Franklin Financial Network (FSB) 10-Q 9 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 31, 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	FSB
Entity Registrant Name	FRANKLIN FINANCIAL NETWORK INC.
Entity Central Index Key	1,407,067
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		13,183,340

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
ASSETS
Cash and due from financial institutions	$ 96,741	$ 90,927
Certificates of deposit at other financial institutions	2,530	1,055
Securities available for sale	1,021,051	754,755
Securities held to maturity (fair value 2017-$224,646 and 2016-$227,892)	222,355	228,894
Loans held for sale, at fair value	11,724	23,699
Loans	2,011,955	1,773,592
Allowance for loan losses	(18,689)	(16,553)
Net loans	1,993,266	1,757,039
Restricted equity securities, at cost	17,326	11,843
Premises and equipment, net	10,886	9,551
Accrued interest receivable	11,217	9,931
Bank owned life insurance	23,577	23,267
Deferred tax asset	13,255	15,013
Foreclosed assets	1,350	0
Servicing rights, net	3,581	3,621
Goodwill	9,124	9,124
Core deposit intangible, net	1,232	1,480
Other assets	4,378	2,990
Total assets	3,443,593	2,943,189
Deposits
Non-interest bearing	255,264	233,781
Interest bearing	2,499,161	2,158,037
Total deposits	2,754,425	2,391,818
Federal Home Loan Bank advances	287,000	132,000
Federal funds purchased and repurchase agreements	42,082	83,301
Subordinated notes, net	58,426	58,337
Accrued interest payable	2,571	1,924
Other liabilities	6,068	5,448
Total liabilities	3,150,572	2,672,828
Equity
Preferred stock, no par value: 1,000,000 shares authorized; no shares outstanding at June 30, 2017 and December 31, 2016
Common stock, no par value: 30,000,000 and 20,000,000 shares authorized at June 30, 2017 and December 31, 2016, respectively; 13,181,501 and 13,036,954 issued at June 30, 2017 and December 31, 2016, respectively	220,620	218,354
Retained earnings	76,186	59,386
Accumulated other comprehensive loss	(3,888)	(7,482)
Total shareholders' equity	292,918	270,258
Noncontrolling interest in consolidated subsidiary	103	103
Total equity	293,021	270,361
Total liabilities and equity	$ 3,443,593	$ 2,943,189

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Held-to-maturity securities, fair value	$ 224,646	$ 227,892
Preferred stock, no par value
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares outstanding	0	0
Common stock, no par value
Common stock shares authorized	30,000,000	20,000,000
Common stock shares issued	13,181,501	13,036,954

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest income and dividends
Loans, including fees	$ 24,662	$ 18,930	$ 47,222	$ 36,672
Securities:
Taxable	5,700	3,985	11,317	7,513
Tax-Exempt	2,212	1,197	4,232	2,319
Dividends on restricted equity securities	213	118	394	221
Federal funds sold and other	224	56	387	122
Total interest income	33,011	24,286	63,552	46,847
Interest expense
Deposits	6,561	3,358	11,807	6,435
Federal funds purchased and repurchase agreements	147	82	217	168
Federal Home Loan Bank advances	752	187	1,260	296
Subordinated notes and other borrowings	1,082	725	2,156	738
Total interest expense	8,542	4,352	15,440	7,637
Net interest income	24,469	19,934	48,112	39,210
Provision for loan losses	573	1,567	2,428	2,703
Net interest income after provision for loan losses	23,896	18,367	45,684	36,507
Noninterest income
Service charges on deposit accounts	45	46	75	95
Other service charges and fees	758	767	1,510	1,400
Net gains on sale of loans	2,067	2,309	4,401	3,917
Wealth management	648	529	1,241	897
Loan servicing fees, net	53	(4)	160	38
Gain on sale or call of securities	120	795	120	1,105
Net gain on sale of foreclosed assets	3	3	6	6
Other	186	181	375	253
Total noninterest income	3,880	4,626	7,888	7,711
Noninterest expense
Salaries and employee benefits	9,128	7,603	17,161	14,120
Occupancy and equipment	2,195	1,755	4,290	3,562
FDIC assessment expense	1,015	405	1,775	818
Marketing	285	188	552	405
Professional fees	702	977	1,737	2,071
Amortization of core deposit intangible	121	144	248	293
Other	1,837	1,841	3,796	3,475
Total noninterest expense	15,283	12,913	29,559	24,744
Income before income tax expense	12,493	10,080	24,013	19,474
Income tax expense	3,619	2,572	7,205	5,733
Net income	8,874	7,508	16,808	13,741
Earnings attributable to noncontrolling interest	(8)		(8)
Dividends paid on Series A preferred stock				(23)
Net income available to common shareholders	$ 8,866	$ 7,508	$ 16,800	$ 13,718
Earnings per share:
Basic	$ 0.68	$ 0.70	$ 1.28	$ 1.29
Diluted	$ 0.64	$ 0.66	$ 1.22	$ 1.22

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 8,874	$ 7,508	$ 16,808	$ 13,741
Unrealized gains on securities:
Unrealized holding gain arising during the period	6,671	6,514	6,031	17,574
Reclassification adjustment for gains included in net income	(120)	(795)	(120)	(1,105)
Net unrealized gains	6,551	5,719	5,911	16,469
Tax effect	(2,569)	(2,243)	(2,317)	(6,460)
Total other comprehensive income	3,982	3,476	3,594	10,009
Comprehensive income	$ 12,856	$ 10,984	$ 20,402	$ 23,750

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Series A Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Retained Earnings [Member]Series A Preferred Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2015	$ 188,816	$ 10,000	$ 147,784	$ 31,352		$ (320)
Beginning balance, shares at Dec. 31, 2015			10,571,377
Redemption of Series A preferred stock		$ (10,000)
Exercise of common stock options, net	975		$ 975
Exercise of common stock options, net, number of shares			87,710
Exercise of common stock warrants	$ 45		$ 45
Exercise of common stock warrants, number of shares	3,775		3,775
Dividends paid on Series A preferred stock	$ (23)				$ (23)
Stock based compensation expense, net of restricted share forfeitures	795		$ 795
Stock based compensation expense, net of restricted share forfeitures, shares			30,564
Stock issued (divestment) in conjunction with 401(k) employer match, net of distributions	(82)		$ (82)
Stock issued in conjunction with 401(k) employer match, net of distributions, number of shares			(3,945)
Net income	13,741			13,741
Other comprehensive income	10,009					10,009
Ending balance at Jun. 30, 2016	204,276		$ 149,517	45,070		9,689
Ending balance, shares at Jun. 30, 2016			10,689,481
Beginning balance at Dec. 31, 2016	270,361		$ 218,354	59,386		(7,482)	$ 103
Beginning balance, shares at Dec. 31, 2016			13,036,954
Exercise of common stock options, net	1,055		$ 1,055
Exercise of common stock options, net, number of shares			109,663
Exercise of common stock warrants	$ 150		$ 150
Exercise of common stock warrants, number of shares	12,461		12,461
Stock based compensation expense, net of restricted share forfeitures	$ 1,235		$ 1,235
Stock based compensation expense, net of restricted share forfeitures, shares			26,911
Stock issued (divestment) in conjunction with 401(k) employer match, net of distributions	(174)		$ (174)
Stock issued in conjunction with 401(k) employer match, net of distributions, number of shares			(4,488)
Earnings attributable to noncontrolling interest	(8)			(8)
Net income	16,808			16,808
Other comprehensive income	3,594					3,594
Ending balance at Jun. 30, 2017	$ 293,021		$ 220,620	$ 76,186		$ (3,888)	$ 103
Ending balance, shares at Jun. 30, 2017			13,181,501

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities
Net income	$ 16,808	$ 13,741
Adjustments to reconcile net income to net cash from operating activities
Depreciation and amortization on premises and equipment	741	652
Accretion of purchase accounting adjustments	(714)	(635)
Net amortization of securities	4,998	3,364
Amortization of loan servicing right asset	479	556
Amortization of core deposit intangible	248	293
Amortization of debt issuance costs	89	34
Provision for loan losses	2,428	2,703
Deferred income tax benefit	(558)	(204)
Origination of loans held for sale	(175,918)	(148,829)
Proceeds from sale of loans held for sale	191,855	149,425
Net gain on sale of loans	(4,401)	(3,917)
Gain on sale of available for sale securities	(120)	(1,105)
Income from bank owned life insurance	(310)	(323)
Loss on sale of assets held for sale		98
Stock-based compensation	1,235	795
Compensation expense related to common stock issued to 401(k) plan		269
Deferred gain on sale of loans	(58)	(38)
Deferred gain on sale of foreclosed assets	(6)	(6)
Net change in:
Accrued interest receivable and other assets	(2,674)	(1,509)
Accrued interest payable and other liabilities	1,331	(970)
Net cash from operating activities	35,453	14,394
Securities available for sale :
Sales	61,190	62,263
Purchases	(394,219)	(185,270)
Maturities, prepayments and calls	68,721	37,234
Securities held to maturity :
Purchases	(1,996)	(82,405)
Maturities, prepayments and calls	7,579	6,895
Net change in loans	(239,256)	(246,305)
Proceeds from sale of assets held for sale		1,542
Purchase of restricted equity securities	(5,483)	(1,891)
Purchases of premises and equipment, net	(2,076)	(1,461)
Capitalization of foreclosed assets	(35)
Increase in certificates of deposits at other financial institutions	(1,475)	(815)
Net cash from investing activities	(507,050)	(410,213)
Cash flows from financing activities
Increase in deposits	362,607	435,696
Decrease in federal funds purchased and repurchase agreements	(41,219)	(64,414)
Proceeds from Federal Home Loan Bank advances	320,000	75,000
Repayment of Federal Home Loan Bank advances	(165,000)	(80,000)
Proceeds from other borrowings		10,000
Repayment of other borrowings		(10,000)
Proceeds from issuance of subordinated notes, net of issuance costs		58,278
Proceeds from exercise of common stock warrants	150	45
Proceeds from exercise of common stock options	1,055	975
Divestment of common stock issued to 401(k) plan	(174)	(82)
Redemption of Series A preferred stock		(10,000)
Dividends paid on preferred stock		(23)
Earnings attributable to noncontrolling interest	(8)
Net cash from financing activities	477,411	415,475
Net change in cash and cash equivalents	5,814	19,656
Cash and cash equivalents at beginning of period	90,927	52,394
Cash and cash equivalents at end of period	96,741	72,050
Supplemental information:
Interest paid	14,793	6,481
Income taxes paid	9,085	$ 7,291
Non-cash supplemental information:
Transfers from loans to foreclosed assets	$ 1,315

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	NOTE 1—BASIS OF PRESENTATION The accompanying unaudited consolidated financial statements have been prepared in accordance with instructions to Form 10-Q and therefore do not include all information and footnotes necessary for a complete presentation of financial position, results of operations, and cash flows in conformity with U.S. generally accepted accounting principles (U.S. GAAP). All adjustments which are, in the opinion of management, necessary for a fair presentation of the results for the periods reported have been included as required by Regulation S-X, Rule 10-01. All such adjustments are of a normal recurring nature. It is suggested that these interim consolidated financial statements and notes be read in conjunction with the financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K filed with the SEC on March 16, 2017. These consolidated financial statements include the accounts of Franklin Financial Network, Inc. (“FFN”), and its wholly-owned subsidiaries, Franklin Synergy Bank (“Franklin Synergy” or the “Bank”) and Franklin Synergy Risk Management, Inc. (collectively, the “Company”). Franklin Synergy Investments of Tennessee, Inc., Franklin Synergy Investments of Nevada, Inc., and Franklin Synergy Preferred Capital, Inc. are direct or indirect subsidiaries of the Bank and are included in these consolidated financial statements. Significant intercompany transactions and accounts are eliminated in consolidation.

Securities

Securities	6 Months Ended
	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Securities	NOTE 2—SECURITIES The following table summarizes the amortized cost and fair value of the securities available for sale portfolio at June 30, 2017 and December 31, 2016 and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income. Amortized Gross Gross Fair June 30, 2017 U.S. government sponsored entities and agencies $ 60,129 $ — $ (124 ) $ 60,005 Mortgage-backed securities: residential 770,350 1,522 (6,530 ) 765,342 The coMortgage-backed securities: commercial 15,745 — (21 ) 15,724 State and political subdivisions 161,452 1,963 (3,198 ) 160,217 U.S Treasury bills 19,772 — (9 ) 19,763 Total $ 1,027,448 $ 3,485 $ (9,882 ) $ 1,021,051 Amortized Gross Gross Fair December 31, 2016 Mortgage-backed securities: residential $ 614,344 $ 949 $ (8,208 ) $ 607,085 Mortgage-backed securities: commercial 19,439 27 (132 ) 19,334 State and political subdivisions 133,280 238 (5,182 ) 128,336 Total $ 767,063 $ 1,214 $ (13,522 ) $ 754,755 The amortized cost and fair value of the securities held to maturity portfolio at June 30, 2017 and December 31, 2016 and the corresponding amounts of gross unrecognized gains and losses were as follows: Amortized Gross Gross Fair June 30, 2017 Mortgage backed securities: residential $ 100,344 $ 358 $ (1,900 ) $ 98,802 State and political subdivisions 122,011 3,858 (25 ) 125,844 Total $ 222,355 $ 4,216 $ (1,925 ) $ 224,646 Gross Gross Gross Fair December 31, 2016 U.S. government sponsored entities and agencies $ 203 $ 6 $ — $ 209 Mortgage backed securities: residential 106,169 328 (2,343 ) 104,154 State and political subdivisions 122,522 1,214 (207 ) 123,529 Total $ 228,894 $ 1,548 $ (2,550 ) $ 227,892 The proceeds from sales and calls of securities available for sale and the associated gains and losses were as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Proceeds $ 61,190 $ 13,491 $ 61,190 $ 62,263 Gross gains 246 797 246 1,490 Gross losses (126 ) (2 ) (126 ) (385 ) The amortized cost and fair value of the investment securities portfolio are shown by contractual maturity. Securities not due at a single maturity date, primarily mortgage-backed securities, are shown separately. June 30, 2017 Amortized Fair Available for sale One year or less $ 44,767 $ 44,646 Over one year through five years 50,135 50,012 Over five years through ten years 4,710 4,846 Over ten years 141,741 140,481 Mortgage-backed securities: residential 770,350 765,342 Mortgage-backed securities: commercial 15,745 15,724 Total $ 1,027,448 $ 1,021,051 Held to maturity Over one year through five years $ 1,104 $ 1,140 Over five years through ten years 5,179 5,339 Over ten years 115,728 119,365 Mortgage-backed securities: residential 100,344 98,802 Total $ 222,355 $ 224,646 Securities pledged at June 30, 2017 and December 31, 2016 had a carrying amount of $958,128 and $808,224, respectively, and were pledged to secure public deposits and repurchase agreements. At June 30, 2017 and December 31, 2016, there were no holdings of securities of any one issuer, other than the U.S. government-sponsored entities and agencies, in an amount greater than 10% of shareholders’ equity. The following table summarizes the securities with unrealized and unrecognized losses at June 30, 2017 and December 31, 2016, aggregated by major security type and length of time in a continuous unrealized loss position: Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized June 30, 2017 Available for sale U.S. government sponsored entities and agencies $ 60,005 $ (124 ) $ — $ — $ 60,005 $ (124 ) Mortgage-backed securities: residential 498,174 (5,958 ) 29,009 (572 ) 527,183 (6,530 ) Mortgage-backed securities: Commercial 15,724 (21 ) — — 15,724 (21 ) State and political subdivisions 74,988 (2,650 ) 8,190 (548 ) 83,178 (3,198 ) U.S. Treasury bills 19,763 (9 ) — — 19,763 (9 ) Total available for sale $ 668,654 $ (8,762 ) $ 37,199 $ (1,120 ) $ 705,853 $ (9,882 ) Less Than 12 Months 12 Months or Longer Total Fair Unrecognized Fair Unrecognized Fair Unrecognized Held to maturity Mortgage-backed securities: residential $ 68,296 $ (1,535 ) $ 13,830 $ (365 ) $ 82,126 $ (1,900 ) State and political subdivisions 1,427 (25 ) — — 1,427 (25 ) Total held to maturity $ 69,723 $ (1,560 ) $ 13,830 $ (365 ) $ 83,553 $ (1,925 ) Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2016 Available for sale Mortgage-backed securities: residential $ 465,416 $ (7,833 ) $ 9,907 $ (375 ) $ 475,323 $ (8,208 ) Mortgage-backed securities: commercial 15,752 (132 ) — — 15,752 (132 ) State and political subdivisions 100,020 (5,182 ) — — 100,020 (5,182 ) Total available for sale $ 581,188 $ (13,147 ) $ 9,907 $ (375 ) $ 591,095 $ (13,522 ) Less Than 12 Months 12 Months or Longer Total Fair Unrecognized Fair Unrecognized Fair Unrecognized Held to maturity Mortgage-backed securities: residential $ 89,523 $ (2,244 ) $ 3,025 $ (99 ) $ 92,548 $ (2,343 ) State and political subdivisions 18,907 (207 ) — — 18,907 (207 ) Total held to maturity $ 108,430 $ (2,451 ) $ 3,025 $ (99 ) $ 111,455 $ (2,550 ) Unrealized losses on debt securities have not been recognized into income because the issuers’ bonds are of high credit quality (rated AA or higher), management does not intend to sell and it is likely that management will not be required to sell the securities prior to their anticipated recovery, and the decline in fair value is largely due to changes in interest rates and other market conditions. The fair value is expected to recover as the bonds approach maturity.

Loans

Loans	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Loans	NOTE 3—LOANS Loans at June 30, 2017 and December 31, 2016 were as follows: June 30, December 31, Loans that are not PCI loans Construction and land development $ 497,940 $ 489,562 Commercial real estate: Nonfarm, nonresidential 550,112 458,569 Other 32,307 38,571 Residential real estate: Closed-end 1-4 family 346,744 254,474 Other 156,400 150,515 Commercial and industrial 422,823 376,476 Consumer and other 3,936 3,359 Loans before net deferred loan fees 2,010,262 1,771,526 Deferred loan fees, net (889 ) (793 ) Total loans that are not PCI loans 2,009,373 1,770,733 Total PCI loans 2,582 2,859 Allowance for loan losses (18,689 ) (16,553 ) Total loans, net of allowance for loan losses $ 1,993,266 $ 1,757,039 The following table presents the activity in the allowance for loan losses by portfolio segment for the three month periods ended June 30, 2017 and 2016: Construction Commercial Residential Commercial Consumer Total Three Months Ended June 30, 2017 Allowance for loan losses: Beginning balance $ 3,837 $ 4,659 $ 2,672 $ 6,885 $ 52 $ 18,105 Provision for loan losses (41 ) 352 255 9 (2 ) 573 Loans charged-off — — (1 ) — (2 ) (3 ) Recoveries — — 13 — 1 14 Total ending allowance balance $ 3,796 $ 5,011 $ 2,939 $ 6,894 $ 49 $ 18,689 Three Months Ended June 30, 2016 Allowance for loan losses: Beginning balance $ 3,378 $ 3,564 $ 1,800 $ 3,875 $ 59 $ 12,676 Provision for loan losses 246 301 248 780 (8 ) 1,567 Loans charged-off — — — — (4 ) (4 ) Recoveries — — 12 — 2 14 Total ending allowance balance $ 3,624 $ 3,865 $ 2,060 $ 4,655 $ 49 $ 14,253 The following table presents the activity in the allowance for loan losses by portfolio segment for the six-month periods ended June 30, 2017 and 2016: Construction Commercial Residential Commercial Consumer Total Six Months Ended June 30, 2017 Allowance for loan losses: Beginning balance $ 3,776 $ 4,266 $ 2,398 $ 6,068 $ 45 $ 16,553 Provision for loan losses 20 745 517 1,126 20 2,428 Loans charged-off — — (1 ) (300 ) (25 ) (326 ) Recoveries — — 25 — 9 34 Total ending allowance balance $ 3,796 $ 5,011 $ 2,939 $ 6,894 $ 49 $ 18,689 Six Months Ended June 30, 2016 Allowance for loan losses: Beginning balance $ 3,186 $ 3,146 $ 1,861 $ 3,358 $ 36 $ 11,587 Provision for loan losses 438 719 159 1,362 25 2,703 Loans charged-off — — — (65 ) (15 ) (80 ) Recoveries — — 40 — 3 43 Total ending allowance balance $ 3,624 $ 3,865 $ 2,060 $ 4,655 $ 49 $ 14,253 As of June 30, 2017 and December 31, 2016, there was $11 and $0 allowance for loan losses for PCI loans. The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of June 30, 2017 and December 31, 2016. For purposes of this disclosure, recorded investment in loans excludes accrued interest receivable and deferred loan fees, net due to immateriality. Construction Commercial Residential Commercial Consumer Total June 30, 2017 Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ — $ — $ — $ 933 $ — $ 933 Collectively evaluated for impairment 3,796 5,011 2,928 5,961 49 17,745 Purchased credit-impaired loans — — 11 — — 11 Total ending allowance balance $ 3,796 $ 5,011 $ 2,939 $ 6,894 $ 49 $ 18,689 Loans: Individually evaluated for impairment $ 2,250 $ 1,451 $ 639 $ 3,888 $ 7 $ 8,235 Collectively evaluated for impairment 495,690 580,968 502,505 418,935 3,929 2,002,027 Purchased credit-impaired loans — 395 192 1,995 — 2,582 Total ending loans balance $ 497,940 $ 582,814 $ 503,336 $ 424,818 $ 3,936 $ 2,012,844 December 31, 2016 Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ — $ — $ — $ 1,024 $ — $ 1,024 Collectively evaluated for impairment 3,776 4,266 2,398 5,044 45 15,529 Purchased credit-impaired loans — — — — — — Total ending allowance balance $ 3,776 $ 4,266 $ 2,398 $ 6,068 $ 45 $ 16,553 Loans: Individually evaluated for impairment $ 1,275 $ 2,836 $ 2,190 $ 3,608 $ — $ 9,909 Collectively evaluated for impairment 488,287 494,304 402,799 372,868 3,359 1,761,617 Purchased credit-impaired loans — 394 496 1,969 — 2,859 Total ending loans balance $ 489,562 $ 497,534 $ 405,485 $ 378,445 $ 3,359 $ 1,774,385 Loans collectively evaluated for impairment reported at June 30, 2017 include certain acquired loans. At June 30, 2017, these non-PCI loans had a carrying value of $59,892, comprised of contractually unpaid principal totaling $61,550 and discounts totaling $1,658. Management evaluated these loans for credit deterioration since acquisition and determined that $6 in allowance for loan losses was necessary at June 30, 2017. The following table presents information related to impaired loans by class of loans as of June 30, 2017 and December 31, 2016: Unpaid Recorded Allowance for June 30, 2017 With no allowance recorded: Construction and land development $ 2,250 $ 2,250 $ — Commercial real estate: Nonfarm, nonresidential 3,037 1,451 — Residential real estate: Closed-end 1-4 family 399 399 — Other 248 240 — Commercial and industrial 800 800 — Consumer and other 7 7 — Subtotal 6,741 5,147 — With an allowance recorded: Commercial and industrial 3,088 3,088 933 Subtotal 3,088 3,088 933 Total $ 9,829 $ 8,235 $ 933 December 31, 2016 With no allowance recorded: Construction and land development $ 1,275 $ 1,275 $ — Commercial real estate: Nonfarm, nonresidential 4,423 2,836 — Residential real estate: Closed-end 1-4 family 2,069 2,069 — Other 121 121 — Commercial and industrial 934 934 — Subtotal 8,822 7,235 — With an allowance recorded: Commercial and industrial 2,864 2,674 1,024 Subtotal 2,864 2,674 1,024 Total $ 11,686 $ 9,909 $ 1,024 The following table presents the average recorded investment of impaired loans by class of loans for the three and six months ended June 30, 2017 and 2016: Three Months Ended June 30, Six Months Ended June 30, Average Recorded Investment 2017 2016 2017 2016 With no allowance recorded: Construction and land development $ 2,250 $ 121 $ 1,125 $ 510 Commercial real estate: Nonfarm, nonresidential 2,242 1,094 3,185 1,248 Residential real estate: Closed-end 1-4 family 604 413 1,202 574 Other 181 754 151 733 Commercial and industrial 568 263 705 142 Consumer and other 2 30 1 15 Subtotal 5,847 2,675 6,369 3,222 With an allowance recorded: Commercial and industrial $ 2,855 $ 163 $ 2,720 $ 125 Subtotal 2,855 163 2,720 125 Total $ 8,702 $ 2,838 $ 9,089 $ 3,347 The impact on net interest income for these loans was not material to the Company’s results of operations for the three and six months ended June 30, 2017 and 2016. The following table presents the recorded investment in nonaccrual and loans past due over 90 days still on accrual by class of loans as of June 30, 2017 and December 31, 2016: Nonaccrual Loans Past Due June 30, 2017 Commercial real estate: Nonfarm, nonresidential $ 835 $ — Residential real estate: Closed-end 1-4 family 39 425 Other 118 — Commercial and industrial 2,374 108 Total $ 3,366 $ 533 December 31, 2016 Construction and land development $ — $ 1,950 Commercial real estate: Nonfarm, nonresidential 835 — Residential real estate: Closed-end 1-4 family — 452 Other 121 — Commercial and industrial 2,674 150 Total $ 3,630 $ 2,552 Nonaccrual loans and loans past due 90 days still on accrual include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans. 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: 30-59 60-89 Greater Nonaccrual Total Loans PCI Total June 30, 2017 Construction and land development $ 210 $ — $ — $ — $ 210 $ 497,730 $ — $ 497,940 Commercial real estate: Nonfarm, nonresidential — — — 835 835 549,277 395 550,507 Other — — — — — 32,307 — 32,307 Residential real estate: Closed-end 1-4 family 367 1,274 425 39 2,105 344,639 192 346,936 Other — — — 118 118 156,282 — 156,400 Commercial and industrial 237 11 108 2,374 2,730 420,093 1,995 424,818 Consumer and other 13 — — — 13 3,923 — 3,936 $ 827 $ 1,285 $ 533 $ 3,366 $ 6,011 $ 2,004,251 $ 2,582 $ 2,012,844 December 31, 2016 Construction and land development $ 380 $ — $ 1,950 $ — $ 2,330 $ 487,232 $ — $ 489,562 Commercial real estate: Nonfarm, nonresidential 664 — — 835 1,499 457,070 394 458,963 Other — — — — — 38,571 — 38,571 Residential real estate: Closed-end 1-4 family 428 10 452 — 890 253,584 496 254,970 Other 231 — — 121 352 150,163 — 150,515 Commercial and industrial 155 39 150 2,674 3,018 373,458 1,969 378,445 Consumer and other — — — — 3,359 — 3,359 $ 1,858 $ 49 $ 2,552 $ 3,630 $ 8,089 $ 1,763,437 $ 2,859 $ 1,774,385 Credit Quality Indicators: Special Mention. Substandard. Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass-rated loans. The following table includes PCI loans, which are included in the “Substandard” column. Based on the most recent analysis performed, the risk category of loans by class of loans is as follows as of June 30, 2017 and December 31, 2016: Pass Special Substandard Total June 30, 2017 Construction and land development $ 495,690 $ — $ 2,250 $ 497,940 Commercial real estate: Nonfarm, nonresidential 538,447 10,098 1,962 550,507 Other 32,307 — — 32,307 Residential real estate: Closed-end 1-4 family 345,863 — 1,073 346,936 Other 155,270 — 1,130 156,400 Commercial and industrial 403,818 15,475 5,525 424,818 Consumer and other 3,924 5 7 3,936 $ 1,975,319 $ 25,578 $ 11,947 $ 2,012,844 Pass Special Substandard Total December 31, 2016 Construction and land development $ 488,287 $ — $ 1,275 $ 489,562 Commercial real estate: Nonfarm, nonresidential 449,373 1,847 7,743 458,963 Other 38,571 — — 38,571 Residential real estate: 1-4 family 251,919 — 3,051 254,970 Other 149,504 — 1,011 150,515 Commercial and industrial 373,243 — 5,202 378,445 Consumer and other 3,359 — — 3,359 $ 1,754,256 $ 1,847 $ 18,282 $ 1,774,385 Troubled Debt Restructurings As of both June 30, 2017 and December 31, 2016, the Company’s loan portfolio contains one loan for $698 that has been modified in a troubled debt restructuring.

Loan Servicing

Loan Servicing	6 Months Ended
	Jun. 30, 2017
Text Block [Abstract]
Loan Servicing	NOTE 4—LOAN SERVICING Loans serviced for others are not reported as assets. The principal balances of these loans at June 30, 2017 and December 31, 2016 are as follows: June 30, December 31, Loan portfolios serviced for: Federal Home Loan Mortgage Corporation $ 503,107 $ 499,385 Other 2,258 2,954 The components of net loan servicing fees for the three and six months ended June 30, 2017 and 2016 were as follows: Three Months Ended Six Months Ended 2017 2016 2017 2016 Loan servicing fees, net: Loan servicing fees $ 319 $ 301 $ 639 $ 594 Amortization of loan servicing fees (266 ) (305 ) (479 ) (556 ) Change in impairment — — — — Total $ 53 $ (4 ) $ 160 $ 38 The fair value of servicing rights was estimated by management to be approximately $5,000 at June 30, 2017. Fair value for June 30, 2017 was determined using a weighted average discount rate of 10.5% and a weighted average prepayment speed of 9.5%. At December 31, 2016, the fair value of servicing rights was estimated by management to be approximately $4,635. Fair value for December 31, 2016 was determined using a weighted average discount rate of 10.5% and a weighted average prepayment speed of 10.2%.

Securities Sold Under Agreement

Securities Sold Under Agreement to Repurchase	6 Months Ended
	Jun. 30, 2017
Brokers and Dealers [Abstract]
Securities Sold Under Agreement to Repurchase	NOTE 5—SECURITIES SOLD UNDER AGREEMENT TO REPURCHASE Our subsidiary bank enters into borrowing arrangements with our retail business customers and correspondent banks through agreements to repurchase (“securities sold under agreements to repurchase”) under which the bank pledges investment securities owned and under its control as collateral against these short-term borrowing arrangements. At maturity the securities underlying the agreements are returned to the Company. At June 30, 2017 and December 31, 2016, these short-term borrowings totaled $32,132 and $36,496, respectively, and were secured by securities with carrying amounts of $41,397 and $41,136, respectively. At June 30, 2017, all of the Company’s repurchase agreements had one-day maturities. The following table provides additional details as of June 30, 2017: As of June 30, 2017 Mortgage- State and Total Market value of securities pledged $ 698 $ 41,912 $ 42,610 Borrowings related to pledged amounts $ — $ 32,132 $ 32,132 Market value pledged as a % of borrowings — % 130 % 133 % The following table provides additional details as of December 31, 2016: As of December 31, 2016 U.S. Mortgage- State and Total Market value of securities pledged $ 209 $ 117 $ 41,330 $ 41,656 Borrowings related to pledged amounts $ — $ — $ 36,496 $ 36,496 Market value pledged as a % of borrowings — % — % 113 % 114 %

Share-Based Payments

Share-Based Payments	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Share-Based Payments	NOTE 6—SHARE-BASED PAYMENTS In connection with the Company’s 2010 private offering, 32,425 warrants were issued to shareholders, one warrant for every twenty shares of common stock purchased. Each warrant allows the shareholders to purchase an additional share of common stock at $12.00 per share. The warrants were issued with an effective date of March 30, 2010 and were exercisable in whole or in part up to seven years following the date of issuance. The warrants were detachable from the common stock. There were 12,461 and 3,775 warrants exercised during the six months ended June 30, 2017 and 2016, respectively. A summary of the stock warrant activity for the six months ended June 30, 2017 and 2016 follows: June 30, June 30, Stock warrants exercised: Intrinsic value of warrants exercised $ 329 $ 73 Cash received from warrants exercised 150 45 The warrants expired on March 30, 2017; therefore at June 30, 2017, there were no outstanding warrants associated with the 2010 offering. The Company has two share based compensation plans as described below. Total compensation cost that has been charged against income for those plans was $788 and $537 and $1,235 and $795 for the three and six months ended June 30, 2017 and 2016, respectively. The total income tax benefit, which is shown on the Consolidated Statements of Income as a reduction of income tax expense, was $357 and $450 for the three and six months ended June 30, 2017. The total income tax benefit for the three and six months ended June 30, 2016 was $509 for both periods. Stock Options The 2007 Plan provides that no options intended to be ISOs may be granted after April 9, 2017. As a result, the Company’s board of directors approved, and recommended to its shareholders for approval, a new equity incentive plan, the 2017 Omnibus Equity Incentive Plan. The Company’s shareholders approved the 2017 Omnibus Equity Incentive Plan at the 2017 annual meeting of shareholders. The terms of the 2017 Omnibus Equity Incentive Plan are substantially similar to the terms of the 2007 Omnibus Equity Incentive Plan it was intended to replace. The 2017 Omnibus Equity Incentive Plan provides for authorized shares up to 5,000,000. At June 30, 2017, there were 4,790,739 authorized shares available for issuance under the 2017 Omnibus Equity Incentive Plan. Employee, organizer and director awards are generally granted with an exercise price equal to the market price of the Company’s common stock at the date of grant; those option awards have a vesting period of three to five years and have a ten-year contractual term. The Company assigns discretion to its Board of Directors to make grants either as qualified incentive stock options or as non-qualified stock options. All employee grants are intended to be treated as qualified incentive stock options, if allowable. All other grants are expected to be treated as non-qualified. The fair value of each option award is estimated on the date of grant using a closed form option valuation (Black-Scholes) model that uses the assumptions noted in the table below. Expected stock price volatility is based on historical volatilities of a peer group. The Company uses historical data to estimate option exercise and post-vesting termination behavior. The expected term of options granted represents the period of time that options granted are expected to be outstanding, which takes into account that the options are not transferable. The risk-free interest rate for the expected term of the option is based on the U.S. Treasury yield curve in effect at the time of the grant. The fair value of options granted was determined using the following weighted-average assumptions as of grant date. June 30, June 30, Risk-free interest rate 2.03 % 1.63 % Expected term 6.7 years 7.5 years Expected stock price volatility 33.36 % 29.46 % Dividend yield 0.03 % 0.24 % The weighted average fair value of options granted for the six months ended June 30, 2017 and 2016 were $14.38 and $9.47, respectively. A summary of the activity in the plans for the six months ended June 30, 2017 follows: Shares Weighted Weighted Aggregate Outstanding at beginning of year 1,395,016 $ 16.70 6.39 $ 35,090 Granted 239,070 37.85 Exercised (116,856 ) 11.63 Forfeited, expired, or cancelled (2,210 ) 23.06 Outstanding at period end 1,515,020 $ 20.42 6.77 $ 31,563 Vested or expected to vest 1,439,269 $ 20.42 6.77 $ 29,985 Exercisable at period end 792,366 $ 13.21 5.05 $ 22,143 For the six months 2017 2016 Stock options exercised: Intrinsic value of options exercised $ 3,460 $ 1,648 Cash received from options exercised 1,055 975 Tax benefit realized from option exercises 360 419 As of June 30, 2017, there was $6,147 of total unrecognized compensation cost related to non-vested stock options granted under the plans. The cost is expected to be recognized over a weighted-average period of 1.9 years. Restricted Stock A summary of activity for non-vested restricted share awards for the six months ended June 30, 2017 is as follows: Non-vested Shares Shares Weighted- Non-vested at December 31, 2016 106,458 $ 19.81 Granted 27,282 37.35 Vested (23,451 ) 18.93 Forfeited (371 ) 26.62 Non-vested at June 30, 2017 109,918 $ 24.85 Compensation expense associated with the restricted share awards is recognized on a straight-line basis over the time period that the restrictions associated with the awards lapse based on the total cost of the award at the grant date. As of June 30, 2017, there was $2,294 of total unrecognized compensation cost related to non-vested shares granted under the Plan. The cost is expected to be recognized over a weighted-average period of 3.9 years. The total fair value of shares vested during the six months ended June 30, 2017 and 2016 was $1,125 and $603, respectively. The total income tax benefit realized from the vesting of restricted stock for the three and six months ended June 30, 2017 and 2016 was $90 for all periods.

Regulatory Capital Matters

Regulatory Capital Matters	6 Months Ended
	Jun. 30, 2017
Banking and Thrift [Abstract]
Regulatory Capital Matters	NOTE 7—REGULATORY CAPITAL MATTERS Banks and bank holding companies are subject to regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can initiate regulatory action. The final rules implementing Basel Committee on Banking Supervision’s capital guidelines for U.S. Banks (Basel III rules) became effective for the Company on January 1, 2016 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 Basel III rules additionally provide for countercyclical capital requirements so that the required amount of capital increases in times of economic expansion and decreases in times of economic contraction, consistent with safety and soundness. Under the Basel III rules, banks must maintain a capital conservation buffer consisting of additional Common Equity Tier 1 Capital equal to 2.5% of risk-weighted assets above each of the required minimum capital levels in order to avoid limitations on paying dividends, engaging in share repurchases, and paying certain discretionary bonuses. This new capital conservation buffer requirement was phased in beginning January 2016 at 0.625% of risk-weighted assets and will increase each year until fully implemented at 2.5% in January 2019. The capital conservation buffer in effect for 2017 is 1.25%. Prompt corrective action regulations provide five classifications: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms are not used to represent overall financial condition. If adequately capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion, and capital restoration plans are required. At June 30, 2017, the most recent regulatory notifications categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. Management believes that, as of June 30, 2017, the Company and Bank met all capital adequacy requirements to which they are subject. There are no conditions or events since that notification that management believes have changed the institution’s category. Actual and required capital amounts and ratios are presented below as of June 30, 2017 and December 31, 2016 for the Company and Bank: Actual Required To Be Well Amount Ratio Amount Ratio Amount Ratio June 30, 2017 Company common equity Tier 1 capital to risk-weighted assets $ 282,945 11.54 % $ 110,300 4.50 % N/A N/A Company Total Capital to risk weighted assets $ 360,152 14.69 % $ 196,090 8.00 % N/A N/A Company Tier 1 (Core) Capital to risk weighted assets $ 282,945 11.54 % $ 147,067 6.00 % N/A N/A Company Tier 1 (Core) Capital to average assets $ 282,945 8.21 % $ 137,848 4.00 % N/A N/A Bank common equity Tier 1 capital to risk-weighted assets $ 337,486 13.77 % $ 110,301 4.50 % $ 159,324 6.50 % Bank Total Capital to risk weighted assets $ 356,267 14.53 % $ 196,091 8.00 % $ 245,114 10.00 % Bank Tier 1 (Core) Capital to risk weighted assets $ 337,486 13.77 % $ 147,068 6.00 % $ 196,091 8.00 % Bank Tier 1 (Core) Capital to average assets $ 337,486 9.80 % $ 137,786 4.00 % $ 172,233 5.00 % December 31, 2016 Company common equity Tier 1 capital to risk-weighted assets $ 263,693 11.75 % $ 101,022 4.50 % N/A N/A Company Total Capital to risk weighted assets $ 338,675 15.09 % $ 179,595 8.00 % N/A N/A Company Tier 1 (Core) Capital to risk weighted assets $ 263,693 11.75 % $ 134,696 6.00 % N/A N/A Company Tier 1 (Core) Capital to average assets $ 263,693 9.28 % $ 113,697 4.00 % N/A N/A Bank common equity Tier 1 capital to risk-weighted assets $ 319,005 14.18 % $ 101,216 4.50 % $ 146,201 6.50 % Bank Total Capital to risk weighted assets $ 335,650 14.92 % $ 179,939 8.00 % $ 224,924 10.00 % Bank Tier 1 (Core) Capital to risk weighted assets $ 319,005 14.18 % $ 134,954 6.00 % $ 179,939 8.00 % Bank Tier 1 (Core) Capital to average assets $ 319,005 11.22 % $ 113,697 4.00 % $ 142,122 5.00 % Note: Minimum ratios presented exclude the capital conservation buffer Dividend Restrictions

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value	NOTE 8—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 other 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. Securities Derivatives Impaired Loans Foreclosed Assets Appraisals for both collateral-dependent impaired loans and real estate owned are performed by certified general appraisers (for commercial properties) or certified residential appraisers (for residential properties) whose qualifications and licenses have been reviewed and verified by the Company. Once received, a member of the credit administration department reviews the assumptions and approaches utilized in the appraisal as well as the overall resulting fair value in comparison with independent data sources such as recent market data or industry-wide statistics. On an annual basis, the Company compares the actual selling price of collateral that has been sold to the most recent appraised value to determine what additional adjustment should be made to the appraisal value to arrive at fair value. Loans Held For Sale: Assets and liabilities measured at fair value on a recurring basis, including financial assets and liabilities for which the Company has elected the fair value option, are summarized below: Fair Value Measurements at Quoted Prices Significant Significant Financial Assets Securities available for sale U.S. government sponsored entities and agencies $ — $ 60,005 $ — Mortgage-backed securities-residential — 765,342 — Mortgage-backed securities-commercial — 15,724 — State and political subdivisions — 160,217 — U.S. Treasury bills — 19,763 — Total securities available for sale $ — $ 1,021,051 $ — Loans held for sale $ — $ 11,724 $ — Mortgage banking derivatives $ — $ 568 $ — Financial Liabilities Mortgage banking derivatives $ — $ (156 ) $ — Fair Value Measurements at Quoted Prices Significant Significant Financial Assets Securities available for sale Mortgage-backed securities-residential $ — $ 607,085 $ — Mortgage-backed securities-commercial — 19,334 — State and political subdivisions — 128,336 — Total securities available for sale $ — $ 754,755 $ — Loans held for sale $ — $ 23,699 $ — Mortgage banking derivatives $ — $ 229 $ — Financial Liabilities Mortgage banking derivatives $ — $ (66 ) $ — As of June 30, 2017, the unpaid principal balance of loans held for sale was $11,377 resulting in an unrealized gain of $347 included in gains on sale of loans. As of December 31, 2016, the unpaid principal balance of loans held for sale was $23,457, resulting in an unrealized gain of $242 included in gains on sale of loans. For the three months ended June 30, 2017 and 2016, the change in fair value related to loans held for sale, which is included in gain on sale of loans, was $(8) and $194, respectively. For the six months ended June 30, 2017 and 2016, the change in fair value related to loans held for sale, which is included in gain on sale of loans, was $105 and $231, respectively. None of these loans were 90 days or more past due or on nonaccrual as of June 30, 2017 and December 31, 2016. There were no transfers between level 1 and 2 during 2017 or 2016. Assets measured at fair value on a non-recurring basis are summarized below: There were two collateral-dependent impaired loans carried at fair value of $2,154 as of June 30, 2017 and one collateral-dependent impaired loan carried at fair value of $1,650 as of December 31, 2016. For the three and six months ended June 30, 2017, $194 in additional provision for loan losses was recorded related to impaired loans recorded at fair value of collateral. For the three and six months ended June 30, 2016, no additional provision for loan losses was recorded related to impaired loans recorded at fair value of collateral. Foreclosed assets measured at fair value less costs to sell, had a net carrying amount of $1,350 as of June 30, 2017 and $0 as of December 31, 2016. There were no properties at June 30, 2017 or 2016 that had required write-downs to fair value resulting in no write downs for the three and six months ended June 30, 2017 and 2016, respectively. The carrying amounts and estimated fair values of financial instruments at June 30, 2017 and December 31, 2016 are as follows: Carrying Fair Value Measurements at Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 96,741 $ 96,741 $ — $ — $ 96,741 Certificates of deposit held at other financial institutions 2,530 — 2,530 — 2,530 Securities available for sale 1,021,051 — 1,021,051 — 1,021,051 Securities held to maturity 222,355 — 224,646 — 224,646 Loans held for sale 11,724 — 11,724 — 11,724 Net loans 2,011,955 — — 1,970,297 1,970,297 Restricted equity securities 17,326 n/a n/a n/a n/a Servicing rights, net 3,581 — — 5,000 5,000 Accrued interest receivable 11,217 6 6,241 4,970 11,217 Financial liabilities Deposits $ 2,754,425 $ 1,496,990 $ 1,254,119 $ — $ 2,751,109 Federal funds purchased and repurchase agreements 42,082 — 42,082 — 42,082 Federal Home Loan Bank advances 287,000 — 285,951 — 285,951 Subordinated notes, net 58,426 — — 62,098 62,098 Accrued interest payable 2,571 33 1,850 688 2,571 Carrying Fair Value Measurements at Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 90,927 $ 90,927 $ — $ — $ 90,927 Certificates of deposit held at other financial institutions 1,055 — 1,055 — 1,055 Securities available for sale 754,755 — 754,755 — 754,755 Securities held to maturity 228,894 — 227,892 — 227,892 Loans held for sale 23,699 — 23,699 — 23,699 Net loans 1,757,039 — — 1,727,188 1,727,188 Restricted equity securities 11,843 n/a n/a n/a n/a Servicing rights, net 3,621 — — 5,015 5,015 Accrued interest receivable 9,931 — 5,172 4,759 9,931 Financial liabilities Deposits $ 2,391,818 $ 1,551,461 $ 836,444 $ — $ 2,387,905 Federal funds purchased and repurchase agreements 83,301 — 83,301 — 83,301 Federal Home Loan Bank advances 132,000 — 131,098 — 131,098 Subordinated notes, net 58,337 — — 61,762 61,762 Accrued interest payable 1,924 154 1,075 695 1,924 The methods and assumptions not previously described used to estimate fair values are described as follows: (a) Cash and Cash Equivalents: (b) Loans: (c) Restricted Equity Securities: (d) Mortgage Servicing Rights: (e) Deposits: (f) Federal Funds Purchased and Repurchase Agreements: (g) Federal Home Loan Bank Advances: (h) Subordinated Notes: (i) Accrued Interest Receivable/Payable: (j) Off-balance Sheet Instruments:

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 9—EARNINGS PER SHARE The two-class method is used in the calculation of basic and diluted earnings per share. Under the two-class method, earnings available to common shareholders for the period are allocated between common shareholders and participating securities according to dividends declared (or accumulated) and participation rights in undistributed earnings. The factors used in the earnings per share computation follow: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Basic Net income available to common shareholders $ 8,866 $ 7,508 $ 16,800 $ 13,718 Less: earnings allocated to participating securities (76 ) (86 ) (140 ) (149 ) Net income allocated to common shareholders $ 8,790 $ 7,422 $ 16,660 $ 13,569 Weighted average common shares outstanding including participating securities 13,118,201 10,654,351 13,083,797 10,617,328 Less: Participating securities (111,977 ) (121,475 ) (109,166 ) (115,270 ) Average shares 13,006,224 10,532,876 12,974,631 10,502,058 Basic earnings per common share $ 0.68 $ 0.70 $ 1.28 $ 1.29 Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Diluted Net income allocated to common shareholders $ 8,790 $ 7,422 $ 16,660 $ 13,569 Weighted average common shares outstanding for basic earnings per common share 13,006,224 10,532,876 12,974,631 10,502,058 Add: Dilutive effects of assumed exercises of stock options 695,199 653,339 701,947 638,041 Add: Dilutive effects of assumed exercises of stock warrants 339 13,015 3,157 12,721 Average shares and dilutive potential common shares 13,701,762 11,199,230 13,679,735 11,152,820 Dilutive earnings per common share $ 0.64 $ 0.66 $ 1.22 $ 1.22 For the three months ended June 30, 2017 and 2016, stock options for 302,570 and 239,587 shares of common stock were not considered in computing diluted earnings per common share because they were antidilutive. Stock options for 205,285 and 150,877 shares of common stock were not considered in computing diluted earnings per common share for the six months ended June 30, 2017 and 2016 because they were antidilutive.

Subordinated Debt Issuance

Subordinated Debt Issuance	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Subordinated Debt Issuance	NOTE 10—SUBORDINATED DEBT ISSUANCE The Company’s subordinated notes, net of issuance costs, totaled $58,426 and $58,337 at June 30, 2017 and at December 31, 2016, respectively. For regulatory capital purposes, the subordinated notes are treated as Tier 2 capital, subject to certain limitations, and are included in total regulatory capital when calculating the Company’s total capital to risk weighted assets ratio as indicated in Note 7 of these consolidated financial statements. The Company completed the issuance of $60,000 in principal amount of subordinated notes in two separate offerings. In March 2016, $40,000 of 6.875% fixed-to-floating rate subordinated notes (the “March 2016 Subordinated Notes”) were issued in a public offering to accredited institutional investors, and in June 2016, $20,000 of 7.00% fixed-to-floating rate subordinated notes (the “June 2016 Subordinated Notes”) were issued to certain accredited institutional investors in a private offering. The subordinated notes are unsecured and will rank at least equally with all of the Company’s other unsecured subordinated indebtedness and will be effectively subordinated to all of our secured debt to the extent of the value of the collateral securing such debt. The subordinated notes will be subordinated in right of payment to all of our existing and future senior indebtedness, and will rank structurally junior to all existing and future liabilities of our subsidiaries including, in the case of the Company’s bank subsidiary, its depositors, and any preferred equity holders of our subsidiaries. The holders of the subordinated notes may be fully subordinated to interests held by the U.S. government in the event that we enter into a receivership, insolvency, liquidation, or similar proceeding. The issuance costs related to the March 2016 Subordinated Notes amounted to $1,382 and are being amortized as interest expense over the ten-year term of the March 2016 Subordinated Notes. The issuance costs related to the June 2016 Subordinated Notes were $404 and are being amortized as interest expense over the ten-year term of the June 2016 Subordinated Notes. For the three months ended June 30, 2017 and 2016, amortization of issuance costs has amounted to $45 and $34, respectively. For the six months ended June 30, 2017 and 2016, amortization of issuance costs has amounted to $89 and $34, respectively. The following table summarizes the terms of each subordinated note offering: March 2016 June 2016 Principal amount issued $40,000 $20,000 Maturity date March 30, 2026 July 1, 2026 Initial fixed interest rate 6.875% 7.00% Initial interest rate period 5 years 5 years First interest rate change date March 30, 2021 July 1, 2021 Interest payment frequency through year five* Semiannually Semiannually Interest payment frequency after five years* Quarterly Quarterly Interest repricing index and margin 3-month LIBOR plus 5.636% 3-month LIBOR plus 6.04% Repricing frequency after five years Quarterly Quarterly * The Company currently may not make interest payments on either series of subordinated notes without prior written approval from its primary regulatory agencies. Through June 30, 2017 all interest payments have been made in accordance with the terms of the agreements.

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2017
Summary of Amortized Cost and Fair Value of Available for Sale Securities	The following table summarizes the amortized cost and fair value of the securities available for sale portfolio at June 30, 2017 and December 31, 2016 and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income. Amortized Gross Gross Fair June 30, 2017 U.S. government sponsored entities and agencies $ 60,129 $ — $ (124 ) $ 60,005 Mortgage-backed securities: residential 770,350 1,522 (6,530 ) 765,342 The coMortgage-backed securities: commercial 15,745 — (21 ) 15,724 State and political subdivisions 161,452 1,963 (3,198 ) 160,217 U.S Treasury bills 19,772 — (9 ) 19,763 Total $ 1,027,448 $ 3,485 $ (9,882 ) $ 1,021,051 Amortized Gross Gross Fair December 31, 2016 Mortgage-backed securities: residential $ 614,344 $ 949 $ (8,208 ) $ 607,085 Mortgage-backed securities: commercial 19,439 27 (132 ) 19,334 State and political subdivisions 133,280 238 (5,182 ) 128,336 Total $ 767,063 $ 1,214 $ (13,522 ) $ 754,755
Schedule of Amortized Cost and Fair Value of Held to Maturity Securities Portfolio	The amortized cost and fair value of the securities held to maturity portfolio at June 30, 2017 and December 31, 2016 and the corresponding amounts of gross unrecognized gains and losses were as follows: Amortized Gross Gross Fair June 30, 2017 Mortgage backed securities: residential $ 100,344 $ 358 $ (1,900 ) $ 98,802 State and political subdivisions 122,011 3,858 (25 ) 125,844 Total $ 222,355 $ 4,216 $ (1,925 ) $ 224,646 Gross Gross Gross Fair December 31, 2016 U.S. government sponsored entities and agencies $ 203 $ 6 $ — $ 209 Mortgage backed securities: residential 106,169 328 (2,343 ) 104,154 State and political subdivisions 122,522 1,214 (207 ) 123,529 Total $ 228,894 $ 1,548 $ (2,550 ) $ 227,892
Schedule of Amortized Cost and Fair Value of Investment Securities Portfolio by Contractual Maturity	The amortized cost and fair value of the investment securities portfolio are shown by contractual maturity. Securities not due at a single maturity date, primarily mortgage-backed securities, are shown separately. June 30, 2017 Amortized Fair Available for sale One year or less $ 44,767 $ 44,646 Over one year through five years 50,135 50,012 Over five years through ten years 4,710 4,846 Over ten years 141,741 140,481 Mortgage-backed securities: residential 770,350 765,342 Mortgage-backed securities: commercial 15,745 15,724 Total $ 1,027,448 $ 1,021,051 Held to maturity Over one year through five years $ 1,104 $ 1,140 Over five years through ten years 5,179 5,339 Over ten years 115,728 119,365 Mortgage-backed securities: residential 100,344 98,802 Total $ 222,355 $ 224,646
Schedule of Unrealized Losses and Fair Value by Major Security Type	The following table summarizes the securities with unrealized and unrecognized losses at June 30, 2017 and December 31, 2016, aggregated by major security type and length of time in a continuous unrealized loss position: Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized June 30, 2017 Available for sale U.S. government sponsored entities and agencies $ 60,005 $ (124 ) $ — $ — $ 60,005 $ (124 ) Mortgage-backed securities: residential 498,174 (5,958 ) 29,009 (572 ) 527,183 (6,530 ) Mortgage-backed securities: Commercial 15,724 (21 ) — — 15,724 (21 ) State and political subdivisions 74,988 (2,650 ) 8,190 (548 ) 83,178 (3,198 ) U.S. Treasury bills 19,763 (9 ) — — 19,763 (9 ) Total available for sale $ 668,654 $ (8,762 ) $ 37,199 $ (1,120 ) $ 705,853 $ (9,882 ) Less Than 12 Months 12 Months or Longer Total Fair Unrecognized Fair Unrecognized Fair Unrecognized Held to maturity Mortgage-backed securities: residential $ 68,296 $ (1,535 ) $ 13,830 $ (365 ) $ 82,126 $ (1,900 ) State and political subdivisions 1,427 (25 ) — — 1,427 (25 ) Total held to maturity $ 69,723 $ (1,560 ) $ 13,830 $ (365 ) $ 83,553 $ (1,925 ) Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2016 Available for sale Mortgage-backed securities: residential $ 465,416 $ (7,833 ) $ 9,907 $ (375 ) $ 475,323 $ (8,208 ) Mortgage-backed securities: commercial 15,752 (132 ) — — 15,752 (132 ) State and political subdivisions 100,020 (5,182 ) — — 100,020 (5,182 ) Total available for sale $ 581,188 $ (13,147 ) $ 9,907 $ (375 ) $ 591,095 $ (13,522 ) Less Than 12 Months 12 Months or Longer Total Fair Unrecognized Fair Unrecognized Fair Unrecognized Held to maturity Mortgage-backed securities: residential $ 89,523 $ (2,244 ) $ 3,025 $ (99 ) $ 92,548 $ (2,343 ) State and political subdivisions 18,907 (207 ) — — 18,907 (207 ) Total held to maturity $ 108,430 $ (2,451 ) $ 3,025 $ (99 ) $ 111,455 $ (2,550 )
Securities Available-for-sale [Member]
Summary of Sales and Calls of Securities	The proceeds from sales and calls of securities available for sale and the associated gains and losses were as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Proceeds $ 61,190 $ 13,491 $ 61,190 $ 62,263 Gross gains 246 797 246 1,490 Gross losses (126 ) (2 ) (126 ) (385 )

Loans (Tables)

Loans (Tables)	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Summary of Loans	Loans at June 30, 2017 and December 31, 2016 were as follows: June 30, December 31, Loans that are not PCI loans Construction and land development $ 497,940 $ 489,562 Commercial real estate: Nonfarm, nonresidential 550,112 458,569 Other 32,307 38,571 Residential real estate: Closed-end 1-4 family 346,744 254,474 Other 156,400 150,515 Commercial and industrial 422,823 376,476 Consumer and other 3,936 3,359 Loans before net deferred loan fees 2,010,262 1,771,526 Deferred loan fees, net (889 ) (793 ) Total loans that are not PCI loans 2,009,373 1,770,733 Total PCI loans 2,582 2,859 Allowance for loan losses (18,689 ) (16,553 ) Total loans, net of allowance for loan losses $ 1,993,266 $ 1,757,039
Activity in Allowance for Loan Losses by Portfolio Segment	The following table presents the activity in the allowance for loan losses by portfolio segment for the three month periods ended June 30, 2017 and 2016: Construction Commercial Residential Commercial Consumer Total Three Months Ended June 30, 2017 Allowance for loan losses: Beginning balance $ 3,837 $ 4,659 $ 2,672 $ 6,885 $ 52 $ 18,105 Provision for loan losses (41 ) 352 255 9 (2 ) 573 Loans charged-off — — (1 ) — (2 ) (3 ) Recoveries — — 13 — 1 14 Total ending allowance balance $ 3,796 $ 5,011 $ 2,939 $ 6,894 $ 49 $ 18,689 Three Months Ended June 30, 2016 Allowance for loan losses: Beginning balance $ 3,378 $ 3,564 $ 1,800 $ 3,875 $ 59 $ 12,676 Provision for loan losses 246 301 248 780 (8 ) 1,567 Loans charged-off — — — — (4 ) (4 ) Recoveries — — 12 — 2 14 Total ending allowance balance $ 3,624 $ 3,865 $ 2,060 $ 4,655 $ 49 $ 14,253 The following table presents the activity in the allowance for loan losses by portfolio segment for the six-month periods ended June 30, 2017 and 2016: Construction Commercial Residential Commercial Consumer Total Six Months Ended June 30, 2017 Allowance for loan losses: Beginning balance $ 3,776 $ 4,266 $ 2,398 $ 6,068 $ 45 $ 16,553 Provision for loan losses 20 745 517 1,126 20 2,428 Loans charged-off — — (1 ) (300 ) (25 ) (326 ) Recoveries — — 25 — 9 34 Total ending allowance balance $ 3,796 $ 5,011 $ 2,939 $ 6,894 $ 49 $ 18,689 Six Months Ended June 30, 2016 Allowance for loan losses: Beginning balance $ 3,186 $ 3,146 $ 1,861 $ 3,358 $ 36 $ 11,587 Provision for loan losses 438 719 159 1,362 25 2,703 Loans charged-off — — — (65 ) (15 ) (80 ) Recoveries — — 40 — 3 43 Total ending allowance balance $ 3,624 $ 3,865 $ 2,060 $ 4,655 $ 49 $ 14,253
Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment and Based on Impairment Method	The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of June 30, 2017 and December 31, 2016. For purposes of this disclosure, recorded investment in loans excludes accrued interest receivable and deferred loan fees, net due to immateriality. Construction Commercial Residential Commercial Consumer Total June 30, 2017 Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ — $ — $ — $ 933 $ — $ 933 Collectively evaluated for impairment 3,796 5,011 2,928 5,961 49 17,745 Purchased credit-impaired loans — — 11 — — 11 Total ending allowance balance $ 3,796 $ 5,011 $ 2,939 $ 6,894 $ 49 $ 18,689 Loans: Individually evaluated for impairment $ 2,250 $ 1,451 $ 639 $ 3,888 $ 7 $ 8,235 Collectively evaluated for impairment 495,690 580,968 502,505 418,935 3,929 2,002,027 Purchased credit-impaired loans — 395 192 1,995 — 2,582 Total ending loans balance $ 497,940 $ 582,814 $ 503,336 $ 424,818 $ 3,936 $ 2,012,844 December 31, 2016 Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ — $ — $ — $ 1,024 $ — $ 1,024 Collectively evaluated for impairment 3,776 4,266 2,398 5,044 45 15,529 Purchased credit-impaired loans — — — — — — Total ending allowance balance $ 3,776 $ 4,266 $ 2,398 $ 6,068 $ 45 $ 16,553 Loans: Individually evaluated for impairment $ 1,275 $ 2,836 $ 2,190 $ 3,608 $ — $ 9,909 Collectively evaluated for impairment 488,287 494,304 402,799 372,868 3,359 1,761,617 Purchased credit-impaired loans — 394 496 1,969 — 2,859 Total ending loans balance $ 489,562 $ 497,534 $ 405,485 $ 378,445 $ 3,359 $ 1,774,385
Summary of Impaired Loans by Class of Loans	The following table presents information related to impaired loans by class of loans as of June 30, 2017 and December 31, 2016: Unpaid Recorded Allowance for June 30, 2017 With no allowance recorded: Construction and land development $ 2,250 $ 2,250 $ — Commercial real estate: Nonfarm, nonresidential 3,037 1,451 — Residential real estate: Closed-end 1-4 family 399 399 — Other 248 240 — Commercial and industrial 800 800 — Consumer and other 7 7 — Subtotal 6,741 5,147 — With an allowance recorded: Commercial and industrial 3,088 3,088 933 Subtotal 3,088 3,088 933 Total $ 9,829 $ 8,235 $ 933 December 31, 2016 With no allowance recorded: Construction and land development $ 1,275 $ 1,275 $ — Commercial real estate: Nonfarm, nonresidential 4,423 2,836 — Residential real estate: Closed-end 1-4 family 2,069 2,069 — Other 121 121 — Commercial and industrial 934 934 — Subtotal 8,822 7,235 — With an allowance recorded: Commercial and industrial 2,864 2,674 1,024 Subtotal 2,864 2,674 1,024 Total $ 11,686 $ 9,909 $ 1,024 The following table presents the average recorded investment of impaired loans by class of loans for the three and six months ended June 30, 2017 and 2016: Three Months Ended June 30, Six Months Ended June 30, Average Recorded Investment 2017 2016 2017 2016 With no allowance recorded: Construction and land development $ 2,250 $ 121 $ 1,125 $ 510 Commercial real estate: Nonfarm, nonresidential 2,242 1,094 3,185 1,248 Residential real estate: Closed-end 1-4 family 604 413 1,202 574 Other 181 754 151 733 Commercial and industrial 568 263 705 142 Consumer and other 2 30 1 15 Subtotal 5,847 2,675 6,369 3,222 With an allowance recorded: Commercial and industrial $ 2,855 $ 163 $ 2,720 $ 125 Subtotal 2,855 163 2,720 125 Total $ 8,702 $ 2,838 $ 9,089 $ 3,347
Schedule of Recorded Investment in Nonaccrual and Loans Past Due Over 90 Days on Accrual by Class of Loans	The following table presents the recorded investment in nonaccrual and loans past due over 90 days still on accrual by class of loans as of June 30, 2017 and December 31, 2016: Nonaccrual Loans Past Due June 30, 2017 Commercial real estate: Nonfarm, nonresidential $ 835 $ — Residential real estate: Closed-end 1-4 family 39 425 Other 118 — Commercial and industrial 2,374 108 Total $ 3,366 $ 533 December 31, 2016 Construction and land development $ — $ 1,950 Commercial real estate: Nonfarm, nonresidential 835 — Residential real estate: Closed-end 1-4 family — 452 Other 121 — Commercial and industrial 2,674 150 Total $ 3,630 $ 2,552
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: 30-59 60-89 Greater Nonaccrual Total Loans PCI Total June 30, 2017 Construction and land development $ 210 $ — $ — $ — $ 210 $ 497,730 $ — $ 497,940 Commercial real estate: Nonfarm, nonresidential — — — 835 835 549,277 395 550,507 Other — — — — — 32,307 — 32,307 Residential real estate: Closed-end 1-4 family 367 1,274 425 39 2,105 344,639 192 346,936 Other — — — 118 118 156,282 — 156,400 Commercial and industrial 237 11 108 2,374 2,730 420,093 1,995 424,818 Consumer and other 13 — — — 13 3,923 — 3,936 $ 827 $ 1,285 $ 533 $ 3,366 $ 6,011 $ 2,004,251 $ 2,582 $ 2,012,844 December 31, 2016 Construction and land development $ 380 $ — $ 1,950 $ — $ 2,330 $ 487,232 $ — $ 489,562 Commercial real estate: Nonfarm, nonresidential 664 — — 835 1,499 457,070 394 458,963 Other — — — — — 38,571 — 38,571 Residential real estate: Closed-end 1-4 family 428 10 452 — 890 253,584 496 254,970 Other 231 — — 121 352 150,163 — 150,515 Commercial and industrial 155 39 150 2,674 3,018 373,458 1,969 378,445 Consumer and other — — — — 3,359 — 3,359 $ 1,858 $ 49 $ 2,552 $ 3,630 $ 8,089 $ 1,763,437 $ 2,859 $ 1,774,385
Summary of Risk Category of Loans by Class of Loans	Based on the most recent analysis performed, the risk category of loans by class of loans is as follows as of June 30, 2017 and December 31, 2016: Pass Special Substandard Total June 30, 2017 Construction and land development $ 495,690 $ — $ 2,250 $ 497,940 Commercial real estate: Nonfarm, nonresidential 538,447 10,098 1,962 550,507 Other 32,307 — — 32,307 Residential real estate: Closed-end 1-4 family 345,863 — 1,073 346,936 Other 155,270 — 1,130 156,400 Commercial and industrial 403,818 15,475 5,525 424,818 Consumer and other 3,924 5 7 3,936 $ 1,975,319 $ 25,578 $ 11,947 $ 2,012,844 Pass Special Substandard Total December 31, 2016 Construction and land development $ 488,287 $ — $ 1,275 $ 489,562 Commercial real estate: Nonfarm, nonresidential 449,373 1,847 7,743 458,963 Other 38,571 — — 38,571 Residential real estate: 1-4 family 251,919 — 3,051 254,970 Other 149,504 — 1,011 150,515 Commercial and industrial 373,243 — 5,202 378,445 Consumer and other 3,359 — — 3,359 $ 1,754,256 $ 1,847 $ 18,282 $ 1,774,385

Loan Servicing (Tables)

Loan Servicing (Tables)	6 Months Ended
	Jun. 30, 2017
Text Block [Abstract]
Schedule of Loans Serviced Not Reported as Assets	Loans serviced for others are not reported as assets. The principal balances of these loans at June 30, 2017 and December 31, 2016 are as follows: June 30, December 31, Loan portfolios serviced for: Federal Home Loan Mortgage Corporation $ 503,107 $ 499,385 Other 2,258 2,954
Components of Net Loan Servicing Fees	The components of net loan servicing fees for the three and six months ended June 30, 2017 and 2016 were as follows: Three Months Ended Six Months Ended 2017 2016 2017 2016 Loan servicing fees, net: Loan servicing fees $ 319 $ 301 $ 639 $ 594 Amortization of loan servicing fees (266 ) (305 ) (479 ) (556 ) Change in impairment — — — — Total $ 53 $ (4 ) $ 160 $ 38

Securities Sold Under Agreeme21

Securities Sold Under Agreement to Repurchase (Tables)	6 Months Ended
	Jun. 30, 2017
Brokers and Dealers [Abstract]
Additional Details of Securities Sold under Agreement to Repurchase	The following table provides additional details as of June 30, 2017: As of June 30, 2017 Mortgage- State and Total Market value of securities pledged $ 698 $ 41,912 $ 42,610 Borrowings related to pledged amounts $ — $ 32,132 $ 32,132 Market value pledged as a % of borrowings — % 130 % 133 % The following table provides additional details as of December 31, 2016: As of December 31, 2016 U.S. Mortgage- State and Total Market value of securities pledged $ 209 $ 117 $ 41,330 $ 41,656 Borrowings related to pledged amounts $ — $ — $ 36,496 $ 36,496 Market value pledged as a % of borrowings — % — % 113 % 114 %

Share-Based Payments (Tables)

Share-Based Payments (Tables)	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Summary of Stock Warrant Activity	A summary of the stock warrant activity for the six months ended June 30, 2017 and 2016 follows: June 30, June 30, Stock warrants exercised: Intrinsic value of warrants exercised $ 329 $ 73 Cash received from warrants exercised 150 45
Fair Value Assumptions of Stock Options	The fair value of options granted was determined using the following weighted-average assumptions as of grant date. June 30, June 30, Risk-free interest rate 2.03 % 1.63 % Expected term 6.7 years 7.5 years Expected stock price volatility 33.36 % 29.46 % Dividend yield 0.03 % 0.24 %
Summary of Company's Stock Option Activities	A summary of the activity in the plans for the six months ended June 30, 2017 follows: Shares Weighted Weighted Aggregate Outstanding at beginning of year 1,395,016 $ 16.70 6.39 $ 35,090 Granted 239,070 37.85 Exercised (116,856 ) 11.63 Forfeited, expired, or cancelled (2,210 ) 23.06 Outstanding at period end 1,515,020 $ 20.42 6.77 $ 31,563 Vested or expected to vest 1,439,269 $ 20.42 6.77 $ 29,985 Exercisable at period end 792,366 $ 13.21 5.05 $ 22,143
Summary of Stock Options Exercised	For the six months 2017 2016 Stock options exercised: Intrinsic value of options exercised $ 3,460 $ 1,648 Cash received from options exercised 1,055 975 Tax benefit realized from option exercises 360 419
Summary of Activity for Nonvested Restricted Share Awards	A summary of activity for non-vested restricted share awards for the six months ended June 30, 2017 is as follows: Non-vested Shares Shares Weighted- Non-vested at December 31, 2016 106,458 $ 19.81 Granted 27,282 37.35 Vested (23,451 ) 18.93 Forfeited (371 ) 26.62 Non-vested at June 30, 2017 109,918 $ 24.85

Regulatory Capital Matters (Tab

Regulatory Capital Matters (Tables)	6 Months Ended
	Jun. 30, 2017
Banking and Thrift [Abstract]
Actual and Required Capital Amounts and Ratios	Actual and required capital amounts and ratios are presented below as of June 30, 2017 and December 31, 2016 for the Company and Bank: Actual Required To Be Well Amount Ratio Amount Ratio Amount Ratio June 30, 2017 Company common equity Tier 1 capital to risk-weighted assets $ 282,945 11.54 % $ 110,300 4.50 % N/A N/A Company Total Capital to risk weighted assets $ 360,152 14.69 % $ 196,090 8.00 % N/A N/A Company Tier 1 (Core) Capital to risk weighted assets $ 282,945 11.54 % $ 147,067 6.00 % N/A N/A Company Tier 1 (Core) Capital to average assets $ 282,945 8.21 % $ 137,848 4.00 % N/A N/A Bank common equity Tier 1 capital to risk-weighted assets $ 337,486 13.77 % $ 110,301 4.50 % $ 159,324 6.50 % Bank Total Capital to risk weighted assets $ 356,267 14.53 % $ 196,091 8.00 % $ 245,114 10.00 % Bank Tier 1 (Core) Capital to risk weighted assets $ 337,486 13.77 % $ 147,068 6.00 % $ 196,091 8.00 % Bank Tier 1 (Core) Capital to average assets $ 337,486 9.80 % $ 137,786 4.00 % $ 172,233 5.00 % December 31, 2016 Company common equity Tier 1 capital to risk-weighted assets $ 263,693 11.75 % $ 101,022 4.50 % N/A N/A Company Total Capital to risk weighted assets $ 338,675 15.09 % $ 179,595 8.00 % N/A N/A Company Tier 1 (Core) Capital to risk weighted assets $ 263,693 11.75 % $ 134,696 6.00 % N/A N/A Company Tier 1 (Core) Capital to average assets $ 263,693 9.28 % $ 113,697 4.00 % N/A N/A Bank common equity Tier 1 capital to risk-weighted assets $ 319,005 14.18 % $ 101,216 4.50 % $ 146,201 6.50 % Bank Total Capital to risk weighted assets $ 335,650 14.92 % $ 179,939 8.00 % $ 224,924 10.00 % Bank Tier 1 (Core) Capital to risk weighted assets $ 319,005 14.18 % $ 134,954 6.00 % $ 179,939 8.00 % Bank Tier 1 (Core) Capital to average assets $ 319,005 11.22 % $ 113,697 4.00 % $ 142,122 5.00 %

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis, including financial assets and liabilities for which the Company has elected the fair value option, are summarized below: Fair Value Measurements at Quoted Prices Significant Significant Financial Assets Securities available for sale U.S. government sponsored entities and agencies $ — $ 60,005 $ — Mortgage-backed securities-residential — 765,342 — Mortgage-backed securities-commercial — 15,724 — State and political subdivisions — 160,217 — U.S. Treasury bills — 19,763 — Total securities available for sale $ — $ 1,021,051 $ — Loans held for sale $ — $ 11,724 $ — Mortgage banking derivatives $ — $ 568 $ — Financial Liabilities Mortgage banking derivatives $ — $ (156 ) $ — Fair Value Measurements at Quoted Prices Significant Significant Financial Assets Securities available for sale Mortgage-backed securities-residential $ — $ 607,085 $ — Mortgage-backed securities-commercial — 19,334 — State and political subdivisions — 128,336 — Total securities available for sale $ — $ 754,755 $ — Loans held for sale $ — $ 23,699 $ — Mortgage banking derivatives $ — $ 229 $ — Financial Liabilities Mortgage banking derivatives $ — $ (66 ) $ —
Carrying Amount and Estimated Fair Value of Financial Instruments	The carrying amounts and estimated fair values of financial instruments at June 30, 2017 and December 31, 2016 are as follows: Carrying Fair Value Measurements at Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 96,741 $ 96,741 $ — $ — $ 96,741 Certificates of deposit held at other financial institutions 2,530 — 2,530 — 2,530 Securities available for sale 1,021,051 — 1,021,051 — 1,021,051 Securities held to maturity 222,355 — 224,646 — 224,646 Loans held for sale 11,724 — 11,724 — 11,724 Net loans 2,011,955 — — 1,970,297 1,970,297 Restricted equity securities 17,326 n/a n/a n/a n/a Servicing rights, net 3,581 — — 5,000 5,000 Accrued interest receivable 11,217 6 6,241 4,970 11,217 Financial liabilities Deposits $ 2,754,425 $ 1,496,990 $ 1,254,119 $ — $ 2,751,109 Federal funds purchased and repurchase agreements 42,082 — 42,082 — 42,082 Federal Home Loan Bank advances 287,000 — 285,951 — 285,951 Subordinated notes, net 58,426 — — 62,098 62,098 Accrued interest payable 2,571 33 1,850 688 2,571 Carrying Fair Value Measurements at Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 90,927 $ 90,927 $ — $ — $ 90,927 Certificates of deposit held at other financial institutions 1,055 — 1,055 — 1,055 Securities available for sale 754,755 — 754,755 — 754,755 Securities held to maturity 228,894 — 227,892 — 227,892 Loans held for sale 23,699 — 23,699 — 23,699 Net loans 1,757,039 — — 1,727,188 1,727,188 Restricted equity securities 11,843 n/a n/a n/a n/a Servicing rights, net 3,621 — — 5,015 5,015 Accrued interest receivable 9,931 — 5,172 4,759 9,931 Financial liabilities Deposits $ 2,391,818 $ 1,551,461 $ 836,444 $ — $ 2,387,905 Federal funds purchased and repurchase agreements 83,301 — 83,301 — 83,301 Federal Home Loan Bank advances 132,000 — 131,098 — 131,098 Subordinated notes, net 58,337 — — 61,762 61,762 Accrued interest payable 1,924 154 1,075 695 1,924

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Computation of Earnings per Share	The factors used in the earnings per share computation follow: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Basic Net income available to common shareholders $ 8,866 $ 7,508 $ 16,800 $ 13,718 Less: earnings allocated to participating securities (76 ) (86 ) (140 ) (149 ) Net income allocated to common shareholders $ 8,790 $ 7,422 $ 16,660 $ 13,569 Weighted average common shares outstanding including participating securities 13,118,201 10,654,351 13,083,797 10,617,328 Less: Participating securities (111,977 ) (121,475 ) (109,166 ) (115,270 ) Average shares 13,006,224 10,532,876 12,974,631 10,502,058 Basic earnings per common share $ 0.68 $ 0.70 $ 1.28 $ 1.29 Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Diluted Net income allocated to common shareholders $ 8,790 $ 7,422 $ 16,660 $ 13,569 Weighted average common shares outstanding for basic earnings per common share 13,006,224 10,532,876 12,974,631 10,502,058 Add: Dilutive effects of assumed exercises of stock options 695,199 653,339 701,947 638,041 Add: Dilutive effects of assumed exercises of stock warrants 339 13,015 3,157 12,721 Average shares and dilutive potential common shares 13,701,762 11,199,230 13,679,735 11,152,820 Dilutive earnings per common share $ 0.64 $ 0.66 $ 1.22 $ 1.22

Subordinated Debt Issuance (Tab

Subordinated Debt Issuance (Tables)	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Summary of Terms of Each Subordinated Note offering	The following table summarizes the terms of each subordinated note offering: March 2016 June 2016 Principal amount issued $40,000 $20,000 Maturity date March 30, 2026 July 1, 2026 Initial fixed interest rate 6.875% 7.00% Initial interest rate period 5 years 5 years First interest rate change date March 30, 2021 July 1, 2021 Interest payment frequency through year five* Semiannually Semiannually Interest payment frequency after five years* Quarterly Quarterly Interest repricing index and margin 3-month LIBOR plus 5.636% 3-month LIBOR plus 6.04% Repricing frequency after five years Quarterly Quarterly * The Company currently may not make interest payments on either series of subordinated notes without prior written approval from its primary regulatory agencies. Through June 30, 2017 all interest payments have been made in accordance with the terms of the agreements.

Securities - Summary of Amortiz

Securities - Summary of Amortized Cost and Fair Value of Securities Available for Sale (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 1,027,448	$ 767,063
Gross Unrealized Gains	3,485	1,214
Gross Unrealized Losses	(9,882)	(13,522)
Fair Value	1,021,051	754,755
U.S. Government Sponsored Entities and Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	60,129
Gross Unrealized Losses	(124)
Fair Value	60,005
Mortgage-Backed Securities: Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	770,350	614,344
Gross Unrealized Gains	1,522	949
Gross Unrealized Losses	(6,530)	(8,208)
Fair Value	765,342	607,085
Mortgage-Backed Securities: Commercial [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	15,745	19,439
Gross Unrealized Gains		27
Gross Unrealized Losses	(21)	(132)
Fair Value	15,724	19,334
State and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	161,452	133,280
Gross Unrealized Gains	1,963	238
Gross Unrealized Losses	(3,198)	(5,182)
Fair Value	160,217	$ 128,336
U.S. Treasury Bills [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	19,772
Gross Unrealized Losses	(9)
Fair Value	$ 19,763

Securities - Schedule of Amorti

Securities - Schedule of Amortized Cost and Fair Value of Securities Held to Maturity Portfolio (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 222,355	$ 228,894
Gross Unrecognized Gains	4,216	1,548
Gross Unrecognized Losses	(1,925)	(2,550)
Fair Value	224,646	227,892
U.S. Government Sponsored Entities and Agencies [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost		203
Gross Unrecognized Gains		6
Fair Value		209
Mortgage-Backed Securities: Residential [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	100,344	106,169
Gross Unrecognized Gains	358	328
Gross Unrecognized Losses	(1,900)	(2,343)
Fair Value	98,802	104,154
State and Political Subdivisions [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	122,011	122,522
Gross Unrecognized Gains	3,858	1,214
Gross Unrecognized Losses	(25)	(207)
Fair Value	$ 125,844	$ 123,529

Securities - Summary of Proceed

Securities - Summary of Proceeds from Sales and Calls of Securities Available for Sale and Associated Gains and Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Available-for-sale Securities [Abstract]
Proceeds	$ 61,190	$ 13,491	$ 61,190	$ 62,263
Gross gains	246	797	246	1,490
Gross losses	$ (126)	$ (2)	$ (126)	$ (385)

Securities - Schedule of Amor30

Securities - Schedule of Amortized Cost and Fair Value of Investment Securities Portfolio by Contractual Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Available for sale
Amortized Cost, One year or less	$ 44,767
Amortized Cost, Over one year through five years	50,135
Amortized Cost, Over five years through ten years	4,710
Amortized Cost, Over ten years	141,741
Amortized Cost	1,027,448	$ 767,063
Held to maturity
Amortized Cost, Over one year through five years	1,104
Amortized Cost, Over five years through ten years	5,179
Amortized Cost, Over ten years	115,728
Amortized Cost	222,355	228,894
Available for sale
Fair Value, One year or less	44,646
Fair Value, Over one year through five years	50,012
Fair Value, Over five years through ten years	4,846
Fair Value, Over ten years	140,481
Fair Value, Total	1,021,051	754,755
Held to maturity
Fair Value, Over one year through five years	1,140
Fair Value, Over five years through ten years	5,339
Fair Value, Over ten years	119,365
Fair Value, Total	224,646	227,892
Mortgage-Backed Securities: Residential [Member]
Available for sale
Amortized Cost, Mortgage-backed securities not due at a single maturity date	770,350
Amortized Cost	770,350	614,344
Held to maturity
Amortized Cost, Mortgage-backed securities not due at a single maturity date	100,344
Amortized Cost	100,344	106,169
Available for sale
Fair Value, Mortgage-backed securities not due at a single maturity date	765,342
Fair Value, Total	765,342	607,085
Held to maturity
Fair Value, Mortgage-backed securities not due at a single maturity date	98,802
Fair Value, Total	98,802	104,154
Mortgage-Backed Securities: Commercial [Member]
Available for sale
Amortized Cost, Mortgage-backed securities not due at a single maturity date	15,745
Amortized Cost	15,745	19,439
Available for sale
Fair Value, Mortgage-backed securities not due at a single maturity date	15,724
Fair Value, Total	$ 15,724	$ 19,334

Securities - Additional Informa

Securities - Additional Information (Detail) $ in Thousands	Jun. 30, 2017USD ($)Securities	Dec. 31, 2016USD ($)Securities
Marketable Securities [Line Items]
Carrying value of pledged securities | $	$ 958,128	$ 808,224
Other than US Government Sponsored Entities and Agencies [Member]
Marketable Securities [Line Items]
Amount of holdings of securities of any one issuer | Securities	0	0

Securities - Schedule of Unreal

Securities - Schedule of Unrealized Losses and Fair Value by Major Security Type (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule Of Held To Maturity And Available For Sale Securities [Line Items]
Less Than 12 Months Available for Sale Fair Value	$ 668,654	$ 581,188
Less Than 12 Months Available for sale Unrealized Losses	(8,762)	(13,147)
12 Months or Longer Available for sale Fair Value	37,199	9,907
12 Months or Longer Available for sale Unrealized Losses	(1,120)	(375)
Available for sale Fair Value, Total	705,853	591,095
Available for sale Unrealized Losses, Total	(9,882)	(13,522)
Less Than 12 Months Held to maturity Fair Value	69,723	108,430
Less Than 12 Months Held to maturity Unrealized Losses	(1,560)	(2,451)
12 Months or Longer Held to maturity Fair Value	13,830	3,025
12 Months or Longer Held to maturity Unrealized Losses	(365)	(99)
Held to maturity Fair Value, Total	83,553	111,455
Held to maturity Unrealized Losses, Total	(1,925)	(2,550)
U.S. Government Sponsored Entities and Agencies [Member]
Schedule Of Held To Maturity And Available For Sale Securities [Line Items]
Less Than 12 Months Available for Sale Fair Value	60,005
Less Than 12 Months Available for sale Unrealized Losses	(124)
Available for sale Fair Value, Total	60,005
Available for sale Unrealized Losses, Total	(124)
Mortgage-Backed Securities: Residential [Member]
Schedule Of Held To Maturity And Available For Sale Securities [Line Items]
Less Than 12 Months Available for Sale Fair Value	498,174	465,416
Less Than 12 Months Available for sale Unrealized Losses	(5,958)	(7,833)
12 Months or Longer Available for sale Fair Value	29,009	9,907
12 Months or Longer Available for sale Unrealized Losses	(572)	(375)
Available for sale Fair Value, Total	527,183	475,323
Available for sale Unrealized Losses, Total	(6,530)	(8,208)
Less Than 12 Months Held to maturity Fair Value	68,296	89,523
Less Than 12 Months Held to maturity Unrealized Losses	(1,535)	(2,244)
12 Months or Longer Held to maturity Fair Value	13,830	3,025
12 Months or Longer Held to maturity Unrealized Losses	(365)	(99)
Held to maturity Fair Value, Total	82,126	92,548
Held to maturity Unrealized Losses, Total	(1,900)	(2,343)
Mortgage-Backed Securities: Commercial [Member]
Schedule Of Held To Maturity And Available For Sale Securities [Line Items]
Less Than 12 Months Available for Sale Fair Value	15,724	15,752
Less Than 12 Months Available for sale Unrealized Losses	(21)	(132)
Available for sale Fair Value, Total	15,724	15,752
Available for sale Unrealized Losses, Total	(21)	(132)
State and Political Subdivisions [Member]
Schedule Of Held To Maturity And Available For Sale Securities [Line Items]
Less Than 12 Months Available for Sale Fair Value	74,988	100,020
Less Than 12 Months Available for sale Unrealized Losses	(2,650)	(5,182)
12 Months or Longer Available for sale Fair Value	8,190
12 Months or Longer Available for sale Unrealized Losses	(548)
Available for sale Fair Value, Total	83,178	100,020
Available for sale Unrealized Losses, Total	(3,198)	(5,182)
Less Than 12 Months Held to maturity Fair Value	1,427	18,907
Less Than 12 Months Held to maturity Unrealized Losses	(25)	(207)
Held to maturity Fair Value, Total	1,427	18,907
Held to maturity Unrealized Losses, Total	(25)	$ (207)
U.S. Treasury Bills [Member]
Schedule Of Held To Maturity And Available For Sale Securities [Line Items]
Less Than 12 Months Available for Sale Fair Value	19,763
Less Than 12 Months Available for sale Unrealized Losses	(9)
Available for sale Fair Value, Total	19,763
Available for sale Unrealized Losses, Total	$ (9)

Loans - Summary of Loans (Detai

Loans - Summary of Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 2,010,262		$ 1,771,526
Deferred loan fees, net	(889)		(793)
Total loans that are not PCI loans	2,009,373		1,770,733
Allowance for loan losses	(18,689)	$ (18,105)	(16,553)	$ (14,253)	$ (12,676)	$ (11,587)
Net loans	1,993,266		1,757,039
Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Construction and land development	497,940		489,562
Allowance for loan losses	(3,796)	(3,837)	(3,776)	(3,624)	(3,378)	(3,186)
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	422,823		376,476
Allowance for loan losses	(6,894)	(6,885)	(6,068)	(4,655)	(3,875)	(3,358)
Consumer and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer and other	3,936		3,359
Allowance for loan losses	(49)	$ (52)	(45)	$ (49)	$ (59)	$ (36)
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,582		2,859
PCI Loans [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,995		1,969
Commercial Real Estate Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonfarm, nonresidential	550,112		458,569
Commercial Real Estate Financing Receivable [Member] | PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	395		394
Commercial Real Estate, Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other	32,307		38,571
Real Estate Residential Closed-end 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Closed-end 1-4 family	346,744		254,474
Real Estate Residential Closed-end 1-4 Family [Member] | PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	192		496
Residential Real Estate, Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other	$ 156,400		$ 150,515

Loans - Activity in Allowance f

Loans - Activity in Allowance for Loan Losses by Portfolio Segment (Detail) - 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	$ 18,105	$ 12,676	$ 16,553	$ 11,587
Provision for loan losses	573	1,567	2,428	2,703
Loans charged-off	(3)	(4)	(326)	(80)
Recoveries	14	14	34	43
Total ending allowance balance	18,689	14,253	18,689	14,253
Construction and Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	3,837	3,378	3,776	3,186
Provision for loan losses	(41)	246	20	438
Total ending allowance balance	3,796	3,624	3,796	3,624
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	4,659	3,564	4,266	3,146
Provision for loan losses	352	301	745	719
Total ending allowance balance	5,011	3,865	5,011	3,865
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	2,672	1,800	2,398	1,861
Provision for loan losses	255	248	517	159
Loans charged-off	(1)		(1)
Recoveries	13	12	25	40
Total ending allowance balance	2,939	2,060	2,939	2,060
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	6,885	3,875	6,068	3,358
Provision for loan losses	9	780	1,126	1,362
Loans charged-off			(300)	(65)
Total ending allowance balance	6,894	4,655	6,894	4,655
Consumer and Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	52	59	45	36
Provision for loan losses	(2)	(8)	20	25
Loans charged-off	(2)	(4)	(25)	(15)
Recoveries	1	2	9	3
Total ending allowance balance	$ 49	$ 49	$ 49	$ 49

Loans - Additional Information

Loans - Additional Information (Detail) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)	Mar. 31, 2017USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable carrying amount	$ 2,010,262	$ 1,771,526
Unpaid principal amount	9,829	11,686
Allowance for loan losses	$ 18,689	$ 16,553	$ 18,105	$ 14,253	$ 12,676	$ 11,587
Number of loans modified as troubled debt restructuring	1	1
Loans modified as troubled debt restructuring, Amount	$ 698	$ 698
Non PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable carrying amount	59,892
Unpaid principal amount	61,550
Estimated credit discount	1,658
Allowance for loan losses	6
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses for PCI loans	$ 11	$ 0

Loans - Allowance for Loan Loss

Loans - Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment and Based on Impairment Method (Detail) - 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 And Recorded Investment In Loans [Line Items]
Allowance for loan losses, Individually evaluated for impairment	$ 933		$ 1,024
Allowance for loan losses, Collectively evaluated for impairment	17,745		15,529
Total ending allowance balance	18,689	$ 18,105	16,553	$ 14,253	$ 12,676	$ 11,587
Loans, Individually evaluated for impairment	8,235		9,909
Loans, Collectively evaluated for impairment	2,002,027		1,761,617
Aging of Recorded Investment, Total	2,012,844		1,774,385
PCI Loans [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Purchased credit-impaired loans	11		0
Purchased credit-impaired loans	2,582		2,859
Construction and Land Development [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	3,796		3,776
Total ending allowance balance	3,796	3,837	3,776	3,624	3,378	3,186
Loans, Individually evaluated for impairment	2,250		1,275
Loans, Collectively evaluated for impairment	495,690		488,287
Aging of Recorded Investment, Total	497,940		489,562
Commercial Real Estate [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	5,011		4,266
Total ending allowance balance	5,011	4,659	4,266	3,865	3,564	3,146
Loans, Individually evaluated for impairment	1,451		2,836
Loans, Collectively evaluated for impairment	580,968		494,304
Aging of Recorded Investment, Total	582,814		497,534
Commercial Real Estate [Member] | PCI Loans [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Purchased credit-impaired loans	395		394
Residential Real Estate [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	2,928		2,398
Total ending allowance balance	2,939	2,672	2,398	2,060	1,800	1,861
Loans, Individually evaluated for impairment	639		2,190
Loans, Collectively evaluated for impairment	502,505		402,799
Aging of Recorded Investment, Total	503,336		405,485
Residential Real Estate [Member] | PCI Loans [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Purchased credit-impaired loans	11
Purchased credit-impaired loans	192		496
Commercial and Industrial [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Allowance for loan losses, Individually evaluated for impairment	933		1,024
Allowance for loan losses, Collectively evaluated for impairment	5,961		5,044
Total ending allowance balance	6,894	6,885	6,068	4,655	3,875	3,358
Loans, Individually evaluated for impairment	3,888		3,608
Loans, Collectively evaluated for impairment	418,935		372,868
Aging of Recorded Investment, Total	424,818		378,445
Commercial and Industrial [Member] | PCI Loans [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Purchased credit-impaired loans	1,995		1,969
Consumer and Other [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	49		45
Total ending allowance balance	49	$ 52	45	$ 49	$ 59	$ 36
Loans, Individually evaluated for impairment	7
Loans, Collectively evaluated for impairment	3,929		3,359
Aging of Recorded Investment, Total	$ 3,936		$ 3,359

Loans - Summary of Impaired Loa

Loans - Summary of Impaired Loans by Class of Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	$ 6,741		$ 6,741		$ 8,822
Unpaid Principal Balance	9,829		9,829		11,686
Recorded Investment, With no allowance recorded	5,147		5,147		7,235
Recorded Investment	8,235		8,235		9,909
Unpaid Principal Balance, With an allowance recorded	3,088		3,088		2,864
Recorded Investment, With an allowance recorded	3,088		3,088		2,674
Allowance for Loan Losses Allocated	933		933		1,024
Average Recorded Investment, With no allowance recorded	5,847	$ 2,675	6,369	$ 3,222
Average Recorded Investment, With an allowance recorded	2,855	163	2,720	125
Average Recorded Investment	8,702	2,838	9,089	3,347
Commercial Real Estate Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	3,037		3,037		4,423
Recorded Investment, With no allowance recorded	1,451		1,451		2,836
Average Recorded Investment, With no allowance recorded	2,242	1,094	3,185	1,248
Real Estate Residential Closed-end 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	399		399		2,069
Recorded Investment, With no allowance recorded	399		399		2,069
Average Recorded Investment, With no allowance recorded	604	413	1,202	574
Residential Real Estate, Other [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	248		248		121
Recorded Investment, With no allowance recorded	240		240		121
Average Recorded Investment, With no allowance recorded	181	754	151	733
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	800		800		934
Recorded Investment, With no allowance recorded	800		800		934
Unpaid Principal Balance, With an allowance recorded	3,088		3,088		2,864
Recorded Investment, With an allowance recorded	3,088		3,088		2,674
Allowance for Loan Losses Allocated	933		933		1,024
Average Recorded Investment, With no allowance recorded	568	263	705	142
Average Recorded Investment, With an allowance recorded	2,855	163	2,720	125
Construction and Land Development [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	2,250		2,250		1,275
Recorded Investment, With no allowance recorded	2,250		2,250		$ 1,275
Average Recorded Investment, With no allowance recorded	2,250	121	1,125	510
Consumer and Other [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	7		7
Recorded Investment, With no allowance recorded	7		7
Average Recorded Investment, With no allowance recorded	$ 2	$ 30	$ 1	$ 15

Loans - Schedule of Recorded In

Loans - Schedule of Recorded Investment in Nonaccrual and Loans Past Due Over 90 Days on Accrual by Class of Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Nonaccrual	$ 3,366	$ 3,630
Recorded Investment, Loans Past Due Over 90 Days	533	2,552
Commercial Real Estate Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Nonaccrual	835	835
Real Estate Residential Closed-end 1-4 Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Nonaccrual	39
Recorded Investment, Loans Past Due Over 90 Days	425	452
Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Loans Past Due Over 90 Days		1,950
Commercial and Industrial Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Nonaccrual	2,374	2,674
Recorded Investment, Loans Past Due Over 90 Days	108	150
Residential Real Estate, Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Nonaccrual	$ 118	$ 121

Loans - Schedule of Aging of Re

Loans - Schedule of Aging of Recorded Investment in Past Due Loans by Class of Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Nonaccrual	$ 3,366	$ 3,630
Aging of Recorded Investment, Total Past Due	6,011	8,089
Aging of Recorded Investment, Loans Not Past Due	2,004,251	1,763,437
Aging of Recorded Investment, Total	2,012,844	1,774,385
Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	210	2,330
Aging of Recorded Investment, Loans Not Past Due	497,730	487,232
Aging of Recorded Investment, Total	497,940	489,562
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Nonaccrual	2,374	2,674
Aging of Recorded Investment, Total Past Due	2,730	3,018
Aging of Recorded Investment, Loans Not Past Due	420,093	373,458
Aging of Recorded Investment, Total	424,818	378,445
Consumer and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	13
Aging of Recorded Investment, Loans Not Past Due	3,923	3,359
Aging of Recorded Investment, Total	3,936	3,359
PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, PCI Loans	2,582	2,859
PCI Loans [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, PCI Loans	1,995	1,969
Commercial Real Estate Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Nonaccrual	835	835
Aging of Recorded Investment, Total Past Due	835	1,499
Aging of Recorded Investment, Loans Not Past Due	549,277	457,070
Aging of Recorded Investment, Total	550,507	458,963
Commercial Real Estate Financing Receivable [Member] | PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, PCI Loans	395	394
Commercial Real Estate, Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Loans Not Past Due	32,307	38,571
Aging of Recorded Investment, Total	32,307	38,571
Real Estate Residential Closed-end 1-4 Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Nonaccrual	39
Aging of Recorded Investment, Total Past Due	2,105	890
Aging of Recorded Investment, Loans Not Past Due	344,639	253,584
Aging of Recorded Investment, Total	346,936	254,970
Real Estate Residential Closed-end 1-4 Family [Member] | PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, PCI Loans	192	496
Residential Real Estate, Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Nonaccrual	118	121
Aging of Recorded Investment, Total Past Due	118	352
Aging of Recorded Investment, Loans Not Past Due	156,282	150,163
Aging of Recorded Investment, Total	156,400	150,515
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	827	1,858
30 to 59 Days Past Due [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	210	380
30 to 59 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	237	155
30 to 59 Days Past Due [Member] | Consumer and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	13
30 to 59 Days Past Due [Member] | Commercial Real Estate Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due		664
30 to 59 Days Past Due [Member] | Real Estate Residential Closed-end 1-4 Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	367	428
30 to 59 Days Past Due [Member] | Residential Real Estate, Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due		231
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	1,285	49
60 to 89 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	11	39
60 to 89 Days Past Due [Member] | Real Estate Residential Closed-end 1-4 Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	1,274	10
Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	533	2,552
Greater Than 90 Days Past Due [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due		1,950
Greater Than 90 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	108	150
Greater Than 90 Days Past Due [Member] | Real Estate Residential Closed-end 1-4 Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	$ 425	$ 452

Loans - Summary of Risk Categor

Loans - Summary of Risk Category of Loans by Class of Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Risk Category Of Loans [Line Items]
Total Loans	$ 2,012,844	$ 1,774,385
Construction and Land Development [Member]
Risk Category Of Loans [Line Items]
Total Loans	497,940	489,562
Commercial and Industrial [Member]
Risk Category Of Loans [Line Items]
Total Loans	424,818	378,445
Consumer and Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	3,936	3,359
Commercial Real Estate Financing Receivable [Member]
Risk Category Of Loans [Line Items]
Total Loans	550,507	458,963
Commercial Real Estate, Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	32,307	38,571
Real Estate Residential Closed-end 1-4 Family [Member]
Risk Category Of Loans [Line Items]
Total Loans	346,936	254,970
Residential Real Estate, Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	156,400	150,515
Pass [Member]
Risk Category Of Loans [Line Items]
Total Loans	1,975,319	1,754,256
Pass [Member] | Construction and Land Development [Member]
Risk Category Of Loans [Line Items]
Total Loans	495,690	488,287
Pass [Member] | Commercial and Industrial [Member]
Risk Category Of Loans [Line Items]
Total Loans	403,818	373,243
Pass [Member] | Consumer and Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	3,924	3,359
Pass [Member] | Commercial Real Estate Financing Receivable [Member]
Risk Category Of Loans [Line Items]
Total Loans	538,447	449,373
Pass [Member] | Commercial Real Estate, Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	32,307	38,571
Pass [Member] | Real Estate Residential Closed-end 1-4 Family [Member]
Risk Category Of Loans [Line Items]
Total Loans	345,863	251,919
Pass [Member] | Residential Real Estate, Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	155,270	149,504
Special Mention [Member]
Risk Category Of Loans [Line Items]
Total Loans	25,578	1,847
Special Mention [Member] | Commercial and Industrial [Member]
Risk Category Of Loans [Line Items]
Total Loans	15,475
Special Mention [Member] | Consumer and Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	5
Special Mention [Member] | Commercial Real Estate Financing Receivable [Member]
Risk Category Of Loans [Line Items]
Total Loans	10,098	1,847
Substandard [Member]
Risk Category Of Loans [Line Items]
Total Loans	11,947	18,282
Substandard [Member] | Construction and Land Development [Member]
Risk Category Of Loans [Line Items]
Total Loans	2,250	1,275
Substandard [Member] | Commercial and Industrial [Member]
Risk Category Of Loans [Line Items]
Total Loans	5,525	5,202
Substandard [Member] | Consumer and Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	7
Substandard [Member] | Commercial Real Estate Financing Receivable [Member]
Risk Category Of Loans [Line Items]
Total Loans	1,962	7,743
Substandard [Member] | Real Estate Residential Closed-end 1-4 Family [Member]
Risk Category Of Loans [Line Items]
Total Loans	1,073	3,051
Substandard [Member] | Residential Real Estate, Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	$ 1,130	$ 1,011

Loan Servicing - Schedule of Lo

Loan Servicing - Schedule of Loans Serviced Not Reported as Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Federal Home Loan Mortgage Corporation [Member]
Loans Servicing For Institutional Investors [Line Items]
Loan servicing rights, at fair value	$ 503,107	$ 499,385
Other Serviced Loans [Member]
Loans Servicing For Institutional Investors [Line Items]
Loan servicing rights, at fair value	$ 2,258	$ 2,954

Loan Servicing - Components of

Loan Servicing - Components of Net Loan Servicing Fees (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Transfers and Servicing [Abstract]
Loan servicing fees	$ 319	$ 301	$ 639	$ 594
Amortization of loan servicing fees	(266)	(305)	(479)	(556)
Change in impairment	0	0	0	0
Total	$ 53	$ (4)	$ 160	$ 38

Loan Servicing - Additional Inf

Loan Servicing - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Transfers and Servicing [Abstract]
Fair value of servicing rights	$ 5,000	$ 4,635
Weighted average discount rate	10.50%	10.50%
Weighted average prepayment speed	9.50%	10.20%

Securities Sold Under Agreeme44

Securities Sold Under Agreement to Repurchase - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Total short-term borrowings	$ 32,132	$ 36,496
Carrying value of securities used to secure borrowings	$ 41,397	$ 41,136

Securities Sold Under Agreeme45

Securities Sold Under Agreement to Repurchase - Additional Details of Securities Sold under Agreement to Repurchase (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets Sold under Agreements to Repurchase [Line Items]
Market value of securities pledged	$ 42,610	$ 41,656
Borrowings related to pledged amounts	$ 32,132	$ 36,496
Market value pledged as a % of borrowings	133.00%	114.00%
U.S. Government Sponsored Entities and Agencies [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Market value of securities pledged		$ 209
Mortgage-Backed Securities: Residential [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Market value of securities pledged	$ 698	117
State and Political Subdivisions [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Market value of securities pledged	41,912	41,330
Borrowings related to pledged amounts	$ 32,132	$ 36,496
Market value pledged as a % of borrowings	130.00%	113.00%

Share-Based Payments - Addition

Share-Based Payments - Additional Information (Detail) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)$ / sharesshares	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)Plans$ / sharesshares	Jun. 30, 2016USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants exercised			12,461	3,775
Number of share-based compensation plans | Plans			2
Compensation cost charged against income | $	$ 788	$ 537	$ 1,235	$ 795
Excess tax benefit related to vesting of restricted stock and exercise of stock options | $	357	509	450	509
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Excess tax benefit related to vesting of restricted stock and exercise of stock options | $	90	$ 90	90	90
2007 Omnibus Equity Incentive Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, nonvested stock options | $	$ 2,294		$ 2,294
Unrecognized compensation cost, period of recognition			3 years 10 months 25 days
Total fair value of shares vested | $			$ 1,125	$ 603
2007 Omnibus Equity Incentive Plan [Member] | Restricted Stock [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of shares			3 years
2007 Omnibus Equity Incentive Plan [Member] | Restricted Stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of shares			5 years
2007 Omnibus Equity Incentive Plan [Member] | Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	4,000,000		4,000,000
Options contractual term			10 years
Number of shares authorized for issuance	1,960,041		1,960,041
Weighted average fair value of options | $ / shares			$ 14.38	$ 9.47
Unrecognized compensation cost, nonvested stock options | $	$ 6,147		$ 6,147
Unrecognized compensation cost, period of recognition			1 year 10 months 25 days
2007 Omnibus Equity Incentive Plan [Member] | Stock Option [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of shares			3 years
2007 Omnibus Equity Incentive Plan [Member] | Stock Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of shares			5 years
2010 Offering [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant shares issued			32,425
Warrant exercise price per share | $ / shares	$ 12		$ 12
Shares issuable upon exercise of warrants to purchase common stock	20		20
Warrants exercisable period			7 years
Warrants outstanding	0		0
Warrant expiration date			Mar. 30, 2017
2017 Omnibus Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	5,000,000		5,000,000
Number of shares authorized for issuance	4,790,739		4,790,739

Share-Based Payments - Summary

Share-Based Payments - Summary of Stock Warrant Activity (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Intrinsic value of warrants exercised	$ 329	$ 73
Cash received from warrants exercised	$ 150	$ 45

Share-Based Payments - Fair Val

Share-Based Payments - Fair Value Assumptions of Stock Options (Detail) - 2007 Omnibus Equity Incentive Plan [Member] - Stock Option [Member]	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.03%	1.63%
Expected term	6 years 8 months 12 days	7 years 6 months
Expected stock price volatility	33.36%	29.46%
Dividend yield	0.03%	0.24%

Share-Based Payments - Summar49

Share-Based Payments - Summary of Company's Stock Option Activities (Detail) - 2007 Omnibus Equity Incentive Plan [Member] - Stock Option [Member] - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding, Beginning Balance	1,395,016
Shares, Granted	239,070
Shares, Exercised	(116,856)
Shares, Forfeited, expired, or canceled	(2,210)
Shares, Outstanding, Ending Balance	1,515,020	1,395,016
Shares, Vested or expected to vest	1,439,269
Shares, Exercisable at period end	792,366
Weighted Average Exercise Price, Outstanding, Beginning Balance	$ 16.70
Weighted Average Exercise Price, Granted	37.85
Weighted Average Exercise Price, Exercised	11.63
Weighted Average Exercise Price, Forfeited, expired, or cancelled	23.06
Weighted Average Exercise Price, Outstanding, Ending Balance	20.42	$ 16.70
Weighted Average Exercise Price, Vested or expected to vest	20.42
Weighted Average Exercise Price, Exercisable at period end	$ 13.21
Weighted Average Remaining Contractual Term, Outstanding at beginning of year	6 years 9 months 7 days	6 years 4 months 20 days
Weighted Average Remaining Contractual Term, Vested or expected to vest	6 years 9 months 7 days
Weighted Average Remaining Contractual Term, Exercisable at period end	5 years 18 days
Aggregate Intrinsic Value, Outstanding, at beginning of year	$ 31,563	$ 35,090
Aggregate Intrinsic Value, Vested or expected to vest	29,985
Aggregate Intrinsic Value, Exercisable at period end	$ 22,143

Share-Based Payments - Summar50

Share-Based Payments - Summary of Stock Options Exercised (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Stock options exercised:
Cash received from options exercised	$ 1,055	$ 975
2007 Omnibus Equity Incentive Plan [Member] | Stock Option [Member]
Stock options exercised:
Intrinsic value of options exercised	3,460	1,648
Cash received from options exercised	1,055	975
Tax benefit realized from option exercises	$ 360	$ 419

Share-Based Payments - Summar51

Share-Based Payments - Summary of Activity for Nonvested Restricted Share Awards (Detail) - Restricted Stock [Member] - 2007 Omnibus Equity Incentive Plan [Member]	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Non-vested, Beginning Balance | shares	106,458
Shares, Granted | shares	27,282
Shares, Vested | shares	(23,451)
Shares, Forfeited | shares	(371)
Shares, Non-vested, Ending Balance | shares	109,918
Weighted-Average Grant-Date Fair Value, Non-vested, Beginning Balance | $ / shares	$ 19.81
Weighted-Average Grant-Date Fair Value, Granted | $ / shares	37.35
Weighted-Average Grant-Date Fair Value, Vested | $ / shares	18.93
Weighted-Average Grant-Date Fair Value, Forfeited | $ / shares	26.62
Weighted-Average Grant-Date Fair Value, Non-vested, Ending Balance | $ / shares	$ 24.85

Regulatory Capital Matters - Ad

Regulatory Capital Matters - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2017
Banking and Thrift [Abstract]
Capital conservation buffer	2.50%
Capital conservation buffer ratio to be phased in at beginning	0.625%
Capital conservation buffer phase in year	2,016
Capital conservation buffer period final year	2,019
Capital conservation buffer ratio during period	1.25%

Regulatory Capital Matters - Ac

Regulatory Capital Matters - Actual and Required Capital Amounts and Ratios (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital to risk-weighted assets, Actual Amount	$ 282,945	$ 263,693
Total Capital to risk-weighted assets, Actual Amount	360,152	338,675
Tier 1 (Core) Capital to risk weighted assets, Actual Amount	282,945	263,693
Tier 1 (Core) Capital to average assets, Actual Amount	$ 282,945	$ 263,693
Common equity Tier 1 capital to risk-weighted assets	11.54%	11.75%
Total Capital to risk weighted assets, Actual Ratio	14.69%	15.09%
Tier 1 (Core) Capital to risk weighted assets, Actual Ratio	11.54%	11.75%
Tier 1 (Core) Capital to average assets, Actual Ratio	8.21%	9.28%
Common equity Tier 1 capital to risk-weighted assets	$ 110,300	$ 101,022
Total Capital to risk weighted assets, Required For Capital Adequacy Purposes Amount	196,090	179,595
Tier 1 (Core) Capital to risk weighted assets, Required For Capital Adequacy Purposes Amount	147,067	134,696
Tier 1 (Core) Capital to average assets, Required For Capital Adequacy Purposes Amount	$ 137,848	$ 113,697
Common equity Tier 1 capital to risk-weighted assets	4.50%	4.50%
Total Capital to risk weighted assets, Required For Capital Adequacy Purposes Ratio	8.00%	8.00%
Tier 1 (Core) Capital to risk weighted assets, Required For Capital Adequacy Purposes Ratio	6.00%	6.00%
Tier 1 (Core) Capital to average assets, Required For Capital Adequacy Purposes Ratio	4.00%	4.00%
Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital to risk-weighted assets, Actual Amount	$ 337,486	$ 319,005
Total Capital to risk-weighted assets, Actual Amount	356,267	335,650
Tier 1 (Core) Capital to risk weighted assets, Actual Amount	337,486	319,005
Tier 1 (Core) Capital to average assets, Actual Amount	$ 337,486	$ 319,005
Common equity Tier 1 capital to risk-weighted assets	13.77%	14.18%
Total Capital to risk weighted assets, Actual Ratio	14.53%	14.92%
Tier 1 (Core) Capital to risk weighted assets, Actual Ratio	13.77%	14.18%
Tier 1 (Core) Capital to average assets, Actual Ratio	9.80%	11.22%
Common equity Tier 1 capital to risk-weighted assets	$ 110,301	$ 101,216
Total Capital to risk weighted assets, Required For Capital Adequacy Purposes Amount	196,091	179,939
Tier 1 (Core) Capital to risk weighted assets, Required For Capital Adequacy Purposes Amount	147,068	134,954
Tier 1 (Core) Capital to average assets, Required For Capital Adequacy Purposes Amount	$ 137,786	$ 113,697
Common equity Tier 1 capital to risk-weighted assets	4.50%	4.50%
Total Capital to risk weighted assets, Required For Capital Adequacy Purposes Ratio	8.00%	8.00%
Tier 1 (Core) Capital to risk weighted assets, Required For Capital Adequacy Purposes Ratio	6.00%	6.00%
Tier 1 (Core) Capital to average assets, Required For Capital Adequacy Purposes Ratio	4.00%	4.00%
Common equity Tier 1 capital to risk-weighted assets	$ 159,324	$ 146,201
Total Capital to risk weighted assets, To Be Well Capitalized Under Prompt Corrective Action Regulations Amount	245,114	224,924
Tier 1 (Core) Capital to risk weighted assets, To Be Well Capitalized Under Prompt Corrective Action Regulations Amount	196,091	179,939
Tier 1 (Core) Capital to average assets, To Be Well Capitalized Under Prompt Corrective Action Regulations Amount	$ 172,233	$ 142,122
Common equity Tier 1 capital to risk-weighted assets	6.50%	6.50%
Total Capital to risk weighted assets, To Be Well Capitalized Under Prompt Corrective Action Regulations Ratio	10.00%	10.00%
Tier 1 (Core) Capital to risk weighted assets, To Be Well Capitalized Under Prompt Corrective Action Regulations Ratio	8.00%	8.00%
Tier 1 (Core) Capital to average assets, To Be Well Capitalized Under Prompt Corrective Action Regulations Ratio	5.00%	5.00%

Fair Value - Additional informa

Fair Value - Additional information (Detail) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Fair Value Measurements Of Financial Instruments [Line Items]
Fair value measurements, valuation techniques			For securities where quoted prices are not available, fair values are calculated based on market prices of similar securities (Level 2), using matrix pricing. Matrix pricing is a mathematical technique commonly used to price debt securities that are not actively traded, values debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities' relationship to other benchmark quoted securities (Level 2 inputs).
Change in fair value related to loans held for sale	$ 2,067,000	$ 2,309,000	$ 4,401,000	$ 3,917,000
Additional provision for loan losses	573,000	1,567,000	2,428,000	2,703,000
Carrying amount of impaired loans with specific allocations	8,235,000		8,235,000		$ 9,909,000
Foreclosed assets	1,350,000		1,350,000		0
Write-down value during period	0	0	0	0
Loans Held for Sale [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Unpaid principal balance of loans held for sale	11,377,000		11,377,000		23,457,000
Change in fair value related to loans held for sale			347,000		242,000
Change in fair value of loans held for sale	(8,000)	194,000	105,000	231,000
Changes Measurement [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Additional provision for loan losses	194	$ 0	194	$ 0
Fair Value [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Carrying amount of impaired loans with specific allocations	$ 2,154		$ 2,154		$ 1,650
Maximum [Member] | Loans Held for Sale [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Term of loan			90 days		90 days

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	$ 1,021,051	$ 754,755
Loans held for sale	11,724	23,699
U.S. Government Sponsored Entities and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	60,005
Mortgage-Backed Securities: Residential [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	765,342	607,085
Mortgage-Backed Securities: Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	15,724	19,334
State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	160,217	128,336
U.S. Treasury Bills [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	19,763
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	1,021,051	754,755
Loans held for sale	11,724	23,699
Mortgage banking derivatives	568	229
Mortgage banking derivatives	(156)	(66)
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Sponsored Entities and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	60,005
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-Backed Securities: Residential [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	765,342	607,085
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-Backed Securities: Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	15,724	19,334
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	160,217	$ 128,336
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury Bills [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	$ 19,763

Fair Value - Carrying Amount an

Fair Value - Carrying Amount and Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Carrying Amount	$ 96,741	$ 90,927	$ 72,050	$ 52,394
Certificates of deposit held at other financial institutions	2,530	1,055
Securities available for sale	1,021,051	754,755
Securities held to maturity, Carrying Amount	222,355	228,894
Securities held to maturity, Fair Value	224,646	227,892
Loans held for sale, Fair Value	11,724	23,699
Net loans, Carrying Amount	1,993,266	1,757,039
Servicing rights, net, Carrying Amount	3,581	3,621
Servicing rights, net, Fair Value	5,000	4,635
Accrued interest receivable	11,217	9,931
Deposits, Carrying Amount	2,754,425	2,391,818
Federal funds purchased and repurchase agreements, Carrying Amount	42,082	83,301
Federal Home Loan Bank advances, Carrying Amount	287,000	132,000
Subordinated notes, net	58,426	58,337
Accrued interest payable	2,571	1,924
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents , Fair Value	96,741	90,927
Certificates of deposit held at other financial institutions, Fair Value	2,530	1,055
Securities available for sale	1,021,051	754,755
Securities held to maturity, Fair Value	224,646	227,892
Loans held for sale, Fair Value	11,724	23,699
Net loans, Fair Value	1,970,297	1,727,188
Restricted equity securities, Fair Value	0	0
Servicing rights, net, Fair Value	5,000	5,015
Accrued interest receivable	11,217	9,931
Deposits, Fair Value	2,751,109	2,387,905
Federal funds purchased and repurchase agreements, Fair Value	42,082	83,301
Federal Home Loan Bank advances, Fair Value	285,951	131,098
Subordinated notes, net	62,098	61,762
Accrued interest payable	2,571	1,924
Fair Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents , Fair Value	96,741	90,927
Restricted equity securities, Fair Value	0	0
Accrued interest receivable	6
Deposits, Fair Value	1,496,990	1,551,461
Accrued interest payable	33	154
Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Certificates of deposit held at other financial institutions, Fair Value	2,530	1,055
Securities available for sale	1,021,051	754,755
Securities held to maturity, Fair Value	224,646	227,892
Loans held for sale, Fair Value	11,724	23,699
Restricted equity securities, Fair Value	0	0
Accrued interest receivable	6,241	5,172
Deposits, Fair Value	1,254,119	836,444
Federal funds purchased and repurchase agreements, Fair Value	42,082	83,301
Federal Home Loan Bank advances, Fair Value	285,951	131,098
Accrued interest payable	1,850	1,075
Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans, Fair Value	1,970,297	1,727,188
Restricted equity securities, Fair Value	0	0
Servicing rights, net, Fair Value	5,000	5,015
Accrued interest receivable	4,970	4,759
Subordinated notes, net	62,098	61,762
Accrued interest payable	688	695
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Carrying Amount	96,741	90,927
Certificates of deposit held at other financial institutions	2,530	1,055
Securities available for sale	1,021,051	754,755
Securities held to maturity, Carrying Amount	222,355	228,894
Loans held for sale, Carrying Amount	11,724	23,699
Net loans, Carrying Amount	2,011,955	1,757,039
Restricted equity securities, Carrying Amount	17,326	11,843
Servicing rights, net, Carrying Amount	3,581	3,621
Accrued interest receivable	11,217	9,931
Deposits, Carrying Amount	2,754,425	2,391,818
Federal funds purchased and repurchase agreements, Carrying Amount	42,082	83,301
Federal Home Loan Bank advances, Carrying Amount	287,000	132,000
Subordinated notes, net	58,426	58,337
Accrued interest payable	$ 2,571	$ 1,924

Earnings Per Share - Computatio

Earnings Per Share - Computation of Earnings per Share (Detail) - 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 available to common shareholders	$ 8,866	$ 7,508	$ 16,800	$ 13,718
Less: earnings allocated to participating securities	(76)	(86)	(140)	(149)
Net income allocated to common shareholders	$ 8,790	$ 7,422	$ 16,660	$ 13,569
Weighted average common shares outstanding including participating securities	13,118,201	10,654,351	13,083,797	10,617,328
Less: Participating securities	(111,977)	(121,475)	(109,166)	(115,270)
Average shares	13,006,224	10,532,876	12,974,631	10,502,058
Basic earnings per common share	$ 0.68	$ 0.70	$ 1.28	$ 1.29
Diluted
Net income allocated to common shareholders	$ 8,790	$ 7,422	$ 16,660	$ 13,569
Weighted average common shares outstanding for basic earnings per common share	13,006,224	10,532,876	12,974,631	10,502,058
Add: Dilutive effects of assumed exercises of stock options	695,199	653,339	701,947	638,041
Add: Dilutive effects of assumed exercises of stock warrants	339	13,015	3,157	12,721
Average shares and dilutive potential common shares	13,701,762	11,199,230	13,679,735	11,152,820
Dilutive earnings per common share	$ 0.64	$ 0.66	$ 1.22	$ 1.22

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Stock options to purchase shares of the Company's common stock	302,570	239,587	205,285	150,877

Subordinated Debt Issuance - Ad

Subordinated Debt Issuance - Additional Information (Detail) - USD ($)	1 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Debt Instrument [Line Items]
Subordinated notes, net of issuance costs			$ 58,426,000		$ 58,426,000		$ 58,337,000
Amortization of debt issuance costs					89,000	$ 34,000
Subordinated Debt [Member]
Debt Instrument [Line Items]
Notes, Aggregate principal amount			60,000,000		60,000,000
Amortization of debt issuance costs			$ 45,000	$ 34,000	$ 89,000	34,000
Subordinated Debt [Member] | March 2016 Subordinated Notes [Member]
Debt Instrument [Line Items]
Notes, Aggregate principal amount		$ 40,000,000
Notes, Interest rate		6.875%
Notes, Issuance cost		$ 1,382,000
Term of notes		10 years
Subordinated Debt [Member] | June 2016 Subordinated Notes [Member]
Debt Instrument [Line Items]
Notes, Aggregate principal amount	$ 20,000,000			$ 20,000,000		$ 20,000,000
Notes, Interest rate	7.00%			7.00%		7.00%
Notes, Issuance cost	$ 404,000			$ 404,000		$ 404,000
Term of notes	10 years

Subordinated Debt Issuance - Su

Subordinated Debt Issuance - Summary of Terms of Each Subordinated Note offering (Detail) - Subordinated Debt [Member] - USD ($)	1 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017
Debt Instrument [Line Items]
Principal amount issued			$ 60,000,000
March 2016 Subordinated Notes [Member]
Debt Instrument [Line Items]
Principal amount issued		$ 40,000,000
Maturity date		Mar. 30, 2026
Initial fixed interest rate		6.875%
Initial interest rate period		10 years
First interest rate change date		Mar. 30, 2021
Interest payment frequency through year five		Semiannually
Interest payment frequency after five years		Quarterly
March 2016 Subordinated Notes [Member] | Initial Term [Member]
Debt Instrument [Line Items]
Initial interest rate period		5 years
June 2016 Subordinated Notes [Member]
Debt Instrument [Line Items]
Principal amount issued	$ 20,000,000
Maturity date	Jul. 1, 2026
Initial fixed interest rate	7.00%
Initial interest rate period	10 years
First interest rate change date	Jul. 1, 2021
Interest payment frequency through year five	Semiannually
Interest payment frequency after five years	Quarterly
June 2016 Subordinated Notes [Member] | Initial Term [Member]
Debt Instrument [Line Items]
Initial interest rate period	5 years
LIBOR [Member] | March 2016 Subordinated Notes [Member]
Debt Instrument [Line Items]
Interest repricing index and margin		3-month LIBOR plus 5.636%
Interest payment frequency through year five		Quarterly
LIBOR [Member] | June 2016 Subordinated Notes [Member]
Debt Instrument [Line Items]
Interest repricing index and margin	3-month LIBOR plus 6.04%
Interest payment frequency through year five	Quarterly