality		—		—			—		—			—		—		—
Balances, December 31, 2015	$	2,879	$	968		$	914	$	4,693		$	103	$	575	$	10,132
Loans:
Collectively evaluated for impairment	$	249,249	$	93,181		$	52,522	$	353,442		$	8,543	$	50,197	$	807,134
Individually evaluated for impairment		1,948		604			—		—			125		—		2,677
Loans acquired with deteriorated credit quality		—		—			—		—			—		—		—
Balances, December 31, 2015	$	251,197	$	93,785		$	52,522	$	353,442		$	8,668	$	50,197	$	809,811

	Commercial real estate			Consumer real estate		Construction and land development		Commercial and industrial			Consumer			Other		Total
Allowance for Loan and Lease Losses:
Balances, December 31, 2015	$	2,879		$	968	$	914	$	4,693		$	103		$	575	$	10,132
Charged-off loans		(350	)		—		—		(956	)		(146	)		—		(1,452	)
Recoveries		52			—		—		23			50			—		125
Provision for loan and lease losses		74			45		660		1,858			69			123		2,829
Balances, December 31, 2016	$	2,655		$	1,013	$	1,574	$	5,618		$	76		$	698	$	11,634
Collectively evaluated for impairment	$	2,655		$	1,013	$	1,574	$	5,118		$	76		$	698	$	11,134
Individually evaluated for impairment		—			—		—		500			—			—		500
Loans acquired with deteriorated credit quality		—			—		—		—			—			—		—
Balances, December 31, 2016	$	2,655		$	1,013	$	1,574	$	5,618		$	76		$	698	$	11,634
Loans:
Collectively evaluated for impairment	$	301,012		$	97,015	$	94,491	$	377,311		$	5,974		$	56,796	$	932,599
Individually evaluated for impairment		1,310			—		—		2,309			—			—		3,619
Loans acquired with deteriorated credit quality		—			—		—		—			—			—		—
Balances, December 31, 2016	$	302,322		$	97,015	$	94,491	$	379,620		$	5,974		$	56,796	$	936,218

Allocation of ALLL with Corresponding Percentage of Loans in Each Category to Total Loans, Net of Deferred Fee

	December 31, 2016					December 31, 2015
	Amount		Percent of total loans, net of deferred fees			Amount		Percent of total loans, net of deferred fees
Commercial real estate	$	2,655		0.28	%	$	2,879		0.36	%
Consumer real estate		1,013		0.11			968		0.12
Construction and land development		1,574		0.17			914		0.11
Commercial and industrial		5,618		0.60			4,693		0.58
Consumer		76		0.01			103		0.01
Other		698		0.07			575		0.07
Total allowance for loan and lease losses	$	11,634		1.24	%	$	10,132		1.25	%

Summary of Information Related to Impaired Loans

The following table presents information related to impaired loans as of and for the years ended December 31, 2016 and 2015 (in thousands):

							Year Ended
	December 31, 2016						December 31, 2016
	Recorded investment		Unpaid principal balance		Related allowance		Average recorded investment		Interest income recognized
With no related allowance recorded:
Commercial real estate	$	1,310	$	1,686	$	—	$	655	$	—
Consumer real estate		—		—		—		302		—
Construction and land development		—		—		—		—		—
Commercial and industrial		—		—		—		—		—
Consumer		—		—		—		63		—
Other		—		—		—		—		—
Subtotal		1,310		1,686		—		1,020		—
With an allowance recorded:
Commercial real estate		—		—		—		974		—
Consumer real estate		—		—		—		—		—
Construction and land development		—		—		—		—		—
Commercial and industrial		2,309		2,921		500		1,155		44
Consumer		—		—		—		—		—
Other		—		—		—		—		—
Subtotal		2,309		2,921		500		2,129		44
Total	$	3,619	$	4,607	$	500	$	3,148	$	44

							Year End
	December 31, 2015						December 31, 2015
	Recorded investment		Unpaid principal balance		Related allowance		Average recorded investment		Interest income recognized
With no related allowance recorded:
Commercial real estate	$	—	$	—	$	—	$	42	$	—
Consumer real estate		604		681		—		357		—
Construction and land development		—		—		—		—		—
Commercial and industrial		—		—		—		594		—
Consumer		125		125		—		63		5
Other		—		—		—		—		—
Subtotal		729		806		—		1,056		5
With an allowance recorded:
Commercial real estate		1,948		1,948		565		2,015		—
Consumer real estate		—		—		—		262		—
Construction and land development		—		—		—		568		—
Commercial and industrial		—		—		—		1,309		—
Consumer		—		—		—		—		—
Other		—		—		—		—		—
Subtotal		1,948		1,948		565		4,154		—
Total	$	2,677	$	2,754	$	565	$	5,210	$	5

Schedule of Aging of Recorded Investment in Past-due Loans, by Class of Loans

The following table presents the aging of the recorded investment in past-due loans as of December 31, 2016 and 2015 by class of loans (in thousands):

	30 - 59		60 - 89		Greater Than
	Days		Days		89 Days		Total		Loans Not
December 31, 2016	Past Due		Past Due		Past Due		Past Due		Past Due		Total
Commercial real estate	$	—	$	—	$	—	$	—	$	302,322	$	302,322
Consumer real estate		81		282		—		363		96,652		97,015
Construction and land development		—		—		—		—		94,491		94,491
Commercial and industrial		—		—		—		—		379,620		379,620
Consumer		—		—		—		—		5,974		5,974
Other		—		—		—		—		56,796		56,796
Total	$	81	$	282	$	—	$	363	$	935,855	$	936,218
December 31, 2015
Commercial real estate	$	—	$	—	$	1,948	$	1,948	$	249,249	$	251,197
Consumer real estate		100		54		616		770		93,015		93,785
Construction and land development		—		—		—		—		52,522		52,522
Commercial and industrial		—		—		—		—		353,442		353,442
Consumer		—		—		125		125		8,543		8,668
Other		—		—		—		—		50,197		50,197
Total	$	100	$	54	$	2,689	$	2,843	$	806,968	$	809,811

Schedule of Recorded In Non Accrual Loans and Troubled Debt Restructurings

The following table presents the recorded investment in non-accrual loans and troubled debt restructurings (TDR) by class of loans as of December 31, 2016 and 2015 (in thousands):

	Non-Accrual				Troubled Debt Restructurings
	December 31, 2016		December 31, 2015		December 31, 2016		December 31, 2015
Commercial real estate	$	1,310	$	1,948	$	1,272	$	—
Consumer real estate		—		616		—		—
Construction and land development		—		—		—		—
Commercial and industrial		2,309		—		—		—
Consumer		—		125		—		125
Other		—		—		—		—
Total	$	3,619	$	2,689	$	1,272	$	125

Schedule of Presents Loans by Class Modified as TDR

The following table presents loans by class modified as TDR that occurred during the year ended December 31, 2016 and 2015 (in thousands).

	Year Ended
	December 31,
	Number of contracts		Pre modification outstanding recorded investment		Post modification outstanding recorded investment, net of related allowance
2016
Commercial real estate		1	$	1,948	$	1,170
Consumer real estate		—		—		—
Construction and land development		—		—		—
Commercial and industrial		—		—		—
Consumer		—		—		—
Other		—		—		—
Total		1	$	1,948	$	1,170
2015
Commercial real estate		—	$	—	$	—
Consumer real estate		—		—		—
Construction and land development		—		—		—
Commercial and industrial		—		—		—
Consumer		1		125		125
Other		—		—		—
Total		1	$	125	$	125

Schedule of Loans by Class Modified as TDR for the Payment Default Within Twelve Months

	Year Ended
	December 31,
	Number of contracts		Recorded investment
2016
Commercial real estate		—	$	—
Consumer real estate		—		—
Construction and land development		—		—
Commercial and industrial		—		—
Consumer		1		124
Other		—		—
Total		1	$	124
2015
Commercial real estate		—	$	—
Consumer real estate		—		—
Construction and land development		—		—
Commercial and industrial		1		—
Consumer		—		—
Other		—		—
Total		1	$	—

Schedule of Accretable Yield or Income Expected to be Collected

Accretable yield, or income expected to be collected, was as follows for the years ended December 31 (in thousands):

	2016		2015			2014
Balance at January 1	$	—	$	(190	)	$	(297	)
New loans purchased		—		—			—
Accretion of income		—		499			255
Reclassifications from nonaccretable difference		—		(309	)		(148	)
Disposals		—		—			—
Balance at December 31	$	—	$	—		$	(190	)

Schedule of Components of Direct Financing Leases

The components of the direct financing leases as of December 31, 2016 and 2015 were as follows (in thousands):

	December 31, 2016			December 31, 2015
Total minimum lease payments receivable	$	2,567		$	5,215
Less:
Unearned income		(96	)		(321	)
Net leases	$	2,471		$	4,894

Summary of Future Minimum Lease Payments Receivable under Direct Financing Leases

The future minimum lease payments receivable under the direct financing leases as of December 31, 2016 were as follows (in thousands):

Year ending December 31:
2017	$	1,877
2018		332
2019		303
2020		55
2021		—
	$	2,567

Premises and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Summary of Premises and Equipment

Premises and equipment at December 31, 2016 and 2015 are summarized as follows (in thousands):

	Range of useful lives	December 31, 2016			December 31, 2015
Land	Not applicable	$	1,180		$	1,180
Buildings	39 years		3,586			3,586
Leasehold improvements	2 to 10 years		1,171			1,174
Furniture and equipment	3 to 7 years		2,055			2,332
Leasehold improvements in process	Not applicable		774			—
			8,766			8,272
Less accumulated depreciation and amortization			(3,416	)		(3,376	)
		$	5,350		$	4,896

Summary of Future Minimum Payments under Operating Leases

Future minimum payments under these operating leases as of December 31, 2016 are as follows (in thousands):

Year ending December 31:
2017	$	868
2018		1,179
2019		950
2020		951
2021		968
Thereafter		10,542
	$	15,458

Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Change in Goodwill

The change in goodwill during the years ended December 31, 2016 and 2015, respectively, was as follows (in thousands):

	2016		2015
Beginning of year	$	6,219	$	6,219
Acquired goodwill		—		—
Impairment		—		—
End of year	$	6,219	$	6,219

Summary of Acquired Intangible Assets

Acquired intangible assets at December 31, 2016 and 2015 were as follows (in thousands):

	December 31, 2016					December 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Core deposit intangibles	$	287	$	(216	)	$	287	$	(162	)

Summary of Estimated Amortization Expense

Estimated amortization expense for each of the next five years is as follows (in thousands):

Year ending December 31:
2017	$	48
2018		23
2019		—
2020		—
2021		—

Other Real Estate Owned (Tables)

12 Months Ended

Dec. 31, 2016

Other Real Estate [Abstract]

Summary of Other Real Estate Owned Activity

Other real estate owned activity was as follows (in thousands):

	2016			2015
Beginning balance	$	216		$	575
Loans transferred to other real estate owned		—			—
Direct write-downs		—			—
Sales of other real estate owned		(216	)		(359	)
End of year	$	—		$	216

Summary of Valuation Allowance Activity in Other Real Estate Owned

Activity in the valuation allowance was as follows during the years ended December 31, 2016 and 2015, respectively (in thousands):

	2016			2015
Beginning balance	$	450		$	450
Additions/(recoveries) charged/(credited) to expense		—			—
Reductions from sales of other real estate owned		(450	)		—
Direct write-downs		—			—
End of year	$	—		$	450

Summary of Expenses Related to Other Real Estate Owned

Expenses related to other real estate owned during the years ended December 31, 2016 and 2015, respectively include (in thousands):

	2016			2015
Net (gain) loss on sales	$	(157	)	$	4
Provision for unrealized losses		—			—
Operating expenses, net of rental income		14			30
Total	$	(143	)	$	34

Deposits (Tables)

12 Months Ended

Dec. 31, 2016

Deposits [Abstract]

Scheduled Maturities of Time Deposits

Scheduled maturities of time deposits for the next five years and thereafter are as follows (in thousands):

Maturity:
2017	$	125,309
2018		29,542
2019		17,771
2020		7,926
2021		3,057
Thereafter		23
	$	183,628

Securities Sold Under Repurchase Agreements (Tables)

12 Months Ended

Dec. 31, 2016

Investments Debt And Equity Securities [Abstract]

Summary of Information Concerning Securities Sold Under Repurchase Agreements

Information concerning securities sold under repurchase agreements is summarized as follows (in thousands):

	2016			2015
Average daily balance during the year	$	526		$	6,489
Average interest rate during the year		0.15	%		0.23	%
Maximum month-end balance during the year	$	3,316		$	15,862
Weighted average interest rate at year-end		—			0.25	%

Federal Home Loan Bank Advances (Tables)

12 Months Ended

Dec. 31, 2016

Federal Home Loan Banks [Abstract]

Summary of Contractual Maturities and Average Effective Rates of Outstanding Advances

The following is a summary of the contractual maturities and average effective rates of outstanding advances (dollars in thousands):

	December 31, 2016					December 31, 2015
Year	Amount		Interest Rates			Amount		Interest Rates
2016	$	—		—		$	45,000		0.57	%
2017		55,000		0.80	%		—		—
2018		—		—			—		—
2019		—		—			—		—
2020		—		—			—		—
2021		—		—			—		—
Thereafter		—		—			—		—
Total	$	55,000		0.80	%	$	45,000		0.57	%

Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2016

Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]

Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component, Net of Tax

The following were changes in accumulated other comprehensive income (loss) by component, net of tax, for the years ending December 31, 2016 and 2015 (in thousands):

				Unrealized Gains			Unrealized
	Gains and			and Losses			Losses on
	Losses on			on Available			Securities
	Cash Flow			for Sale			Transferred to
Year Ended December 31, 2015	Hedges			Securities			Held to Maturity			Total
Beginning Balance	$	(2,139	)	$	723		$	(1,418	)	$	(2,834	)
Other comprehensive income (loss) before reclassification		(1,542	)		(652	)		206			(1,988	)
Amounts reclassified from accumulated other comprehensive income		(23	)		34			(103	)		(92	)
Net current period other comprehensive income (loss)		(1,565	)		(618	)		103			(2,080	)
Ending Balance	$	(3,704	)	$	105		$	(1,315	)	$	(4,914	)
Year Ended December 31, 2016
Beginning Balance	$	(3,704	)	$	105		$	(1,315	)	$	(4,914	)
Other comprehensive income (loss) before reclassification		(279	)		(878	)		206			(951	)
Amounts reclassified from accumulated other comprehensive income		(257	)		75			(103	)		(285	)
Net current period other comprehensive income (loss)		(536	)		(803	)		103			(1,236	)
Ending Balance	$	(4,240	)	$	(698	)	$	(1,212	)	$	(6,150	)

Summary of Significant Amounts Reclassified out off Accumulated Other Comprehensive Income (Loss)

The following were significant amounts reclassified out of each component of accumulated other comprehensive income (loss) for the year ending December 31, 2016 (in thousands):

	Amount Reclassified from			Affected Line Item
Details about Accumulated Other	Accumulated Other			in the Statement Where
Comprehensive Income Components	Comprehensive Income			Net Income is Presented
Unrealized losses on cash flow hedges	$	(151	)	Interest expense - money market
		(265	)	Interest expense - Federal Home Loan Bank advances
		159		Income tax (expense) benefit
	$	(257	)	Net of tax
Unrealized gains and losses on available for sale securities	$	121		Net gain on sale of securities
		(46	)	Income tax (expense) benefit
	$	75		Net of tax
Unrealized losses on securities transferred to held to maturity	$	(167	)	Interest income - securities
		64		Income tax (expense) benefit
	$	(103	)	Net of tax

The following were significant amounts reclassified out of each component of accumulated other comprehensive income (loss) for the year ending December 31, 2015 (in thousands):

	Amount Reclassified from			Affected Line Item
Details about Accumulated Other	Accumulated Other			in the Statement Where
Comprehensive Income Components	Comprehensive Income			Net Income is Presented
Unrealized losses on cash flow hedges	$	(37	)	Interest expense - money market
		14		Income tax (expense) benefit
	$	(23	)	Net of tax
Unrealized gains and losses on available for sale securities	$	55		Net gain on sale of securities
		(21	)	Income tax (expense) benefit
	$	34		Net of tax
Unrealized losses on securities transferred to held to maturity	$	(167	)	Interest income - securities
		64		Income tax (expense) benefit
	$	(103	)	Net of tax

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

The components of income tax expense are summarized as follows (in thousands):

	2016			2015		2014
Current:
Federal	$	4,029		$	2,794	$	1,630
State		759			168		333
		4,788			2,962		1,963
Deferred:
Federal		(395	)		314		373
State		100			194		76
		(295	)		508		449
Total	$	4,493		$	3,470	$	2,412

Schedule of Reconciliation of Actual Income Tax Expense

	2016			2015			2014
Computed "expected" tax expense	$	4,621		$	3,750		$	2,517
State income taxes, net of effect of federal income taxes		567			239			270
Tax-exempt interest income		(394	)		(367	)		(311	)
Earnings on bank owned life insurance contracts		(204	)		(213	)		(223	)
Disallowed expenses		60			71			62
Expiration of capital loss carryforward		—			—			98
Other		(157	)		(10	)		(1	)
Total	$	4,493		$	3,470		$	2,412

Schedule of Deferred Tax Assets and Liabilities

Significant items that gave rise to deferred taxes at December 31, 2016 and 2015 were as follows (in thousands):

	December 31, 2016		December 31, 2015
Deferred tax assets:
Allowance for loan and lease losses	$	4,320	$	3,787
Depreciation		326		341
Net operating loss carryforward		1,548		1,705
Organization and preopening costs		987		1,142
Stock-based compensation		1,071		941
Acquired loans		224		401
Acquired deposits		60		109
Nonaccrual interest		39		60
Write-downs of other real estate		—		171
Accrued incentive compensation		688		694
Reserve for contingencies		1,061		462
Accrued contributions		197		140
Unrealized loss on securities available for sale		1,493		995
Unrealized loss on securities held to maturity		752		816
Cash flow hedge		588		1,209
Accrued vacation		54		53
Other		51		74
Deferred tax assets		13,459		13,100
Deferred tax liabilities:
Prepaid expenses		133		—
Goodwill		343		204
Amortization of core deposit intangible		27		47
Deferred tax liabilities		503		251
Net deferred tax asset	$	12,956	$	12,849

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Schedule of Financial Instruments Representing Credit Risk

The following table sets forth outstanding financial instruments whose contract amounts represent credit risk as of December 31, 2016 and 2015 (in thousands):

	Contract or notional amount
	December 31, 2016		December 31, 2015
Financial instruments whose contract amounts represent credit risk:
Unused commitments to extend credit	$	508,990	$	384,837
Standby letters of credit		10,886		13,450
Total	$	519,876	$	398,287

- Definition

Tabular disclosure of all significant concentrations of risk, including credit risk and market risk, arising from all financial instruments (as defined), whether from an individual counterparty or groups of counterparties. The disclosure concerning concentrations of risk may consist of the following information: (1) for concentrations of credit risk disclosure may include: (a) information about the (shared) activity, region, or economic characteristic that identifies the concentration, (b) the maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity, (c) the policy of requiring collateral or other security to support financial instruments subject to credit risk, information about the entity's access to that collateral or other security, and the nature and a brief description of the collateral or other security supporting those financial instruments, and (d) the policy of entering into master netting arrangements to mitigate the credit risk of financial instruments, information about the arrangements for which the entity is a party, and a brief description of the terms of those arrangements, including the extent to which they would reduce the entity's maximum amount of loss due to credit risk and (2) for disclosure of quantitative information about the market risks of financial instruments that is consistent with the way the company manages or adjusts those risks, disclosure may include: (a) more details about current positions and perhaps activity during the period, (b) the hypothetical effects on comprehensive income (or net assets), or annual income, of several possible changes in market prices, (c) a gap analysis of interest rate re-pricing or maturity dates, (d) the duration of the financial instruments, (e) the entity's value at risk from derivatives and from other positions at the end of the reporting period and the average value at risk during the year, or (f) other ways of reporting quantitative information as internally developed.

+ References + Details

Regulatory Matters And Restrictions On Dividends (Tables)

12 Months Ended

Dec. 31, 2016

Banking And Thrift [Abstract]

Schedule of Capital Amounts and Ratios

	Actual					Minimum capital requirement (1)					Minimum to be well-capitalized (2)
	Amount		Ratio			Amount		Ratio			Amount		Ratio
At December 31, 2016:
Total capital to risk-weighted assets:
CapStar Financial Holdings, Inc.	$	149,616		12.6	%	$	95,028		8.0	%	$ N/A		N/A
CapStar Bank		126,718		10.7			95,028		8.0			118,785		10.0
Tier I capital to risk-weighted assets:
CapStar Financial Holdings, Inc.		137,909		11.6			71,271		6.0		N/A		N/A
CapStar Bank		115,011		9.7			71,271		6.0			95,028		8.0
Common equity Tier 1 capital to risk weighted assets:
CapStar Financial Holdings, Inc.		129,528		10.9			53,453		4.5		N/A		N/A
CapStar Bank		99,130		8.3			53,453		4.5			77,210		6.5
Tier I capital to average assets:
CapStar Financial Holdings, Inc.		137,909		10.5			52,727		4.0		N/A		N/A
CapStar Bank		115,011		8.7			52,727		4.0			65,909		5.0
At December 31, 2015:
Total capital to risk-weighted assets	$	116,047		11.4	%	$	81,224		8.0	%	$	101,530		10.0	%
Tier I capital to risk-weighted assets		105,749		10.4			60,918		6.0			81,224		8.0
Common equity tier 1 capital		90,272		8.9			45,688		4.5			65,994		6.5
Tier I capital to average assets		105,749		9.3			45,328		4.0			56,660		5.0

Stock Options and Restricted Shares (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Company Recognized Stock-Based Compensation Expense

	For the year ended December 31,
	2016			2015			2014
Stock-based compensation expense before income taxes	$	842		$	438		$	261
Less: deferred tax benefit		(279	)		(138	)		(85	)
Reduction of net income	$	563		$	300		$	176

Summary of Changes in Company's Nonvested Restricted Shares

A summary of the changes in the Company’s nonvested restricted shares for 2016 follows:

				Weighted
				Average
	Restricted			Grant Date
Nonvested Shares	Shares			Fair Value
Nonvested at beginning of period		138,453		$	11.16
Granted		126,851			12.86
Vested		(40,596	)		10.34
Forfeited		(25,067	)		11.68
Nonvested at end of period		199,641		$	12.34

Summary of Fair Value of Options Granted Using Weighted Average Assumptions

The fair value of options granted was determined using the following weighted average assumptions as of the grant date:

	2016			2015
Dividend yield		—			—
Expected term (in years)		7.48			7.29
Expected stock price volatility		17.20	%		21.26	%
Risk-free interest rate		1.66	%		1.86	%
Pre-vest forfeiture rate		10.25	%		10.33	%

Summary of Activity in Stock Options

A summary of the activity in stock options for 2016 follows:

						Weighted
				Weighted		Average
				Average		Remaining
				Exercise		Contractual
	Shares			Price		Term (years)
Outstanding at beginning of period		1,018,500		$	10.42
Granted		32,500			13.22
Exercised		(8,125	)		11.85
Forfeited or expired		(36,875	)		11.05
Outstanding at end of period		1,006,000		$	10.48		3.1
Fully vested and expected to vest		996,803		$	10.46		3.1
Exercisable at end of period		929,750		$	10.35		2.7

Information Related to Stock Options

Information related to stock options during 2016 and 2015 follows:

	2016		2015
Intrinsic value of options exercised	$	53,756	$	1,410
Cash received from option exercises		96,306		10,000
Tax benefit realized from option exercises		20,583		900
Weighted average fair value of options granted		3.16		3.20

Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2016

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Summary of Interest-Rate Swaps Designated as Cash Flow Hedges

Summary information about the interest-rate swaps designated as cash flow hedges was as follows (dollars in thousands):

	December 31, 2016			December 31, 2015
Notional amounts	$	20,000		$	35,000
Weighted average pay rates		3.54	%		3.67	%
Weighted average receive rates	3 month LIBOR			3 month LIBOR
Weighted average maturity	6.5 years			7.4 years
Fair value	$	(1,535	)	$	(3,158	)
Amount of unrealized loss recognized in accumulated other comprehensive income, net of tax	$	(947	)	$	(1,949	)

Summary of Customer Related Interest Rate Swaps

A summary of the Company’s customer related interest rate swaps is as follows (in thousands):

	December 31, 2016					December 31, 2015
	Notional		Estimated			Notional		Estimated
	amount		fair value			amount		fair value
Interest rate swap agreements:
Pay fixed/receive variable swaps	$	41,254	$	460		$	45,675	$	(726	)
Pay variable/receive fixed swaps		41,254		(460	)		45,675		726
Total	$	82,508	$	—		$	91,350	$	—

Related Party (Tables)

12 Months Ended

Dec. 31, 2016

	Total commitment			Total funded commitment
Balance December 31, 2015	$	27,501		$	17,770
New commitments/draw downs		4,805			4,692
Repayments		(1,230	)		(2,137	)
Balance December 31, 2016	$	31,076		$	20,325

Fair Value (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis

Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands):

	Fair value measurements at December 31, 2016
				Quoted prices
				in active		Significant
				markets for		other			Significant
				identical		observable			unobservable
	Carrying			assets		inputs			inputs
	Value			(Level 1)		(Level 2)			(Level 3)
Assets:
Securities available for sale:
U.S. government-sponsored agencies	$	9,374		$	—	$	9,374		$	—
Obligations of states and political subdivisions		27,913			—		27,913			—
Mortage-backed securities-residential		124,595			—		124,595			—
Asset-backed securities		20,473			—		20,473			—
Total securities available for sale	$	182,355		$	—	$	182,355		$	—
Derivatives:
Interest rate swaps - customer related	$	460		$	—	$	460		$	—
Liabilities:
Derivatives:
Interest rate swaps - customer related	$	(460	)	$	—	$	(460	)	$	—
Interest rate swaps - cash flow hedges		(1,535	)		—		(1,535	)		—
Total derivatives	$	(1,994	)	$	—	$	(1,994	)	$	—

	Fair value measurements at December 31, 2015
				Quoted prices
				in active		Significant
				markets for		other			Significant
				identical		observable			unobservable
	Carrying			assets		inputs			inputs
	Value			(Level 1)		(Level 2)			(Level 3)
Assets:
Securities available for sale:
U.S. government-sponsored agencies	$	19,542		$	—	$	19,542		$	—
Obligations of states and political subdivisions		13,868			—		13,868			—
Mortage-backed securities-residential		118,380			—		118,380			—
Asset-backed securities		21,593			3,526		18,067			—
Total securities available for sale	$	173,383		$	3,526	$	169,857		$	—
Derivatives:
Interest rate swaps - customer related	$	726		$	—	$	726		$	—
Liabilities:
Derivatives:
Interest rate swaps - customer related	$	(726	)	$	—	$	(726	)	$	—
Interest rate swaps - cash flow hedges		(3,158	)		—		(3,158	)		—
Total derivatives	$	(3,884	)	$	—	$	(3,884	)	$	—

Summary of Assets Measured at Fair Value on a Nonrecurring Basis

Assets measured at fair value on a nonrecurring basis are summarized below (in thousands):

Fair value measurements at December 31, 2016

Quoted prices

in active

Significant

markets for

other

Significant

identical

observable

unobservable

Carrying

assets

inputs

Value

(level 1)

(level 2)

(level 3)

Assets:

Impaired loans:

Commercial and industrial

2,309

—

2,309

Fair value measurements at December 31, 2015

Quoted prices

in active

Significant

markets for

other

Significant

identical

observable

unobservable

Carrying

assets

inputs

Value

(level 1)

(level 2)

(level 3)

Assets:

Impaired loans:

Commercial real estate

1,383

—

1,383

Other real estate owned:

Construction and land development

216

—

216

Summary of Quantitative Information About Level 3 Fair Value Measurements for Assets Measured at Fair Value on a Non-recurring Basis

Range

Fair

Valuation

Unobservable

(Weighted-

December 31, 2016

Value

Technique(s)

Input(s)

Average)

Impaired loans:

Commercial and industrial

2,309

Sales comparison approach

Appraisal discounts

Range

Fair

Valuation

Unobservable

(Weighted-

December 31, 2015

Value

Technique(s)

Input(s)

Average)

Impaired loans:

Commercial real estate

1,383

Sales comparison approach

Appraisal discounts

Other real estate owned:

Construction and land development

216

Sales comparison approach

Appraisal discounts

Summary of Carrying Value and Fair Values of the Bank's Financial Instruments

The carrying value and estimated fair values of the Company’s financial instruments at December 31, 2016 and 2015 were as follows (in thousands):

	December 31, 2016				December 31, 2015
	Carrying				Carrying
	amount		Fair value		amount		Fair value
Financial assets:
Cash and due from banks, interest-bearing deposits in financial institutions	$	63,456	$	63,456	$	93,455	$	93,455
Federal funds sold		16,654		16,654		6,730		6,730
Securities available for sale		182,355		182,355		173,383		173,383
Securities held to maturity		46,864		49,731		43,094		46,459
Loans held for sale		42,111		42,302		35,729		36,552
Restricted equity securities		6,032	N/A			5,414	N/A
Loans, net		935,251		934,628		798,264		806,030
Accrued interest receivable		3,942		3,942		3,030		3,030
Bank owned life insurance		21,900		21,900		21,299		21,299
Other assets		460		460		726		726
Financial liabilities:
Deposits		1,128,722		1,088,758		1,038,460		1,035,978
Securities sold under repurchase agreements		—		—		3,755		3,755
Federal Home Loan Bank advances		55,000		54,989		45,000		44,926
Accrued interest payable		212		212		177		177
Other liabilities		5,349		5,349		6,536		6,536

Parent Company Only Financial Information (Tables)

12 Months Ended

Dec. 31, 2016

Condensed Financial Information Of Parent Company Only Disclosure [Abstract]

Condensed Balance Sheet

	December 31, 2016
Assets
Cash and cash equivalents	$	22,952,354
Investment in consolidated subsidiary		116,309,922
Total assets	$	139,262,276
Liabilities and Shareholders’ Equity
Other liabilities	$	54,880
Total shareholders’ equity		139,207,396
Total liabilities and shareholders’ equity	$	139,262,276

Condensed Income Statement

	Year Ended
	December 31, 2016
Income - dividends from subsidiary	$	1,500,000
Expenses		741,691
Income before income taxes and equity in undistributed net income of subsidiary		758,309
Income tax benefit		(258,528	)
Income before equity in undistributed net income of subsidiary		1,016,837
Equity in undistributed net income of subsidiary		7,366,019
Net income	$	8,382,856

Condensed Statement of Cash Flows

	Year Ended
	December 31, 2016
Cash flows from operating activities:
Net income	$	8,382,856
Adjustments to reconcile net income to net cash provided by operating activities:
Increase in other liabilities		54,880
Excess tax benefit from stock compensation		(61,217	)
Equity in undistributed net income of subsidiary		(7,366,019	)
Net cash provided by operating activities		1,010,500
Cash flows from financing activities:
Issuance of common stock		21,562,716
Exercise of common stock options and warrants, net of repurchase of restricted shares		317,921
Excess tax benefit from stock compensation		61,217
Net cash provided by financing activities		21,941,854
Net increase in cash and cash equivalents		22,952,354
Cash and cash equivalents at beginning of period		—
Cash and cash equivalents at end of period	$	22,952,354

Quarterly Financial Results (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Results (Unaudited)

The following is a summary of quarterly financial results (unaudited) for 2016, 2015 and 2014:

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2016
Interest income	$	10,598,178	$	10,914,739	$	11,874,605	$	12,007,234
Interest expense		1,641,903		1,713,584		1,749,090		1,826,961
Net interest income		8,956,275		9,201,155		10,125,515		10,180,273
Provision for loan and lease losses		937,216		182,863		1,638,669		69,884
Net interest income after provision for loan and lease losses		8,019,059		9,018,292		8,486,845		10,110,389
Noninterest income		2,370,772		2,568,192		3,191,463		2,954,021
Noninterest expense		8,009,741		7,950,794		8,526,805		8,641,506
Net income before income tax expense		2,380,090		3,635,690		3,151,504		4,422,904
Income tax expense		796,245		1,159,438		1,042,282		1,495,445
Net income	$	1,583,845	$	2,476,252	$	2,109,222	$	2,927,460
Net income per share, basic	$	0.18	$	0.29	$	0.24	$	0.26
Net income per share, diluted	$	0.15	$	0.23	$	0.20	$	0.23
2015
Interest income	$	9,619,954	$	9,809,759	$	10,802,646	$	10,271,373
Interest expense		1,450,101		1,460,851		1,385,632		1,433,927
Net interest income		8,169,853		8,348,908		9,417,015		8,837,446
Provision for loan and lease losses		135,675		585,000		580,000		350,000
Net interest income after provision for loan and lease losses		8,034,178		7,763,908		8,837,015		8,487,446
Noninterest income		1,911,804		2,418,890		2,634,659		1,918,157
Noninterest expense		7,718,367		7,331,488		8,603,899		7,323,020
Net income before income tax expense		2,227,615		2,851,311		2,867,774		3,082,583
Income tax expense		658,924		990,000		831,307		989,615
Net income	$	1,568,690	$	1,861,310	$	2,036,468	$	2,092,968
Net income per share, basic	$	0.18	$	0.22	$	0.24	$	0.24
Net income per share, diluted	$	0.15	$	0.18	$	0.20	$	0.20
2014
Interest income	$	9,204,274	$	9,308,583	$	9,478,772	$	10,295,115
Interest expense		1,492,690		1,414,085		1,462,025		1,502,095
Net interest income		7,711,584		7,894,498		8,016,747		8,793,020
Provision for loan and lease losses		113,369		586,500		0		3,168,986
Net interest income after provision for loan and lease losses		7,598,215		7,307,998		8,016,747		5,624,034
Noninterest income		1,109,505		1,873,777		2,557,692		1,878,269
Noninterest expense		6,977,181		7,633,590		7,373,935		6,577,399
Net income before income tax expense		1,730,539		1,548,185		3,200,504		924,903
Income tax expense		540,562		509,403		1,128,460		233,961
Net income	$	1,189,976	$	1,038,782	$	2,072,044	$	690,942
Net income per share, basic	$	0.14	$	0.12	$	0.24	$	0.08
Net income per share, diluted	$	0.12	$	0.10	$	0.20	$	0.07

Summary of Significant Accounting Policies - Additional Information (Details)		12 Months Ended
	Sep. 27, 2016 USD ($) shares	Dec. 31, 2016 USD ($) Security shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares
Summary Of Significant Accounting Policies [Line Items]
Date of acquisition		Feb. 05, 2016
Cashless exercise		250,000
Number of Securities \| Security		3
Accrual of interest on loans due discontinued period		90 days
Minimum loan losses exposure for formal credit review \| $		$ 1,500,000
Look-back period		28 quarters	24 quarter
Deferred liability, operating lease rentals \| $		$ 161,000
Income tax examination description		A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded.
Tax benefit from income tax examination \| $		$ 0
Advertising expense \| $		252,000	$ 310,000	$ 460,000
Restricted balance of cash reserve with Federal Reserve Bank \| $		$ 40,902,000	$ 27,105,000
Antidilutive stock options excluded from diluted earnings per share		0	203,000	133,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Premises and equipment, useful lives		3 years
Income tax benefit recognized percentage		50.00%
Minimum \| Core Deposit
Summary Of Significant Accounting Policies [Line Items]
Intangible assets, useful lives		5 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Premises and equipment, useful lives		39 years
Maximum \| Core Deposit
Summary Of Significant Accounting Policies [Line Items]
Intangible assets, useful lives		6 years
Consumer Loan
Summary Of Significant Accounting Policies [Line Items]
Accrual of interest on loans due charged off		180 days
Common Stock
Summary Of Significant Accounting Policies [Line Items]
Issuance of common stock, shares		1,688,049
Exercise of common stock warrants, shares		100,023
Initial Public Offering \| Common Stock
Summary Of Significant Accounting Policies [Line Items]
Issuance of common stock, shares	2,972,750
Preferred shares converted to common stock		731,707
Net proceeds from issuance \| $	$ 21,600,000
Initial Public Offering by the Company \| Common Stock
Summary Of Significant Accounting Policies [Line Items]
Issuance of common stock, shares	1,688,049
Initial Public Offering by certain selling shareholders \| Common Stock
Summary Of Significant Accounting Policies [Line Items]
Issuance of common stock, shares	1,284,701
Preferred shares converted to common stock	731,707
Cashless exercise	79,166
Exercise of common stock warrants, shares	250,000
Net proceeds from issuance \| $	$ 0

Summary of Significant Accounting Policies - Summary of Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Basic net income per share calculation:
Numerator – Net income													$ 9,096,778	$ 7,559,436	$ 4,991,744
Denominator – Average shares of common stock outstanding													9,328,236	8,538,970	8,456,386
Basic net income per share of common stock	$ 0.26	$ 0.24	$ 0.29	$ 0.18	$ 0.24	$ 0.24	$ 0.22	$ 0.18	$ 0.08	$ 0.24	$ 0.12	$ 0.14	$ 0.98	$ 0.89	$ 0.59
Diluted net income per share calculation:
Numerator – Net income													$ 9,096,778	$ 7,559,436	$ 4,991,744
Denominator – Average shares of common stock outstanding													9,328,236	8,538,970	8,456,386
Dilutive shares contingently issuable													1,883,790	1,842,925	1,824,658
Average diluted shares of common stock outstanding													11,212,026	10,381,895	10,281,044
Diluted net income per share of common stock	$ 0.23	$ 0.20	$ 0.23	$ 0.15	$ 0.20	$ 0.20	$ 0.18	$ 0.15	$ 0.07	$ 0.20	$ 0.10	$ 0.12	$ 0.81	$ 0.73	$ 0.49

Business Combinations - Additional Information (Details) - USD ($)	Feb. 03, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill		$ 6,218,867	$ 6,218,867	$ 6,219,000
Farmington
Business Acquisition [Line Items]
Total consideration	$ 6,354,000
Goodwill	6,168,000
Goodwill expected to be deductible for income taxes purposes	$ 4,000,000
Contingent consideration earn out period	5 years
Total contingent consideration payable, low	$ 2,000,000
Total contingent consideration payable, high	$ 4,200,000

Business Combinations - Summary of Consideration Paid for Farmington and Amounts of Assets Acquired and Liabilities Assumed (Details) - USD ($)		12 Months Ended
	Feb. 03, 2014	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Consideration:
Cash		$ 3,000,000
Fair value of liabilities assumed:
Goodwill		$ 6,219,000	$ 6,218,867	$ 6,218,867
Farmington
Consideration:
Cash	$ 3,000,000
Equity instruments	1,148,000
Contingent consideration	2,206,000
Fair value of total consideration transferred	6,354,000
Fair value of assets acquired:
Loans held for sale	4,111,000
Premises and equipment	102,000
Total assets acquired	4,213,000
Fair value of liabilities assumed:
Warehouse line of credit	3,996,000
Other liabilities	31,000
Total liabilities assumed	4,027,000
Total identifiable net assets acquired	186,000
Goodwill	6,168,000
Net assets acquired	$ 6,354,000

Investment Securities - Summary of Company's Classification of Securities (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Securities available for sale [Abstract]
Amortized Cost	$ 186,254,000	$ 175,980,000
Gross unrealized gains	82,000	128,000
Gross unrealized (losses)	(3,981,000)	(2,725,000)
Securities available for sale, at fair value	182,354,987	173,382,957
Securities held to maturity [Abstract]
Amortized Cost	46,864,000	43,094,000
Gross unrealized gains	2,874,000	3,365,000
Gross unrealized (losses)	(7,000)
Estimated fair value	49,731,169	46,458,841
U. S. government agency securities
Securities available for sale [Abstract]
Amortized Cost	9,517,000	19,562,000
Gross unrealized gains		16,000
Gross unrealized (losses)	(143,000)	(36,000)
Securities available for sale, at fair value	9,374,000	19,542,000
State and municipal securities
Securities available for sale [Abstract]
Amortized Cost	28,480,000	13,776,000
Gross unrealized gains	65,000	99,000
Gross unrealized (losses)	(632,000)	(7,000)
Securities available for sale, at fair value	27,913,000	13,868,000
Securities held to maturity [Abstract]
Amortized Cost	36,842,000	37,005,000
Gross unrealized gains	2,784,000	3,245,000
Estimated fair value	39,626,000	40,250,000
Mortgage-backed securities
Securities available for sale [Abstract]
Amortized Cost	126,637,000	119,828,000
Gross unrealized gains	17,000	13,000
Gross unrealized (losses)	(2,059,000)	(1,461,000)
Securities available for sale, at fair value	124,595,000	118,380,000
Securities held to maturity [Abstract]
Amortized Cost	4,687,000	6,089,000
Gross unrealized gains	79,000	120,000
Estimated fair value	4,766,000	6,209,000
Asset-backed securities
Securities available for sale [Abstract]
Amortized Cost	21,620,000	22,814,000
Gross unrealized (losses)	(1,147,000)	(1,221,000)
Securities available for sale, at fair value	20,473,000	$ 21,593,000
Other debt securities
Securities held to maturity [Abstract]
Amortized Cost	5,335,000
Gross unrealized gains	11,000
Gross unrealized (losses)	(7,000)
Estimated fair value	$ 5,339,000

Investment Securities - Additional Information (Details) - USD ($)	3 Months Ended
	Sep. 30, 2013	Dec. 31, 2016	Dec. 31, 2015
Schedule Of Available For Sale Securities [Line Items]
Available for sale securities transferred to held to maturity	$ 36,789,000
Securities Other Than U S Government and Agencies
Schedule Of Available For Sale Securities [Line Items]
Holdings of securities of any one issuer greater than ten percent of stockholder's equity		$ 0	$ 0
Public Deposits, Securities Sold Under Repurchase Agreements, Derivative Positions and Federal Home Loan Bank Advances
Schedule Of Available For Sale Securities [Line Items]
Carrying value of securities		$ 133,297,000	$ 146,921,000

Investment Securities - Summary of Amortized Cost and Fair Value of Debt and Equity Securities by Contractual Maturity (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale, Amortized cost [Abstract]
Due one to five years	$ 11,425,000
Due five to ten years	21,077,000
Due beyond ten years	5,495,000
Mortgage-backed securities	126,637,000
Asset-backed securities	21,620,000
Amortized cost	186,254,000
Available-for-sale, Estimated fair value [Abstract]
Due one to five years	11,319,000
Due five to ten years	20,841,000
Due beyond ten years	5,127,000
Mortgage-backed securities	124,595,000
Asset-backed securities	20,473,000
Estimated fair value	182,355,000
Held-to-maturity, Amortized cost [Abstract]
Due one to five years	17,628,000
Due five to ten years	16,732,000
Due beyond ten years	7,817,000
Mortgage-backed securities	4,687,000
Amortized Cost	46,864,000	$ 43,094,000
Securities held to maturity [Abstract]
Due one to five years	18,500,000
Due five to ten years	17,761,000
Due beyond ten years	8,704,000
Mortgage-backed securities	4,766,000
Estimated fair value	$ 49,731,169	$ 46,458,841

Investment Securities - Summary of Sale of Debt and Equity Securities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Available for sale:
Proceeds from sales of securities	$ 46,700,357	$ 90,445,352	$ 161,603,143
Gross realized gains	244,000	261,000	520,000
Gross realized losses	$ (123,000)	$ (206,000)	$ (507,000)

Investment Securities - Summary of Securities with Unrealized Losses Aggregated by Major Security Type and Length of Time in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	$ 142,245	$ 113,353
Less than 12 months, Gross unrealized (losses)	(2,737)	(1,111)
12 months or more, Estimated fair value	24,623	37,853
12 months or more, Gross unrealized losses	(1,251)	(1,614)
Total, Estimated fair value	166,868	151,206
Total, Gross unrealized losses	(3,988)	(2,725)
U. S. government agency securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	9,374	13,100
Less than 12 months, Gross unrealized (losses)	(143)	(36)
Total, Estimated fair value	9,374	13,100
Total, Gross unrealized losses	(143)	(36)
State and municipal securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	20,279	3,099
Less than 12 months, Gross unrealized (losses)	(632)	(7)
Total, Estimated fair value	20,279	3,099
Total, Gross unrealized losses	(632)	(7)
Mortgage-backed securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	110,563	97,154
Less than 12 months, Gross unrealized (losses)	(1,955)	(1,068)
12 months or more, Estimated fair value	4,150	16,260
12 months or more, Gross unrealized losses	(104)	(393)
Total, Estimated fair value	114,713	113,414
Total, Gross unrealized losses	(2,059)	(1,461)
Asset-backed securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
12 months or more, Estimated fair value	20,473	21,593
12 months or more, Gross unrealized losses	(1,147)	(1,221)
Total, Estimated fair value	20,473	21,593
Total, Gross unrealized losses	(1,147)	$ (1,221)
Other debt securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	2,029
Less than 12 months, Gross unrealized (losses)	(7)
Total, Estimated fair value	2,029
Total, Gross unrealized losses	$ (7)

Loans and Allowance for Loan And Lease Losses - Summary of Loans (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loans And Leases Receivable Disclosure [Line Items]
Total loans	$ 936,218,000	$ 809,811,000	$ 714,591,000
Less net unearned income	(967,000)	(1,415,000)
Loans and leases , net of unearned income	935,250,703	808,396,064
Less allowance for loan and lease losses	(11,633,531)	(10,131,729)	(11,282,000)	$ (8,459,000)
Loans, net	923,617,172	798,264,335
Commercial real estate
Loans And Leases Receivable Disclosure [Line Items]
Total loans	302,322,000	251,197,000	219,793,000
Less allowance for loan and lease losses	(2,655,000)	(2,879,000)	(1,535,000)	(1,408,000)
Consumer real estate
Loans And Leases Receivable Disclosure [Line Items]
Total loans	97,015,000	93,785,000	77,688,000
Less allowance for loan and lease losses	(1,013,000)	(968,000)	(621,000)	(688,000)
Construction and land development
Loans And Leases Receivable Disclosure [Line Items]
Total loans	94,491,000	52,522,000	46,193,000
Less allowance for loan and lease losses	(1,574,000)	(914,000)	(408,000)	(332,000)
Commercial and industrial
Loans And Leases Receivable Disclosure [Line Items]
Total loans	379,620,000	353,442,000	333,613,000
Less allowance for loan and lease losses	(5,618,000)	(4,693,000)	(8,540,000)	(5,870,000)
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Total loans	5,974,000	8,668,000	7,911,000
Less allowance for loan and lease losses	(76,000)	(103,000)	(75,000)	(81,000)
Other
Loans And Leases Receivable Disclosure [Line Items]
Total loans	56,796,000	50,197,000	29,393,000
Less allowance for loan and lease losses	$ (698,000)	$ (575,000)	$ (103,000)	$ (80,000)

Loans and Allowance for Loan And Lease Losses - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Loans And Leases Receivable Disclosure [Line Items]
Variable-rate loans	$ 546,848,000	$ 401,800,000
Fixed-rate loans	389,370,000	408,011,000
Minimum loan amount for loans analyzed by credit risk	500,000
Total loans	936,218,000	809,811,000	$ 714,591,000
Loans past due not on nonaccrual status	0	0
Investments in TDR	1,300,000	100,000
Additional commitments related to TDR	0	0
Allowance for loan and lease losses, charge-off	$ 1,452,000	3,206,000	1,147,000
Loan period considered as payment default	30 days
Loss on purchase of loan	$ 0	173,000,000
Minimum
Loans And Leases Receivable Disclosure [Line Items]
Lease term	2 years
Maximum
Loans And Leases Receivable Disclosure [Line Items]
Lease term	6 years
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Total loans	$ 5,974,000	8,668,000	7,911,000
Allowance for loan and lease losses, specific reserve	0
Allowance for loan and lease losses, charge-off	146,000		182,000
Subsequent default TDR charge-off	100,000
Commercial and industrial
Loans And Leases Receivable Disclosure [Line Items]
Total loans	379,620,000	353,442,000	333,613,000
Allowance for loan and lease losses, specific reserve		2,400,000
Allowance for loan and lease losses, charge-off	956,000	3,033,000	$ 816,000
Subsequent default TDR charge-off		2,500,000
Doubtful
Loans And Leases Receivable Disclosure [Line Items]
Total loans	$ 0	$ 0

Loans and Allowance for Loan And Lease Losses - Summary of Risk Category of Loans by Applicable Class of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 936,218	$ 809,811	$ 714,591
Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	3,619	2,677
Commercial real estate
Financing Receivable Recorded Investment [Line Items]
Total loans	302,322	251,197	219,793
Commercial real estate \| Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	1,310	1,948
Consumer real estate
Financing Receivable Recorded Investment [Line Items]
Total loans	97,015	93,785	77,688
Consumer real estate \| Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans		604
Construction and land development
Financing Receivable Recorded Investment [Line Items]
Total loans	94,491	52,522	46,193
Commercial and industrial
Financing Receivable Recorded Investment [Line Items]
Total loans	379,620	353,442	333,613
Commercial and industrial \| Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	2,309
Consumer
Financing Receivable Recorded Investment [Line Items]
Total loans	5,974	8,668	7,911
Consumer \| Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans		125
Other
Financing Receivable Recorded Investment [Line Items]
Total loans	56,796	50,197	$ 29,393
Performing Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	932,599	807,134
Performing Loans \| Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	904,836	791,798
Performing Loans \| Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans	11,035	6,230
Performing Loans \| Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	16,728	9,106
Performing Loans \| Commercial real estate
Financing Receivable Recorded Investment [Line Items]
Total loans	301,012	249,249
Performing Loans \| Commercial real estate \| Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	301,012	249,249
Performing Loans \| Consumer real estate
Financing Receivable Recorded Investment [Line Items]
Total loans	97,015	93,181
Performing Loans \| Consumer real estate \| Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	96,722	93,181
Performing Loans \| Consumer real estate \| Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	293
Performing Loans \| Construction and land development
Financing Receivable Recorded Investment [Line Items]
Total loans	94,491	52,522
Performing Loans \| Construction and land development \| Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	94,491	52,522
Performing Loans \| Commercial and industrial
Financing Receivable Recorded Investment [Line Items]
Total loans	377,311	353,442
Performing Loans \| Commercial and industrial \| Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	349,857	338,106
Performing Loans \| Commercial and industrial \| Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans	11,035	6,230
Performing Loans \| Commercial and industrial \| Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	16,419	9,106
Performing Loans \| Consumer
Financing Receivable Recorded Investment [Line Items]
Total loans	5,974	8,543
Performing Loans \| Consumer \| Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	5,958	8,543
Performing Loans \| Consumer \| Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	16
Performing Loans \| Other
Financing Receivable Recorded Investment [Line Items]
Total loans	56,796	50,197
Performing Loans \| Other \| Pass
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 56,796	$ 50,197

Loans and Allowance for Loan and Lease Losses - Summary of Changes in Allowance for Loan Losses by Loan Classification (Details) - USD ($)	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allowance for Loan and Lease Losses:
Beginning Balance				$ 10,131,729				$ 11,282,000				$ 8,459,000	$ 10,131,729	$ 11,282,000	$ 8,459,000
Charged-off loans													(1,452,000)	(3,206,000)	(1,147,000)
Recoveries													125,000	405,000	101,000
Provision for loan and lease losses	$ 69,884	$ 1,638,669	$ 182,863	937,216	$ 350,000	$ 580,000	$ 585,000	135,675	$ 3,168,986	$ 0	$ 586,500	113,369	2,828,633	1,650,675	3,868,855
Ending Balance	11,633,531				10,131,729				11,282,000				11,633,531	10,131,729	11,282,000
Collectively evaluated for impairment	11,134,000				9,567,000				8,251,000				11,134,000	9,567,000	8,251,000
Individually evaluated for impairment	500,000				565,000				2,858,000				500,000	565,000	2,858,000
Loans:
Collectively evaluated for impairment	932,599,000				807,134,000				706,853,000				932,599,000	807,134,000	706,853,000
Individually evaluated for impairment	3,619,000				2,677,000				6,563,000				3,619,000	2,677,000	6,563,000
Ending Balance	936,218,000				809,811,000				714,591,000				936,218,000	809,811,000	714,591,000
Receivables Acquired with Deteriorated Credit Quality
Allowance for Loan and Lease Losses:
Loans acquired with deteriorated credit quality	0				0				173,000				0	0	173,000
Loans:
Loans acquired with deteriorated credit quality	0				0				1,175,000				0	0	1,175,000
Commercial real estate
Allowance for Loan and Lease Losses:
Beginning Balance				2,879,000				1,535,000				1,408,000	2,879,000	1,535,000	1,408,000
Charged-off loans													(350,000)		(92,000)
Recoveries													52,000	31,000
Provision for loan and lease losses													74,000	1,313,000	219,000
Ending Balance	2,655,000				2,879,000				1,535,000				2,655,000	2,879,000	1,535,000
Collectively evaluated for impairment	2,655,000				2,314,000				1,250,000				2,655,000	2,314,000	1,250,000
Individually evaluated for impairment	0				565,000				285,000				0	565,000	285,000
Loans:
Collectively evaluated for impairment	301,012,000				249,249,000				217,628,000				301,012,000	249,249,000	217,628,000
Individually evaluated for impairment	1,310,000				1,948,000				2,165,000				1,310,000	1,948,000	2,165,000
Ending Balance	302,322,000				251,197,000				219,793,000				302,322,000	251,197,000	219,793,000
Commercial real estate \| Receivables Acquired with Deteriorated Credit Quality
Allowance for Loan and Lease Losses:
Loans acquired with deteriorated credit quality	0				0				0				0	0	0
Loans:
Loans acquired with deteriorated credit quality	0				0				0				0	0	0
Consumer real estate
Allowance for Loan and Lease Losses:
Beginning Balance				968,000				621,000				688,000	968,000	621,000	688,000
Charged-off loans														(173,000)	(57,000)
Recoveries														68,000	21,000
Provision for loan and lease losses													45,000	452,000	(31,000)
Ending Balance	1,013,000				968,000				621,000				1,013,000	968,000	621,000
Collectively evaluated for impairment	1,013,000				968,000				448,000				1,013,000	968,000	448,000
Individually evaluated for impairment	0								173,000				0		173,000
Loans:
Collectively evaluated for impairment	97,015,000				93,181,000				77,056,000				97,015,000	93,181,000	77,056,000
Individually evaluated for impairment					604,000				592,000					604,000	592,000
Ending Balance	97,015,000				93,785,000				77,688,000				97,015,000	93,785,000	77,688,000
Consumer real estate \| Receivables Acquired with Deteriorated Credit Quality
Allowance for Loan and Lease Losses:
Loans acquired with deteriorated credit quality	0				0				0				0	0	0
Loans:
Loans acquired with deteriorated credit quality	0				0				40,000				0	0	40,000
Construction and land development
Allowance for Loan and Lease Losses:
Beginning Balance				914,000				408,000				332,000	914,000	408,000	332,000
Provision for loan and lease losses													660,000	506,000	76,000
Ending Balance	1,574,000				914,000				408,000				1,574,000	914,000	408,000
Collectively evaluated for impairment	1,574,000				914,000				235,000				1,574,000	914,000	235,000
Individually evaluated for impairment	0												0
Loans:
Collectively evaluated for impairment	94,491,000				52,522,000				45,058,000				94,491,000	52,522,000	45,058,000
Ending Balance	94,491,000				52,522,000				46,193,000				94,491,000	52,522,000	46,193,000
Construction and land development \| Receivables Acquired with Deteriorated Credit Quality
Allowance for Loan and Lease Losses:
Loans acquired with deteriorated credit quality	0				0				173,000				0	0	173,000
Loans:
Loans acquired with deteriorated credit quality	0				0				1,135,000				0	0	1,135,000
Commercial and industrial
Allowance for Loan and Lease Losses:
Beginning Balance				4,693,000				8,540,000				5,870,000	4,693,000	8,540,000	5,870,000
Charged-off loans													(956,000)	(3,033,000)	(816,000)
Recoveries													23,000	299,000	52,000
Provision for loan and lease losses													1,858,000	(1,113,000)	3,434,000
Ending Balance	5,618,000				4,693,000				8,540,000				5,618,000	4,693,000	8,540,000
Collectively evaluated for impairment	5,118,000				4,693,000				6,140,000				5,118,000	4,693,000	6,140,000
Individually evaluated for impairment	500,000								2,400,000				500,000		2,400,000
Loans:
Collectively evaluated for impairment	377,311,000				353,442,000				329,807,000				377,311,000	353,442,000	329,807,000
Individually evaluated for impairment	2,309,000								3,806,000				2,309,000		3,806,000
Ending Balance	379,620,000				353,442,000				333,613,000				379,620,000	353,442,000	333,613,000
Commercial and industrial \| Receivables Acquired with Deteriorated Credit Quality
Allowance for Loan and Lease Losses:
Loans acquired with deteriorated credit quality	0				0				0				0	0	0
Loans:
Loans acquired with deteriorated credit quality	0				0				0				0	0	0
Consumer
Allowance for Loan and Lease Losses:
Beginning Balance				103,000				75,000				81,000	103,000	75,000	81,000
Charged-off loans													(146,000)		(182,000)
Recoveries													50,000	7,000	28,000
Provision for loan and lease losses													69,000	21,000	148,000
Ending Balance	76,000				103,000				75,000				76,000	103,000	75,000
Collectively evaluated for impairment	76,000				103,000				75,000				76,000	103,000	75,000
Individually evaluated for impairment	0												0
Loans:
Collectively evaluated for impairment	5,974,000				8,543,000				7,911,000				5,974,000	8,543,000	7,911,000
Individually evaluated for impairment					125,000									125,000
Ending Balance	5,974,000				8,668,000				7,911,000				5,974,000	8,668,000	7,911,000
Consumer \| Receivables Acquired with Deteriorated Credit Quality
Allowance for Loan and Lease Losses:
Loans acquired with deteriorated credit quality	0				0				0				0	0	0
Loans:
Loans acquired with deteriorated credit quality	0				0				0				0	0	0
Other
Allowance for Loan and Lease Losses:
Beginning Balance				$ 575,000				$ 103,000				$ 80,000	575,000	103,000	80,000
Provision for loan and lease losses													123,000	472,000	23,000
Ending Balance	698,000				575,000				103,000				698,000	575,000	103,000
Collectively evaluated for impairment	698,000				575,000				103,000				698,000	575,000	103,000
Individually evaluated for impairment	0												0
Loans:
Collectively evaluated for impairment	56,796,000				50,197,000				29,393,000				56,796,000	50,197,000	29,393,000
Ending Balance	56,796,000				50,197,000				29,393,000				56,796,000	50,197,000	29,393,000
Other \| Receivables Acquired with Deteriorated Credit Quality
Allowance for Loan and Lease Losses:
Loans acquired with deteriorated credit quality	0				0				0				0	0	0
Loans:
Loans acquired with deteriorated credit quality	$ 0				$ 0				$ 0				$ 0	$ 0	$ 0

Loans and Allowance for Loan and Lease Losses - Allocation of ALLL with Corresponding Percentage of Loans in Each Category to Total Loans, Net of Deferred Fee (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 11,633,531	$ 10,131,729	$ 11,282,000	$ 8,459,000
Allowance for loan and lease losses, Percentage of total loans, net of deferred fees	1.24%	1.25%
Commercial real estate
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 2,655,000	$ 2,879,000	1,535,000	1,408,000
Allowance for loan and lease losses, Percentage of total loans, net of deferred fees	0.28%	0.36%
Consumer real estate
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 1,013,000	$ 968,000	621,000	688,000
Allowance for loan and lease losses, Percentage of total loans, net of deferred fees	0.11%	0.12%
Construction and land development
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 1,574,000	$ 914,000	408,000	332,000
Allowance for loan and lease losses, Percentage of total loans, net of deferred fees	0.17%	0.11%
Commercial and industrial
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 5,618,000	$ 4,693,000	8,540,000	5,870,000
Allowance for loan and lease losses, Percentage of total loans, net of deferred fees	0.60%	0.58%
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 76,000	$ 103,000	75,000	81,000
Allowance for loan and lease losses, Percentage of total loans, net of deferred fees	0.01%	0.01%
Other
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan and lease losses, Amount	$ 698,000	$ 575,000	$ 103,000	$ 80,000
Allowance for loan and lease losses, Percentage of total loans, net of deferred fees	0.07%	0.07%

Loans and Allowance for Loan and Lease Losses - Summary of Information Related to Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment	$ 1,310	$ 729
Impaired loans with no related allowance recorded, Unpaid principal balance	1,686	806
Impaired loans with an allowance recorded, Related allowance	500	565
Impaired loans with no related allowance recorded, Average recorded investment	1,020	1,056
Impaired loans with no related allowance recorded, Interest income recognized		5
Impaired loans with an allowance recorded, Recorded investment	2,309	1,948
Impaired loans with an allowance recorded, Unpaid principal balance	2,921	1,948
Impaired loans with an allowance recorded, Average recorded investment	2,129	4,154
Impaired loans with an allowance recorded, Interest income recognized	44
Recorded investment	3,619	2,677
Unpaid principal balance	4,607	2,754
Average recorded investment	3,148	5,210
Interest income recognized	44	5
Commercial real estate
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment	1,310
Impaired loans with no related allowance recorded, Unpaid principal balance	1,686
Impaired loans with an allowance recorded, Related allowance		565
Impaired loans with no related allowance recorded, Average recorded investment	655	42
Impaired loans with an allowance recorded, Recorded investment		1,948
Impaired loans with an allowance recorded, Unpaid principal balance		1,948
Impaired loans with an allowance recorded, Average recorded investment	974	2,015
Consumer real estate
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment		604
Impaired loans with no related allowance recorded, Unpaid principal balance		681
Impaired loans with no related allowance recorded, Average recorded investment	302	357
Impaired loans with an allowance recorded, Average recorded investment		262
Construction and land development
Financing Receivable Impaired [Line Items]
Impaired loans with an allowance recorded, Average recorded investment		568
Commercial and industrial
Financing Receivable Impaired [Line Items]
Impaired loans with an allowance recorded, Related allowance	500
Impaired loans with no related allowance recorded, Average recorded investment		594
Impaired loans with an allowance recorded, Recorded investment	2,309
Impaired loans with an allowance recorded, Unpaid principal balance	2,921
Impaired loans with an allowance recorded, Average recorded investment	1,155	1,309
Impaired loans with an allowance recorded, Interest income recognized	44
Consumer
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment		125
Impaired loans with no related allowance recorded, Unpaid principal balance		125
Impaired loans with no related allowance recorded, Average recorded investment	$ 63	63
Impaired loans with no related allowance recorded, Interest income recognized		$ 5

Loans and Allowance for Loan and Lease Losses - Schedule of Aging of Recorded Investment in Past-due Loans, by Class of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 363	$ 2,843
Loans Not Past Due	935,855	806,968
Total	936,218	809,811	$ 714,591
Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,948
Loans Not Past Due	302,322	249,249
Total	302,322	251,197	219,793
Consumer real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	363	770
Loans Not Past Due	96,652	93,015
Total	97,015	93,785	77,688
Construction and land development
Financing Receivable Recorded Investment Past Due [Line Items]
Loans Not Past Due	94,491	52,522
Total	94,491	52,522	46,193
Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Loans Not Past Due	379,620	353,442
Total	379,620	353,442	333,613
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		125
Loans Not Past Due	5,974	8,543
Total	5,974	8,668	7,911
Other
Financing Receivable Recorded Investment Past Due [Line Items]
Loans Not Past Due	56,796	50,197
Total	56,796	50,197	$ 29,393
30 - 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	81	100
30 - 59 Days Past Due [Member] \| Consumer real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	81	100
60 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	282	54
60 - 89 Days Past Due [Member] \| Consumer real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 282	54
Greater than 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		2,689
Greater than 89 Days Past Due [Member] \| Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,948
Greater than 89 Days Past Due [Member] \| Consumer real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		616
Greater than 89 Days Past Due [Member] \| Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 125

Loans and Allowance for Loan and Lease Losses - Schedule of Non-Accrual Loans and Troubled Debt Restructurings (TDR) by Class of Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual	$ 3,619	$ 2,689
Troubled Debt Restructurings	1,272	125
Commercial real estate
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual	1,310	1,948
Troubled Debt Restructurings	1,272
Consumer real estate
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual		616
Commercial and industrial
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual	$ 2,309
Consumer
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual		125
Troubled Debt Restructurings		$ 125

Loans and Allowance for Loan And Lease Losses - Schedule of Presents Loans by Class Modified as TDR (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Contract	Dec. 31, 2015 USD ($) Contract
Financing Receivable Modifications [Line Items]
Number of contracts \| Contract	1	1
Pre modification outstanding recorded investment	$ 1,948	$ 125
Post modification outstanding recorded investment, net of related allowance	$ 1,170	$ 125
Commercial real estate
Financing Receivable Modifications [Line Items]
Number of contracts \| Contract	1
Pre modification outstanding recorded investment	$ 1,948
Post modification outstanding recorded investment, net of related allowance	$ 1,170
Consumer
Financing Receivable Modifications [Line Items]
Number of contracts \| Contract		1
Pre modification outstanding recorded investment		$ 125
Post modification outstanding recorded investment, net of related allowance		$ 125

Loans and Allowance for Loan and Lease Losses - Schedule of Loans by Class Modified as TDR for the Payment Default Within Twelve Months(Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Contract	Dec. 31, 2015 Contract
Financing Receivable Modifications [Line Items]
Number of contracts	1	1
Recorded investment \| $	$ 124
Commercial and industrial
Financing Receivable Modifications [Line Items]
Number of contracts		1
Consumer
Financing Receivable Modifications [Line Items]
Number of contracts	1
Recorded investment \| $	$ 124

Loans and Allowance for Loan and Lease Losses - Schedule of Accretable Yield or Income Expected to be Collected (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Beginning balance	$ (190)	$ (297)
Accretion of income	499	255
Reclassifications from nonaccretable difference	$ (309)	(148)
Ending balance		$ (190)

Loans and Allowance for Loan And Lease Losses - Schedule of Components of Direct Financing Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Leases [Abstract]
Total minimum lease payments receivable	$ 2,567	$ 5,215
Less: Unearned income	(96)	(321)
Net leases	$ 2,471	$ 4,894

Loans and Allowance for Loan and Lease Losses - Summary of Future Minimum Lease Payments Receivable under Direct Financing Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Leases [Abstract]
2017	$ 1,877
2018	332
2019	303
2020	55
Future minimum lease payments receivable	$ 2,567	$ 5,215

Premises and Equipment - Summary of Premises and Equipment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property Plant And Equipment [Line Items]
Premises and equipment, gross	$ 8,766,000	$ 8,272,000
Less accumulated depreciation and amortization	(3,416,000)	(3,376,000)
Premises and equipment, net	$ 5,350,226	4,896,447
Minimum
Property Plant And Equipment [Line Items]
Premises and equipment, useful lives	3 years
Maximum
Property Plant And Equipment [Line Items]
Premises and equipment, useful lives	39 years
Buildings
Property Plant And Equipment [Line Items]
Premises and equipment, useful lives	39 years
Premises and equipment, gross	$ 3,586,000	3,586,000
Leasehold improvements
Property Plant And Equipment [Line Items]
Premises and equipment, gross	$ 1,171,000	1,174,000
Leasehold improvements \| Minimum
Property Plant And Equipment [Line Items]
Premises and equipment, useful lives	2 years
Leasehold improvements \| Maximum
Property Plant And Equipment [Line Items]
Premises and equipment, useful lives	10 years
Furniture and equipment
Property Plant And Equipment [Line Items]
Premises and equipment, gross	$ 2,055,000	2,332,000
Furniture and equipment \| Minimum
Property Plant And Equipment [Line Items]
Premises and equipment, useful lives	3 years
Furniture and equipment \| Maximum
Property Plant And Equipment [Line Items]
Premises and equipment, useful lives	7 years
Land
Property Plant And Equipment [Line Items]
Premises and equipment, gross	$ 1,180,000	$ 1,180,000
Leasehold improvements in process
Property Plant And Equipment [Line Items]
Premises and equipment, gross	$ 774,000

Premises and Equipment - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Line Items]
Depreciation and amortization	$ 422,478	$ 505,520	$ 625,040
Noncancelable lease arrangements
Property Plant And Equipment [Line Items]
Lease extension maturity period	2028
Rent expenses related to leases	$ 1,016,000	$ 1,018,000	$ 994,000

Premises and Equipment - Summary of Future Minimum Payments under Operating Leases (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Property Plant And Equipment [Abstract]
2017	$ 868
2018	1,179
2019	950
2020	951
2021	968
Thereafter	10,542
Total future minimum lease payments	$ 15,458

Goodwill And Intangible Assets - Summary of Acquired Intangible Assets (Details) - Core Deposit - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 287	$ 287
Accumulated Amortization	$ (216)	$ (162)

Goodwill And Intangible Assets - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]
Aggregate amortization expense	$ 54,000	$ 54,000	$ 54,000

Goodwill And Intangible Assets - Summary of Estimated Amortization Expense (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2017	$ 48
2018	$ 23

Other Real Estate Owned - Summary of Other Real Estate Owned Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Real Estate Roll Forward
Beginning balance	$ 216,254	$ 575,000
Transfer of loans to other real estate	0	0	$ 91,975
Direct write-downs	0	0
Sales of other real estate owned	(216,000)	(359,000)
End of year	$ 0	$ 216,254	$ 575,000

Other Real Estate Owned - Summary of Valuation Allowance Activity in Other Real Estate Owned (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Real Estate Owned Valuation Allowance Roll Forward
Beginning balance	$ 450	$ 450
Additions/(recoveries) charged/(credited) to expense	0	0
Reductions from sales of other real estate owned	(450)	0
Direct write-downs	0	0
End of year	$ 0	$ 450

Other Real Estate Owned - Summary of Expenses Related to Other Real Estate Owned (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Real Estate [Abstract]
Net (gain) loss on sale of other real estate owned	$ (157,184)	$ 3,506	$ 178,214
Provision for unrealized losses	0	0
Operating expenses, net of rental income	14,000	30,000
Total	$ (143,000)	$ 34,000

Deposits - Additional Information (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Deposits [Abstract]
Time deposits	$ 51,070,000	$ 84,248,000
Deposit accounts in overdraft status reclassified to loans	$ 41,000	$ 216,000

Deposits - Scheduled Maturities of Time Deposits (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Maturities Of Time Deposits [Abstract]
2017	$ 125,309,000
2018	29,542,000
2019	17,771,000
2020	7,926,000
2021	3,057,000
Thereafter	23,000
Total	$ 183,627,943	$ 220,683,113

Securities Sold Under Repurchase Agreements - Additional Information (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Securities Pledged as Collateral
Schedule Of Available For Sale Securities [Line Items]
Securities sold under repurchase agreements	$ 0	$ 3,724,000

Securities Sold Under Repurchase Agreements - Summary of Information Concerning Securities Sold Under Repurchase Agreements (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Investments Debt And Equity Securities [Abstract]
Average daily balance during the year	$ 526,000	$ 6,489,000
Average interest rate during the year	0.15%	0.23%
Maximum month-end balance during the year	$ 3,316,000	$ 15,862,000
Weighted average interest rate at year-end		0.25%

Federal Home Loan Bank Advances - Additional Information (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Federal Home Loan Bank Advances [Line Items]
Outstanding borrowings	$ 55,000,000	$ 45,000,000
Investment securities, FHLB stock and commercial and residential real estate mortgage loans
Federal Home Loan Bank Advances [Line Items]
Mortgage loans collateralized amount	211,500,000
Amount of available credit	$ 122,100,000

Federal Home Loan Bank Advances - Summary of Contractual Maturities and Average Effective Rates of Outstanding Advances (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Federal Home Loan Bank Advances Maturities Summary [Abstract]
2016		$ 45,000,000
2017	$ 55,000,000
Total	$ 55,000,000	$ 45,000,000
2016		0.57%
2017	0.80%
Total	0.80%	0.57%

Accumulated Other Comprehensive Income (Loss) - Summary of Changes In Accumulated Other Comprehensive Income (Loss) By Component, Net of Tax (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ 108,586,107	$ 102,651,373	$ 96,190,925
Other comprehensive income (loss) before reclassification	(951,000)	(1,988,000)
Amounts reclassified from accumulated other comprehensive income	(285,000)	(92,000)
Other comprehensive income (loss)	(1,236,171)	(2,080,991)	(27,680)
Ending balance	139,207,396	108,586,107	102,651,373
Gains and Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(3,704,000)	(2,139,000)
Other comprehensive income (loss) before reclassification	(279,000)	(1,542,000)
Amounts reclassified from accumulated other comprehensive income	(257,000)	(23,000)
Other comprehensive income (loss)	(536,000)	(1,565,000)
Ending balance	(4,240,000)	(3,704,000)	(2,139,000)
Unrealized Gains and Losses on Available for Sale Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	105,000	723,000
Other comprehensive income (loss) before reclassification	(878,000)	(652,000)
Amounts reclassified from accumulated other comprehensive income	75,000	34,000
Other comprehensive income (loss)	(803,000)	(618,000)
Ending balance	(698,000)	105,000	723,000
Unrealized Losses on Securities Transferred to Held to Maturity
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(1,315,000)	(1,418,000)
Other comprehensive income (loss) before reclassification	206,000	206,000
Amounts reclassified from accumulated other comprehensive income	(103,000)	(103,000)
Other comprehensive income (loss)	103,000	103,000
Ending balance	(1,212,000)	(1,315,000)	(1,418,000)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(4,914,380)	(2,833,389)	(2,805,709)
Other comprehensive income (loss)	(1,236,171)	(2,080,991)	(27,680)
Ending balance	$ (6,150,551)	$ (4,914,380)	$ (2,833,389)

Accumulated Other Comprehensive Income (Loss) - Summary of Significant Amounts Reclassified out off Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Net gain on sale of securities													$ 120,873	$ 55,023	$ 13,457
Interest expense - Federal Home Loan Bank advances													(475,308)	(179,866)	(162,000)
Income tax (expense) benefit	$ (1,495,445)	$ (1,042,282)	$ (1,159,438)	$ (796,245)	$ (989,615)	$ (831,307)	$ (990,000)	$ (658,924)	$ (233,961)	$ (1,128,460)	$ (509,403)	$ (540,562)	(4,493,410)	(3,469,847)	(2,412,386)
Net income	$ 2,927,460	$ 2,109,222	$ 2,476,252	$ 1,583,845	$ 2,092,968	$ 2,036,468	$ 1,861,310	$ 1,568,690	$ 690,942	$ 2,072,044	$ 1,038,782	$ 1,189,976	9,096,778	7,559,436	$ 4,991,744
Reclassification out of Accumulated Other Comprehensive Income \| Unrealized Losses on Cash Flow Hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Interest expense - money market													(151,000)	(37,000)
Interest expense - Federal Home Loan Bank advances													(265,000)
Income tax (expense) benefit													159,000	14,000
Net income													(257,000)	(23,000)
Reclassification out of Accumulated Other Comprehensive Income \| Unrealized Gains and Losses on Available for Sale Securities
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Net gain on sale of securities													121,000	55,000
Income tax (expense) benefit													(46,000)	(21,000)
Net income													75,000	34,000
Reclassification out of Accumulated Other Comprehensive Income \| Unrealized Losses on Securities Transferred to Held to Maturity
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Interest income - securities													(167,000)	(167,000)
Income tax (expense) benefit													64,000	64,000
Net income													$ (103,000)	$ (103,000)

Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($)	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal													$ 4,029,000	$ 2,794,000	$ 1,630,000
State													759,000	168,000	333,000
Total Current tax expense (Benefit)													4,788,000	2,962,000	1,963,000
Deferred:
Federal													(395,000)	314,000	373,000
State													100,000	194,000	76,000
Total deferred tax expense (Benefit)													(295,000)	508,000	449,000
Total	$ 1,495,445	$ 1,042,282	$ 1,159,438	$ 796,245	$ 989,615	$ 831,307	$ 990,000	$ 658,924	$ 233,961	$ 1,128,460	$ 509,403	$ 540,562	$ 4,493,410	$ 3,469,847	$ 2,412,386

Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Federal statutory income tax rate	34.00%	34.00%	34.00%
Unrecognized income tax benefits	$ 0	$ 0
Accrued interest related to uncertain tax positions	0	0
Accrued penalties related to uncertain tax positions	0	$ 0
Federal
Income Taxes [Line Items]
Federal net operating loss carryforwards	$ 4,513,000
Federal net operating loss carryforwards, start year	2029
Federal net operating loss carryforwards, end year	2032

Income Taxes - Schedule of Reconciliation of Actual Income Tax Expense (Details) - USD ($)	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Computed "expected" tax expense													$ 4,621,000	$ 3,750,000	$ 2,517,000
State income taxes, net of effect of federal income taxes													567,000	239,000	270,000
Tax-exempt interest income													(394,000)	(367,000)	(311,000)
Earnings on bank owned life insurance contracts													(204,000)	(213,000)	(223,000)
Disallowed expenses													60,000	71,000	62,000
Expiration of capital loss carryforward															98,000
Other													(157,000)	(10,000)	(1,000)
Total	$ 1,495,445	$ 1,042,282	$ 1,159,438	$ 796,245	$ 989,615	$ 831,307	$ 990,000	$ 658,924	$ 233,961	$ 1,128,460	$ 509,403	$ 540,562	$ 4,493,410	$ 3,469,847	$ 2,412,386

Income Taxes - Schedule of Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Allowance for loan and lease losses	$ 4,320	$ 3,787
Depreciation	326	341
Net operating loss carryforward	1,548	1,705
Organization and preopening costs	987	1,142
Stock-based compensation	1,071	941
Acquired loans	224	401
Acquired deposits	60	109
Nonaccrual interest	39	60
Write-downs of other real estate		171
Accrued incentive compensation	688	694
Reserve for contingencies	1,061	462
Accrued contributions	197	140
Unrealized loss on securities available for sale	1,493	995
Unrealized loss on securities held to maturity	752	816
Cash flow hedge	588	1,209
Accrued vacation	54	53
Other	51	74
Deferred tax assets	13,459	13,100
Deferred tax liabilities:
Prepaid expenses	133
Goodwill	343	204
Amortization of core deposit intangible	27	47
Deferred tax liabilities	503	251
Net deferred tax asset	$ 12,956	$ 12,849

Commitments and Contingencies - Schedule of Financial Instruments Representing Credit Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Unused commitments to extend credit	$ 508,990	$ 384,837
Standby letters of credit	10,886	13,450
Total	$ 519,876	$ 398,287

Concentration of Credit Risk - Additional Information (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Concentration Risk [Line Items]
Cash due from banks, federal funds sold and interest bearing deposits	$ 80,110,806	$ 100,184,841
Excess Of Insured Limits
Concentration Risk [Line Items]
Cash due from banks, federal funds sold and interest bearing deposits	$ 25,000,000	$ 14,000,000

Regulatory Matters And Restrictions On Dividends - Additional Information (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) Capital	Dec. 31, 2015 USD ($)
Banking And Thrift [Abstract]
Number of capital categories \| Capital	5
Dividends	$ 22,100,000	$ 19,000,000
Dividends paid	1,500,000
Dividends payments	$ 0	$ 0

Regulatory Matters And Restrictions On Dividends - Schedule of Capital Amounts and Ratios (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital to risk-weighted assets, actual amount		$ 116,047
Tier I capital to risk-weighted assets, actual amount		105,749
Tier I capital to average assets, actual amount		$ 105,749
Total capital to risk-weighted assets, actual ratio		11.40%
Tier I capital to risk-weighted assets, actual ratio		10.40%
Tier I capital to average assets, actual ratio		9.30%
Total capital to risk-weighted assets, minimum capital requirement amount		$ 81,224
Tier I capital to risk-weighted assets, minimum capital requirement amount		60,918
Tier I capital to average assets, minimum capital requirement amount		$ 45,328
Total capital to risk-weighted assets, minimum capital requirement ratio		8.00%
Tier I capital to risk-weighted assets, minimum capital requirement ratio		6.00%
Tier I capital to average assets, minimum capital requirement ratio		4.00%
Total capital to risk-weighted assets, minimum to be well capitalized amount		$ 101,530
Tier I capital to risk-weighted assets, minimum to be well capitalized amount		81,224
Tier I capital to average assets, minimum to be well capitalized amount		$ 56,660
Total capital to risk-weighted assets, minimum to be well capitalized ratio		10.00%
Tier I capital to risk-weighted assets, minimum to be well capitalized ratio		8.00%
Tier I capital to average assets, minimum to be well capitalized ratio		5.00%
Common Stock
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier I capital to risk-weighted assets, actual amount		$ 90,272
Tier I capital to risk-weighted assets, actual ratio		8.90%
Tier I capital to risk-weighted assets, minimum capital requirement amount		$ 45,688
Tier I capital to risk-weighted assets, minimum capital requirement ratio		4.50%
Tier I capital to risk-weighted assets, minimum to be well capitalized amount		$ 65,994
Tier I capital to risk-weighted assets, minimum to be well capitalized ratio		6.50%
CapStar Financial Holdings, Inc.
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital to risk-weighted assets, actual amount	$ 149,616
Tier I capital to risk-weighted assets, actual amount	137,909
Tier I capital to average assets, actual amount	$ 137,909
Total capital to risk-weighted assets, actual ratio	12.60%
Tier I capital to risk-weighted assets, actual ratio	11.60%
Tier I capital to average assets, actual ratio	10.50%
Total capital to risk-weighted assets, minimum capital requirement amount	$ 95,028
Tier I capital to risk-weighted assets, minimum capital requirement amount	71,271
Tier I capital to average assets, minimum capital requirement amount	$ 52,727
Total capital to risk-weighted assets, minimum capital requirement ratio	8.00%
Tier I capital to risk-weighted assets, minimum capital requirement ratio	6.00%
Tier I capital to average assets, minimum capital requirement ratio	4.00%
CapStar Financial Holdings, Inc. \| Common Stock
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier I capital to risk-weighted assets, actual amount	$ 129,528
Tier I capital to risk-weighted assets, actual ratio	10.90%
Tier I capital to risk-weighted assets, minimum capital requirement amount	$ 53,453
Tier I capital to risk-weighted assets, minimum capital requirement ratio	4.50%
CapStar Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital to risk-weighted assets, actual amount	$ 126,718
Tier I capital to risk-weighted assets, actual amount	115,011
Tier I capital to average assets, actual amount	$ 115,011
Total capital to risk-weighted assets, actual ratio	10.70%
Tier I capital to risk-weighted assets, actual ratio	9.70%
Tier I capital to average assets, actual ratio	8.70%
Total capital to risk-weighted assets, minimum capital requirement amount	$ 95,028
Tier I capital to risk-weighted assets, minimum capital requirement amount	71,271
Tier I capital to average assets, minimum capital requirement amount	$ 52,727
Total capital to risk-weighted assets, minimum capital requirement ratio	8.00%
Tier I capital to risk-weighted assets, minimum capital requirement ratio	6.00%
Tier I capital to average assets, minimum capital requirement ratio	4.00%
Total capital to risk-weighted assets, minimum to be well capitalized amount	$ 118,785
Tier I capital to risk-weighted assets, minimum to be well capitalized amount	95,028
Tier I capital to average assets, minimum to be well capitalized amount	$ 65,909
Total capital to risk-weighted assets, minimum to be well capitalized ratio	10.00%
Tier I capital to risk-weighted assets, minimum to be well capitalized ratio	8.00%
Tier I capital to average assets, minimum to be well capitalized ratio	5.00%
CapStar Bank \| Common Stock
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier I capital to risk-weighted assets, actual amount	$ 99,130
Tier I capital to risk-weighted assets, actual ratio	8.30%
Tier I capital to risk-weighted assets, minimum capital requirement amount	$ 53,453
Tier I capital to risk-weighted assets, minimum capital requirement ratio	4.50%
Tier I capital to risk-weighted assets, minimum to be well capitalized amount	$ 77,210
Tier I capital to risk-weighted assets, minimum to be well capitalized ratio	6.50%

Nonvoting and Series A Preferred Stock and Stock Warrants - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Jul. 14, 2008
Class Of Stock [Line Items]
Common stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	878,049	1,609,756
Expire period	10 years
Warrants grant date	Jul. 14, 2008
Warrants exercise on cashless basis	250,000
Warrants outstanding	250,000
Investor
Class Of Stock [Line Items]
Warrants issued to purchase common stock	238,319
Purchase price of share	$ 10.00
Expire period	10 years
Warrants grant date	Jul. 14, 2008
Warrants outstanding	211,819
Exercise of warrants	26,500
Share issuance descriptions	Each subscriber for shares who is a Tennessee resident or any entity controlled by a Tennessee resident and invested a minimum of $500,000 in the offering, received a warrant to purchase additional shares of common stock equal to 5% of accepted subscriptions at the purchase price of $10.00 per share.
Accepted percentage of subscription on purchase price	5.00%
Investor \| Minimum
Class Of Stock [Line Items]
Common stock subscription, value	$ 500,000,000
Director
Class Of Stock [Line Items]
Warrants issued to purchase common stock	10,000
Warrants purchase price	$ 10.00
Organizer
Class Of Stock [Line Items]
Warrants issued to purchase common stock	60,000
Expire period	10 years
Warrants grant date	Jul. 14, 2008
Warrants outstanding	60,000
Exercise of warrants	0
Common Stock
Class Of Stock [Line Items]
Exercise of warrants	100,023
Initial Public Offering \| Common Stock
Class Of Stock [Line Items]
Preferred shares converted to common stock	731,707
Nonvoting Common Stock
Class Of Stock [Line Items]
Common stock, shares authorized	5,000,000
Common stock, conversion basis	one-to-one basis
Warrants issued to purchase common stock			500,000
Purchase price of share			$ 10.25
Nonvoting Common Stock \| Initial Public Offering
Class Of Stock [Line Items]
Stock issued and converted to common stock	79,166
Series A Preferred Stock
Class Of Stock [Line Items]
Preferred stock, shares issued			1,609,756

Stock Options and Restricted Shares - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost	$ 1,515,000
Total fair value of shares vested	$ 513,000	$ 184,000
Vesting period	3 years
Contractual term	10 years
Expected dividend yield	0.00%
Unrecognized compensation cost	$ 139,000
Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cost expected to be recognized over a weighted-average period	2 years
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cost expected to be recognized over a weighted-average period	2 years 6 months
CapStar Bank 2008 Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of stock reserved for issuance of stock incentives	1,569,475
Shares issuable under both restricted stock and stock option grants	205,724

Stock Options and Restricted Shares - Summary of Company Recognized Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-based compensation expense before income taxes	$ 842	$ 438	$ 261
Less: deferred tax benefit	(279)	(138)	(85)
Reduction of net income	$ 563	$ 300	$ 176

Stock Options and Restricted Shares - Summary of Changes in Company's Nonvested Restricted Shares (Details)	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Restricted Shares, Abstract
Restricted Shares, Nonvested Beginning Balance \| shares	138,453
Restricted Shares, Granted \| shares	126,851
Restricted Shares, Vested \| shares	(40,596)
Restricted Shares, Forfeited \| shares	(25,067)
Restricted Shares, Nonvested Ending Balance \| shares	199,641
Weighted Average Grant Date Fair Value, Abstract
Weighted Average Grant Date Fair Value, Nonvested Beginning Balance \| $ / shares	$ 11.16
Weighted Average Grant Date Fair Value, Granted \| $ / shares	12.86
Weighted Average Grant Date Fair Value, Vested \| $ / shares	10.34
Weighted Average Grant Date Fair Value, Forfeited \| $ / shares	11.68
Weighted Average Grant Date Fair Value, Nonvested Ending Balance \| $ / shares	$ 12.34

Stock Options and Restricted Shares - Summary of Fair Value of Options Granted Using Weighted Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Expected dividend yield	0.00%
Expected term (in years)	7 years 5 months 23 days	7 years 3 months 15 days
Expected stock price volatility	17.20%	21.26%
Risk-free interest rate	1.66%	1.86%
Pre-vest forfeiture rate	10.25%	10.33%

Stock Options and Restricted Shares - Summary of Activity in Stock Options (Details)	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Shares, Abstract
Shares Outstanding, Beginning Balance \| shares	1,018,500
Shares Outstanding, Granted \| shares	32,500
Shares Outstanding, Exercised \| shares	(8,125)
Shares Outstanding, Forfeited or Expired \| shares	(36,875)
Shares Outstanding, Ending Balance \| shares	1,006,000
Shares, Fully Vested and Expected to Vest \| shares	996,803
Shares, Exercisable at End of Period \| shares	929,750
Weighted Average Exercise Price, Abstract
Weighted Average Exercise Price Outstanding, Beginning Balance \| $ / shares	$ 10.42
Weighted Average Exercise Price Outstanding, Granted \| $ / shares	13.22
Weighted Average Exercise Price Outstanding, Exercised \| $ / shares	11.85
Weighted Average Exercise Price Outstanding, Forfeited or expired \| $ / shares	11.05
Weighted Average Exercise Price Outstanding, Ending Balance \| $ / shares	10.48
Weighted Average Exercise Price, Fully vested and expected to vest \| $ / shares	10.46
Weighted Average Exercise Price, Exercisable at End of Period \| $ / shares	$ 10.35
Weighted Average Remaining Contractual Term (year), Abstract
Weighted Average Remaining Contractual Term Outstanding	3 years 1 month 6 days
Weighted Average Remaining Contractual Term, Fully Vested and Expected to Vest	3 years 1 month 6 days
Weighted Average Remaining Contractual Term, Exercisable at End of Period	2 years 8 months 12 days

Stock Options and Restricted Shares - Information Related to Stock Options (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Intrinsic value of options exercised	$ 53,756	$ 1,410
Cash received from option exercises	96,306	10,000
Tax benefit realized from option exercises	$ 20,583	$ 900
Weighted average fair value of options granted	$ 3.16	$ 3.20

Employee Benefit Plans- Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Compensation And Retirement Disclosure [Abstract]
Annual contribution percentage	3.00%
Additional discretionary contribution of employees' salary percentage	6.00%
Company's contribution to 401(k) Plan	$ 536,000	$ 469,000	$ 426,000

Derivative Instruments - Additional Information (Details) - Designated as Hedging Instrument - Interest Rate Swaps - Cash Flow Hedges - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments [Line Items]
Notional amounts	$ 20,000,000	$ 35,000,000
Interest income (expense)	0	$ 0
Investment securities pledged collateral to counterparties	2,391,000
Investment securities pledged collateral from counterparties	$ 0

Derivative Instruments - Summary of Interest-Rate Swaps Designated as Cash Flow Hedges (Details) - Designated as Hedging Instrument - Cash Flow Hedges - Interest Rate Swaps - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments [Line Items]
Notional amounts	$ 20,000,000	$ 35,000,000
Weighted average pay rates	3.54%	3.67%
Weighted average receive rates	Dec. 31, 2016: 3 month LIBOR and Dec. 31, 2015: 3 month LIBOR
Weighted average maturity	6 years 6 months	7 years 4 months 24 days
Fair value	$ (1,535,000)	$ (3,158,000)
Amount of unrealized loss recognized in accumulated other comprehensive income, net of tax	$ (947,000)	$ (1,949,000)

Derivative Instruments - Summary of Customer Related Interest Rate Swaps (Details) - Interest Rate Swaps - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments [Line Items]
Interest rate swap, Notional amount	$ 82,508,000	$ 91,350,000
Pay fixed/receive variable swaps
Derivative Instruments [Line Items]
Interest rate swap, Notional amount	41,254,000	45,675,000
Interest rate swap, Estimated fair value	460,000	(726,000)
Pay variable/receive fixed swaps
Derivative Instruments [Line Items]
Interest rate swap, Notional amount	41,254,000	45,675,000
Interest rate swap, Estimated fair value	$ (460,000)	$ 726,000

Related Party - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Related Party Transaction [Line Items]
Impairment of loans	$ 0	$ 0
Consulting services expense	1,553,680	1,469,031	$ 1,357,368
Directors Executive Officers, Shareholders and Affiliates
Related Party Transaction [Line Items]
Deposit from related parties	8,800,000	$ 12,700,000
Director
Related Party Transaction [Line Items]
Consulting services expense	30,000
Shareholder
Related Party Transaction [Line Items]
Payment to shareholder for lease of Bank’s branches	$ 95,000

Related Party - Schedule of Related Party Transactions Activity within Loans (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Total Commitment
Related Party Transaction [Line Items]
Beginning Balance	$ 27,501
New commitments/draw downs	4,805
Repayments	(1,230)
Ending Balance	31,076
Total Funded Commitment
Related Party Transaction [Line Items]
Beginning Balance	17,770
New commitments/draw downs	4,692
Repayments	(2,137)
Ending Balance	$ 20,325

Fair Value - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Assets:
Total securities available for sale	$ 182,354,987	$ 173,382,957
Obligations of States and Political Subdivisions
Assets:
Total securities available for sale	27,913,000	13,868,000
Asset-backed securities
Assets:
Total securities available for sale	20,473,000	21,593,000
Fair Value Measurements Recurring Basis
Assets:
Total securities available for sale	182,355,000	173,383,000
Liabilities:
Total derivatives	(1,994,000)	(3,884,000)
Fair Value Measurements Recurring Basis \| U.S. Government-sponsored Agencies
Assets:
Total securities available for sale	9,374,000	19,542,000
Fair Value Measurements Recurring Basis \| Obligations of States and Political Subdivisions
Assets:
Total securities available for sale	27,913,000	13,868,000
Fair Value Measurements Recurring Basis \| Mortgage-backed Securities-residential
Assets:
Total securities available for sale	124,595,000	118,380,000
Fair Value Measurements Recurring Basis \| Asset-backed securities
Assets:
Total securities available for sale	20,473,000	21,593,000
Fair Value Measurements Recurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Total securities available for sale		3,526,000
Fair Value Measurements Recurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Asset-backed securities
Assets:
Total securities available for sale		3,526,000
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2)
Assets:
Total securities available for sale	182,355,000	169,857,000
Liabilities:
Total derivatives	(1,994,000)	(3,884,000)
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2) \| U.S. Government-sponsored Agencies
Assets:
Total securities available for sale	9,374,000	19,542,000
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2) \| Obligations of States and Political Subdivisions
Assets:
Total securities available for sale	27,913,000	13,868,000
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2) \| Mortgage-backed Securities-residential
Assets:
Total securities available for sale	124,595,000	118,380,000
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2) \| Asset-backed securities
Assets:
Total securities available for sale	20,473,000	18,067,000
Fair Value Measurements Recurring Basis \| Interest Rate Swaps - Customer Related
Assets:
Interest rate swaps - customer related	460,000	726,000
Liabilities:
Total derivatives	(460,000)	(726,000)
Fair Value Measurements Recurring Basis \| Interest Rate Swaps - Customer Related \| Significant Other Observable Inputs (Level 2)
Assets:
Interest rate swaps - customer related	460,000	726,000
Liabilities:
Total derivatives	(460,000)	(726,000)
Fair Value Measurements Recurring Basis \| Interest Rate Swaps - Cash Flow Hedges
Liabilities:
Total derivatives	(1,535,000)	(3,158,000)
Fair Value Measurements Recurring Basis \| Interest Rate Swaps - Cash Flow Hedges \| Significant Other Observable Inputs (Level 2)
Liabilities:
Total derivatives	$ (1,535,000)	$ (3,158,000)

Fair Value - Summary of Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Commercial Real Estate
Assets:
Impaired loans		$ 1,383
Construction and land development
Assets:
Other real estate owned		216
Significant Unobservable Inputs (Level 3) \| Commercial Real Estate
Assets:
Impaired loans		1,383
Significant Unobservable Inputs (Level 3) \| Construction and land development
Assets:
Other real estate owned		$ 216
Commercial and industrial
Assets:
Impaired loans	$ 2,309
Commercial and industrial \| Significant Unobservable Inputs (Level 3)
Assets:
Impaired loans	$ 2,309

Fair Value - Summary of Quantitative Information About Level 3 Fair Value Measurements for Assets Measured at Fair Value on a Non-Recurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Commercial Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans		$ 1,383
Construction and land development
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other real estate owned		216
Commercial and industrial
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	$ 2,309
Level 3 Fair Value Measurements \| Commercial Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans		$ 1,383
Valuation Technique(s)	Dec. 31, 2015: Sales comparison approach
Unobservable Input(s)	Dec. 31, 2015: Appraisal discounts
Range (Weighted-Average)		20.00%
Level 3 Fair Value Measurements \| Construction and land development
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Valuation Technique(s)	Dec. 31, 2015: Sales comparison approach
Unobservable Input(s)	Dec. 31, 2015: Appraisal discounts
Range (Weighted-Average)		15.00%
Other real estate owned		$ 216
Level 3 Fair Value Measurements \| Commercial and industrial
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	$ 2,309
Valuation Technique(s)	Dec. 31, 2016: Sales comparison approach
Unobservable Input(s)	Dec. 31, 2016: Appraisal discounts
Range (Weighted-Average)	25.00%

Fair Value - Summary of Carrying Value and Fair Values of the Bank's Financial Instruments (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Financial assets:
Securities available for sale	$ 182,354,987	$ 173,382,957
Securities held to maturity, fair value	49,731,169	46,458,841
Carrying amount
Financial assets:
Cash and due from banks, interest-bearing deposits in financial institutions	63,456,000	93,455,000
Federal funds sold	16,654,000	6,730,000
Securities available for sale	182,355,000	173,383,000
Securities held to maturity, fair value	46,864,000	43,094,000
Loans held for sale	42,111,000	35,729,000
Restricted equity securities	6,032,000	5,414,000
Loans, net	935,251,000	798,264,000
Accrued interest receivable	3,942,000	3,030,000
Bank owned life insurance	21,900,000	21,299,000
Other assets	460,000	726,000
Financial liabilities:
Deposits	1,128,722,000	1,038,460,000
Securities sold under repurchase agreements		3,755,000
Federal Home Loan Bank advances	55,000,000	45,000,000
Accrued interest payable	212,000	177,000
Other liabilities	5,349,000	6,536,000
Fair value
Financial assets:
Cash and due from banks, interest-bearing deposits in financial institutions	63,456,000	93,455,000
Federal funds sold	16,654,000	6,730,000
Securities available for sale	182,355,000	173,383,000
Securities held to maturity, fair value	49,731,000	46,459,000
Loans held for sale	42,302,000	36,552,000
Loans, net	934,628,000	806,030,000
Accrued interest receivable	3,942,000	3,030,000
Bank owned life insurance	21,900,000	21,299,000
Other assets	460,000	726,000
Financial liabilities:
Deposits	1,088,758,000	1,035,978,000
Securities sold under repurchase agreements		3,755,000
Federal Home Loan Bank advances	54,989,000	44,926,000
Accrued interest payable	212,000	177,000
Other liabilities	$ 5,349,000	$ 6,536,000

Parent Company Only Financial Information - Condensed Balance Sheet (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 80,110,806	$ 100,184,841	$ 73,934,337	$ 44,793,388
Total assets	1,333,675,063	1,206,800,279
Liabilities and Shareholders’ Equity
Other liabilities	10,533,836	10,822,322
Total shareholders’ equity	139,207,396	108,586,107	$ 102,651,373	$ 96,190,925
Total liabilities and shareholders’ equity	1,333,675,063	$ 1,206,800,279
CapStar Financial Holdings, Inc.
Assets
Cash and cash equivalents	22,952,354,000
Investment in consolidated subsidiary	116,309,922,000
Total assets	139,262,276,000
Liabilities and Shareholders’ Equity
Other liabilities	54,880,000
Total shareholders’ equity	139,207,396,000
Total liabilities and shareholders’ equity	$ 139,262,276,000

Parent Company Only Financial Information - Condensed Income Statement (Details) - USD ($)	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income tax benefit	$ 1,495,445	$ 1,042,282	$ 1,159,438	$ 796,245	$ 989,615	$ 831,307	$ 990,000	$ 658,924	$ 233,961	$ 1,128,460	$ 509,403	$ 540,562	$ 4,493,410	$ 3,469,847	$ 2,412,386
Net income	$ 2,927,460	$ 2,109,222	$ 2,476,252	$ 1,583,845	$ 2,092,968	$ 2,036,468	$ 1,861,310	$ 1,568,690	$ 690,942	$ 2,072,044	$ 1,038,782	$ 1,189,976	9,096,778	$ 7,559,436	$ 4,991,744
CapStar Financial Holdings, Inc.
Income - dividends from subsidiary													1,500,000,000
Expenses													741,691,000
Income before income taxes and equity in undistributed net income of subsidiary													758,309,000
Income tax benefit													(258,528,000)
Income before equity in undistributed net income of subsidiary													1,016,837,000
Equity in undistributed net income of subsidiary													7,366,019,000
Net income													$ 8,382,856,000

Parent Company Only Financial Information - Condensed Statement of Cash Flows (Details) - USD ($)	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 2,927,460	$ 2,109,222	$ 2,476,252	$ 1,583,845	$ 2,092,968	$ 2,036,468	$ 1,861,310	$ 1,568,690	$ 690,942	$ 2,072,044	$ 1,038,782	$ 1,189,976	$ 9,096,778	$ 7,559,436	$ 4,991,744
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Excess tax benefit from stock compensation													(61,217)	(8,286)	(12,349)
Net cash provided by (used in) operating activities													6,267,098	(9,348,029)	(6,983,450)
Cash flows from financing activities:
Issuance of common stock													21,562,716
Exercise of common stock options and warrants, net of repurchase of restricted shares													294,298	10,000	75,000
Excess tax benefit from stock compensation													61,217	8,286	12,349
Net cash provided by financing activities													116,471,174	69,546,938	107,322,179
Net increase (decrease) in cash and cash equivalents													(20,074,035)	26,250,504	29,140,949
Cash and cash equivalents at beginning of period				$ 100,184,841				$ 73,934,337				$ 44,793,388	100,184,841	73,934,337	44,793,388
Cash and cash equivalents at end of period	80,110,806				$ 100,184,841				$ 73,934,337				80,110,806	$ 100,184,841	$ 73,934,337
CapStar Financial Holdings, Inc.
Cash flows from operating activities:
Net income													8,382,856,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Increase in other liabilities													54,880,000
Excess tax benefit from stock compensation													(61,217,000)
Equity in undistributed net income of subsidiary													(7,366,019,000)
Net cash provided by (used in) operating activities													1,010,500,000
Cash flows from financing activities:
Issuance of common stock													21,562,716,000
Exercise of common stock options and warrants, net of repurchase of restricted shares													317,921,000
Excess tax benefit from stock compensation													61,217,000
Net cash provided by financing activities													21,941,854,000
Net increase (decrease) in cash and cash equivalents													22,952,354,000
Cash and cash equivalents at end of period	$ 22,952,354,000												$ 22,952,354,000

Quarterly Financial Results (Unaudited) - Summary of Quarterly Financial Results (Unaudited) (Details) - USD ($)	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 12,007,234	$ 11,874,605	$ 10,914,739	$ 10,598,178	$ 10,271,373	$ 10,802,646	$ 9,809,759	$ 9,619,954	$ 10,295,115	$ 9,478,772	$ 9,308,583	$ 9,204,274	$ 45,394,756	$ 40,503,733	$ 38,286,744
Interest expense	1,826,961	1,749,090	1,713,584	1,641,903	1,433,927	1,385,632	1,460,851	1,450,101	1,502,095	1,462,025	1,414,085	1,492,690	6,931,536	5,730,512	5,870,896
Net interest income	10,180,273	10,125,515	9,201,155	8,956,275	8,837,446	9,417,015	8,348,908	8,169,853	8,793,020	8,016,747	7,894,498	7,711,584	38,463,220	34,773,221	32,415,848
Provision for loan and lease losses	69,884	1,638,669	182,863	937,216	350,000	580,000	585,000	135,675	3,168,986	0	586,500	113,369	2,828,633	1,650,675	3,868,855
Net interest income after provision for loan and lease losses	10,110,389	8,486,845	9,018,292	8,019,059	8,487,446	8,837,015	7,763,908	8,034,178	5,624,034	8,016,747	7,307,998	7,598,215	35,634,587	33,122,546	28,546,993
Noninterest income	2,954,021	3,191,463	2,568,192	2,370,772	1,918,157	2,634,659	2,418,890	1,911,804	1,878,269	2,557,692	1,873,777	1,109,505	11,084,449	8,883,510	7,419,242
Noninterest expense	8,641,506	8,526,805	7,950,794	8,009,741	7,323,020	8,603,899	7,331,488	7,718,367	6,577,399	7,373,935	7,633,590	6,977,181	33,128,848	30,976,773	28,562,105
Income before income taxes	4,422,904	3,151,504	3,635,690	2,380,090	3,082,583	2,867,774	2,851,311	2,227,615	924,903	3,200,504	1,548,185	1,730,539	13,590,188	11,029,283	7,404,130
Income tax expense	1,495,445	1,042,282	1,159,438	796,245	989,615	831,307	990,000	658,924	233,961	1,128,460	509,403	540,562	4,493,410	3,469,847	2,412,386
Net income	$ 2,927,460	$ 2,109,222	$ 2,476,252	$ 1,583,845	$ 2,092,968	$ 2,036,468	$ 1,861,310	$ 1,568,690	$ 690,942	$ 2,072,044	$ 1,038,782	$ 1,189,976	$ 9,096,778	$ 7,559,436	$ 4,991,744
Net income per share, basic	$ 0.26	$ 0.24	$ 0.29	$ 0.18	$ 0.24	$ 0.24	$ 0.22	$ 0.18	$ 0.08	$ 0.24	$ 0.12	$ 0.14	$ 0.98	$ 0.89	$ 0.59
Net income per share, diluted	$ 0.23	$ 0.20	$ 0.23	$ 0.15	$ 0.20	$ 0.20	$ 0.18	$ 0.15	$ 0.07	$ 0.20	$ 0.10	$ 0.12	$ 0.81	$ 0.73	$ 0.49

Shareholders' Agreement	12 Months Ended
Shareholders' Agreement	Dec. 31, 2016
Equity [Abstract]
Shareholders’ Agreement	NOTE 17 – SHAREHOLDERS’ AGREEMENT In June 2008, the Company entered into a shareholders’ agreement (the Shareholders’ Agreement) with certain investors (the Investors). Among other things, the Shareholders’ Agreement permits the Investors to nominate an individual for election to the board of directors and certain tag-along rights.

Employment Contracts	12 Months Ended
Employment Contracts	Dec. 31, 2016
Employment Contracts Disclosure [Abstract]
Employment Contracts	NOTE 19 – EMPLOYMENT CONTRACTS The Company has entered into employment contracts with certain senior executives with various expiration dates. Each of the contracts has an option for annual renewal by mutual agreement. The agreements specify that in certain terminating events the Company will be obligated to provide certain benefits and pay each of the senior executives severance based on their annual salaries and bonuses. These terminating events include termination of employment without “Cause” (as defined in the agreements) or in certain other circumstances specified in the agreements.

Shareholders' Agreement - Additional Information (Details)	12 Months Ended
	Dec. 31, 2016
Share Based Compensation [Abstract]
Shareholders' agreement date	2008-06