CapStar Financial (CSTR) 10-Q 31 Jul 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 28, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Trading Symbol	CSTR
Entity Registrant Name	CAPSTAR FINANCIAL HOLDINGS, INC.
Entity Central Index Key	1,676,479
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		11,241,619

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 6,508	$ 9,134
Interest-bearing deposits in financial institutions	41,585	54,323
Federal funds sold		16,654
Total cash and cash equivalents	48,093	80,111
Securities available-for-sale, at fair value	155,663	182,355
Securities held-to-maturity, fair value of $49,902, and $49,731 at June 30, 2017 and December 31, 2016, respectively	46,458	46,864
Loans held for sale	73,573	42,111
Loans and leases	996,617	935,251
Less allowance for loan and lease losses	(12,454)	(11,634)
Loans and leases, net	984,163	923,617
Premises and equipment, net	6,066	5,350
Restricted equity securities	8,292	6,032
Accrued interest receivable	3,571	3,942
Goodwill	6,219	6,219
Core deposit intangible	44	71
Deferred tax assets	11,886	12,956
Bank owned life insurance	22,189	21,900
Other assets	5,409	2,147
Total assets	1,371,626	1,333,675
Deposits:
Non-interest-bearing	231,169	197,788
Interest-bearing	321,153	299,621
Savings and money market accounts	376,130	447,686
Time	192,533	183,628
Total deposits	1,120,985	1,128,723
Federal Home Loan Bank advances	105,000	55,000
Accrued interest payable	286	212
Other liabilities	7,325	10,533
Total liabilities	1,233,596	1,194,468
Shareholders’ equity:
Series A convertible preferred stock, $1 par value; 5,000,000 shares authorized; 878,049 shares issued and outstanding at June 30, 2017 and December 31, 2016	878	878
Common stock, voting, $1 par value; 20,000,000 shares authorized; 11,235,255 and 11,204,515 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively	11,235	11,205
Additional paid-in capital	116,556	116,143
Retained earnings	14,122	17,132
Accumulated other comprehensive loss, net of income tax	(4,761)	(6,151)
Total shareholders’ equity	138,030	139,207
Total liabilities and shareholders’ equity	$ 1,371,626	$ 1,333,675

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Securities held to maturity, fair value	$ 49,902	$ 49,731
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	878,049	878,049
Preferred stock, shares outstanding	878,049	878,049
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	11,235,255	11,204,515
Common stock, shares outstanding	11,235,255	11,204,515

Consolidated Statements of Inco

Consolidated Statements of Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest income:
Loans, including fees	$ 11,373	$ 9,605	$ 21,840	$ 18,873
Securities:
Taxable	983	911	1,987	1,810
Tax-exempt	317	268	642	549
Federal funds sold	16	4	18	9
Restricted equity securities	86	70	163	139
Interest-bearing deposits in financial institutions	115	56	219	133
Total interest income	12,890	10,914	24,869	21,513
Interest expense:
Interest-bearing deposits	586	390	1,204	692
Savings and money market accounts	773	719	1,587	1,451
Time deposits	574	506	1,046	1,020
Federal funds purchased	7	6	11	8
Securities sold under agreements to repurchase				1
Federal Home Loan Bank advances	379	92	519	183
Total interest expense	2,319	1,713	4,367	3,355
Net interest income	10,571	9,201	20,502	18,158
Provision for loan losses	9,690	183	13,094	1,120
Net interest income after provision for loan losses	881	9,018	7,408	17,038
Noninterest income:
Service charges on deposit accounts	342	303	670	529
Loan commitment fees	187	142	423	572
Net gain on sale of securities	40	86	34	125
Tri-Net fees	297		382
Mortgage banking income	1,370	1,655	2,587	3,002
Other noninterest income	430	382	703	711
Total noninterest income	2,666	2,568	4,799	4,939
Noninterest expense:
Salaries and employee benefits	4,784	4,938	9,870	10,156
Data processing and software	711	635	1,331	1,203
Professional fees	350	426	714	757
Occupancy	539	371	987	781
Equipment	544	436	1,040	843
Regulatory fees	301	265	608	492
Other operating	988	880	2,042	1,729
Total noninterest expense	8,217	7,951	16,592	15,961
Income (loss) before income taxes	(4,670)	3,635	(4,385)	6,016
Income tax expense (benefit)	(1,328)	1,159	(1,375)	1,956
Net income (loss)	$ (3,342)	$ 2,476	$ (3,010)	$ 4,060
Per share information:
Basic net income (loss) per share of common stock	$ (0.30)	$ 0.29	$ (0.27)	$ 0.47
Diluted net income (loss) per share of common stock	$ (0.26)	$ 0.23	$ (0.24)	$ 0.38
Weighted average shares outstanding:
Basic	11,226,216	8,682,438	11,218,624	8,655,561
Diluted	12,740,104	10,675,916	12,761,989	10,624,004

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (3,342)	$ 2,476	$ (3,010)	$ 4,060
Unrealized gains on securities available-for-sale:
Unrealized holding gains arising during the period	1,333	1,435	1,908	3,573
Reclassification adjustment for gains included in net income	(40)	(86)	(34)	(125)
Tax effect	(495)	(517)	(717)	(1,320)
Net of tax	798	832	1,157	2,128
Unrealized losses on securities transferred to held-to-maturity:
Reclassification adjustment for losses included in net income	42	42	83	83
Tax effect	(16)	(16)	(32)	(32)
Net of tax	26	26	51	51
Unrealized gains (losses) on cash flow hedges:
Unrealized holding losses arising during the period	(211)	(344)	(213)	(1,846)
Reclassification adjustment for losses included in net income	158	87	313	173
Tax effect	81	132	82	707
Net of tax	28	(125)	182	(966)
Other comprehensive income	852	733	1,390	1,213
Comprehensive income (loss)	$ (2,490)	$ 3,209	$ (1,620)	$ 5,273

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2015	$ 108,586	$ 1,610	$ 8,577	$ 95,277	$ 8,036	$ (4,914)
Beginning balance, shares at Dec. 31, 2015			8,577,051
Issuance of restricted common stock, net of forfeitures and withholdings to satisfy employee tax obligations			$ 106	(106)
Issuance of restricted common stock, net of forfeitures and withholdings to satisfy employee tax obligations, shares			105,851
Stock-based compensation expense	431			431
Excess tax benefit from stock compensation	18			18
Exercise of common stock warrants	10		$ 1	9
Exercise of common stock warrants, shares			1,000
Net income (loss)	4,060				4,060
Other comprehensive income	1,213					1,213
Ending balance at Jun. 30, 2016	114,318	1,610	$ 8,684	95,629	12,096	(3,701)
Ending balance, shares at Jun. 30, 2016			8,683,902
Beginning balance at Dec. 31, 2016	139,207	878	$ 11,205	116,143	17,132	(6,151)
Beginning balance, shares at Dec. 31, 2016			11,204,515
Issuance of restricted common stock, net of forfeitures and withholdings to satisfy employee tax obligations	(211)		$ 4	(215)
Issuance of restricted common stock, net of forfeitures and withholdings to satisfy employee tax obligations, shares			4,244
Stock-based compensation expense	484			484
Exercise of employee common stock options	$ 80		$ 15	65
Exercise of employee common stock options, shares	25,750		15,117
Exercise of common stock warrants	$ 90		$ 11	79
Exercise of common stock warrants, shares			11,379
Net income (loss)	(3,010)				(3,010)
Other comprehensive income	1,390					1,390
Ending balance at Jun. 30, 2017	$ 138,030	$ 878	$ 11,235	$ 116,556	$ 14,122	$ (4,761)
Ending balance, shares at Jun. 30, 2017			11,235,255

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income (loss)	$ (3,010,000)	$ 4,060,000
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Provision for loan and lease losses	13,094,000	1,120,000
Accretion of discounts on acquired loans and deferred fees	(274,000)	(751,000)
Depreciation and amortization	232,000	223,000
Net amortization of premiums on investment securities	663,000	680,000
Securities gains, net	(34,000)	(125,000)
Mortgage banking income	(2,587,000)	(3,002,000)
Tri-Net fees	(382,000)
Net gain on sale of loans	(66,000)
Net loss on disposal of premises and equipment	137,000
Net gain on sale of other real estate owned		(157,000)
Stock-based compensation	484,000	431,000
Excess tax benefit from stock compensation		(18,000)
Deferred income tax expense	402,000	510,000
Origination of loans held for sale	(267,954,000)	(236,915,000)
Proceeds from loans held for sale	239,527,000	215,809,000
Net increase in accrued interest receivable and other assets	(3,107,000)	(2,004,000)
Net increase in accrued interest payable and other liabilities	(3,108,000)	(878,000)
Net cash used in operating activities	(25,983,000)	(21,017,000)
Activities in securities available for sale:
Purchases	(11,754,000)	(39,528,000)
Sales	29,968,000	34,139,000
Maturities, prepayments and calls	9,762,000	10,369,000
Activities in securities held to maturity:
Maturities, prepayments and calls	451,000	806,000
Purchase of restricted equity securities	(2,260,000)	(104,000)
Net increase in loans	(73,366,000)	(83,746,000)
Purchase of premises and equipment	(1,060,000)	(44,000)
Proceeds from the sale of premises and equipment	3,000
Proceeds from sale of other real estate		373,000
Net cash used in investing activities	(48,256,000)	(77,735,000)
Cash flows from financing activities:
Net (decrease) increase in deposits	(7,738,000)	104,840,000
Proceeds from Federal Home Loan Bank advances	60,000,000
Payments on Federal Home Loan Bank advances	(10,000,000)	(5,000,000)
Exercise of common stock options and warrants, net of repurchase of restricted shares	(41,000)	10,000
Excess tax benefit from stock compensation		18,000
Net decrease in repurchase agreements		(3,755,000)
Net cash provided by financing activities	42,221,000	96,113,000
Net decrease in cash and cash equivalents	(32,018,000)	(2,639,000)
Cash and cash equivalents at beginning of period	80,111,000	100,185,000
Cash and cash equivalents at end of period	48,093,000	97,546,000
Supplemental disclosures of cash paid:
Interest paid	4,293,000	3,333,000
Income taxes	2,813,000	2,514,000
Supplemental disclosures of noncash transactions:
Loans charged off to the allowance for loan losses	$ 12,369,000	$ 807,000

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying unaudited consolidated financial statements as of and for the period ended June 30, 2017 include CapStar Financial Holdings, Inc. and its wholly owned subsidiary, CapStar Bank (the “Bank”, together referred to as the “Company”). Significant intercompany transactions and accounts are eliminated in consolidation. 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 accompanying unaudited consolidated financial statements have been prepared in accordance with instructions to Form 10-Q and do not include all information and footnotes required by U.S. generally accepted accounting principles (“U.S. GAAP”) for complete financial statements. All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. These unaudited consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and related notes appearing in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. 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 $21.9 million from the offering, after deducting the underwriting discounts and commissions and estimated offering expenses. We did not receive any proceeds from the sale of shares by the selling shareholders. Use of Estimates The preparation of financial statements in conformity with U.S. 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 losses, determination of impairment of intangible assets, including goodwill, the valuation of our investment portfolio, deferred tax assets and estimated liabilities. There have been no significant changes to the Company’s critical accounting policies as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. Tri-Net Fees Tri-Net fees represent a new line of business, implemented in the fourth quarter of 2016, which originates, with the intent to sell, commercial real estate loans to third-party investors. All of these loan sales transfer servicing rights to the buyer. 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 Tri-Net fees, net of related costs such as commission expenses. Loans that have not been sold at period end are classified as held for sale on the balance sheet and recorded at the lower of aggregate cost or fair value. Net unrealized losses, if any, are recorded as a valuation allowance and charged to earnings. Subsequent Events Accounting Standards Codification (“ASC”) 855, Subsequent Events, establishes general standards of accounting for and disclosure of events that occur after the balance sheet date but before financial statements are issued. The Company evaluated all events or transactions that occurred after June 30, 2017 through the date of the issued financial statements.

Securities

Securities	6 Months Ended
	Jun. 30, 2017
Investments Debt And Equity Securities [Abstract]
Securities	NOTE 2 – SECURITIES The amortized cost and fair value of securities available-for-sale and held-to-maturity at June 30, 2017 and December 31, 2016 are summarized as follows (dollars in thousands): June 30, 2017 December 31, 2016 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 $ 11,531 $ 5 $ (165 ) $ 11,371 $ 9,517 $ — $ (143 ) $ 9,374 State and municipal securities 20,882 200 (191 ) 20,891 28,480 65 (632 ) 27,913 Mortgage-backed securities 104,274 23 (1,490 ) 102,807 126,637 17 (2,059 ) 124,595 Asset-backed securities 21,001 — (407 ) 20,594 21,620 — (1,147 ) 20,473 Total $ 157,688 $ 228 $ (2,253 ) $ 155,663 $ 186,254 $ 82 $ (3,981 ) $ 182,355 Securities held-to-maturity: State and municipal securities $ 36,886 $ 3,284 $ — $ 40,170 $ 36,842 $ 2,784 $ — $ 39,626 Mortgage-backed securities 4,241 69 — 4,310 4,687 79 — 4,766 Other debt securities 5,331 91 — 5,422 5,335 11 (7 ) 5,339 Total $ 46,458 $ 3,444 $ — $ 49,902 $ 46,864 $ 2,874 $ (7 ) $ 49,731 Security fair values are established by an independent pricing service as of the dates indicated. The difference between amortized cost and fair value reflects current interest rates and represents the potential gain (loss) had the portfolio been liquidated on those dates. Security gains (losses) are realized only in the event of dispositions prior to maturity or other-than-temporary impairment. Securities with unrealized losses as of June 30, 2017 and December 31, 2016, and the length of time they were in continuous loss positions as of such dates are as follows (in thousands): Less than 12 months 12 months or more Total June 30, 2017 Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses U. S. government agency securities $ 9,349 $ (165 ) $ — $ — $ 9,349 $ (165 ) State and municipal securities 10,581 (187 ) 449 (4 ) 11,030 (191 ) Mortgage-backed securities 90,127 (1,364 ) 8,147 (126 ) 98,274 (1,490 ) Asset-backed securities — — 20,594 (407 ) 20,594 (407 ) Total temporarily impaired securities $ 110,057 $ (1,716 ) $ 29,190 $ (537 ) $ 139,247 $ (2,253 ) December 31, 2016 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 ) As noted in the table above, as of June 30, 2017, the Company had unrealized losses of $2.3 million in its investment securities portfolio. The unrealized losses associated with these investment securities are driven by changes in interest rates and are recorded as a component of equity. These investment securities will continue to be monitored as a part of our ongoing impairment analysis. Management evaluates the financial performance of the issuers on a quarterly basis to determine if it is probable that the issuers can make all contractual principal and interest payments. If a shortfall in future cash flows is identified, a credit loss will be deemed to have occurred and will be recognized as a charge to earnings and a new cost basis for the security will be established. Because the Company currently does not intend to sell any investment securities that have an unrealized loss at June 30, 2017, and it is not more-likely-than-not that we will be required to sell these investment securities before recovery of their amortized cost bases, which may be at maturity, we do not consider these securities to be other-than-temporarily impaired at June 30, 2017. Securities with a carrying value of $137.6 million at June 30, 2017 were pledged to collateralize public deposits, derivative positions and Federal Home Loan Bank advances. The proceeds from sales and calls of securities and the associated gains and losses are listed below (dollars in thousands): Six Months Ended Six Months Ended June 30, 2017 June 20, 2016 Proceeds $ 40,181 $ 45,314 Gross gains 91 238 Gross losses (57 ) (113 ) The amortized cost and fair value of securities at June 30, 2017, by contractual maturity, are shown below (dollars 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 $ 12,103 $ 12,267 $ 27,504 $ 29,563 Due five to ten years 18,073 17,835 12,243 13,289 Due beyond ten years 2,237 2,160 2,470 2,740 Mortgage-backed securities 104,274 102,807 4,241 4,310 Asset-backed securities 21,001 20,594 — — $ 157,688 $ 155,663 $ 46,458 $ 49,902

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Loans and Allowance for Loan Losses	NOTE 3 – LOANS AND ALLLOWANCE FOR LOAN LOSSES A summary of the loan portfolio as of June 30, 2017 and December 31, 2016 follows (dollars in thousands): June 30, 2017 December 31, 2016 Commercial real estate $ 385,758 $ 302,322 Consumer real estate 99,751 97,015 Construction and land development 62,152 94,491 Commercial and industrial 406,636 379,620 Consumer 4,096 5,974 Other 38,783 56,796 Total 997,176 936,218 Less net unearned income (559 ) (967 ) 996,617 935,251 Allowance for loan losses (12,454 ) (11,634 ) $ 984,163 $ 923,617 The adequacy of the allowance for loan losses (ALL) is assessed at the end of each quarter. The ALL includes a specific component related to loans that are individually evaluated for impairment and a general component related to loans that are segregated into homogenous pools and collectively evaluated for impairment. The ALL factors applied to these pools are an estimate of probable incurred losses based on management’s evaluation of historical net losses from loans with similar characteristics, which are adjusted by management to reflect current events, trends, and conditions. The adjustments 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. 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 tables present the loan balances by category as well as risk rating (dollars in thousands): Performing Loans June 30, 2017 Pass/Watch Special Mention Substandard Total Performing Total Loans Total Commercial real estate $ 384,498 $ — $ — $ 384,498 $ 1,260 $ 385,758 Consumer real estate 99,461 — 290 99,751 — 99,751 Construction and land development 62,152 — — 62,152 — 62,152 Commercial and industrial 381,333 17,841 5,493 404,667 1,969 406,636 Consumer 4,081 — 15 4,096 — 4,096 Other 38,783 — — 38,783 — 38,783 Total $ 970,308 $ 17,841 $ 5,798 $ 993,947 $ 3,229 $ 997,176 December 31, 2016 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 None of the Company’s loans had a risk rating of “Doubtful” as of June 30, 2017 or December 31, 2016. The following tables detail the changes in the ALL for the three and six months ended June 30, 2017 and 2016 (in thousands): Commercial real estate Consumer real estate Construction and land development Commercial and industrial Consumer Other Total Three Months Ended June 30, 2017 Balance, beginning of period $ 3,257 $ 1,048 $ 1,090 $ 8,013 $ 60 $ 529 $ 13,997 Charged-off loans — — — (11,244 ) — — (11,244 ) Recoveries — 1 — — 10 — 11 Provision for loan losses 276 32 (179 ) 9,626 (13 ) (52 ) 9,690 Balance, end of period $ 3,533 $ 1,081 $ 911 $ 6,395 $ 57 $ 477 $ 12,454 Three Months Ended June 30, 2016 Balance, beginning of period $ 2,970 $ 963 $ 799 $ 4,924 $ 113 $ 530 $ 10,299 Charged-off loans — — (11 ) (22 ) — (33 ) Recoveries — — — 4 1 — 5 Provision for loan losses (374 ) 5 144 120 12 276 183 Balance, end of period $ 2,596 $ 968 $ 943 $ 5,037 $ 104 $ 806 $ 10,454 Commercial real estate Consumer real estate Construction and land development Commercial and industrial Consumer Other Total Six Months Ended June 30, 2017 Balance, beginning of period $ 2,655 $ 1,013 $ 1,574 $ 5,618 $ 76 $ 698 $ 11,634 Charged-off loans — — — (12,369 ) — — (12,369 ) Recoveries — 1 — 3 91 — 95 Provision for loan losses 878 67 (663 ) 13,143 (110 ) (221 ) 13,094 Balance, end of period $ 3,533 $ 1,081 $ 911 $ 6,395 $ 57 $ 477 $ 12,454 Six Months Ended June 30, 2016 Balance, beginning of period $ 2,879 $ 968 $ 914 $ 4,693 $ 103 $ 575 $ 10,132 Charged-off loans (350 ) — — (311 ) (146 ) — (807 ) Recoveries — — — 8 1 — 9 Provision for loan losses 67 — 29 647 146 231 1,120 Balance, end of period $ 2,596 $ 968 $ 943 $ 5,037 $ 104 $ 806 $ 10,454 A breakdown of the ALL and the loan portfolio by loan category at June 30, 2017 and December 31, 2016 follows (dollars in thousands): Commercial real estate Consumer real estate Construction and land development Commercial and industrial Consumer Other Total June 30, 2017 Allowance for Loan Losses: Collectively evaluated for impairment $ 3,533 $ 1,081 $ 911 $ 5,895 $ 57 $ 477 $ 11,954 Individually evaluated for impairment — — — 500 — — 500 Balances, end of period $ 3,533 $ 1,081 $ 911 $ 6,395 $ 57 $ 477 $ 12,454 Loans: Collectively evaluated for impairment $ 384,498 $ 99,751 $ 62,152 $ 404,667 $ 4,096 $ 38,783 $ 993,947 Individually evaluated for impairment 1,260 — — 1,969 — — 3,229 Balances, end of period $ 385,758 $ 99,751 $ 62,152 $ 406,636 $ 4,096 $ 38,783 $ 997,176 December 31, 2016 Allowance for Loan Losses: Collectively evaluated for impairment $ 2,655 $ 1,013 $ 1,574 $ 5,118 $ 76 $ 698 $ 11,134 Individually evaluated for impairment — — — 500 — — 500 Balances, end of period $ 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 Balances, end of period $ 302,322 $ 97,015 $ 94,491 $ 379,620 $ 5,974 $ 56,796 $ 936,218 The following table presents the allocation of the ALL for each respective loan category with the corresponding percentage of the ALL in each category to total loans, net of deferred fees as of June 30, 2017 and December 31, 2016 (dollars in thousands): June 30, 2017 December 31, 2016 Amount Percent of total loans, net of deferred fees Amount Percent of total loans, net of deferred fees Commercial real estate $ 3,533 0.35 % $ 2,655 0.28 % Consumer real estate 1,081 0.11 1,013 0.11 Construction and land development 911 0.09 1,574 0.17 Commercial and industrial 6,395 0.64 5,618 0.60 Consumer 57 0.01 76 0.01 Other 477 0.05 698 0.07 Total allowance for loan losses $ 12,454 1.25 % $ 11,634 1.24 % The following table presents the Company’s impaired loans that were evaluated for specific loss allowance as of June 30, 2017 and December 31, 2016 (dollars in thousands): June 30, 2017 December 31, 2016 Recorded investment Unpaid principal balance Related allowance Recorded investment Unpaid principal balance Related allowance With no related allowance recorded: Commercial real estate $ 1,260 $ 1,672 $ — $ 1,310 $ 1,686 $ — Consumer real estate — — — — — — Construction and land development — — — — — — Commercial and industrial — — — — — — Consumer — — — — — — Other — — — — — — Subtotal 1,260 1,672 — 1,310 1,686 — With an allowance recorded: Commercial real estate — — — — — — Consumer real estate — — — — — — Construction and land development — — — — — — Commercial and industrial 1,969 2,770 500 2,309 2,921 500 Consumer — — — — — — Other — — — — — — Subtotal 1,969 2,770 500 2,309 2,921 500 Total $ 3,229 $ 4,442 $ 500 $ 3,619 $ 4,607 $ 500 The following table presents information related to the average recorded investment and interest income recognized on impaired loans for the three and six months ended June 30, 2017 and 2016 (dollars in thousands): Three Months Ended Three Months Ended Six Months Ended Six Months Ended June 30, 2017 June 30, 2016 June 30, 2017 June 30, 2016 Average recorded investment Interest income recognized Average recorded investment Interest income recognized Average recorded investment Interest income recognized Average recorded investment Interest income recognized With no related allowance recorded: Commercial real estate $ 1,278 $ — $ 1,598 $ — $ 1,286 $ — $ 1,771 $ — Consumer real estate — — 789 — — — 930 13 Construction and land development — — — — — — — — Commercial and industrial — — 3,476 — — — 3,596 — Consumer — — — — — — — — Other — — — — — — — — Subtotal 1,278 — 5,863 — 1,286 — 6,297 13 With an allowance recorded: Commercial real estate — — — — — — — — Consumer real estate — — — — — — — — Construction and land development — — — — — — — — Commercial and industrial 2,194 — — — 2,242 — — — Consumer — — — — — — — — Other — — — — — — — — Subtotal 2,194 — — — 2,242 — — — Total $ 3,472 $ — $ 5,863 $ — $ 3,528 $ — $ 6,297 $ 13 There was no interest income recognized on a cash basis for impaired loans for the three or six months ended June 30, 2017 or 2016. The following table presents the aging of the recorded investment in past-due loans as of June 30, 2017 and December 31, 2016 by class of loans (dollars in thousands): 30 - 59 60 - 89 Greater Than Days Days 89 Days Total Loans Not Past Due Past Due Past Due Past Due Past Due Total June 30, 2017 Commercial real estate $ 364 $ — $ — $ 364 $ 385,394 $ 385,758 Consumer real estate 418 — — 418 99,333 99,751 Construction and land development — — — — 62,152 62,152 Commercial and industrial 2,117 — — 2,117 404,519 406,636 Consumer — — 15 15 4,081 4,096 Other — — — — 38,783 38,783 Total $ 2,899 $ — $ 15 $ 2,914 $ 994,262 $ 997,176 December 31, 2016 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 The following table presents the recorded investment in non-accrual loans, past due loans over 90 days outstanding and accruing and troubled debt restructurings (“TDR”) by class of loans as of June 30, 2017 and December 31, 2016 (dollars in thousands): Non-Accrual Past Due Over 90 Days and Accruing Troubled Debt Restructurings June 30, 2017 Commercial real estate $ 1,260 $ — $ 1,239 Consumer real estate — — — Construction and land development — — — Commercial and industrial 1,969 — — Consumer — 15 — Other — — — Total $ 3,229 $ 15 $ 1,239 December 31, 2016 Commercial real estate $ 1,310 $ — $ 1,272 Consumer real estate — — — Construction and land development — — — Commercial and industrial 2,309 — — Consumer — — — Other — — — Total $ 3,619 $ — $ 1,272 As of June 30, 2017 and December 31, 2016, all loans classified as nonperforming were deemed to be impaired. As of June 30, 2017 and December 31, 2016, the Company had a recorded investment in TDR of $1.2 million and $1.3 million, respectively. The Company had no specific allowance for those loans at June 30, 2017 or December 31, 2016 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 Bank’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 three and six months ended June 30, 2016 (dollars in thousands). There were no TDR identified during the three or six months ended June 30, 2017. Three Months Ended Six Months Ended June 30, June 30, Number of contracts Pre modification outstanding recorded investment Post modification outstanding recorded investment, net of related allowance 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 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 three and six months ended June 30, 2017 and 2016 (dollars in thousands). There were no TDR for which there was a payment default within twelve months following the modification during the three or six months ended June 30, 2017. Three Months Ended Six Months Ended June 30, June 30, Number of contracts Recorded investment 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 The consumer loan TDR that subsequently defaulted during the six months ended June 30, 2016 had no specific reserve in the allowance for loan losses and resulted in a $0.1 million charge-off. A loan is considered to be in payment default once it is 30 days contractually past due under the modified terms.

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances	6 Months Ended
	Jun. 30, 2017
Federal Home Loan Banks [Abstract]
Federal Home Loan Bank Advances	NOTE 4 – FEDERAL HOME LOAN BANK ADVANCES The Company had outstanding borrowings totaling of $105.0 million and $55.0 million at June 30, 2017 and December 31, 2016, respectively, via various 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): June 30, 2017 December 31, 2016 Year Amount Interest Rates Amount Interest Rates 2017 $ 85,000 1.20 % $ 55,000 0.80 % 2018 20,000 1.47 — — 2019 — — — — 2020 — — — — 2021 — — — — Thereafter — — — — Total $ 105,000 1.25 % $ 55,000 0.80 % Advances from the FHLB are collateralized by investment securities, FHLB stock and certain commercial and residential real estate mortgage loans totaling $388.0 million under a blanket mortgage collateral agreement. At June 30, 2017, the amount of available credit from the FHLB totaled $80.7 million.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2017
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	NOTE 5 – ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The following were changes in accumulated other comprehensive income (loss) by component, net of tax, for the six months ended June 30, 2017 and 2016 (dollars in thousands): Unrealized Gains Unrealized Gains and and Losses Losses on Losses on on Available Securities Cash Flow for Sale Transferred to Hedges Securities Held to Maturity Total Six Months Ended June 30, 2017 Beginning Balance $ (4,241 ) $ (698 ) $ (1,212 ) $ (6,151 ) Other comprehensive income (loss) before reclassification, net of tax (131 ) 1,178 — 1,047 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 313 (21 ) 51 343 Net current period other comprehensive income (loss) 182 1,157 51 1,390 Ending Balance $ (4,059 ) $ 459 $ (1,161 ) $ (4,761 ) Six Months Ended June 30, 2016 Beginning Balance $ (3,704 ) $ 105 $ (1,315 ) $ (4,914 ) Other comprehensive income (loss) before reclassification, net of tax (1,139 ) 2,205 — 1,066 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 173 (77 ) 51 147 Net current period other comprehensive income (loss) (966 ) 2,128 51 1,213 Ending Balance $ (4,670 ) $ 2,233 $ (1,264 ) $ (3,701 ) The following were significant amounts reclassified out of each component of accumulated other comprehensive income (loss) for the three and six months ended June 30, 2017 and 2016 (dollars in thousands): Affected Line Item Details about Accumulated Other Three Months Ended June 30, Six Months Ended June 30, in the Statement Where Comprehensive Income Components 2017 2016 2017 2016 Net Income is Presented Unrealized losses on cash flow hedges $ 108 $ 38 $ 213 $ 75 Interest expense - money market 50 50 100 98 Interest expense - Federal Home Loan Bank advances $ 158 $ 88 $ 313 $ 173 Net of tax Unrealized gains and losses on available for sale securities $ (40 ) $ (86 ) $ (34 ) $ (125 ) Net gain on sale of securities 15 33 13 48 Income tax expense $ (25 ) $ (53 ) $ (21 ) $ (77 ) Net of tax Unrealized losses on securities transferred to held to maturity $ 42 $ 42 $ 83 $ 83 Interest income - securities (16 ) (16 ) (32 ) (32 ) Income tax benefit $ 26 $ 26 $ 51 $ 51 Net of tax

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 6 – INCOME TAXES The Company’s effective tax rate for the three and six months ended June 30, 2017 was 28.4% and 31.4% compared to 31.9% and 32.5% for the three and six months ended June 30, 2016. In March 2016, the FASB issued guidance to simplify several aspects of the accounting for share-based payment award transactions, including income tax consequences. In addition to other changes, the guidance changes the accounting for excess tax benefits and tax deficiencies from generally being recognized in additional paid-in capital to recognition as income tax expense or benefit in the period they occur. The Company adopted the new guidance in the first quarter of 2017. As a result, the Company’s income tax expense was reduced by $21,000 and $167,000 for the three and six months ended June 30, 2017. The effective tax rate compared favorably to the statutory federal rate of 34% and Tennessee excise tax rate of 6.5% primarily due to investments in qualified municipal securities, company owned life insurance, state tax credits, net of the effect of certain non-deductible expenses and the recognition of excess tax benefits related to stock compensation.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 7 – 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 June 30, 2017 and December 31, 2016 (dollars in thousands): Contract or notional amount June 30, 2017 December 31, 2016 Financial instruments whose contract amounts represent credit risk: Unused commitments to extend credit $ 564,569 $ 508,990 Standby letters of credit 12,132 10,886 Total $ 576,701 $ 519,876 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 June 30, 2017, will not have a material impact on the financial statements of the Company.

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2017
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives	NOTE 8 – DERIVATIVES 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 $20 million as of June 30, 2017 and December 31, 2016, 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): June 30, 2017 December 31, 2016 Notional amounts $ 20,000 $ 20,000 Weighted average pay rates 3.54 % 3.54 % Weighted average receive rates 3 month 3 month LIBOR Weighted average maturity 6.0 years 6.5 years Fair value $ (1,747 ) $ (1,535 ) Amount of unrealized loss recognized in accumulated other comprehensive income, net of tax $ (1,078 ) $ (947 ) 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 $2.8 million at June 30, 2017. There was no collateral posted from the counterparties to the Company as of June 30, 2017. 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 was as follows (dollars in thousands): June 30, 2017 December 31, 2016 Notional Estimated Notional Estimated amount fair value amount fair value Interest rate swap agreements: Pay fixed/receive variable swaps $ 47,425 $ (331 ) $ 41,254 $ (460 ) Pay variable/receive fixed swaps 47,425 331 41,254 460 Total $ 94,850 $ — $ 82,508 $ —

Stock Options and Restricted Sh

Stock Options and Restricted Shares	6 Months Ended
	Jun. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Options and Restricted Shares	NOTE 9 - STOCK OPTIONS AND RESTRICTED SHARES During 2008, the board of directors of the Bank approved the CapStar Bank 2008 Stock Incentive Plan (the Plan). The Plan was intended to provide incentives to certain officers, employees, and directors to stimulate their efforts toward the continued success of the Bank and to operate and manage the business in a manner that will provide for the long‑term growth and profitability of the Bank. Additionally the Plan was intended to encourage stock ownership to align the interests of employees and shareholders and to provide a means of obtaining, rewarding and retaining officers, employees, and directors. 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 CapStar Financial Holdings, Inc. Stock Incentive Plan, which the board of directors adopted in 2016. The Stock Incentive 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 reserved 1,569,475 shares of stock for issuance of stock incentives. Stock incentives include both restricted share and stock option grants. Total shares issuable under the plan were 192,391 at June 30, 2017. 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 (dollars in thousands): Three Months Ended Six Months Ended June 30, June 30, 2017 2016 2017 2016 Stock-based compensation expense before income taxes $ 248 $ 235 $ 484 $ 431 Less: deferred tax benefit (95 ) (90 ) (185 ) (165 ) Reduction of net income $ 153 $ 145 $ 299 $ 266 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 fair value of each restricted stock grant is based on valuations performed by independent consultants. 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 the six months ended June 30, 2017 follows: Weighted Average Restricted Grant Date Nonvested Shares Shares Fair Value Nonvested at beginning of period 199,641 $ 12.34 Granted 15,633 19.19 Vested (46,869 ) 12.24 Forfeited (2,300 ) 13.22 Nonvested at end of period 166,105 $ 13.00 As of June 30, 2017, there was $1.4 million of unrecognized compensation cost related to nonvested shares granted under the Plan. The cost is expected to be recognized over a weighted-average period of 1.8 years. The total fair value of shares vested during the six months ended June 30, 2017 and 2016 was $0.6 million and $0.3 million. 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 paid dividends in the past. 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. There were no options granted in 2017. The fair value of options granted was determined using the following weighted average assumptions as of the grant date: 2017 2016 Dividend yield — — Expected term (in years) — 7.48 Expected stock price volatility — 17.20 % Risk-free interest rate — 1.66 % Pre-vest forfeiture rate — 10.25 % A summary of the activity in stock options for the six months ended June 30, 2017 follows: Weighted Weighted Average Average Remaining Exercise Contractual Shares Price Term (years) Outstanding at beginning of period 1,006,000 $ 10.48 Granted — — Exercised (25,750 ) 10.00 Forfeited or expired — — Outstanding at end of period 980,250 $ 10.49 2.7 Fully vested and expected to vest 973,694 $ 10.48 2.6 Exercisable at end of period 931,500 $ 10.41 2.4 Information related to stock options during each year follows: 2017 2016 Intrinsic value of options exercised $ 240,570 $ — Cash received from option exercises 257,500 — Tax benefit realized from option exercises 92,114 — Weighted average fair value of options granted — 3.16 As of June 30, 2017, there was $0.1 million of 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 2.1 years.

Regulatory Capital Requirements

Regulatory Capital Requirements	6 Months Ended
	Jun. 30, 2017
Banking And Thrift [Abstract]
Regulatory Capital Requirements	NOTE 10 – REGULATORY CAPITAL REQUIREMENTS 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 Banking Supervision’s capital guidelines for U.S. banks (Basel III rules) became effective for the Bank 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 June 30, 2017, the Company and the Bank met all regulatory capital adequacy requirements to which they are subject. The Company’s and the Bank’s capital amounts and ratios as of June 30, 2017 and December 31, 2016 are presented in the following table (dollars in thousands). Actual Minimum capital requirement (1) Minimum to be well-capitalized (2) Amount Ratio Amount Ratio Amount Ratio At June 30, 2017: Total capital to risk-weighted assets: CapStar Financial Holdings, Inc. $ 148,052 11.51 % $ 102,861 8.00 % N/A N/A CapStar Bank 135,219 10.52 102,860 8.00 $ 128,575 10.00 Tier I capital to risk-weighted assets: CapStar Financial Holdings, Inc. 135,525 10.54 77,145 6.00 N/A N/A CapStar Bank 122,692 9.54 77,145 6.00 102,860 8.00 Common equity Tier 1 capital to risk weighted assets: CapStar Financial Holdings, Inc. 126,817 9.86 57,859 4.50 N/A N/A CapStar Bank 106,484 8.28 57,859 4.50 83,573 6.50 Tier I capital to average assets: CapStar Financial Holdings, Inc. 135,525 9.77 55,498 4.00 N/A N/A CapStar Bank 122,692 8.85 55,481 4.00 69,351 5.00 At December 31, 2016: Total capital to risk-weighted assets: CapStar Financial Holdings, Inc. $ 149,616 12.60 % $ 95,028 8.00 % N/A N/A CapStar Bank 126,718 10.67 95,028 8.00 $ 118,785 10.00 Tier I capital to risk-weighted assets: CapStar Financial Holdings, Inc. 137,909 11.61 71,271 6.00 N/A N/A CapStar Bank 115,011 9.68 71,271 6.00 95,028 8.00 Common equity Tier 1 capital to risk weighted assets: CapStar Financial Holdings, Inc. 129,528 10.90 53,453 4.50 N/A N/A CapStar Bank 99,130 8.35 53,453 4.50 77,210 6.50 Tier I capital to average assets: CapStar Financial Holdings, Inc. 137,909 10.46 52,727 4.00 N/A N/A CapStar Bank 115,011 8.72 52,727 4.00 65,909 5.00 (1) For the calendar year 2017, the Company must maintain a capital conservation buffer of Tier 1 common equity capital in excess of minimum risk-based capital ratios by at least 1.25% to avoid limits on capital distributions and certain discretionary bonus payments to executive officers and similar employees. (2) For the Company to be well-capitalized, the Bank must be well-capitalized and the Company must not be subject to any written agreement, order, capital directive, or prompt corrective action directive issued by the Federal Reserve to meet and maintain a specific capital level for any capital measure.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 11 – EARNINGS PER SHARE The following is a summary of the basic and diluted earnings per share calculation for the three and six months ended June 30, 2017 and 2016 (dollars in thousands, except share data): Three Months Ended Six Months Ended June 30, June 30, 2017 2016 2017 2016 Basic net income (loss) per share calculation: Numerator – Net income (loss) $ (3,342 ) $ 2,476 $ (3,010 ) $ 4,060 Denominator – Average common shares outstanding 11,226,216 8,682,438 11,218,624 8,655,561 Basic net income (loss) per share $ (0.30 ) $ 0.29 $ (0.27 ) $ 0.47 Diluted net income (loss) per share calculation: Numerator – Net income (loss) $ (3,342 ) $ 2,476 $ (3,010 ) $ 4,060 Denominator – Average common shares outstanding 11,226,216 8,682,438 11,218,624 8,655,561 Dilutive shares contingently issuable 1,513,888 1,993,478 1,543,365 1,968,443 Average diluted common shares outstanding 12,740,104 10,675,916 12,761,989 10,624,004 Diluted net income (loss) per share $ (0.26 ) $ 0.23 $ (0.24 ) $ 0.38

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value	NOTE 12 – 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 Bank used the following methods and significant assumptions to estimate fair value: Investment Securities Derivatives-Interest Rate Swaps Impaired Loans Other Real Estate Owned Loans Held For Sale Assets and liabilities measured at fair value on a recurring basis are summarized below (dollars in thousands): Fair value measurements at June 30, 2017 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 $ 11,371 $ — $ 11,371 $ — Obligations of states and political subdivisions 20,891 — 20,891 — Mortgage-backed securities-residential 102,807 — 102,807 — Asset-backed securities 20,594 — 20,594 — Total securities available for sale $ 155,663 $ — $ 155,663 $ — Derivatives: Interest rate swaps - customer related $ 421 $ — $ 421 $ — Liabilities: Derivatives: Interest rate swaps - customer related $ (421 ) $ — $ (421 ) $ — Interest rate swaps - cash flow hedges (1,747 ) — (1,747 ) — Total derivatives $ (2,168 ) $ — $ (2,168 ) $ — 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 — Mortgage-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 $ (1,995 ) $ — $ (1,995 ) $ — Assets measured at fair value on a nonrecurring basis are summarized below (dollars in thousands): Fair value measurements at June 30, 2017 Quoted prices in active Significant markets for other Significant identical observable unobservable Carrying assets inputs inputs Value (level 1) (level 2) (level 3) Assets: Impaired loans: Commercial and industrial $ 1,469 — — 1,469 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: Impaired loans: Commercial and industrial $ 1,809 — — 1,809 The following table presents quantitative information about Level 3 fair value measurements for assets measured at fair value on a non-recurring basis at June 30, 2017 and December 31, 2016 (dollars in thousands): Range Fair Valuation (Weighted- June 30, 2017 Value Technique(s) Unobservable Input(s) Average) Impaired loans: Commercial and industrial $ 1,469 Sales comparison approach Appraisal discounts 25 % Range Fair Valuation (Weighted- December 31, 2016 Value Technique(s) Unobservable Input(s) Average) Impaired loans: Commercial and industrial $ 1,809 Sales comparison approach Appraisal discounts 25 % Fair Value of Financial Instruments The carrying value and estimated fair values of the Bank’s financial instruments at June 30, 2017 and December 31, 2016 were as follows (dollars in thousands): June 30, 2017 December 31, 2016 Carrying Carrying Fair value amount Fair value amount Fair value level of input Financial assets: Cash and due from banks, interest-bearing deposits in financial institutions $ 48,093 $ 48,093 $ 63,456 $ 63,456 Level 1 Federal funds sold — — 16,654 16,654 Level 1 Securities available for sale 155,663 155,663 182,355 182,355 Level 2 Securities held to maturity 46,458 49,902 46,864 49,731 Level 2 Loans held for sale 73,573 75,608 42,111 42,302 Level 2 Restricted equity securities 8,292 N/A 6,032 N/A N/A Loans, net 996,617 995,565 935,251 934,628 Level 3 Accrued interest receivable 3,571 3,571 3,942 3,942 Level 2 Bank owned life insurance 22,189 22,189 21,900 21,900 Level 2 Other assets 421 421 460 460 Level 2 Financial liabilities: Deposits 1,120,985 1,082,708 1,128,723 1,088,758 Level 3 Federal Home Loan Bank advances 105,000 104,985 55,000 54,989 Level 2 Accrued interest payable 286 286 212 212 Level 2 Other liabilities 4,057 4,057 5,349 5,349 Level 3 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 Bank’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 Bank’s loan portfolio is initially fair valued using a segmented approach. The Bank 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) 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. (i) Accrued Interest Receivable/Payable The carrying amounts of accrued interest approximate fair value. (j) 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. (k) 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. (l) 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 Bank’s entire holdings of a particular instrument. Because no market exists for a significant portion of the Bank’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.

Summary of Significant Accoun20

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements as of and for the period ended June 30, 2017 include CapStar Financial Holdings, Inc. and its wholly owned subsidiary, CapStar Bank (the “Bank”, together referred to as the “Company”). Significant intercompany transactions and accounts are eliminated in consolidation. 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 accompanying unaudited consolidated financial statements have been prepared in accordance with instructions to Form 10-Q and do not include all information and footnotes required by U.S. generally accepted accounting principles (“U.S. GAAP”) for complete financial statements. All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. These unaudited consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and related notes appearing in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.
Initial Public Offering	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 $21.9 million from the offering, after deducting the underwriting discounts and commissions and estimated offering expenses. We did not receive any proceeds from the sale of shares by the selling shareholders.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. 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 losses, determination of impairment of intangible assets, including goodwill, the valuation of our investment portfolio, deferred tax assets and estimated liabilities. There have been no significant changes to the Company’s critical accounting policies as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.
Tri-Net Fees	Tri-Net Fees Tri-Net fees represent a new line of business, implemented in the fourth quarter of 2016, which originates, with the intent to sell, commercial real estate loans to third-party investors. All of these loan sales transfer servicing rights to the buyer. 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 Tri-Net fees, net of related costs such as commission expenses. Loans that have not been sold at period end are classified as held for sale on the balance sheet and recorded at the lower of aggregate cost or fair value. Net unrealized losses, if any, are recorded as a valuation allowance and charged to earnings.
Subsequent Events	Subsequent Events Accounting Standards Codification (“ASC”) 855, Subsequent Events, establishes general standards of accounting for and disclosure of events that occur after the balance sheet date but before financial statements are issued. The Company evaluated all events or transactions that occurred after June 30, 2017 through the date of the issued financial statements.

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2017
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities	The amortized cost and fair value of securities available-for-sale and held-to-maturity at June 30, 2017 and December 31, 2016 are summarized as follows (dollars in thousands): June 30, 2017 December 31, 2016 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 $ 11,531 $ 5 $ (165 ) $ 11,371 $ 9,517 $ — $ (143 ) $ 9,374 State and municipal securities 20,882 200 (191 ) 20,891 28,480 65 (632 ) 27,913 Mortgage-backed securities 104,274 23 (1,490 ) 102,807 126,637 17 (2,059 ) 124,595 Asset-backed securities 21,001 — (407 ) 20,594 21,620 — (1,147 ) 20,473 Total $ 157,688 $ 228 $ (2,253 ) $ 155,663 $ 186,254 $ 82 $ (3,981 ) $ 182,355 Securities held-to-maturity: State and municipal securities $ 36,886 $ 3,284 $ — $ 40,170 $ 36,842 $ 2,784 $ — $ 39,626 Mortgage-backed securities 4,241 69 — 4,310 4,687 79 — 4,766 Other debt securities 5,331 91 — 5,422 5,335 11 (7 ) 5,339 Total $ 46,458 $ 3,444 $ — $ 49,902 $ 46,864 $ 2,874 $ (7 ) $ 49,731
Summary of Securities with Unrealized Losses and Length of Time Continuous Loss Positions	Security fair values are established by an independent pricing service as of the dates indicated. The difference between amortized cost and fair value reflects current interest rates and represents the potential gain (loss) had the portfolio been liquidated on those dates. Security gains (losses) are realized only in the event of dispositions prior to maturity or other-than-temporary impairment. Securities with unrealized losses as of June 30, 2017 and December 31, 2016, and the length of time they were in continuous loss positions as of such dates are as follows (in thousands): Less than 12 months 12 months or more Total June 30, 2017 Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses U. S. government agency securities $ 9,349 $ (165 ) $ — $ — $ 9,349 $ (165 ) State and municipal securities 10,581 (187 ) 449 (4 ) 11,030 (191 ) Mortgage-backed securities 90,127 (1,364 ) 8,147 (126 ) 98,274 (1,490 ) Asset-backed securities — — 20,594 (407 ) 20,594 (407 ) Total temporarily impaired securities $ 110,057 $ (1,716 ) $ 29,190 $ (537 ) $ 139,247 $ (2,253 ) December 31, 2016 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 )
Summary of Proceeds from Sales and Calls of Securities and Associated Gains and Losses	The proceeds from sales and calls of securities and the associated gains and losses are listed below (dollars in thousands): Six Months Ended Six Months Ended June 30, 2017 June 20, 2016 Proceeds $ 40,181 $ 45,314 Gross gains 91 238 Gross losses (57 ) (113 )
Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity	The amortized cost and fair value of securities at June 30, 2017, by contractual maturity, are shown below (dollars 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 $ 12,103 $ 12,267 $ 27,504 $ 29,563 Due five to ten years 18,073 17,835 12,243 13,289 Due beyond ten years 2,237 2,160 2,470 2,740 Mortgage-backed securities 104,274 102,807 4,241 4,310 Asset-backed securities 21,001 20,594 — — $ 157,688 $ 155,663 $ 46,458 $ 49,902

Loans and Allowance for Loan 22

Loans and Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Summary of Loan Portfolio	A summary of the loan portfolio as of June 30, 2017 and December 31, 2016 follows (dollars in thousands): June 30, 2017 December 31, 2016 Commercial real estate $ 385,758 $ 302,322 Consumer real estate 99,751 97,015 Construction and land development 62,152 94,491 Commercial and industrial 406,636 379,620 Consumer 4,096 5,974 Other 38,783 56,796 Total 997,176 936,218 Less net unearned income (559 ) (967 ) 996,617 935,251 Allowance for loan losses (12,454 ) (11,634 ) $ 984,163 $ 923,617
Summary of Loans by Risk Rating	The following tables present the loan balances by category as well as risk rating (dollars in thousands): Performing Loans June 30, 2017 Pass/Watch Special Mention Substandard Total Performing Total Loans Total Commercial real estate $ 384,498 $ — $ — $ 384,498 $ 1,260 $ 385,758 Consumer real estate 99,461 — 290 99,751 — 99,751 Construction and land development 62,152 — — 62,152 — 62,152 Commercial and industrial 381,333 17,841 5,493 404,667 1,969 406,636 Consumer 4,081 — 15 4,096 — 4,096 Other 38,783 — — 38,783 — 38,783 Total $ 970,308 $ 17,841 $ 5,798 $ 993,947 $ 3,229 $ 997,176 December 31, 2016 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
Summary of Changes and Breakdown of Allowance for Loan Losses and Loan Portfolio by Loan Category	The following tables detail the changes in the ALL for the three and six months ended June 30, 2017 and 2016 (in thousands): Commercial real estate Consumer real estate Construction and land development Commercial and industrial Consumer Other Total Three Months Ended June 30, 2017 Balance, beginning of period $ 3,257 $ 1,048 $ 1,090 $ 8,013 $ 60 $ 529 $ 13,997 Charged-off loans — — — (11,244 ) — — (11,244 ) Recoveries — 1 — — 10 — 11 Provision for loan losses 276 32 (179 ) 9,626 (13 ) (52 ) 9,690 Balance, end of period $ 3,533 $ 1,081 $ 911 $ 6,395 $ 57 $ 477 $ 12,454 Three Months Ended June 30, 2016 Balance, beginning of period $ 2,970 $ 963 $ 799 $ 4,924 $ 113 $ 530 $ 10,299 Charged-off loans — — (11 ) (22 ) — (33 ) Recoveries — — — 4 1 — 5 Provision for loan losses (374 ) 5 144 120 12 276 183 Balance, end of period $ 2,596 $ 968 $ 943 $ 5,037 $ 104 $ 806 $ 10,454 Commercial real estate Consumer real estate Construction and land development Commercial and industrial Consumer Other Total Six Months Ended June 30, 2017 Balance, beginning of period $ 2,655 $ 1,013 $ 1,574 $ 5,618 $ 76 $ 698 $ 11,634 Charged-off loans — — — (12,369 ) — — (12,369 ) Recoveries — 1 — 3 91 — 95 Provision for loan losses 878 67 (663 ) 13,143 (110 ) (221 ) 13,094 Balance, end of period $ 3,533 $ 1,081 $ 911 $ 6,395 $ 57 $ 477 $ 12,454 Six Months Ended June 30, 2016 Balance, beginning of period $ 2,879 $ 968 $ 914 $ 4,693 $ 103 $ 575 $ 10,132 Charged-off loans (350 ) — — (311 ) (146 ) — (807 ) Recoveries — — — 8 1 — 9 Provision for loan losses 67 — 29 647 146 231 1,120 Balance, end of period $ 2,596 $ 968 $ 943 $ 5,037 $ 104 $ 806 $ 10,454 A breakdown of the ALL and the loan portfolio by loan category at June 30, 2017 and December 31, 2016 follows (dollars in thousands): Commercial real estate Consumer real estate Construction and land development Commercial and industrial Consumer Other Total June 30, 2017 Allowance for Loan Losses: Collectively evaluated for impairment $ 3,533 $ 1,081 $ 911 $ 5,895 $ 57 $ 477 $ 11,954 Individually evaluated for impairment — — — 500 — — 500 Balances, end of period $ 3,533 $ 1,081 $ 911 $ 6,395 $ 57 $ 477 $ 12,454 Loans: Collectively evaluated for impairment $ 384,498 $ 99,751 $ 62,152 $ 404,667 $ 4,096 $ 38,783 $ 993,947 Individually evaluated for impairment 1,260 — — 1,969 — — 3,229 Balances, end of period $ 385,758 $ 99,751 $ 62,152 $ 406,636 $ 4,096 $ 38,783 $ 997,176 December 31, 2016 Allowance for Loan Losses: Collectively evaluated for impairment $ 2,655 $ 1,013 $ 1,574 $ 5,118 $ 76 $ 698 $ 11,134 Individually evaluated for impairment — — — 500 — — 500 Balances, end of period $ 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 Balances, end of period $ 302,322 $ 97,015 $ 94,491 $ 379,620 $ 5,974 $ 56,796 $ 936,218
Allocation of ALL with Corresponding Percentage of ALL in Each Category to Total Loans, Net of Deferred Fee	The following table presents the allocation of the ALL for each respective loan category with the corresponding percentage of the ALL in each category to total loans, net of deferred fees as of June 30, 2017 and December 31, 2016 (dollars in thousands): June 30, 2017 December 31, 2016 Amount Percent of total loans, net of deferred fees Amount Percent of total loans, net of deferred fees Commercial real estate $ 3,533 0.35 % $ 2,655 0.28 % Consumer real estate 1,081 0.11 1,013 0.11 Construction and land development 911 0.09 1,574 0.17 Commercial and industrial 6,395 0.64 5,618 0.60 Consumer 57 0.01 76 0.01 Other 477 0.05 698 0.07 Total allowance for loan losses $ 12,454 1.25 % $ 11,634 1.24 %
Summary of Impaired Loans	The following table presents the Company’s impaired loans that were evaluated for specific loss allowance as of June 30, 2017 and December 31, 2016 (dollars in thousands): June 30, 2017 December 31, 2016 Recorded investment Unpaid principal balance Related allowance Recorded investment Unpaid principal balance Related allowance With no related allowance recorded: Commercial real estate $ 1,260 $ 1,672 $ — $ 1,310 $ 1,686 $ — Consumer real estate — — — — — — Construction and land development — — — — — — Commercial and industrial — — — — — — Consumer — — — — — — Other — — — — — — Subtotal 1,260 1,672 — 1,310 1,686 — With an allowance recorded: Commercial real estate — — — — — — Consumer real estate — — — — — — Construction and land development — — — — — — Commercial and industrial 1,969 2,770 500 2,309 2,921 500 Consumer — — — — — — Other — — — — — — Subtotal 1,969 2,770 500 2,309 2,921 500 Total $ 3,229 $ 4,442 $ 500 $ 3,619 $ 4,607 $ 500 The following table presents information related to the average recorded investment and interest income recognized on impaired loans for the three and six months ended June 30, 2017 and 2016 (dollars in thousands): Three Months Ended Three Months Ended Six Months Ended Six Months Ended June 30, 2017 June 30, 2016 June 30, 2017 June 30, 2016 Average recorded investment Interest income recognized Average recorded investment Interest income recognized Average recorded investment Interest income recognized Average recorded investment Interest income recognized With no related allowance recorded: Commercial real estate $ 1,278 $ — $ 1,598 $ — $ 1,286 $ — $ 1,771 $ — Consumer real estate — — 789 — — — 930 13 Construction and land development — — — — — — — — Commercial and industrial — — 3,476 — — — 3,596 — Consumer — — — — — — — — Other — — — — — — — — Subtotal 1,278 — 5,863 — 1,286 — 6,297 13 With an allowance recorded: Commercial real estate — — — — — — — — Consumer real estate — — — — — — — — Construction and land development — — — — — — — — Commercial and industrial 2,194 — — — 2,242 — — — Consumer — — — — — — — — Other — — — — — — — — Subtotal 2,194 — — — 2,242 — — — Total $ 3,472 $ — $ 5,863 $ — $ 3,528 $ — $ 6,297 $ 13
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 June 30, 2017 and December 31, 2016 by class of loans (dollars in thousands): 30 - 59 60 - 89 Greater Than Days Days 89 Days Total Loans Not Past Due Past Due Past Due Past Due Past Due Total June 30, 2017 Commercial real estate $ 364 $ — $ — $ 364 $ 385,394 $ 385,758 Consumer real estate 418 — — 418 99,333 99,751 Construction and land development — — — — 62,152 62,152 Commercial and industrial 2,117 — — 2,117 404,519 406,636 Consumer — — 15 15 4,081 4,096 Other — — — — 38,783 38,783 Total $ 2,899 $ — $ 15 $ 2,914 $ 994,262 $ 997,176 December 31, 2016 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
Schedule of Recorded In Non Accrual Loans, Past Due Loans over 90 Days Outstanding and Accruing and Troubled Debt Restructurings	The following table presents the recorded investment in non-accrual loans, past due loans over 90 days outstanding and accruing and troubled debt restructurings (“TDR”) by class of loans as of June 30, 2017 and December 31, 2016 (dollars in thousands): Non-Accrual Past Due Over 90 Days and Accruing Troubled Debt Restructurings June 30, 2017 Commercial real estate $ 1,260 $ — $ 1,239 Consumer real estate — — — Construction and land development — — — Commercial and industrial 1,969 — — Consumer — 15 — Other — — — Total $ 3,229 $ 15 $ 1,239 December 31, 2016 Commercial real estate $ 1,310 $ — $ 1,272 Consumer real estate — — — Construction and land development — — — Commercial and industrial 2,309 — — Consumer — — — Other — — — Total $ 3,619 $ — $ 1,272
Schedule of Presents Loans by Class Modified as TDR	The following table presents loans by class modified as TDR that occurred during the three and six months ended June 30, 2016 (dollars in thousands). Three Months Ended Six Months Ended June 30, June 30, Number of contracts Pre modification outstanding recorded investment Post modification outstanding recorded investment, net of related allowance 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
Schedule of Loans by Class Modified as TDR for the Payment Default Within Twelve Months	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 three and six months ended June 30, 2017 and 2016 (dollars in thousands). Three Months Ended Six Months Ended June 30, June 30, Number of contracts Recorded investment 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

Federal Home Loan Bank Advanc23

Federal Home Loan Bank Advances (Tables)	6 Months Ended
	Jun. 30, 2017
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): June 30, 2017 December 31, 2016 Year Amount Interest Rates Amount Interest Rates 2017 $ 85,000 1.20 % $ 55,000 0.80 % 2018 20,000 1.47 — — 2019 — — — — 2020 — — — — 2021 — — — — Thereafter — — — — Total $ 105,000 1.25 % $ 55,000 0.80 %

Accumulated Other Comprehensi24

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2017
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 six months ended June 30, 2017 and 2016 (dollars in thousands): Unrealized Gains Unrealized Gains and and Losses Losses on Losses on on Available Securities Cash Flow for Sale Transferred to Hedges Securities Held to Maturity Total Six Months Ended June 30, 2017 Beginning Balance $ (4,241 ) $ (698 ) $ (1,212 ) $ (6,151 ) Other comprehensive income (loss) before reclassification, net of tax (131 ) 1,178 — 1,047 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 313 (21 ) 51 343 Net current period other comprehensive income (loss) 182 1,157 51 1,390 Ending Balance $ (4,059 ) $ 459 $ (1,161 ) $ (4,761 ) Six Months Ended June 30, 2016 Beginning Balance $ (3,704 ) $ 105 $ (1,315 ) $ (4,914 ) Other comprehensive income (loss) before reclassification, net of tax (1,139 ) 2,205 — 1,066 Amounts reclassified from accumulated other comprehensive income (loss), net of tax 173 (77 ) 51 147 Net current period other comprehensive income (loss) (966 ) 2,128 51 1,213 Ending Balance $ (4,670 ) $ 2,233 $ (1,264 ) $ (3,701 )
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 three and six months ended June 30, 2017 and 2016 (dollars in thousands): Affected Line Item Details about Accumulated Other Three Months Ended June 30, Six Months Ended June 30, in the Statement Where Comprehensive Income Components 2017 2016 2017 2016 Net Income is Presented Unrealized losses on cash flow hedges $ 108 $ 38 $ 213 $ 75 Interest expense - money market 50 50 100 98 Interest expense - Federal Home Loan Bank advances $ 158 $ 88 $ 313 $ 173 Net of tax Unrealized gains and losses on available for sale securities $ (40 ) $ (86 ) $ (34 ) $ (125 ) Net gain on sale of securities 15 33 13 48 Income tax expense $ (25 ) $ (53 ) $ (21 ) $ (77 ) Net of tax Unrealized losses on securities transferred to held to maturity $ 42 $ 42 $ 83 $ 83 Interest income - securities (16 ) (16 ) (32 ) (32 ) Income tax benefit $ 26 $ 26 $ 51 $ 51 Net of tax

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2017
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 June 30, 2017 and December 31, 2016 (dollars in thousands): Contract or notional amount June 30, 2017 December 31, 2016 Financial instruments whose contract amounts represent credit risk: Unused commitments to extend credit $ 564,569 $ 508,990 Standby letters of credit 12,132 10,886 Total $ 576,701 $ 519,876

Derivatives (Tables)

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2017
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): June 30, 2017 December 31, 2016 Notional amounts $ 20,000 $ 20,000 Weighted average pay rates 3.54 % 3.54 % Weighted average receive rates 3 month 3 month LIBOR Weighted average maturity 6.0 years 6.5 years Fair value $ (1,747 ) $ (1,535 ) Amount of unrealized loss recognized in accumulated other comprehensive income, net of tax $ (1,078 ) $ (947 )
Summary of Customer Related Interest Rate Swaps	A summary of the Company’s customer related interest rate swaps was as follows (dollars in thousands): June 30, 2017 December 31, 2016 Notional Estimated Notional Estimated amount fair value amount fair value Interest rate swap agreements: Pay fixed/receive variable swaps $ 47,425 $ (331 ) $ 41,254 $ (460 ) Pay variable/receive fixed swaps 47,425 331 41,254 460 Total $ 94,850 $ — $ 82,508 $ —

Stock Options and Restricted 27

Stock Options and Restricted Shares (Tables)	6 Months Ended
	Jun. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Company Recognized Stock-Based Compensation Expense	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 (dollars in thousands): Three Months Ended Six Months Ended June 30, June 30, 2017 2016 2017 2016 Stock-based compensation expense before income taxes $ 248 $ 235 $ 484 $ 431 Less: deferred tax benefit (95 ) (90 ) (185 ) (165 ) Reduction of net income $ 153 $ 145 $ 299 $ 266
Summary of Changes in Company's Nonvested Restricted Shares	A summary of the changes in the Company’s nonvested restricted shares for the six months ended June 30, 2017 follows: Weighted Average Restricted Grant Date Nonvested Shares Shares Fair Value Nonvested at beginning of period 199,641 $ 12.34 Granted 15,633 19.19 Vested (46,869 ) 12.24 Forfeited (2,300 ) 13.22 Nonvested at end of period 166,105 $ 13.00
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: 2017 2016 Dividend yield — — Expected term (in years) — 7.48 Expected stock price volatility — 17.20 % Risk-free interest rate — 1.66 % Pre-vest forfeiture rate — 10.25 %
Summary of Activity in Stock Options	A summary of the activity in stock options for the six months ended June 30, 2017 follows: Weighted Weighted Average Average Remaining Exercise Contractual Shares Price Term (years) Outstanding at beginning of period 1,006,000 $ 10.48 Granted — — Exercised (25,750 ) 10.00 Forfeited or expired — — Outstanding at end of period 980,250 $ 10.49 2.7 Fully vested and expected to vest 973,694 $ 10.48 2.6 Exercisable at end of period 931,500 $ 10.41 2.4
Information Related to Stock Options	Information related to stock options during each year follows: 2017 2016 Intrinsic value of options exercised $ 240,570 $ — Cash received from option exercises 257,500 — Tax benefit realized from option exercises 92,114 — Weighted average fair value of options granted — 3.16

Regulatory Capital Requiremen28

Regulatory Capital Requirements (Tables)	6 Months Ended
	Jun. 30, 2017
Banking And Thrift [Abstract]
Schedule of Capital Amounts and Ratios	The Company’s and the Bank’s capital amounts and ratios as of June 30, 2017 and December 31, 2016 are presented in the following table (dollars in thousands). Actual Minimum capital requirement (1) Minimum to be well-capitalized (2) Amount Ratio Amount Ratio Amount Ratio At June 30, 2017: Total capital to risk-weighted assets: CapStar Financial Holdings, Inc. $ 148,052 11.51 % $ 102,861 8.00 % N/A N/A CapStar Bank 135,219 10.52 102,860 8.00 $ 128,575 10.00 Tier I capital to risk-weighted assets: CapStar Financial Holdings, Inc. 135,525 10.54 77,145 6.00 N/A N/A CapStar Bank 122,692 9.54 77,145 6.00 102,860 8.00 Common equity Tier 1 capital to risk weighted assets: CapStar Financial Holdings, Inc. 126,817 9.86 57,859 4.50 N/A N/A CapStar Bank 106,484 8.28 57,859 4.50 83,573 6.50 Tier I capital to average assets: CapStar Financial Holdings, Inc. 135,525 9.77 55,498 4.00 N/A N/A CapStar Bank 122,692 8.85 55,481 4.00 69,351 5.00 At December 31, 2016: Total capital to risk-weighted assets: CapStar Financial Holdings, Inc. $ 149,616 12.60 % $ 95,028 8.00 % N/A N/A CapStar Bank 126,718 10.67 95,028 8.00 $ 118,785 10.00 Tier I capital to risk-weighted assets: CapStar Financial Holdings, Inc. 137,909 11.61 71,271 6.00 N/A N/A CapStar Bank 115,011 9.68 71,271 6.00 95,028 8.00 Common equity Tier 1 capital to risk weighted assets: CapStar Financial Holdings, Inc. 129,528 10.90 53,453 4.50 N/A N/A CapStar Bank 99,130 8.35 53,453 4.50 77,210 6.50 Tier I capital to average assets: CapStar Financial Holdings, Inc. 137,909 10.46 52,727 4.00 N/A N/A CapStar Bank 115,011 8.72 52,727 4.00 65,909 5.00 (1) For the calendar year 2017, the Company must maintain a capital conservation buffer of Tier 1 common equity capital in excess of minimum risk-based capital ratios by at least 1.25% to avoid limits on capital distributions and certain discretionary bonus payments to executive officers and similar employees. (2) For the Company to be well-capitalized, the Bank must be well-capitalized and the Company must not be subject to any written agreement, order, capital directive, or prompt corrective action directive issued by the Federal Reserve to meet and maintain a specific capital level for any capital measure.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Summary of Basic and Diluted Earnings Per Share	The following is a summary of the basic and diluted earnings per share calculation for the three and six months ended June 30, 2017 and 2016 (dollars in thousands, except share data): Three Months Ended Six Months Ended June 30, June 30, 2017 2016 2017 2016 Basic net income (loss) per share calculation: Numerator – Net income (loss) $ (3,342 ) $ 2,476 $ (3,010 ) $ 4,060 Denominator – Average common shares outstanding 11,226,216 8,682,438 11,218,624 8,655,561 Basic net income (loss) per share $ (0.30 ) $ 0.29 $ (0.27 ) $ 0.47 Diluted net income (loss) per share calculation: Numerator – Net income (loss) $ (3,342 ) $ 2,476 $ (3,010 ) $ 4,060 Denominator – Average common shares outstanding 11,226,216 8,682,438 11,218,624 8,655,561 Dilutive shares contingently issuable 1,513,888 1,993,478 1,543,365 1,968,443 Average diluted common shares outstanding 12,740,104 10,675,916 12,761,989 10,624,004 Diluted net income (loss) per share $ (0.26 ) $ 0.23 $ (0.24 ) $ 0.38

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2017
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 (dollars in thousands): Fair value measurements at June 30, 2017 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 $ 11,371 $ — $ 11,371 $ — Obligations of states and political subdivisions 20,891 — 20,891 — Mortgage-backed securities-residential 102,807 — 102,807 — Asset-backed securities 20,594 — 20,594 — Total securities available for sale $ 155,663 $ — $ 155,663 $ — Derivatives: Interest rate swaps - customer related $ 421 $ — $ 421 $ — Liabilities: Derivatives: Interest rate swaps - customer related $ (421 ) $ — $ (421 ) $ — Interest rate swaps - cash flow hedges (1,747 ) — (1,747 ) — Total derivatives $ (2,168 ) $ — $ (2,168 ) $ — 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 — Mortgage-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 $ (1,995 ) $ — $ (1,995 ) $ —
Summary of Assets Measured at Fair Value on a Nonrecurring Basis	Assets measured at fair value on a nonrecurring basis are summarized below (dollars in thousands): Fair value measurements at June 30, 2017 Quoted prices in active Significant markets for other Significant identical observable unobservable Carrying assets inputs inputs Value (level 1) (level 2) (level 3) Assets: Impaired loans: Commercial and industrial $ 1,469 — — 1,469 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: Impaired loans: Commercial and industrial $ 1,809 — — 1,809
Summary of Quantitative Information About Level 3 Fair Value Measurements for Assets Measured at Fair Value on a Non-recurring Basis	The following table presents quantitative information about Level 3 fair value measurements for assets measured at fair value on a non-recurring basis at June 30, 2017 and December 31, 2016 (dollars in thousands): Range Fair Valuation (Weighted- June 30, 2017 Value Technique(s) Unobservable Input(s) Average) Impaired loans: Commercial and industrial $ 1,469 Sales comparison approach Appraisal discounts 25 % Range Fair Valuation (Weighted- December 31, 2016 Value Technique(s) Unobservable Input(s) Average) Impaired loans: Commercial and industrial $ 1,809 Sales comparison approach Appraisal discounts 25 %
Summary of Carrying Value and Fair Values of the Bank's Financial Instruments	The carrying value and estimated fair values of the Bank’s financial instruments at June 30, 2017 and December 31, 2016 were as follows (dollars in thousands): June 30, 2017 December 31, 2016 Carrying Carrying Fair value amount Fair value amount Fair value level of input Financial assets: Cash and due from banks, interest-bearing deposits in financial institutions $ 48,093 $ 48,093 $ 63,456 $ 63,456 Level 1 Federal funds sold — — 16,654 16,654 Level 1 Securities available for sale 155,663 155,663 182,355 182,355 Level 2 Securities held to maturity 46,458 49,902 46,864 49,731 Level 2 Loans held for sale 73,573 75,608 42,111 42,302 Level 2 Restricted equity securities 8,292 N/A 6,032 N/A N/A Loans, net 996,617 995,565 935,251 934,628 Level 3 Accrued interest receivable 3,571 3,571 3,942 3,942 Level 2 Bank owned life insurance 22,189 22,189 21,900 21,900 Level 2 Other assets 421 421 460 460 Level 2 Financial liabilities: Deposits 1,120,985 1,082,708 1,128,723 1,088,758 Level 3 Federal Home Loan Bank advances 105,000 104,985 55,000 54,989 Level 2 Accrued interest payable 286 286 212 212 Level 2 Other liabilities 4,057 4,057 5,349 5,349 Level 3

Summary of Significant Accoun31

Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	Sep. 27, 2016	Mar. 31, 2017	Jun. 30, 2017	Jun. 30, 2016
Summary Of Significant Accounting Policies [Line Items]
Date of acquisition		Feb. 5, 2016
Common Stock
Summary Of Significant Accounting Policies [Line Items]
Exercise of common stock warrants, shares			11,379	1,000
Initial Public Offering | Common Stock
Summary Of Significant Accounting Policies [Line Items]
Issuance of common stock	2,972,750
Net proceeds from issuance	$ 21,900,000
Initial Public Offering by the Company | Common Stock
Summary Of Significant Accounting Policies [Line Items]
Issuance of common stock	1,688,049
Initial Public Offering by certain selling shareholders | Common Stock
Summary Of Significant Accounting Policies [Line Items]
Issuance of common stock	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

Securities - Summary of Amortiz

Securities - Summary of Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Securities available for sale [Abstract]
Amortized Cost	$ 157,688	$ 186,254
Gross unrealized gains	228	82
Gross unrealized (losses)	(2,253)	(3,981)
Securities available-for-sale, at fair value	155,663	182,355
Securities held to maturity [Abstract]
Amortized Cost	46,458	46,864
Gross unrealized gains	3,444	2,874
Gross unrealized (losses)		(7)
Estimated fair value	49,902	49,731
U. S. government agency securities
Securities available for sale [Abstract]
Amortized Cost	11,531	9,517
Gross unrealized gains	5
Gross unrealized (losses)	(165)	(143)
Securities available-for-sale, at fair value	11,371	9,374
State and municipal securities
Securities available for sale [Abstract]
Amortized Cost	20,882	28,480
Gross unrealized gains	200	65
Gross unrealized (losses)	(191)	(632)
Securities available-for-sale, at fair value	20,891	27,913
Securities held to maturity [Abstract]
Amortized Cost	36,886	36,842
Gross unrealized gains	3,284	2,784
Estimated fair value	40,170	39,626
Mortgage-backed securities
Securities available for sale [Abstract]
Amortized Cost	104,274	126,637
Gross unrealized gains	23	17
Gross unrealized (losses)	(1,490)	(2,059)
Securities available-for-sale, at fair value	102,807	124,595
Securities held to maturity [Abstract]
Amortized Cost	4,241	4,687
Gross unrealized gains	69	79
Estimated fair value	4,310	4,766
Asset-backed securities
Securities available for sale [Abstract]
Amortized Cost	21,001	21,620
Gross unrealized (losses)	(407)	(1,147)
Securities available-for-sale, at fair value	20,594	20,473
Other debt securities
Securities held to maturity [Abstract]
Amortized Cost	5,331	5,335
Gross unrealized gains	91	11
Gross unrealized (losses)		(7)
Estimated fair value	$ 5,422	$ 5,339

Securities - Summary of Securit

Securities - Summary of Securities with Unrealized Losses and Length of Time Continuous Loss Positions (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	$ 110,057	$ 142,245
Less than 12 months, Gross unrealized (losses)	(1,716)	(2,737)
12 months or more, Estimated fair value	29,190	24,623
12 months or more, Gross unrealized losses	(537)	(1,251)
Total, Estimated fair value	139,247	166,868
Total, Gross unrealized losses	(2,253)	(3,988)
U. S. government agency securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	9,349	9,374
Less than 12 months, Gross unrealized (losses)	(165)	(143)
Total, Estimated fair value	9,349	9,374
Total, Gross unrealized losses	(165)	(143)
State and municipal securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	10,581	20,279
Less than 12 months, Gross unrealized (losses)	(187)	(632)
12 months or more, Estimated fair value	449
12 months or more, Gross unrealized losses	(4)
Total, Estimated fair value	11,030	20,279
Total, Gross unrealized losses	(191)	(632)
Mortgage-backed securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
Less than 12 months, Estimated fair value	90,127	110,563
Less than 12 months, Gross unrealized (losses)	(1,364)	(1,955)
12 months or more, Estimated fair value	8,147	4,150
12 months or more, Gross unrealized losses	(126)	(104)
Total, Estimated fair value	98,274	114,713
Total, Gross unrealized losses	(1,490)	(2,059)
Asset-backed securities
Available-for-sale securities, continuous unrealized loss position [Abstract]
12 months or more, Estimated fair value	20,594	20,473
12 months or more, Gross unrealized losses	(407)	(1,147)
Total, Estimated fair value	20,594	20,473
Total, Gross unrealized losses	$ (407)	(1,147)
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)

Securities - Additional Informa

Securities - Additional Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017USD ($)
Schedule Of Available For Sale Securities [Line Items]
Unrealized losses in investment securities portfolio	$ 2.3
Public Deposits, Derivative Positions and Federal Home Loan Bank Advances
Schedule Of Available For Sale Securities [Line Items]
Carrying value of securities	$ 137.6

Securities - Summary of Proceed

Securities - Summary of Proceeds from Sales and Calls of Securities and Associated Gains and Losses (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 20, 2016
Investments Debt And Equity Securities [Abstract]
Proceeds	$ 40,181	$ 45,314
Gross gains	91	238
Gross losses	$ (57)	$ (113)

Securities - Summary of Amort36

Securities - Summary of Amortized Cost and Fair Value of Debt and Equity Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Available-for-sale, Amortized cost [Abstract]
Due one to five years	$ 12,103
Due five to ten years	18,073
Due beyond ten years	2,237
Amortized Cost	157,688	$ 186,254
Available-for-sale, Estimated fair value [Abstract]
Due one to five years	12,267
Due five to ten years	17,835
Due beyond ten years	2,160
Estimated fair value	155,663	182,355
Held-to-maturity, Amortized cost [Abstract]
Due one to five years	27,504
Due five to ten years	12,243
Due beyond ten years	2,470
Mortgage-backed securities	4,241
Amortized Cost	46,458	46,864
Securities held to maturity [Abstract]
Due one to five years	29,563
Due five to ten years	13,289
Due beyond ten years	2,740
Mortgage-backed securities	4,310
Estimated fair value	49,902	49,731
Mortgage-backed securities
Available-for-sale, Amortized cost [Abstract]
Amortized cost	104,274
Amortized Cost	104,274	126,637
Available-for-sale, Estimated fair value [Abstract]
Estimated fair value	102,807
Estimated fair value	102,807	124,595
Held-to-maturity, Amortized cost [Abstract]
Amortized Cost	4,241	4,687
Securities held to maturity [Abstract]
Estimated fair value	4,310	4,766
Asset-backed securities
Available-for-sale, Amortized cost [Abstract]
Amortized cost	21,001
Amortized Cost	21,001	21,620
Available-for-sale, Estimated fair value [Abstract]
Estimated fair value	20,594
Estimated fair value	$ 20,594	$ 20,473

Loans and Allowance for Loan 37

Loans and Allowance for Loan Losses - Summary of Loan Portfolio (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Loans And Leases Receivable Disclosure [Line Items]
Total loans	$ 997,176		$ 936,218
Less net unearned income	(559)		(967)
Loans, net of unearned income	996,617		935,251
Allowance for loan losses	(12,454)	$ (13,997)	(11,634)	$ (10,454)	$ (10,299)	$ (10,132)
Loans and leases, net	984,163		923,617
Commercial real estate
Loans And Leases Receivable Disclosure [Line Items]
Total loans	385,758		302,322
Allowance for loan losses	(3,533)	(3,257)	(2,655)	(2,596)	(2,970)	(2,879)
Consumer real estate
Loans And Leases Receivable Disclosure [Line Items]
Total loans	99,751		97,015
Allowance for loan losses	(1,081)	(1,048)	(1,013)	(968)	(963)	(968)
Construction and land development
Loans And Leases Receivable Disclosure [Line Items]
Total loans	62,152		94,491
Allowance for loan losses	(911)	(1,090)	(1,574)	(943)	(799)	(914)
Commercial and industrial
Loans And Leases Receivable Disclosure [Line Items]
Total loans	406,636		379,620
Allowance for loan losses	(6,395)	(8,013)	(5,618)	(5,037)	(4,924)	(4,693)
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Total loans	4,096		5,974
Allowance for loan losses	(57)	(60)	(76)	(104)	(113)	(103)
Other
Loans And Leases Receivable Disclosure [Line Items]
Total loans	38,783		56,796
Allowance for loan losses	$ (477)	$ (529)	$ (698)	$ (806)	$ (530)	$ (575)

Loans and Allowance for Loan 38

Loans and Allowance for Loan Losses - Additional Information (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)Contract	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)Contract	Jun. 30, 2016USD ($)Contract	Dec. 31, 2016USD ($)
Loans And Leases Receivable Disclosure [Line Items]
Minimum loan amount for loans analyzed by credit risk			$ 500,000
Total loans	$ 997,176,000		997,176,000		$ 936,218,000
Interest income recognized on a cash basis for impaired loans	0	$ 0	0	$ 0
Investment in TDR	1,200,000		1,200,000		1,300,000
Specific allowance related to loans	500,000		500,000		500,000
Additional commitments related to TDR	$ 0		$ 0		0
TDR identified during the period | Contract	0		0	1
TDR, payment default within twelve months | Contract	0		0	1
Loan period considered as payment default			30 days
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Total loans	$ 4,096,000		$ 4,096,000		5,974,000
TDR, payment default within twelve months | Contract				1
Allowance for loan and lease losses, specific reserve				$ 0
Subsequent default TDR charge-off				$ 100,000
Troubled Debt Restructurings
Loans And Leases Receivable Disclosure [Line Items]
Specific allowance related to loans	0		0		0
Doubtful
Loans And Leases Receivable Disclosure [Line Items]
Total loans	$ 0		$ 0		$ 0

Loans and Allowance for Loan 39

Loans and Allowance for Loan Losses - Summary of Loan Balances by Category as well as Risk Rating (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 997,176	$ 936,218
Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	3,229	3,619
Performing Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	993,947	932,599
Performing Loans | Pass/Watch
Financing Receivable Recorded Investment [Line Items]
Total loans	970,308	904,836
Performing Loans | Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans	17,841	11,035
Performing Loans | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	5,798	16,728
Commercial real estate
Financing Receivable Recorded Investment [Line Items]
Total loans	385,758	302,322
Commercial real estate | Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	1,260	1,310
Commercial real estate | Performing Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	384,498	301,012
Commercial real estate | Performing Loans | Pass/Watch
Financing Receivable Recorded Investment [Line Items]
Total loans	384,498	301,012
Consumer real estate
Financing Receivable Recorded Investment [Line Items]
Total loans	99,751	97,015
Consumer real estate | Performing Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	99,751	97,015
Consumer real estate | Performing Loans | Pass/Watch
Financing Receivable Recorded Investment [Line Items]
Total loans	99,461	96,722
Consumer real estate | Performing Loans | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	290	293
Construction and land development
Financing Receivable Recorded Investment [Line Items]
Total loans	62,152	94,491
Construction and land development | Performing Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	62,152	94,491
Construction and land development | Performing Loans | Pass/Watch
Financing Receivable Recorded Investment [Line Items]
Total loans	62,152	94,491
Commercial and industrial
Financing Receivable Recorded Investment [Line Items]
Total loans	406,636	379,620
Commercial and industrial | Total Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	1,969	2,309
Commercial and industrial | Performing Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	404,667	377,311
Commercial and industrial | Performing Loans | Pass/Watch
Financing Receivable Recorded Investment [Line Items]
Total loans	381,333	349,857
Commercial and industrial | Performing Loans | Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans	17,841	11,035
Commercial and industrial | Performing Loans | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	5,493	16,419
Consumer
Financing Receivable Recorded Investment [Line Items]
Total loans	4,096	5,974
Consumer | Performing Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	4,096	5,974
Consumer | Performing Loans | Pass/Watch
Financing Receivable Recorded Investment [Line Items]
Total loans	4,081	5,958
Consumer | Performing Loans | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans	15	16
Other
Financing Receivable Recorded Investment [Line Items]
Total loans	38,783	56,796
Other | Performing Loans
Financing Receivable Recorded Investment [Line Items]
Total loans	38,783	56,796
Other | Performing Loans | Pass/Watch
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 38,783	$ 56,796

Loans and Allowance for Loan 40

Loans and Allowance for Loan Losses - Summary of Changes in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	$ 13,997	$ 10,299	$ 11,634	$ 10,132
Charged-off loans	(11,244)	(33)	(12,369)	(807)
Recoveries	11	5	95	9
Provision for loan losses	9,690	183	13,094	1,120
Ending Balance	12,454	10,454	12,454	10,454
Commercial real estate
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	3,257	2,970	2,655	2,879
Charged-off loans				(350)
Provision for loan losses	276	(374)	878	67
Ending Balance	3,533	2,596	3,533	2,596
Consumer real estate
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	1,048	963	1,013	968
Recoveries	1		1
Provision for loan losses	32	5	67
Ending Balance	1,081	968	1,081	968
Construction and land development
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	1,090	799	1,574	914
Provision for loan losses	(179)	144	(663)	29
Ending Balance	911	943	911	943
Commercial and industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	8,013	4,924	5,618	4,693
Charged-off loans	(11,244)	(11)	(12,369)	(311)
Recoveries		4	3	8
Provision for loan losses	9,626	120	13,143	647
Ending Balance	6,395	5,037	6,395	5,037
Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	60	113	76	103
Charged-off loans		(22)		(146)
Recoveries	10	1	91	1
Provision for loan losses	(13)	12	(110)	146
Ending Balance	57	104	57	104
Other
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	529	530	698	575
Provision for loan losses	(52)	276	(221)	231
Ending Balance	$ 477	$ 806	$ 477	$ 806

Loans and Allowance for Loan 41

Loans and Allowance for Loan Losses - Summary of Breakdown of Allowance for Loan Losses and Loan Portfolio by Loan Category (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Allowance for Loan Losses:
Collectively evaluated for impairment	$ 11,954		$ 11,134
Individually evaluated for impairment	500		500
Allowance for Loan Losses, Ending Balance	12,454	$ 13,997	11,634	$ 10,454	$ 10,299	$ 10,132
Loans:
Collectively evaluated for impairment	993,947		932,599
Individually evaluated for impairment	3,229		3,619
Total	997,176		936,218
Commercial real estate
Allowance for Loan Losses:
Collectively evaluated for impairment	3,533		2,655
Individually evaluated for impairment	0
Allowance for Loan Losses, Ending Balance	3,533	3,257	2,655	2,596	2,970	2,879
Loans:
Collectively evaluated for impairment	384,498		301,012
Individually evaluated for impairment	1,260		1,310
Total	385,758		302,322
Consumer real estate
Allowance for Loan Losses:
Collectively evaluated for impairment	1,081		1,013
Individually evaluated for impairment	0
Allowance for Loan Losses, Ending Balance	1,081	1,048	1,013	968	963	968
Loans:
Collectively evaluated for impairment	99,751		97,015
Individually evaluated for impairment			0
Total	99,751		97,015
Construction and land development
Allowance for Loan Losses:
Collectively evaluated for impairment	911		1,574
Individually evaluated for impairment	0
Allowance for Loan Losses, Ending Balance	911	1,090	1,574	943	799	914
Loans:
Collectively evaluated for impairment	62,152		94,491
Individually evaluated for impairment			0
Total	62,152		94,491
Commercial and industrial
Allowance for Loan Losses:
Collectively evaluated for impairment	5,895		5,118
Individually evaluated for impairment	500		500
Allowance for Loan Losses, Ending Balance	6,395	8,013	5,618	5,037	4,924	4,693
Loans:
Collectively evaluated for impairment	404,667		377,311
Individually evaluated for impairment	1,969		2,309
Total	406,636		379,620
Consumer
Allowance for Loan Losses:
Collectively evaluated for impairment	57		76
Individually evaluated for impairment	0
Allowance for Loan Losses, Ending Balance	57	60	76	104	113	103
Loans:
Collectively evaluated for impairment	4,096		5,974
Individually evaluated for impairment			0
Total	4,096		5,974
Other
Allowance for Loan Losses:
Collectively evaluated for impairment	477		698
Individually evaluated for impairment	0
Allowance for Loan Losses, Ending Balance	477	$ 529	698	$ 806	$ 530	$ 575
Loans:
Collectively evaluated for impairment	38,783		56,796
Individually evaluated for impairment			0
Total	$ 38,783		$ 56,796

Loans and Allowance for Loan 42

Loans and Allowance for Loan Losses - Allocation of ALL with Corresponding Percentage of ALL in Each Category to Total Loans, Net of Deferred Fee (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan losses, Amount	$ 12,454	$ 13,997	$ 11,634	$ 10,454	$ 10,299	$ 10,132
Allowance for loan losses, Percentage of total loans, net of deferred fees	1.25%		1.24%
Commercial real estate
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan losses, Amount	$ 3,533	3,257	$ 2,655	2,596	2,970	2,879
Allowance for loan losses, Percentage of total loans, net of deferred fees	0.35%		0.28%
Consumer real estate
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan losses, Amount	$ 1,081	1,048	$ 1,013	968	963	968
Allowance for loan losses, Percentage of total loans, net of deferred fees	0.11%		0.11%
Construction and land development
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan losses, Amount	$ 911	1,090	$ 1,574	943	799	914
Allowance for loan losses, Percentage of total loans, net of deferred fees	0.09%		0.17%
Commercial and industrial
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan losses, Amount	$ 6,395	8,013	$ 5,618	5,037	4,924	4,693
Allowance for loan losses, Percentage of total loans, net of deferred fees	0.64%		0.60%
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan losses, Amount	$ 57	60	$ 76	104	113	103
Allowance for loan losses, Percentage of total loans, net of deferred fees	0.01%		0.01%
Other
Loans And Leases Receivable Disclosure [Line Items]
Allowance for loan losses, Amount	$ 477	$ 529	$ 698	$ 806	$ 530	$ 575
Allowance for loan losses, Percentage of total loans, net of deferred fees	0.05%		0.07%

Loans and Allowance for Loan 43

Loans and Allowance for Loan Losses - Summary of Impaired Loans Evaluated for Specific Loss Allowance (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment	$ 1,260	$ 1,310
Impaired loans with no related allowance recorded, Unpaid principal balance	1,672	1,686
Impaired loans with an allowance recorded, Related allowance	500	500
Impaired loans with an allowance recorded, Recorded investment	1,969	2,309
Impaired loans with an allowance recorded, Unpaid principal balance	2,770	2,921
Recorded investment	3,229	3,619
Unpaid principal balance	4,442	4,607
Commercial real estate
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded investment	1,260	1,310
Impaired loans with no related allowance recorded, Unpaid principal balance	1,672	1,686
Commercial and industrial
Financing Receivable Impaired [Line Items]
Impaired loans with an allowance recorded, Related allowance	500	500
Impaired loans with an allowance recorded, Recorded investment	1,969	2,309
Impaired loans with an allowance recorded, Unpaid principal balance	$ 2,770	$ 2,921

Loans and Allowance for Loan 44

Loans and Allowance for Loan Losses - Summary of Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Average recorded investment	$ 1,278	$ 5,863	$ 1,286	$ 6,297
Impaired loans with no related allowance recorded, Interest income recognized				13
Impaired loans with an allowance recorded, Average recorded investment	2,194		2,242
Average recorded investment	3,472	5,863	3,528	6,297
Interest income recognized				13
Commercial real estate
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Average recorded investment	1,278	1,598	1,286	1,771
Consumer real estate
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Average recorded investment		789		930
Impaired loans with no related allowance recorded, Interest income recognized				13
Commercial and industrial
Financing Receivable Impaired [Line Items]
Impaired loans with no related allowance recorded, Average recorded investment		$ 3,476		$ 3,596
Impaired loans with an allowance recorded, Average recorded investment	$ 2,194		$ 2,242

Loans and Allowance for Loan 45

Loans and Allowance for Loan Losses - Schedule of Aging of Recorded Investment in Past-due Loans, by Class of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 2,914	$ 363
Loans Not Past Due	994,262	935,855
Total	997,176	936,218
Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	364
Loans Not Past Due	385,394	302,322
Total	385,758	302,322
Consumer real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	418	363
Loans Not Past Due	99,333	96,652
Total	99,751	97,015
Construction and land development
Financing Receivable Recorded Investment Past Due [Line Items]
Loans Not Past Due	62,152	94,491
Total	62,152	94,491
Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,117
Loans Not Past Due	404,519	379,620
Total	406,636	379,620
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	15
Loans Not Past Due	4,081	5,974
Total	4,096	5,974
Other
Financing Receivable Recorded Investment Past Due [Line Items]
Loans Not Past Due	38,783	56,796
Total	38,783	56,796
30 - 59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,899	81
30 - 59 Days Past Due [Member] | Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	364
30 - 59 Days Past Due [Member] | Consumer real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	418	81
30 - 59 Days Past Due [Member] | Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,117
60 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		282
60 - 89 Days Past Due [Member] | Consumer real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 282
Greater than 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	15
Greater than 89 Days Past Due [Member] | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 15

Loans and Allowance for Loan 46

Loans and Allowance for Loan Losses - Schedule of Non-Accrual Loans, Past Due Loans over 90 Days Outstanding and Accruing and Troubled Debt Restructurings (TDR) by Class of Loans (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual	$ 3,229	$ 3,619
Past Due Over 90 Days and Accruing	15
Troubled Debt Restructurings	1,239	1,272
Commercial real estate
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual	1,260	1,310
Troubled Debt Restructurings	1,239	1,272
Commercial and industrial
Accounts Notes And Loans Receivable [Line Items]
Non-Accrual	1,969	$ 2,309
Consumer
Accounts Notes And Loans Receivable [Line Items]
Past Due Over 90 Days and Accruing	$ 15

Loans and Allowance for Loan 47

Loans and Allowance for Loan Losses - Schedule of Loans by Class Modified as TDR (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017Contract	Jun. 30, 2017Contract	Jun. 30, 2016USD ($)Contract
Financing Receivable Modifications [Line Items]
Number of contracts | Contract	0	0	1
Pre modification outstanding recorded investment			$ 1,948
Post modification outstanding recorded investment, net of related allowance			$ 1,170
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

Loans and Allowance for Loan 48

Loans and Allowance for Loan Losses - Schedule of Loans by Class Modified as TDR for Which There Was Payment Default Within Twelve Months Following Modification (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017Contract	Jun. 30, 2017Contract	Jun. 30, 2016USD ($)Contract
Financing Receivable Modifications [Line Items]
Number of contracts | Contract	0	0	1
Recorded investment | $			$ 124
Consumer
Financing Receivable Modifications [Line Items]
Number of contracts | Contract			1
Recorded investment | $			$ 124

Federal Home Loan Bank Advanc49

Federal Home Loan Bank Advances - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Federal Home Loan Bank Advances [Line Items]
Outstanding borrowings	$ 105,000	$ 55,000
Investment securities, FHLB stock and commercial and residential real estate mortgage loans
Federal Home Loan Bank Advances [Line Items]
Mortgage loans collateralized amount	388,000
Amount of available credit	$ 80,700

Federal Home Loan Bank Advanc50

Federal Home Loan Bank Advances - Summary of Contractual Maturities and Average Effective Rates of Outstanding Advances (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Federal Home Loan Bank Advances Maturities Summary [Abstract]
2,017	$ 85,000
2,017		$ 55,000
2,018	20,000
Total amount	$ 105,000	$ 55,000
2,017	1.20%	0.80%
2,018	1.47%
Total interest rates	1.25%	0.80%

Accumulated Other Comprehensi51

Accumulated Other Comprehensive Income (Loss) - Summary of Changes In Accumulated Other Comprehensive Income (Loss) By Component, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			$ 139,207	$ 108,586
Other comprehensive income (loss) before reclassification, net of tax			1,047	1,066
Amounts reclassified from accumulated other comprehensive income (loss), net of tax			343	147
Other comprehensive income	$ 852	$ 733	1,390	1,213
Ending balance	138,030	114,318	138,030	114,318
Gains and Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(4,241)	(3,704)
Other comprehensive income (loss) before reclassification, net of tax			(131)	(1,139)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax			313	173
Other comprehensive income			182	(966)
Ending balance	(4,059)	(4,670)	(4,059)	(4,670)
Unrealized Gains and Losses on Available for Sale Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(698)	105
Other comprehensive income (loss) before reclassification, net of tax			1,178	2,205
Amounts reclassified from accumulated other comprehensive income (loss), net of tax			(21)	(77)
Other comprehensive income			1,157	2,128
Ending balance	459	2,233	459	2,233
Unrealized Losses on Securities Transferred to Held to Maturity
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(1,212)	(1,315)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax			51	51
Other comprehensive income			51	51
Ending balance	(1,161)	(1,264)	(1,161)	(1,264)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance			(6,151)	(4,914)
Other comprehensive income			1,390	1,213
Ending balance	$ (4,761)	$ (3,701)	$ (4,761)	$ (3,701)

Accumulated Other Comprehensi52

Accumulated Other Comprehensive Income (Loss) - Summary of Significant Amounts Reclassified out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Net (gain) loss on sale of securities			$ (34)	$ (125)
Interest expense - Federal Home Loan Bank advances	$ 379	$ 92	519	183
Income tax expense (benefit)	(1,328)	1,159	(1,375)	1,956
Net of tax	3,342	(2,476)	3,010	(4,060)
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	108	38	213	75
Interest expense - Federal Home Loan Bank advances	50	50	100	98
Net of tax	158	88	313	173
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) loss on sale of securities	(40)	(86)	(34)	(125)
Income tax expense (benefit)	15	33	13	48
Net of tax	(25)	(53)	(21)	(77)
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	42	42	83	83
Income tax expense (benefit)	(16)	(16)	(32)	(32)
Net of tax	$ 26	$ 26	$ 51	$ 51

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Taxes [Line Items]
Effective tax rate	28.40%	31.90%	31.40%	32.50%
Income tax expense	$ (21,000)		$ (167,000)
Federal statutory income tax rate	34.00%	34.00%	34.00%	34.00%
Tennessee | State and Local Jurisdiction
Income Taxes [Line Items]
Excise tax rate	6.50%	6.50%	6.50%	6.50%

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Financial Instruments Representing Credit Risk (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Commitments And Contingencies Disclosure [Abstract]
Unused commitments to extend credit	$ 564,569	$ 508,990
Standby letters of credit	12,132	10,886
Total	$ 576,701	$ 519,876

Derivatives - Additional Inform

Derivatives - Additional Information (Details) - Designated as Hedging Instrument - Interest Rate Swaps - Cash Flow Hedges - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Notional amounts	$ 20,000,000	$ 20,000,000
Investment securities pledged collateral to counterparties	2,800,000
Investment securities pledged collateral from counterparties	$ 0

Derivatives - Summary of Intere

Derivatives - Summary of Interest-Rate Swaps Designated as Cash Flow Hedges (Details) - Designated as Hedging Instrument - Cash Flow Hedges - Interest Rate Swaps - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Notional amounts	$ 20,000,000	$ 20,000,000
Weighted average pay rates	3.54%	3.54%
Weighted average receive rates	Jun. 30, 2017: 3 month LIBOR and Dec. 31, 2016: 3 month LIBOR
Weighted average maturity	6 years	6 years 6 months
Fair value	$ (1,747,000)	$ (1,535,000)
Amount of unrealized loss recognized in accumulated other comprehensive income, net of tax	$ (1,078,000)	$ (947,000)

Derivatives - Summary of Custom

Derivatives - Summary of Customer Related Interest Rate Swaps (Details) - Interest Rate Swaps - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Interest rate swap, Notional amount	$ 94,850,000	$ 82,508,000
Pay fixed/receive variable swaps
Derivative [Line Items]
Interest rate swap, Notional amount	47,425,000	41,254,000
Interest rate swap, Estimated fair value	(331,000)	(460,000)
Pay variable/receive fixed swaps
Derivative [Line Items]
Interest rate swap, Notional amount	47,425,000	41,254,000
Interest rate swap, Estimated fair value	$ 331,000	$ 460,000

Stock Options and Restricted 58

Stock Options and Restricted Shares - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost	$ 1.4
Total fair value of shares vested	$ 0.6	$ 0.3
Vesting period	3 years
Contractual term	10 years
Expected dividend yield	0.00%
Options granted	0
Unrecognized compensation cost	$ 0.1
Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cost expected to be recognized over a weighted-average period	1 year 9 months 18 days
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 1 month 6 days
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 share and stock option grants	192,391

Stock Options and Restricted 59

Stock Options and Restricted Shares - Summary of Company Recognized Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-based compensation expense before income taxes	$ 248	$ 235	$ 484	$ 431
Less: deferred tax benefit	(95)	(90)	(185)	(165)
Reduction of net income	$ 153	$ 145	$ 299	$ 266

Stock Options and Restricted 60

Stock Options and Restricted Shares - Summary of Changes in Company's Nonvested Restricted Shares (Details)	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Restricted Shares, Abstract
Restricted Shares, Nonvested Beginning Balance | shares	199,641
Restricted Shares, Granted | shares	15,633
Restricted Shares, Vested | shares	(46,869)
Restricted Shares, Forfeited | shares	(2,300)
Restricted Shares, Nonvested Ending Balance | shares	166,105
Weighted Average Grant Date Fair Value, Abstract
Weighted Average Grant Date Fair Value, Nonvested Beginning Balance | $ / shares	$ 12.34
Weighted Average Grant Date Fair Value, Granted | $ / shares	19.19
Weighted Average Grant Date Fair Value, Vested | $ / shares	12.24
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	13.22
Weighted Average Grant Date Fair Value, Nonvested Ending Balance | $ / shares	$ 13

Stock Options and Restricted 61

Stock Options and Restricted Shares - Summary of Fair Value of Options Granted Using Weighted Average Assumptions (Details)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Expected dividend yield	0.00%
Expected term (in years)	0 years	7 years 5 months 23 days
Expected stock price volatility		17.20%
Risk-free interest rate		1.66%
Pre-vest forfeiture rate		10.25%

Stock Options and Restricted 62

Stock Options and Restricted Shares - Summary of Activity in Stock Options (Details)	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Shares, Abstract
Shares Outstanding, Beginning Balance	1,006,000
Shares Outstanding, Granted	0
Shares Outstanding, Exercised	(25,750)
Shares Outstanding, Ending Balance	980,250
Shares, Fully Vested and Expected to Vest	973,694
Shares, Exercisable at End of Period	931,500
Weighted Average Exercise Price, Abstract
Weighted Average Exercise Price Outstanding, Beginning Balance | $ / shares	$ 10.48
Weighted Average Exercise Price Outstanding, Exercised | $ / shares	10
Weighted Average Exercise Price Outstanding, Ending Balance | $ / shares	10.49
Weighted Average Exercise Price, Fully vested and expected to vest | $ / shares	10.48
Weighted Average Exercise Price, Exercisable at End of Period | $ / shares	$ 10.41
Weighted Average Remaining Contractual Term (year), Abstract
Weighted Average Remaining Contractual Term Outstanding	2 years 8 months 12 days
Weighted Average Remaining Contractual Term, Fully Vested and Expected to Vest	2 years 7 months 6 days
Weighted Average Remaining Contractual Term, Exercisable at End of Period	2 years 4 months 24 days

Stock Options and Restricted 63

Stock Options and Restricted Shares - Information Related to Stock Options (Details) - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Intrinsic value of options exercised	$ 240,570
Cash received from option exercises	257,500
Tax benefit realized from option exercises	$ 92,114
Weighted average fair value of options granted		$ 3.16

Regulatory Capital Requiremen64

Regulatory Capital Requirements - Schedule of Capital Amounts and Ratios (Details) - USD ($) $ in Thousands		Jun. 30, 2017	Dec. 31, 2016
CapStar Financial Holdings, Inc.
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital to risk-weighted assets, actual amount		$ 148,052	$ 149,616
Tier I capital to risk-weighted assets, actual amount		135,525	137,909
Tier I capital to average assets, actual amount		$ 135,525	$ 137,909
Total capital to risk-weighted assets, actual ratio		11.51%	12.60%
Tier I capital to risk-weighted assets, actual ratio		10.54%	11.61%
Tier I capital to average assets, actual ratio		9.77%	10.46%
Total capital to risk-weighted assets, minimum capital requirement amount	[1]	$ 102,861	$ 95,028
Tier I capital to risk-weighted assets, minimum capital requirement amount	[1]	77,145	71,271
Tier I capital to average assets, minimum capital requirement amount	[1]	$ 55,498	$ 52,727
Total capital to risk-weighted assets, minimum capital requirement ratio	[1]	8.00%	8.00%
Tier I capital to risk-weighted assets, minimum capital requirement ratio	[1]	6.00%	6.00%
Tier I capital to average assets, minimum capital requirement ratio	[1]	4.00%	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		$ 126,817	$ 129,528
Tier I capital to risk-weighted assets, actual ratio		9.86%	10.90%
Tier I capital to risk-weighted assets, minimum capital requirement amount	[1]	$ 57,859	$ 53,453
Tier I capital to risk-weighted assets, minimum capital requirement ratio	[1]	4.50%	4.50%
CapStar Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital to risk-weighted assets, actual amount		$ 135,219	$ 126,718
Tier I capital to risk-weighted assets, actual amount		122,692	115,011
Tier I capital to average assets, actual amount		$ 122,692	$ 115,011
Total capital to risk-weighted assets, actual ratio		10.52%	10.67%
Tier I capital to risk-weighted assets, actual ratio		9.54%	9.68%
Tier I capital to average assets, actual ratio		8.85%	8.72%
Total capital to risk-weighted assets, minimum capital requirement amount	[1]	$ 102,860	$ 95,028
Tier I capital to risk-weighted assets, minimum capital requirement amount	[1]	77,145	71,271
Tier I capital to average assets, minimum capital requirement amount	[1]	$ 55,481	$ 52,727
Total capital to risk-weighted assets, minimum capital requirement ratio	[1]	8.00%	8.00%
Tier I capital to risk-weighted assets, minimum capital requirement ratio	[1]	6.00%	6.00%
Tier I capital to average assets, minimum capital requirement ratio	[1]	4.00%	4.00%
Total capital to risk-weighted assets, minimum to be well capitalized amount	[2]	$ 128,575	$ 118,785
Tier I capital to risk-weighted assets, minimum to be well capitalized amount	[2]	102,860	95,028
Tier I capital to average assets, minimum to be well capitalized amount	[2]	$ 69,351	$ 65,909
Total capital to risk-weighted assets, minimum to be well capitalized ratio	[2]	10.00%	10.00%
Tier I capital to risk-weighted assets, minimum to be well capitalized ratio	[2]	8.00%	8.00%
Tier I capital to average assets, minimum to be well capitalized ratio	[2]	5.00%	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		$ 106,484	$ 99,130
Tier I capital to risk-weighted assets, actual ratio		8.28%	8.35%
Tier I capital to risk-weighted assets, minimum capital requirement amount	[1]	$ 57,859	$ 53,453
Tier I capital to risk-weighted assets, minimum capital requirement ratio	[1]	4.50%	4.50%
Tier I capital to risk-weighted assets, minimum to be well capitalized amount	[2]	$ 83,573	$ 77,210
Tier I capital to risk-weighted assets, minimum to be well capitalized ratio	[2]	6.50%	6.50%
[1]	For the calendar year 2017, the Company must maintain a capital conservation buffer of Tier 1 common equity capital in excess of minimum risk-based capital ratios by at least 1.25% to avoid limits on capital distributions and certain discretionary bonus payments to executive officers and similar employees.
[2]	For the Company to be well-capitalized, the Bank must be well-capitalized and the Company must not be subject to any written agreement, order, capital directive, or prompt corrective action directive issued by the Federal Reserve to meet and maintain a specific capital level for any capital measure.

Regulatory Capital Requiremen65

Regulatory Capital Requirements - Schedule of Capital Amounts and Ratios (Parenthetical) (Details)	Jun. 30, 2017
Banking And Thrift [Abstract]
Minimum risk based capital ratios	1.25%

Earning Per Share - Summary of

Earning Per Share - Summary of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Basic net income (loss) per share calculation:
Numerator – Net income (loss)	$ (3,342)	$ 2,476	$ (3,010)	$ 4,060
Denominator – Average common shares outstanding	11,226,216	8,682,438	11,218,624	8,655,561
Basic net income (loss) per share of common stock	$ (0.30)	$ 0.29	$ (0.27)	$ 0.47
Diluted net income (loss) per share calculation:
Numerator – Net income (loss)	$ (3,342)	$ 2,476	$ (3,010)	$ 4,060
Denominator – Average common shares outstanding	11,226,216	8,682,438	11,218,624	8,655,561
Dilutive shares contingently issuable	1,513,888	1,993,478	1,543,365	1,968,443
Average diluted common shares outstanding	12,740,104	10,675,916	12,761,989	10,624,004
Diluted net income (loss) per share of common stock	$ (0.26)	$ 0.23	$ (0.24)	$ 0.38

Fair Value - Additional Informa

Fair Value - Additional Information (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Other real estate owned	$ 0	$ 0
Loans held for sale carried at fair value	$ 0	$ 0

Fair Value - Summary of Assets

Fair Value - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets:
Total securities available for sale	$ 155,663	$ 182,355
Obligations of States and Political Subdivisions
Assets:
Total securities available for sale	20,891	27,913
Asset-backed securities
Assets:
Total securities available for sale	20,594	20,473
Fair Value Measurements Recurring Basis
Assets:
Total securities available for sale	155,663	182,355
Liabilities:
Total derivatives	(2,168)	(1,995)
Fair Value Measurements Recurring Basis | U.S. Government-sponsored Agencies
Assets:
Total securities available for sale	11,371	9,374
Fair Value Measurements Recurring Basis | Obligations of States and Political Subdivisions
Assets:
Total securities available for sale	20,891	27,913
Fair Value Measurements Recurring Basis | Mortgage-backed Securities-residential
Assets:
Total securities available for sale	102,807	124,595
Fair Value Measurements Recurring Basis | Asset-backed securities
Assets:
Total securities available for sale	20,594	20,473
Fair Value Measurements Recurring Basis | Interest Rate Swaps - Customer Related
Assets:
Interest rate swaps - customer related	421	460
Liabilities:
Total derivatives	(421)	(460)
Fair Value Measurements Recurring Basis | Interest Rate Swaps - Cash Flow Hedges
Liabilities:
Total derivatives	(1,747)	(1,535)
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2)
Assets:
Total securities available for sale	155,663	182,355
Liabilities:
Total derivatives	(2,168)	(1,995)
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | U.S. Government-sponsored Agencies
Assets:
Total securities available for sale	11,371	9,374
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | Obligations of States and Political Subdivisions
Assets:
Total securities available for sale	20,891	27,913
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed Securities-residential
Assets:
Total securities available for sale	102,807	124,595
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | Asset-backed securities
Assets:
Total securities available for sale	20,594	20,473
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | Interest Rate Swaps - Customer Related
Assets:
Interest rate swaps - customer related	421	460
Liabilities:
Total derivatives	(421)	(460)
Fair Value Measurements Recurring Basis | Significant Other Observable Inputs (Level 2) | Interest Rate Swaps - Cash Flow Hedges
Liabilities:
Total derivatives	$ (1,747)	$ (1,535)

Fair Value - Summary of Asset69

Fair Value - Summary of Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - Commercial and industrial - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets:
Impaired loans	$ 1,469	$ 1,809
Significant Unobservable Inputs (Level 3)
Assets:
Impaired loans	$ 1,469	$ 1,809

Fair Value - Summary of Quantit

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] - Commercial and industrial - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	$ 1,469	$ 1,809
Level 3 Fair Value Measurements
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans	$ 1,469	$ 1,809
Valuation Technique(s)	Jun. 30, 2017: Sales comparison approach and Dec. 31, 2016: Sales comparison approach
Unobservable Input(s)	Jun. 30, 2017: Appraisal discounts and Dec. 31, 2016: Appraisal discounts
Range (Weighted-Average)	25.00%	25.00%

Fair Value - Summary of Carryin

Fair Value - Summary of Carrying Value and Fair Values of the Bank's Financial Instruments (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Financial assets:
Securities available for sale	$ 155,663,000	$ 182,355,000
Securities held to maturity, fair value	49,902,000	49,731,000
Loans held for sale	0	0
Carrying amount
Financial assets:
Restricted equity securities	8,292,000	6,032,000
Carrying amount | Level 1
Financial assets:
Cash and due from banks, interest-bearing deposits in financial institutions	48,093,000	63,456,000
Federal funds sold		16,654,000
Carrying amount | Level 2
Financial assets:
Securities available for sale	155,663,000	182,355,000
Securities held to maturity, fair value	46,458,000	46,864,000
Loans held for sale	73,573,000	42,111,000
Accrued interest receivable	3,571,000	3,942,000
Bank owned life insurance	22,189,000	21,900,000
Other assets	421,000	460,000
Financial liabilities:
Federal Home Loan Bank advances	105,000,000	55,000,000
Accrued interest payable	286,000	212,000
Carrying amount | Level 3 Fair Value Measurements
Financial assets:
Loans, net	996,617,000	935,251,000
Financial liabilities:
Deposits	1,120,985,000	1,128,723,000
Other liabilities	4,057,000	5,349,000
Fair value | Level 1
Financial assets:
Cash and due from banks, interest-bearing deposits in financial institutions	48,093,000	63,456,000
Federal funds sold		16,654,000
Fair value | Level 2
Financial assets:
Securities available for sale	155,663,000	182,355,000
Securities held to maturity, fair value	49,902,000	49,731,000
Loans held for sale	75,608,000	42,302,000
Accrued interest receivable	3,571,000	3,942,000
Bank owned life insurance	22,189,000	21,900,000
Other assets	421,000	460,000
Financial liabilities:
Federal Home Loan Bank advances	104,985,000	54,989,000
Accrued interest payable	286,000	212,000
Fair value | Level 3 Fair Value Measurements
Financial assets:
Loans, net	995,565,000	934,628,000
Financial liabilities:
Deposits	1,082,708,000	1,088,758,000
Other liabilities	$ 4,057,000	$ 5,349,000