Franklin Financial Network (FSB) 10-Q 10 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 28, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
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		13,092,748

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
ASSETS
Cash and due from financial institutions	$ 114,664	$ 90,927
Certificates of deposit at other financial institutions	2,035	1,055
Securities available for sale	1,073,293	754,755
Securities held to maturity (fair value 2017-$225,337 and 2016-$227,892)	226,056	228,894
Loans held for sale, at fair value	12,682	23,699
Loans	1,949,715	1,773,592
Allowance for loan losses	(18,105)	(16,553)
Net loans	1,931,610	1,757,039
Restricted equity securities, at cost	14,978	11,843
Premises and equipment, net	10,231	9,551
Accrued interest receivable	10,516	9,931
Bank owned life insurance	23,422	23,267
Deferred tax asset	15,824	15,013
Foreclosed assets	1,315	0
Servicing rights, net	3,593	3,621
Goodwill	9,124	9,124
Core deposit intangible, net	1,353	1,480
Other assets	4,092	2,990
Total assets	3,454,788	2,943,189
Deposits
Non-interest bearing	240,105	233,781
Interest bearing	2,577,107	2,158,037
Total deposits	2,817,212	2,391,818
Federal Home Loan Bank advances	217,000	132,000
Federal funds purchased and repurchase agreements	70,430	83,301
Subordinated notes, net	58,381	58,337
Accrued interest payable	1,993	1,924
Other liabilities	11,262	5,448
Total liabilities	3,176,278	2,672,828
Equity
Preferred stock, no par value: 1,000,000 shares authorized; no shares outstanding at March 31, 2017 and December 31, 2016
Common stock, no par value: 20,000,000 shares authorized; 13,064,110 and 13,036,954 issued at March 31, 2017 and December 31, 2016, respectively	218,959	218,354
Retained earnings	67,320	59,386
Accumulated other comprehensive loss	(7,872)	(7,482)
Total shareholders' equity	278,407	270,258
Noncontrolling interest in consolidated subsidiary	103	103
Total equity	278,510	270,361
Total liabilities and equity	$ 3,454,788	$ 2,943,189

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Held-to-maturity securities, fair value	$ 225,337	$ 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	20,000,000	20,000,000
Common stock shares issued	13,064,110	13,036,954

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest income and dividends
Loans, including fees	$ 22,560	$ 17,742
Securities:
Taxable	5,617	3,528
Tax-Exempt	2,020	1,122
Dividends on restricted equity securities	181	103
Federal funds sold and other	163	66
Total interest income	30,541	22,561
Interest expense
Deposits	5,246	3,077
Federal funds purchased and repurchase agreements	508	109
Federal Home Loan Bank advances	70	86
Subordinated notes and other borrowings	1,074	13
Total interest expense	6,898	3,285
Net interest income	23,643	19,276
Provision for loan losses	1,855	1,136
Net interest income after provision for loan losses	21,788	18,140
Noninterest income
Service charges on deposit accounts	30	49
Other service charges and fees	752	633
Net gains on sale of loans	2,334	1,608
Wealth management	593	368
Loan servicing fees, net	107	42
Gain on sale or call of securities		310
Net gain on sale of foreclosed assets	3	3
Other	189	72
Total noninterest income	4,008	3,085
Noninterest expense
Salaries and employee benefits	8,033	6,517
Occupancy and equipment	2,095	1,807
FDIC assessment expense	760	413
Marketing	267	217
Professional fees	1,035	1,094
Amortization of core deposit intangible	127	149
Other	1,959	1,634
Total noninterest expense	14,276	11,831
Income before income tax expense	11,520	9,394
Income tax expense	3,586	3,161
Net income	7,934	6,233
Dividends paid on Series A preferred stock		(23)
Net income available to common shareholders	$ 7,934	$ 6,210
Earnings per share:
Basic	$ 0.61	$ 0.59
Diluted	$ 0.58	$ 0.55

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 7,934	$ 6,233
Unrealized gains on securities:
Unrealized holding gain (loss) arising during the period	(641)	11,060
Reclassification adjustment for gains included in net income		(310)
Net unrealized gain (loss)	(641)	10,750
Tax effect	251	(4,217)
Total other comprehensive income (loss)	(390)	6,533
Comprehensive income	$ 7,545	$ 12,766

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	118		$ 118
Exercise of common stock options, net, number of shares			13,018
Exercise of common stock warrants	$ 38		$ 38
Exercise of common stock warrants, number of shares	3,150		3,150
Dividends paid on Series A preferred stock	$ (23)				$ (23)
Stock based compensation expense, net of restricted share forfeitures	258		$ 258
Stock based compensation expense, net of restricted share forfeitures, shares			2,378
Stock issued in conjunction with 401(k) employer match, net of distributions	(63)		$ (63)
Stock issued in conjunction with 401(k) employer match, net of distributions, number of shares			(3,331)
Net income	6,233			6,233
Other comprehensive (loss) income	6,533					6,533
Ending balance at Mar. 31, 2016	191,910		$ 148,135	37,562		6,213
Ending balance, shares at Mar. 31, 2016			10,586,592
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	177		$ 177
Exercise of common stock options, net, number of shares			20,268
Exercise of common stock warrants	$ 132		$ 132
Exercise of common stock warrants, number of shares	11,011		11,011
Stock based compensation expense, net of restricted share forfeitures	$ 447		$ 447
Stock based compensation expense, net of restricted share forfeitures, shares			180
Stock issued in conjunction with 401(k) employer match, net of distributions	(151)		$ (151)
Stock issued in conjunction with 401(k) employer match, net of distributions, number of shares			(3,943)
Net income	7,934			7,934
Other comprehensive (loss) income	(390)					(390)
Ending balance at Mar. 31, 2017	$ 278,510		$ 218,959	$ 67,320		$ (7,872)	$ 103
Ending balance, shares at Mar. 31, 2017			13,064,110

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities
Net income	$ 7,934	$ 6,233
Adjustments to reconcile net income to net cash from operating activities
Depreciation and amortization on premises and equipment	368	322
Accretion of purchase accounting adjustments	(381)	(360)
Net amortization of securities	2,452	1,504
Amortization of loan servicing right asset	213	251
Amortization of core deposit intangible	127	149
Amortization of debt issuance costs	44
Provision for loan losses	1,855	1,136
Deferred income tax benefit	(561)	(2)
Origination of loans held for sale	(65,213)	(59,381)
Proceeds from sale of loans held for sale	78,379	63,172
Net gain on sale of loans	(2,334)	(1,608)
Gain on sale of available for sale securities		(310)
Income from bank owned life insurance	(155)	(161)
Gain on sale and write down of foreclosed assets		(3)
Loss on sale of assets held for sale		98
Stock-based compensation	447	258
Compensation expense related to common stock issued to 401(k) plan		135
Deferred gain on sale of loans	(58)	(20)
Deferred gain on sale of foreclosed assets	(3)
Net change in:
Accrued interest receivable and other assets	(1,687)	129
Accrued interest payable and other liabilities	5,944	2,212
Net cash from operating activities	27,371	13,754
Available for sale securities:
Sales		48,772
Purchases	(363,298)	(70,169)
Maturities, prepayments and calls	42,167	18,020
Held to maturity securities:
Purchases	(1,996)	(1,245)
Maturities, prepayments and calls	4,335	1,435
Net change in loans	(177,360)	(117,804)
Proceeds from sale of assets held for sale		1,542
Purchase of restricted equity securities	(3,135)	(26)
Purchases of premises and equipment, net	(1,048)	(758)
Increase in certificates of deposits at other financial institutions	(980)	(815)
Net cash from investing activities	(501,315)	(121,048)
Cash flows from financing activities
Increase in deposits	425,394	139,534
Decrease in federal funds purchased and repurchase agreements	(12,871)	(51,493)
Proceeds from Federal Home Loan Bank advances	230,000	40,000
Repayment of Federal Home Loan Bank advances	(145,000)	(40,000)
Proceeds from other borrowings		10,000
Repayment of other borrowings		(10,000)
Proceeds from issuance of subordinated notes, net of issuance costs		38,843
Proceeds from exercise of common stock warrants	132	38
Proceeds from exercise of common stock options	177	118
Divestment of common stock issued to 401(k) plan	(151)	(63)
Redemption of Series A preferred stock		(10,000)
Dividends paid on preferred stock		(23)
Net cash from financing activities	497,681	116,954
Net change in cash and cash equivalents	23,737	9,660
Cash and cash equivalents at beginning of period	90,927	52,394
Cash and cash equivalents at end of period	114,664	62,054
Supplemental information:
Interest paid	6,829	2,993
Income taxes paid	$ 530	$ 1,125

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1— SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation 10-Q S-X, 10-01. Form 10-K These consolidated financial statements include the accounts of Franklin Financial Network, Inc. (“FFN”), and its wholly-owned subsidiaries, Franklin Synergy Bank (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 Franklin Synergy Bank and are included in these consolidated financial statements. Significant intercompany transactions and accounts are eliminated in consolidation. Recently Adopted Accounting Pronouncements 2016-09, “ Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” ASU 2016-09 paid-in paid-in paid-in ASU 2016-09 ASU 2016-09 ASU 2016-09 Recently Issued, Not Yet Effective Accounting Pronouncements 2014-09, Revenue from Contracts with Customers (Topic 606): Revenue from Contracts with Customers 2014-09 2014-09 2014-09 Other Assets and Deferred Costs: Contracts with Customers 340-40”), non-monetary In February 2016, FASB issued ASU 2016-02 Topic 842, Leases Topic 840, Leases 2016-02 right-of-use 2016-02 right-of-use 2016-02 In June 2016, FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments available-for-sale 2016-13 In August 2016, FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. zero-coupon In January 2017, the FASB issued ASU No. 2017-04, No. 2017-04 No. 2017-04 In March 2017, the FASB issued ASU No. 2017-08, 310-20): No. 2017-08 No. 2017-08

Securities

Securities	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Securities	NOTE 2—SECURITIES The following table summarizes the amortized cost and fair value of the available for sale securities portfolio at March 31, 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 March 31, 2017 U.S. government sponsored entities and agencies $ 70,099 $ — $ (148 ) $ 69,951 Mortgage-backed securities: residential 836,278 993 (9,240 ) 828,031 Mortgage-backed securities: commercial 19,352 19 (100 ) 19,271 State and political subdivisions 160,513 525 (4,998 ) 156,040 Total $ 1,086,242 $ 1,537 $ (14,486 ) $ 1,073,293 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 held to maturity securities portfolio at March 31, 2017 and December 31, 2016 and the corresponding amounts of gross unrecognized gains and losses were as follows: Amortized Gross Gross Fair March 31, 2017 Mortgage backed securities: residential $ 103,788 $ 318 $ (2,367 ) $ 101,739 State and political subdivisions 122,268 1,483 (153 ) 123,598 Total $ 226,056 $ 1,801 $ (2,520 ) $ 225,337 Amortized 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 Sales and calls of available for sale securities were as follows: Three Months Ended March 31, 2017 2016 Proceeds $ — $ 48,772 Gross gains — 693 Gross losses — (383 ) 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. March 31, 2017 Amortized Fair Available for sale One year or less $ 15,000 $ 14,884 Over one year through five years 70,099 69,951 Over five years through ten years 4,730 4,768 Over ten years 140,783 136,388 Mortgage-backed securities: residential 836,278 828,031 Mortgage-backed securities: commercial 19,352 19,271 Total $ 1,086,242 $ 1,073,293 Held to maturity Over one year through five years $ 1,104 $ 1,136 Over five years through ten years 5,198 5,277 Over ten years 115,966 117,185 Mortgage-backed securities: residential 103,788 101,739 Total $ 226,056 $ 225,337 Securities pledged at March 31, 2017 and December 31, 2016 had a carrying amount of $1,105,158 and $808,224 and were pledged to secure public deposits and repurchase agreements. At March 31, 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 March 31, 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 March 31, 2017 Available for sale U.S. government sponsored entities and agencies $ 69,951 $ (148 ) $ — $ — $ 69,951 $ (148 ) Mortgage-backed securities: residential 656,782 (8,708 ) 14,544 (532 ) 671,326 (9,240 ) Mortgage-backed securities: commercial 15,715 (100 ) — — 15,715 (100 ) State and political subdivisions 103,229 (4,998 ) — — 103,229 (4,998 ) Total available for sale $ 845,677 $ (13,954 ) $ 14,544 $ (532 ) $ 860,221 $ (14,486 ) Less Than 12 Months 12 Months or Longer Total Fair Unrecognized Fair Unrecognized Fair Unrecognized Held to maturity Mortgage-backed securities: residential $ 86,722 $ (2,262 ) $ 2,868 $ (105 ) $ 89,590 $ (2,367 ) State and political subdivisions 16,937 (153 ) — — 16,937 (153 ) Total held to maturity $ 103,659 $ (2,415 ) $ 2,868 $ (105 ) $ 106,527 $ (2,520 ) 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	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Loans	NOTE 3—LOANS Loans at March 31, 2017 and December 31, 2016 were as follows: March 31, December 31, Loans that are not PCI loans Construction and land development $ 499,272 $ 489,562 Commercial real estate: Nonfarm, nonresidential 509,060 458,569 Other 39,690 38,571 Residential real estate: Closed-end 1-4 299,439 254,474 Other 151,530 150,515 Commercial and industrial 445,398 376,476 Consumer and other 3,853 3,359 Loans before net deferred loan fees 1,948,242 1,771,526 Deferred loan fees, net (971 ) (793 ) Total loans that are not PCI loans 1,947,271 1,770,733 Total PCI loans 2,444 2,859 Allowance for loan losses (18,105 ) (16,553 ) Total loans, net of allowance for loan losses $ 1,931,610 $ 1,757,039 The following table presents the activity in the allowance for loan losses by portfolio segment for the three month periods ended March 31, 2017 and 2016: Construction Commercial Residential Commercial Consumer Total Three Months Ended March 31, 2017 Allowance for loan losses: Beginning balance $ 3,776 $ 4,266 $ 2,398 $ 6,068 $ 45 $ 16,553 Provision for loan losses 61 393 262 1,117 22 1,855 Loans charged-off — — — (300 ) (23 ) (323 ) Recoveries — — 12 — 8 20 Total ending allowance balance $ 3,837 $ 4,659 $ 2,672 $ 6,885 $ 52 $ 18,105 Three Months Ended March 31, 2016 Allowance for loan losses: Beginning balance $ 3,186 $ 3,146 $ 1,861 $ 3,358 $ 36 $ 11,587 Provision for loan losses 192 418 (89 ) 582 33 1,136 Loans charged-off — — — (65 ) (11 ) (76 ) Recoveries — — 28 — 1 29 Total ending allowance balance $ 3,378 $ 3,564 $ 1,800 $ 3,875 $ 59 $ 12,676 As of March 31, 2017 and December 31, 2016, there was $1 and $0, respectively, in 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 March 31, 2017 and December 31, 2016. For purposes of this disclosure, recorded investment in loans excludes accrued interest receivable and loan fees, net due to immateriality. Construction Commercial Residential Commercial Consumer Total March 31, 2017 Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ — $ — $ — $ 739 $ — $ 739 Collectively evaluated for impairment 3,837 4,659 2,672 6,145 52 17,365 Purchased credit-impaired loans — — — 1 — 1 Total ending allowance balance $ 3,837 $ 4,659 $ 2,672 $ 6,885 $ 52 $ 18,105 Loans: Individually evaluated for impairment $ — $ 2,560 $ 1,464 $ 3,192 $ — $ 7,216 Collectively evaluated for impairment 499,272 546,190 449,505 442,206 3,853 1,941,026 Purchased credit-impaired loans — 408 189 1,847 — 2,444 Total ending loans balance $ 499,272 $ 549,158 $ 451,158 $ 447,245 $ 3,853 $ 1,950,686 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 The following table presents information related to impaired loans by class of loans as of March 31, 2017 and December 31, 2016: Unpaid Recorded Allowance for March 31, 2017 With no allowance recorded: Commercial real estate: Nonfarm, nonresidential $ 4,146 $ 2,560 $ — Residential real estate: Closed-end 1-4 1,344 1,344 — Other 120 120 — Commercial and industrial 802 802 — Subtotal 6,412 4,826 — With an allowance recorded: Commercial and industrial 2,390 2,390 739 Subtotal 2,390 2,390 739 Total $ 8,802 $ 7,216 $ 739 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 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 months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Average Recorded Investment With no allowance recorded: Construction and land development $ — $ 898 Commercial real estate: Nonfarm, nonresidential 4,128 1,402 Residential real estate: Closed-end 1-4 1,799 736 Other 120 712 Commercial and industrial — 21 Subtotal 6,047 3,769 With an allowance recorded: Commercial and industrial $ 2,585 $ 86 Subtotal 2,585 86 Total $ 8,632 $ 3,855 The impact on net interest income for these loans was not material to the Company’s results of operations for the three months ended March 31, 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 March 31, 2017 and December 31, 2016: Nonaccrual Loans Past Due March 31, 2017 Construction and land development $ — $ 200 Commercial real estate: Nonfarm, nonresidential 835 — Residential real estate: Closed-end 1-4 — 388 Other 120 — Commercial and industrial 2,391 102 Total $ 3,346 $ 690 December 31, 2016 Construction and land development $ — $ 1,950 Commercial real estate: Nonfarm, nonresidential 835 — Residential real estate: Closed-end 1-4 — 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 March 31, 2017 and December 31, 2016 by class of loans: 30-59 60-89 Greater Nonaccrual Total Loans PCI Total March 31, 2017 Construction and land development $ — $ 641 $ 200 $ — $ 841 $ 498,431 $ — $ 499,272 Commercial real estate: Nonfarm, nonresidential 2,372 — — 835 3,207 505,853 408 509,468 Other — — — — — 39,690 — 39,690 Residential real estate: Closed-end 1-4 1,665 — 388 — 2,053 297,386 189 299,628 Other — — — 120 120 151,410 — 151,530 Commercial and industrial 154 — 102 2,391 2,647 442,751 1,847 447,245 Consumer and other 7 — — — 7 3,846 — 3,853 $ 4,198 $ 641 $ 690 $ 3,346 $ 8,875 $ 1,939,367 $ 2,444 $ 1,950,686 30-59 60-89 Greater Nonaccrual Total Loans PCI Total 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 1-4 428 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: non-homogeneous non-homogeneous 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 March 31, 2017 and December 31, 2016: Pass Special Substandard Total March 31, 2017 Construction and land development $ 499,272 $ — $ — $ 499,272 Commercial real estate: Nonfarm, nonresidential 502,021 — 7,447 509,468 Other 39,690 — — 39,690 Residential real estate: Closed-end 1-4 297,995 — 1,633 299,628 Other 150,521 — 1,009 151,530 Commercial and industrial 442,567 — 4,678 447,245 Consumer and other 3,853 — — 3,853 $ 1,935,919 $ — $ 14,767 $ 1,950,686 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: 1-4 251,919 — 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 March 31, 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	3 Months Ended
	Mar. 31, 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 March 31, 2017 and December 31, 2016 are as follows: March 31, December 31, Loan portfolios serviced for: Federal Home Loan Mortgage Corporation $ 503,294 $ 499,385 Other 2,043 2,954 The components of net loan servicing fees for the three months ended March 31, 2017 and 2016 were as follows: Three Months Ended 2017 2016 Loan servicing fees, net: Loan servicing fees $ 320 $ 293 Amortization of loan servicing fees (213 ) (251 ) Change in impairment — — Total $ 107 $ 42 The fair value of servicing rights was estimated by management to be approximately $5,154 at March 31, 2017. Fair value for March 31, 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	3 Months Ended
	Mar. 31, 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 March 31, 2017 and December 31, 2016, these short-term borrowings totaled $31,339 and $36,496, respectively, and were secured by securities with carrying amounts of $41,604 and $41,136, respectively. At March 31, 2017, all of the Company’s repurchase agreements had one-day The following table provides additional details as of March 31, 2017: As of March 31, 2017 U.S. Mortgage- State and Total Market value of securities pledged $ 60 $ 49 $ 42,011 $ 42,120 Borrowings related to pledged amounts $ — $ — $ 31,339 $ 31,339 Market value pledged as a % of borrowings — % — % 134 % 134 % 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	3 Months Ended
	Mar. 31, 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 March 30, 2017. The warrants were detachable from the common stock. There were 11,011 and 3,150 warrants exercised during the three months ended March 31, 2017 and 2016, respectively. A summary of the stock warrant activity for the three months ended March 31, 2017 and 2016 follows: 2017 2016 Stock warrants exercised: Intrinsic value of warrants exercised $ 291 $ 61 Cash received from warrants exercised 132 38 The Company has two share based compensation plans as described below. Total compensation cost that has been charged against income for those plans was $447 and $258 for the three months ended March 31, 2017 and 2016, respectively. The total income tax benefit was $93 for the three months ended March 31, 2017, which is shown on the Consolidated Statements of Income as a reduction of income tax expense. Since no options were exercised in the first quarter of 2016, there was no excess tax benefit from the exercise of stock options for the three months ended March 31, 2016. Stock Option Plan The 2007 Omnibus Equity Incentive Plan provides that no options intended to be ISOs may be granted after April 9, 2017. As a result, FFN’s board of directors has determined that it is in the best interests of FFN and its shareholders to adopt a new equity incentive plan, the 2017 Omnibus Equity Incentive Plan. The terms of the 2017 Omnibus Equity Incentive Plan are substantially similar to the terms of the 2007 Omnibus Equity Incentive Plan. If FFN’s shareholders approve the 2017 Omnibus Equity Incentive Plan at the 2017 annual meeting scheduled to be held on May 25, 2017, FFN’s board of directors will freeze the 2007 Omnibus Equity Incentive Plan and cease issuing any awards under the 2007 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 non-qualified 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. March 31, March 31, Risk-free interest rate 2.28 % 1.99 % Expected term 7.4 years 7.5 years Expected stock price volatility 34.20 % 29.14 % Dividend yield 0.04 % 0.24 % The weighted average fair value of options granted for the three months ended March 31, 2017 and 2016 were $17.25 and $10.45, respectively. A summary of the activity in the stock option plans for the three months ended March 31, 2017 follows: Shares Weighted Weighted Aggregate Outstanding at beginning of year 1,395,016 $ 16.70 6.39 $ 35,090 Granted 25,500 41.85 Exercised (21,581 ) 10.64 Forfeited, expired, or cancelled (430 ) 25.30 Outstanding at period end 1,398,505 $ 17.25 6.25 $ 30,074 Vested or expected to vest 1,328,580 $ 17.25 6.25 $ 29,584 Exercisable at period end 726,927 $ 11.77 4.46 $ 19,790 For the three months 2017 2016 Stock options exercised: Intrinsic value of options exercised $ 610 $ 242 Cash received from options exercised 177 118 Tax benefit realized from option exercises 93 — As of March 31, 2017, there was $3,826 of total unrecognized compensation cost related to non-vested Restricted Share Award Plan A summary of activity for non-vested Non-vested Shares Shares Weighted-Average Grant-Date Non-vested 106,458 $ 19.81 Granted — — Vested — — Forfeited (180 ) 25.67 Non-vested 106,278 $ 19.80 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 March 31, 2017, there was $1,524 of total unrecognized compensation cost related to non-vested

Regulatory Capital Matters

Regulatory Capital Matters	3 Months Ended
	Mar. 31, 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 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 March 31, 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 March 31, 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 March 31, 2017 and December 31, 2016 for the Company and Bank: Actual Required For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Regulations Amount Ratio Amount Ratio Amount Ratio March 31, 2017 Company common equity Tier 1 capital to risk-weighted assets $ 272,242 11.32 % $ 108,178 4.50 % N/A N/A Company Total Capital to risk weighted assets $ 348,821 14.51 % $ 192,316 8.00 % N/A N/A Company Tier 1 (Core) Capital to risk weighted assets $ 272,242 11.32 % $ 144,237 6.00 % N/A N/A Company Tier 1 (Core) Capital to average assets $ 272,242 8.36 % $ 130,289 4.00 % N/A N/A Bank common equity Tier 1 capital to risk-weighted assets $ 327,134 13.58 % $ 108,376 4.50 % $ 156,544 6.50 % Bank Total Capital to risk weighted assets $ 345,332 14.34 % $ 192,669 8.00 % $ 240,836 10.00 % Bank Tier 1 (Core) Capital to risk weighted assets $ 327,134 13.58 % $ 144,502 6.00 % $ 192,669 8.00 % Bank Tier 1 (Core) Capital to average assets $ 327,134 10.05 % $ 130,201 4.00 % $ 162,751 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	3 Months Ended
	Mar. 31, 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 Non-real 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 review 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 $ — $ 69,951 $ — Mortgage-backed securities-residential — 828,031 — Mortgage-backed securities-commercial — 19,271 — State and political subdivisions — 156,040 — Total securities available for sale $ — $ 1,073,293 $ — Loans held for sale $ — $ 12,682 $ — Mortgage banking derivatives $ — $ 926 $ — Financial Liabilities Mortgage banking derivatives $ — $ 149 $ — 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 March 31, 2017, the unpaid principal balance of loans held for sale was $12,327 resulting in an unrealized gain of $355 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 March 31, 2017 and 2016, the change in fair value related to loans held for sale, which is included in gain on sale of loans, was $113 and $38, respectively. None of these loans were 90 days or more past due or on nonaccrual as of March 31, 2017 and December 31, 2016. There were no transfers between level 1 and 2 during 2017 and 2016. Assets measured at fair value on a non-recurring There was one collateral dependent impaired commercial and industrial loan carried at fair value of $1,650 as of both March 31, 2017 and December 31, 2016. For the three months ended March 31, 2017 and 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 $1,315 and $0 as of March 31, 2017 and December 31, 2016. There were no properties at March 31, 2017 or 2016 that had required write-downs to fair value; therefore, there were no write downs recorded for the three months ended March 31, 2017 and 2016, respectively. The foreclosed asset at March 31, 2017 is one piece of residential property on which the Company foreclosed during the first quarter of 2017 related to a residential construction loan. The carrying amounts and estimated fair values of financial instruments, at March 31, 2017 and December 31, 2016 are as follows: Carrying Fair Value Measurements at Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 114,657 $ 114,657 $ — $ — $ 114,657 Certificates of deposit held at other financial institutions 2,035 — 2,035 — 2,035 Securities available for sale 1,073,293 — 1,073,293 — 1,073,293 Securities held to maturity 226,056 — 225,337 — 225,337 Loans held for sale 12,682 — 12,682 — 12,682 Net loans 1,931,610 — — 1,899,549 1,899,549 Restricted equity securities 14,978 n/a n/a n/a n/a Servicing rights, net 3,593 — 5,154 — 5,154 Accrued interest receivable 10,516 — 5,589 4,927 10,516 Financial liabilities Deposits $ 2,817,212 $ 1,608,606 $ 1,180,303 $ — $ 2,788,909 Federal funds purchased and repurchase agreements 70,430 — 70,430 — 70,430 Federal Home Loan Bank advances 217,000 — 215,371 — 215,371 Subordinated notes, net 58,381 — — 62,181 62,181 Accrued interest payable 1,993 33 1,610 350 1,993 Carrying Fair Value Measurements at Amount 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: non-interest (f) Federal Funds Purchased and Repurchase Agreements: (g) Federal Home Loan Bank Advances: (h) Subordinated Notes: (i) Accrued Interest Receivable/Payable: (j) Off-balance off-balance

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 9—EARNINGS PER SHARE The two-class two-class Three Months Ended March 31, 2017 2016 Basic Net income available to common shareholders $ 7,934 $ 6,210 Less: earnings allocated to participating securities (65 ) (64 ) Net income allocated to common shareholders $ 7,869 $ 6,146 Weighted average common shares outstanding including participating securities 13,049,012 10,580,304 Less: Participating securities (106,323 ) (109,064 ) Average shares 12,942,689 10,471,240 Basic earnings per common share $ 0.61 $ 0.59 Three Months Ended March 31, 2017 2016 Diluted Net income allocated to common shareholders $ 7,869 $ 6,146 Weighted average common shares outstanding for basic earnings per common share 12,942,689 10,471,240 Add: Dilutive effects of assumed exercises of stock options 708,694 622,743 Add: Dilutive effects of assumed exercises of stock warrants 5,974 12,426 Average shares and dilutive potential common shares 13,657,357 11,106,409 Dilutive earnings per common share $ 0.58 $ 0.55 Stock options for 108,000 and 62,167 shares of common stock were not considered in computing diluted earnings per common share for the three months ended March 31, 2017 and 2016 because they were antidilutive.

Subordinated Debt Issuance

Subordinated Debt Issuance	3 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
Subordinated Debt Issuance	NOTE 10—SUBORDINATED DEBT ISSUANCE The Company’s subordinated notes, net of issuance costs, totaled $58,381 and $58,337 at March 31, 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 fixed-to-floating The following table summarizes the terms of each subordinated note offering: March 2016 Subordinated Notes June 2016 Subordinated Notes 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 March 31, 2017 all interest payments have been made in accordance with the terms of the agreements. 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 ten-year

Summary of Significant Accoun18

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation 10-Q S-X, 10-01. Form 10-K These consolidated financial statements include the accounts of Franklin Financial Network, Inc. (“FFN”), and its wholly-owned subsidiaries, Franklin Synergy Bank (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 Franklin Synergy Bank and are included in these consolidated financial statements. Significant intercompany transactions and accounts are eliminated in consolidation.
Recently Adopted and Recently Issued, Not Yet Effective Accounting Pronouncements	Recently Adopted Accounting Pronouncements 2016-09, “ Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” ASU 2016-09 paid-in paid-in paid-in ASU 2016-09 ASU 2016-09 ASU 2016-09 Recently Issued, Not Yet Effective Accounting Pronouncements 2014-09, Revenue from Contracts with Customers (Topic 606): Revenue from Contracts with Customers 2014-09 2014-09 2014-09 Other Assets and Deferred Costs: Contracts with Customers 340-40”), non-monetary In February 2016, FASB issued ASU 2016-02 Topic 842, Leases Topic 840, Leases 2016-02 right-of-use 2016-02 right-of-use 2016-02 In June 2016, FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments available-for-sale 2016-13 In August 2016, FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. zero-coupon In January 2017, the FASB issued ASU No. 2017-04, No. 2017-04 No. 2017-04 In March 2017, the FASB issued ASU No. 2017-08, 310-20): No. 2017-08 No. 2017-08

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 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 available for sale securities portfolio at March 31, 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 March 31, 2017 U.S. government sponsored entities and agencies $ 70,099 $ — $ (148 ) $ 69,951 Mortgage-backed securities: residential 836,278 993 (9,240 ) 828,031 Mortgage-backed securities: commercial 19,352 19 (100 ) 19,271 State and political subdivisions 160,513 525 (4,998 ) 156,040 Total $ 1,086,242 $ 1,537 $ (14,486 ) $ 1,073,293 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 held to maturity securities portfolio at March 31, 2017 and December 31, 2016 and the corresponding amounts of gross unrecognized gains and losses were as follows: Amortized Gross Gross Fair March 31, 2017 Mortgage backed securities: residential $ 103,788 $ 318 $ (2,367 ) $ 101,739 State and political subdivisions 122,268 1,483 (153 ) 123,598 Total $ 226,056 $ 1,801 $ (2,520 ) $ 225,337 Amortized 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. March 31, 2017 Amortized Fair Available for sale One year or less $ 15,000 $ 14,884 Over one year through five years 70,099 69,951 Over five years through ten years 4,730 4,768 Over ten years 140,783 136,388 Mortgage-backed securities: residential 836,278 828,031 Mortgage-backed securities: commercial 19,352 19,271 Total $ 1,086,242 $ 1,073,293 Held to maturity Over one year through five years $ 1,104 $ 1,136 Over five years through ten years 5,198 5,277 Over ten years 115,966 117,185 Mortgage-backed securities: residential 103,788 101,739 Total $ 226,056 $ 225,337
Schedule of Unrealized Losses and Fair Value by Major Security Type	The following table summarizes the securities with unrealized and unrecognized losses at March 31, 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 March 31, 2017 Available for sale U.S. government sponsored entities and agencies $ 69,951 $ (148 ) $ — $ — $ 69,951 $ (148 ) Mortgage-backed securities: residential 656,782 (8,708 ) 14,544 (532 ) 671,326 (9,240 ) Mortgage-backed securities: commercial 15,715 (100 ) — — 15,715 (100 ) State and political subdivisions 103,229 (4,998 ) — — 103,229 (4,998 ) Total available for sale $ 845,677 $ (13,954 ) $ 14,544 $ (532 ) $ 860,221 $ (14,486 ) Less Than 12 Months 12 Months or Longer Total Fair Unrecognized Fair Unrecognized Fair Unrecognized Held to maturity Mortgage-backed securities: residential $ 86,722 $ (2,262 ) $ 2,868 $ (105 ) $ 89,590 $ (2,367 ) State and political subdivisions 16,937 (153 ) — — 16,937 (153 ) Total held to maturity $ 103,659 $ (2,415 ) $ 2,868 $ (105 ) $ 106,527 $ (2,520 ) 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	Sales and calls of available for sale securities were as follows: Three Months Ended March 31, 2017 2016 Proceeds $ — $ 48,772 Gross gains — 693 Gross losses — (383 )

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Summary of Loans	Loans at March 31, 2017 and December 31, 2016 were as follows: March 31, December 31, Loans that are not PCI loans Construction and land development $ 499,272 $ 489,562 Commercial real estate: Nonfarm, nonresidential 509,060 458,569 Other 39,690 38,571 Residential real estate: Closed-end 1-4 299,439 254,474 Other 151,530 150,515 Commercial and industrial 445,398 376,476 Consumer and other 3,853 3,359 Loans before net deferred loan fees 1,948,242 1,771,526 Deferred loan fees, net (971 ) (793 ) Total loans that are not PCI loans 1,947,271 1,770,733 Total PCI loans 2,444 2,859 Allowance for loan losses (18,105 ) (16,553 ) Total loans, net of allowance for loan losses $ 1,931,610 $ 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 March 31, 2017 and 2016: Construction Commercial Residential Commercial Consumer Total Three Months Ended March 31, 2017 Allowance for loan losses: Beginning balance $ 3,776 $ 4,266 $ 2,398 $ 6,068 $ 45 $ 16,553 Provision for loan losses 61 393 262 1,117 22 1,855 Loans charged-off — — — (300 ) (23 ) (323 ) Recoveries — — 12 — 8 20 Total ending allowance balance $ 3,837 $ 4,659 $ 2,672 $ 6,885 $ 52 $ 18,105 Three Months Ended March 31, 2016 Allowance for loan losses: Beginning balance $ 3,186 $ 3,146 $ 1,861 $ 3,358 $ 36 $ 11,587 Provision for loan losses 192 418 (89 ) 582 33 1,136 Loans charged-off — — — (65 ) (11 ) (76 ) Recoveries — — 28 — 1 29 Total ending allowance balance $ 3,378 $ 3,564 $ 1,800 $ 3,875 $ 59 $ 12,676
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 March 31, 2017 and December 31, 2016. For purposes of this disclosure, recorded investment in loans excludes accrued interest receivable and loan fees, net due to immateriality. Construction Commercial Residential Commercial Consumer Total March 31, 2017 Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ — $ — $ — $ 739 $ — $ 739 Collectively evaluated for impairment 3,837 4,659 2,672 6,145 52 17,365 Purchased credit-impaired loans — — — 1 — 1 Total ending allowance balance $ 3,837 $ 4,659 $ 2,672 $ 6,885 $ 52 $ 18,105 Loans: Individually evaluated for impairment $ — $ 2,560 $ 1,464 $ 3,192 $ — $ 7,216 Collectively evaluated for impairment 499,272 546,190 449,505 442,206 3,853 1,941,026 Purchased credit-impaired loans — 408 189 1,847 — 2,444 Total ending loans balance $ 499,272 $ 549,158 $ 451,158 $ 447,245 $ 3,853 $ 1,950,686 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 March 31, 2017 and December 31, 2016: Unpaid Recorded Allowance for March 31, 2017 With no allowance recorded: Commercial real estate: Nonfarm, nonresidential $ 4,146 $ 2,560 $ — Residential real estate: Closed-end 1-4 1,344 1,344 — Other 120 120 — Commercial and industrial 802 802 — Subtotal 6,412 4,826 — With an allowance recorded: Commercial and industrial 2,390 2,390 739 Subtotal 2,390 2,390 739 Total $ 8,802 $ 7,216 $ 739 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 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 months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Average Recorded Investment With no allowance recorded: Construction and land development $ — $ 898 Commercial real estate: Nonfarm, nonresidential 4,128 1,402 Residential real estate: Closed-end 1-4 1,799 736 Other 120 712 Commercial and industrial — 21 Subtotal 6,047 3,769 With an allowance recorded: Commercial and industrial $ 2,585 $ 86 Subtotal 2,585 86 Total $ 8,632 $ 3,855
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 March 31, 2017 and December 31, 2016: Nonaccrual Loans Past Due March 31, 2017 Construction and land development $ — $ 200 Commercial real estate: Nonfarm, nonresidential 835 — Residential real estate: Closed-end 1-4 — 388 Other 120 — Commercial and industrial 2,391 102 Total $ 3,346 $ 690 December 31, 2016 Construction and land development $ — $ 1,950 Commercial real estate: Nonfarm, nonresidential 835 — Residential real estate: Closed-end 1-4 — 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 March 31, 2017 and December 31, 2016 by class of loans: 30-59 60-89 Greater Nonaccrual Total Loans PCI Total March 31, 2017 Construction and land development $ — $ 641 $ 200 $ — $ 841 $ 498,431 $ — $ 499,272 Commercial real estate: Nonfarm, nonresidential 2,372 — — 835 3,207 505,853 408 509,468 Other — — — — — 39,690 — 39,690 Residential real estate: Closed-end 1-4 1,665 — 388 — 2,053 297,386 189 299,628 Other — — — 120 120 151,410 — 151,530 Commercial and industrial 154 — 102 2,391 2,647 442,751 1,847 447,245 Consumer and other 7 — — — 7 3,846 — 3,853 $ 4,198 $ 641 $ 690 $ 3,346 $ 8,875 $ 1,939,367 $ 2,444 $ 1,950,686 30-59 60-89 Greater Nonaccrual Total Loans PCI Total 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 1-4 428 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 March 31, 2017 and December 31, 2016: Pass Special Substandard Total March 31, 2017 Construction and land development $ 499,272 $ — $ — $ 499,272 Commercial real estate: Nonfarm, nonresidential 502,021 — 7,447 509,468 Other 39,690 — — 39,690 Residential real estate: Closed-end 1-4 297,995 — 1,633 299,628 Other 150,521 — 1,009 151,530 Commercial and industrial 442,567 — 4,678 447,245 Consumer and other 3,853 — — 3,853 $ 1,935,919 $ — $ 14,767 $ 1,950,686 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: 1-4 251,919 — 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)	3 Months Ended
	Mar. 31, 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 March 31, 2017 and December 31, 2016 are as follows: March 31, December 31, Loan portfolios serviced for: Federal Home Loan Mortgage Corporation $ 503,294 $ 499,385 Other 2,043 2,954
Components of Net Loan Servicing Fees	The components of net loan servicing fees for the three months ended March 31, 2017 and 2016 were as follows: Three Months Ended 2017 2016 Loan servicing fees, net: Loan servicing fees $ 320 $ 293 Amortization of loan servicing fees (213 ) (251 ) Change in impairment — — Total $ 107 $ 42

Securities Sold Under Agreeme22

Securities Sold Under Agreement to Repurchase (Tables)	3 Months Ended
	Mar. 31, 2017
Brokers and Dealers [Abstract]
Additional Details of Securities Sold under Agreement to Repurchase	The following table provides additional details as of March 31, 2017: As of March 31, 2017 U.S. Mortgage- State and Total Market value of securities pledged $ 60 $ 49 $ 42,011 $ 42,120 Borrowings related to pledged amounts $ — $ — $ 31,339 $ 31,339 Market value pledged as a % of borrowings — % — % 134 % 134 % 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)	3 Months Ended
	Mar. 31, 2017
Equity [Abstract]
Summary of Stock Warrant Activity	A summary of the stock warrant activity for the three months ended March 31, 2017 and 2016 follows: 2017 2016 Stock warrants exercised: Intrinsic value of warrants exercised $ 291 $ 61 Cash received from warrants exercised 132 38
Fair Value Assumptions of Stock Options	The fair value of options granted was determined using the following weighted-average assumptions as of grant date. March 31, March 31, Risk-free interest rate 2.28 % 1.99 % Expected term 7.4 years 7.5 years Expected stock price volatility 34.20 % 29.14 % Dividend yield 0.04 % 0.24 %
Summary of Company's Stock Option Activities	A summary of the activity in the stock option plans for the three months ended March 31, 2017 follows: Shares Weighted Weighted Aggregate Outstanding at beginning of year 1,395,016 $ 16.70 6.39 $ 35,090 Granted 25,500 41.85 Exercised (21,581 ) 10.64 Forfeited, expired, or cancelled (430 ) 25.30 Outstanding at period end 1,398,505 $ 17.25 6.25 $ 30,074 Vested or expected to vest 1,328,580 $ 17.25 6.25 $ 29,584 Exercisable at period end 726,927 $ 11.77 4.46 $ 19,790
Summary of Stock Options Exercised	For the three months 2017 2016 Stock options exercised: Intrinsic value of options exercised $ 610 $ 242 Cash received from options exercised 177 118 Tax benefit realized from option exercises 93 —
Summary of Activity for Nonvested Restricted Share Awards	A summary of activity for non-vested Non-vested Shares Shares Weighted-Average Grant-Date Non-vested 106,458 $ 19.81 Granted — — Vested — — Forfeited (180 ) 25.67 Non-vested 106,278 $ 19.80

Regulatory Capital Matters (Tab

Regulatory Capital Matters (Tables)	3 Months Ended
	Mar. 31, 2017
Banking and Thrift [Abstract]
Actual and Required Capital Amounts and Ratios	Actual and required capital amounts and ratios are presented below as of March 31, 2017 and December 31, 2016 for the Company and Bank: Actual Required For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Regulations Amount Ratio Amount Ratio Amount Ratio March 31, 2017 Company common equity Tier 1 capital to risk-weighted assets $ 272,242 11.32 % $ 108,178 4.50 % N/A N/A Company Total Capital to risk weighted assets $ 348,821 14.51 % $ 192,316 8.00 % N/A N/A Company Tier 1 (Core) Capital to risk weighted assets $ 272,242 11.32 % $ 144,237 6.00 % N/A N/A Company Tier 1 (Core) Capital to average assets $ 272,242 8.36 % $ 130,289 4.00 % N/A N/A Bank common equity Tier 1 capital to risk-weighted assets $ 327,134 13.58 % $ 108,376 4.50 % $ 156,544 6.50 % Bank Total Capital to risk weighted assets $ 345,332 14.34 % $ 192,669 8.00 % $ 240,836 10.00 % Bank Tier 1 (Core) Capital to risk weighted assets $ 327,134 13.58 % $ 144,502 6.00 % $ 192,669 8.00 % Bank Tier 1 (Core) Capital to average assets $ 327,134 10.05 % $ 130,201 4.00 % $ 162,751 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)	3 Months Ended
	Mar. 31, 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 $ — $ 69,951 $ — Mortgage-backed securities-residential — 828,031 — Mortgage-backed securities-commercial — 19,271 — State and political subdivisions — 156,040 — Total securities available for sale $ — $ 1,073,293 $ — Loans held for sale $ — $ 12,682 $ — Mortgage banking derivatives $ — $ 926 $ — Financial Liabilities Mortgage banking derivatives $ — $ 149 $ — 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 March 31, 2017 and December 31, 2016 are as follows: Carrying Fair Value Measurements at Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 114,657 $ 114,657 $ — $ — $ 114,657 Certificates of deposit held at other financial institutions 2,035 — 2,035 — 2,035 Securities available for sale 1,073,293 — 1,073,293 — 1,073,293 Securities held to maturity 226,056 — 225,337 — 225,337 Loans held for sale 12,682 — 12,682 — 12,682 Net loans 1,931,610 — — 1,899,549 1,899,549 Restricted equity securities 14,978 n/a n/a n/a n/a Servicing rights, net 3,593 — 5,154 — 5,154 Accrued interest receivable 10,516 — 5,589 4,927 10,516 Financial liabilities Deposits $ 2,817,212 $ 1,608,606 $ 1,180,303 $ — $ 2,788,909 Federal funds purchased and repurchase agreements 70,430 — 70,430 — 70,430 Federal Home Loan Bank advances 217,000 — 215,371 — 215,371 Subordinated notes, net 58,381 — — 62,181 62,181 Accrued interest payable 1,993 33 1,610 350 1,993 Carrying Fair Value Measurements at Amount 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)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Computation of Earnings per Share	The factors used in the earnings per share computation follow: Three Months Ended March 31, 2017 2016 Basic Net income available to common shareholders $ 7,934 $ 6,210 Less: earnings allocated to participating securities (65 ) (64 ) Net income allocated to common shareholders $ 7,869 $ 6,146 Weighted average common shares outstanding including participating securities 13,049,012 10,580,304 Less: Participating securities (106,323 ) (109,064 ) Average shares 12,942,689 10,471,240 Basic earnings per common share $ 0.61 $ 0.59 Three Months Ended March 31, 2017 2016 Diluted Net income allocated to common shareholders $ 7,869 $ 6,146 Weighted average common shares outstanding for basic earnings per common share 12,942,689 10,471,240 Add: Dilutive effects of assumed exercises of stock options 708,694 622,743 Add: Dilutive effects of assumed exercises of stock warrants 5,974 12,426 Average shares and dilutive potential common shares 13,657,357 11,106,409 Dilutive earnings per common share $ 0.58 $ 0.55

Subordinated Debt Issuance (Tab

Subordinated Debt Issuance (Tables)	3 Months Ended
	Mar. 31, 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 Subordinated Notes June 2016 Subordinated Notes 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 March 31, 2017 all interest payments have been made in accordance with the terms of the agreements.

Summary of Significant Accoun28

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Summary Of Significant Accounting Policies [Line Items]
Stock options exercised	$ 177,000	$ 118,000
ASU 2016-09 [Member]
Summary Of Significant Accounting Policies [Line Items]
Increase (decrease) in diluted earnings per share		$ 0.01
Stock options exercised		$ 0

Securities - Summary of Amortiz

Securities - Summary of Amortized Cost and Fair Value of Securities Available for Sale (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 1,086,242	$ 767,063
Gross Unrealized Gains	1,537	1,214
Gross Unrealized Losses	(14,486)	(13,522)
Fair Value	1,073,293	754,755
U.S. Government Sponsored Entities and Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	70,099
Gross Unrealized Losses	(148)
Fair Value	69,951
Mortgage-Backed Securities: Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	836,278	614,344
Gross Unrealized Gains	993	949
Gross Unrealized Losses	(9,240)	(8,208)
Fair Value	828,031	607,085
Mortgage-Backed Securities: Commercial [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	19,352	19,439
Gross Unrealized Gains	19	27
Gross Unrealized Losses	(100)	(132)
Fair Value	19,271	19,334
State and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	160,513	133,280
Gross Unrealized Gains	525	238
Gross Unrealized Losses	(4,998)	(5,182)
Fair Value	$ 156,040	$ 128,336

Securities - Schedule of Amorti

Securities - Schedule of Amortized Cost and Fair Value of Securities Held to Maturity Portfolio (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 226,056	$ 228,894
Gross Unrecognized Gains	1,801	1,548
Gross Unrecognized Losses	(2,520)	(2,550)
Fair Value	225,337	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	103,788	106,169
Gross Unrecognized Gains	318	328
Gross Unrecognized Losses	(2,367)	(2,343)
Fair Value	101,739	104,154
State and Political Subdivisions [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	122,268	122,522
Gross Unrecognized Gains	1,483	1,214
Gross Unrecognized Losses	(153)	(207)
Fair Value	$ 123,598	$ 123,529

Securities - Summary of Sales,

Securities - Summary of Sales, Calls, and Prepayments of Available for Sale Securities and Associated Gains and Losses (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2016USD ($)
Available-for-sale Securities [Abstract]
Proceeds	$ 48,772
Gross gains	693
Gross losses	$ (383)

Securities - Schedule of Amor32

Securities - Schedule of Amortized Cost and Fair Value of Investment Securities Portfolio by Contractual Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Available for sale
Amortized Cost, One year or less	$ 15,000
Amortized Cost, Over one year through five years	70,099
Amortized Cost, Over five years through ten years	4,730
Amortized Cost, Over ten years	140,783
Amortized Cost	1,086,242	$ 767,063
Held to maturity
Amortized Cost, Over one year through five years	1,104
Amortized Cost, Over five years through ten years	5,198
Amortized Cost, Over ten years	115,966
Amortized Cost	226,056	228,894
Available for sale
Fair Value, One year or less	14,884
Fair Value, Over one year through five years	69,951
Fair Value, Over five years through ten years	4,768
Fair Value, Over ten years	136,388
Fair Value, Total	1,073,293	754,755
Held to maturity
Fair Value, Over one year through five years	1,136
Fair Value, Over five years through ten years	5,277
Fair Value, Over ten years	117,185
Fair Value, Total	225,337	227,892
Mortgage-Backed Securities: Residential [Member]
Available for sale
Amortized Cost, Mortgage-backed securities not due at a single maturity date	836,278
Amortized Cost	836,278	614,344
Held to maturity
Amortized Cost, Mortgage-backed securities not due at a single maturity date	103,788
Amortized Cost	103,788	106,169
Available for sale
Fair Value, Mortgage-backed securities not due at a single maturity date	828,031
Fair Value, Total	828,031	607,085
Held to maturity
Fair Value, Mortgage-backed securities not due at a single maturity date	101,739
Fair Value, Total	101,739	104,154
Mortgage-Backed Securities: Commercial [Member]
Available for sale
Amortized Cost, Mortgage-backed securities not due at a single maturity date	19,352
Amortized Cost	19,352	19,439
Available for sale
Fair Value, Mortgage-backed securities not due at a single maturity date	19,271
Fair Value, Total	$ 19,271	$ 19,334

Securities - Additional Informa

Securities - Additional Information (Detail) $ in Thousands	Mar. 31, 2017USD ($)Securities	Dec. 31, 2016USD ($)Securities
Marketable Securities [Line Items]
Carrying value of pledged securities | $	$ 1,105,158	$ 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	Mar. 31, 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	$ 845,677	$ 581,188
Less Than 12 Months Available for sale Unrealized Losses	(13,954)	(13,147)
12 Months or Longer Available for sale Fair Value	14,544	9,907
12 Months or Longer Available for sale Unrealized Losses	(532)	(375)
Available for sale Fair Value, Total	860,221	591,095
Available for sale Unrealized Losses, Total	(14,486)	(13,522)
Less Than 12 Months Held to maturity Fair Value	103,659	108,430
Less Than 12 Months Held to maturity Unrealized Losses	(2,415)	(2,451)
12 Months or Longer Held to maturity Fair Value	2,868	3,025
12 Months or Longer Held to maturity Unrealized Losses	(105)	(99)
Held to maturity Fair Value, Total	106,527	111,455
Held to maturity Unrealized Losses, Total	(2,520)	(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	69,951
Less Than 12 Months Available for sale Unrealized Losses	(148)
Available for sale Fair Value, Total	69,951
Available for sale Unrealized Losses, Total	(148)
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	656,782	465,416
Less Than 12 Months Available for sale Unrealized Losses	(8,708)	(7,833)
12 Months or Longer Available for sale Fair Value	14,544	9,907
12 Months or Longer Available for sale Unrealized Losses	(532)	(375)
Available for sale Fair Value, Total	671,326	475,323
Available for sale Unrealized Losses, Total	(9,240)	(8,208)
Less Than 12 Months Held to maturity Fair Value	86,722	89,523
Less Than 12 Months Held to maturity Unrealized Losses	(2,262)	(2,244)
12 Months or Longer Held to maturity Fair Value	2,868	3,025
12 Months or Longer Held to maturity Unrealized Losses	(105)	(99)
Held to maturity Fair Value, Total	89,590	92,548
Held to maturity Unrealized Losses, Total	(2,367)	(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	15,715	15,752
Less Than 12 Months Available for sale Unrealized Losses	(100)	(132)
Available for sale Fair Value, Total	15,715	15,752
Available for sale Unrealized Losses, Total	(100)	(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	103,229	100,020
Less Than 12 Months Available for sale Unrealized Losses	(4,998)	(5,182)
Available for sale Fair Value, Total	103,229	100,020
Available for sale Unrealized Losses, Total	(4,998)	(5,182)
Less Than 12 Months Held to maturity Fair Value	16,937	18,907
Less Than 12 Months Held to maturity Unrealized Losses	(153)	(207)
Held to maturity Fair Value, Total	16,937	18,907
Held to maturity Unrealized Losses, Total	$ (153)	$ (207)

Loans - Summary of Loans (Detai

Loans - Summary of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,948,242	$ 1,771,526
Deferred loan fees, net	(971)	(793)
Total loans that are not PCI loans	1,947,271	1,770,733
Allowance for loan losses	(18,105)	(16,553)	$ (12,676)	$ (11,587)
Net loans	1,931,610	1,757,039
Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Construction and land development	499,272	489,562
Allowance for loan losses	(3,837)	(3,776)	(3,378)	(3,186)
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	445,398	376,476
Allowance for loan losses	(6,885)	(6,068)	(3,875)	(3,358)
Consumer and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer and other	3,853	3,359
Allowance for loan losses	(52)	(45)	$ (59)	$ (36)
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,444	2,859
PCI Loans [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,847	1,969
Commercial Real Estate Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonfarm, nonresidential	509,060	458,569
Commercial Real Estate Financing Receivable [Member] | PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	408	394
Commercial Real Estate, Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other	39,690	38,571
Real Estate Residential Closed-end 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Closed-end 1-4 family	299,439	254,474
Real Estate Residential Closed-end 1-4 Family [Member] | PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	189	496
Residential Real Estate, Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other	$ 151,530	$ 150,515

Loans - Activity in Allowance f

Loans - Activity in Allowance for Loan Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 16,553	$ 11,587
Provision for loan losses	1,855	1,136
Loans charged-off	(323)	(76)
Recoveries	20	29
Total ending allowance balance	18,105	12,676
Construction and Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	3,776	3,186
Provision for loan losses	61	192
Total ending allowance balance	3,837	3,378
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	4,266	3,146
Provision for loan losses	393	418
Total ending allowance balance	4,659	3,564
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	2,398	1,861
Provision for loan losses	262	(89)
Recoveries	12	28
Total ending allowance balance	2,672	1,800
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	6,068	3,358
Provision for loan losses	1,117	582
Loans charged-off	(300)	(65)
Total ending allowance balance	6,885	3,875
Consumer and Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	45	36
Provision for loan losses	22	33
Loans charged-off	(23)	(11)
Recoveries	8	1
Total ending allowance balance	$ 52	$ 59

Loans - Additional Information

Loans - Additional Information (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans modified as troubled debt restructuring	1	1
Loans modified as troubled debt restructuring, Amount	$ 698	$ 698
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses for PCI loans	$ 1	$ 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	Mar. 31, 2017	Dec. 31, 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	$ 739	$ 1,024
Allowance for loan losses, Collectively evaluated for impairment	17,365	15,529
Total ending allowance balance	18,105	16,553	$ 12,676	$ 11,587
Loans, Individually evaluated for impairment	7,216	9,909
Loans, Collectively evaluated for impairment	1,941,026	1,761,617
Aging of Recorded Investment, Total	1,950,686	1,774,385
PCI Loans [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Purchased credit-impaired loans	1	0
Purchased credit-impaired loans	2,444	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	3,837	3,776
Total ending allowance balance	3,837	3,776	3,378	3,186
Loans, Individually evaluated for impairment		1,275
Loans, Collectively evaluated for impairment	499,272	488,287
Aging of Recorded Investment, Total	499,272	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	4,659	4,266
Total ending allowance balance	4,659	4,266	3,564	3,146
Loans, Individually evaluated for impairment	2,560	2,836
Loans, Collectively evaluated for impairment	546,190	494,304
Aging of Recorded Investment, Total	549,158	497,534
Commercial Real Estate [Member] | PCI Loans [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Purchased credit-impaired loans	408	394
Residential Real Estate [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	2,672	2,398
Total ending allowance balance	2,672	2,398	1,800	1,861
Loans, Individually evaluated for impairment	1,464	2,190
Loans, Collectively evaluated for impairment	449,505	402,799
Aging of Recorded Investment, Total	451,158	405,485
Residential Real Estate [Member] | PCI Loans [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Purchased credit-impaired loans	189	496
Commercial and Industrial [Member]
Allowance For Loan Losses And Recorded Investment In Loans [Line Items]
Allowance for loan losses, Individually evaluated for impairment	739	1,024
Allowance for loan losses, Collectively evaluated for impairment	6,145	5,044
Total ending allowance balance	6,885	6,068	3,875	3,358
Loans, Individually evaluated for impairment	3,192	3,608
Loans, Collectively evaluated for impairment	442,206	372,868
Aging of Recorded Investment, Total	447,245	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
Purchased credit-impaired loans	1,847	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	52	45
Total ending allowance balance	52	45	$ 59	$ 36
Loans, Collectively evaluated for impairment	3,853	3,359
Aging of Recorded Investment, Total	$ 3,853	$ 3,359

Loans - Summary of Impaired Loa

Loans - Summary of Impaired Loans by Class of Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	$ 6,412		$ 8,822
Unpaid Principal Balance	8,802		11,686
Recorded Investment, With no allowance recorded	4,826		7,235
Recorded Investment	7,216		9,909
Unpaid Principal Balance, With an allowance recorded	2,390		2,864
Recorded Investment, With an allowance recorded	2,390		2,674
Allowance for Loan Losses Allocated	739		1,024
Average Recorded Investment, With no allowance recorded	6,047	$ 3,769
Average Recorded Investment, With an allowance recorded	2,585	86
Average Recorded Investment	8,632	3,855
Commercial Real Estate Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	4,146		4,423
Recorded Investment, With no allowance recorded	2,560		2,836
Average Recorded Investment, With no allowance recorded	4,128	1,402
Real Estate Residential Closed-end 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	1,344		2,069
Recorded Investment, With no allowance recorded	1,344		2,069
Average Recorded Investment, With no allowance recorded	1,799	736
Residential Real Estate, Other [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	120		121
Recorded Investment, With no allowance recorded	120		121
Average Recorded Investment, With no allowance recorded	120	712
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded	802		934
Recorded Investment, With no allowance recorded	802		934
Unpaid Principal Balance, With an allowance recorded	2,390		2,864
Recorded Investment, With an allowance recorded	2,390		2,674
Allowance for Loan Losses Allocated	739		1,024
Average Recorded Investment, With no allowance recorded		21
Average Recorded Investment, With an allowance recorded	$ 2,585	86
Construction and Land Development [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no allowance recorded			1,275
Recorded Investment, With no allowance recorded			$ 1,275
Average Recorded Investment, With no allowance recorded		$ 898

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	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Nonaccrual	$ 3,346	$ 3,630
Recorded Investment, Loans Past Due Over 90 Days	690	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, Loans Past Due Over 90 Days	388	452
Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Loans Past Due Over 90 Days	200	1,950
Commercial and Industrial Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Nonaccrual	2,391	2,674
Recorded Investment, Loans Past Due Over 90 Days	102	150
Residential Real Estate, Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Nonaccrual	$ 120	$ 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	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Nonaccrual	$ 3,346	$ 3,630
Aging of Recorded Investment, Total Past Due	8,875	8,089
Aging of Recorded Investment, Loans Not Past Due	1,939,367	1,763,437
Aging of Recorded Investment, Total	1,950,686	1,774,385
Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	841	2,330
Aging of Recorded Investment, Loans Not Past Due	498,431	487,232
Aging of Recorded Investment, Total	499,272	489,562
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Nonaccrual	2,391	2,674
Aging of Recorded Investment, Total Past Due	2,647	3,018
Aging of Recorded Investment, Loans Not Past Due	442,751	373,458
Aging of Recorded Investment, Total	447,245	378,445
Consumer and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	7
Aging of Recorded Investment, Loans Not Past Due	3,846	3,359
Aging of Recorded Investment, Total	3,853	3,359
PCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, PCI Loans	2,444	2,859
PCI Loans [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, PCI Loans	1,847	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	3,207	1,499
Aging of Recorded Investment, Loans Not Past Due	505,853	457,070
Aging of Recorded Investment, Total	509,468	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	408	394
Commercial Real Estate, Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Loans Not Past Due	39,690	38,571
Aging of Recorded Investment, Total	39,690	38,571
Real Estate Residential Closed-end 1-4 Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	2,053	890
Aging of Recorded Investment, Loans Not Past Due	297,386	253,584
Aging of Recorded Investment, Total	299,628	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	189	496
Residential Real Estate, Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Nonaccrual	120	121
Aging of Recorded Investment, Total Past Due	120	352
Aging of Recorded Investment, Loans Not Past Due	151,410	150,163
Aging of Recorded Investment, Total	151,530	150,515
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	4,198	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		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	154	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	7
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	2,372	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	1,665	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	641	49
60 to 89 Days Past Due [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	641
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		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		10
Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Aging of Recorded Investment, Total Past Due	690	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	200	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	102	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	$ 388	$ 452

Loans - Summary of Risk Categor

Loans - Summary of Risk Category of Loans by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Risk Category Of Loans [Line Items]
Total Loans	$ 1,950,686	$ 1,774,385
Construction and Land Development [Member]
Risk Category Of Loans [Line Items]
Total Loans	499,272	489,562
Commercial and Industrial [Member]
Risk Category Of Loans [Line Items]
Total Loans	447,245	378,445
Consumer and Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	3,853	3,359
Commercial Real Estate Financing Receivable [Member]
Risk Category Of Loans [Line Items]
Total Loans	509,468	458,963
Commercial Real Estate, Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	39,690	38,571
Real Estate Residential Closed-end 1-4 Family [Member]
Risk Category Of Loans [Line Items]
Total Loans	299,628	254,970
Residential Real Estate, Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	151,530	150,515
Pass [Member]
Risk Category Of Loans [Line Items]
Total Loans	1,935,919	1,754,256
Pass [Member] | Construction and Land Development [Member]
Risk Category Of Loans [Line Items]
Total Loans	499,272	488,287
Pass [Member] | Commercial and Industrial [Member]
Risk Category Of Loans [Line Items]
Total Loans	442,567	373,243
Pass [Member] | Consumer and Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	3,853	3,359
Pass [Member] | Commercial Real Estate Financing Receivable [Member]
Risk Category Of Loans [Line Items]
Total Loans	502,021	449,373
Pass [Member] | Commercial Real Estate, Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	39,690	38,571
Pass [Member] | Real Estate Residential Closed-end 1-4 Family [Member]
Risk Category Of Loans [Line Items]
Total Loans	297,995	251,919
Pass [Member] | Residential Real Estate, Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	150,521	149,504
Special Mention [Member]
Risk Category Of Loans [Line Items]
Total Loans		1,847
Special Mention [Member] | Commercial Real Estate Financing Receivable [Member]
Risk Category Of Loans [Line Items]
Total Loans		1,847
Substandard [Member]
Risk Category Of Loans [Line Items]
Total Loans	14,767	18,282
Substandard [Member] | Construction and Land Development [Member]
Risk Category Of Loans [Line Items]
Total Loans		1,275
Substandard [Member] | Commercial and Industrial [Member]
Risk Category Of Loans [Line Items]
Total Loans	4,678	5,202
Substandard [Member] | Commercial Real Estate Financing Receivable [Member]
Risk Category Of Loans [Line Items]
Total Loans	7,447	7,743
Substandard [Member] | Real Estate Residential Closed-end 1-4 Family [Member]
Risk Category Of Loans [Line Items]
Total Loans	1,633	3,051
Substandard [Member] | Residential Real Estate, Other [Member]
Risk Category Of Loans [Line Items]
Total Loans	$ 1,009	$ 1,011

Loan Servicing - Schedule of Lo

Loan Servicing - Schedule of Loans Serviced Not Reported as Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Federal Home Loan Mortgage Corporation [Member]
Loans Servicing For Institutional Investors [Line Items]
Loan servicing rights, at fair value	$ 503,294	$ 499,385
Other Serviced Loans [Member]
Loans Servicing For Institutional Investors [Line Items]
Loan servicing rights, at fair value	$ 2,043	$ 2,954

Loan Servicing - Components of

Loan Servicing - Components of Net Loan Servicing Fees (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Transfers and Servicing [Abstract]
Loan servicing fees	$ 320	$ 293
Amortization of loan servicing fees	(213)	(251)
Change in impairment	0	0
Total	$ 107	$ 42

Loan Servicing - Additional Inf

Loan Servicing - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Transfers and Servicing [Abstract]
Fair value of servicing rights	$ 5,154	$ 4,635
Weighted average discount rate	10.50%	10.50%
Weighted average prepayment speed	9.50%	10.20%

Securities Sold Under Agreeme46

Securities Sold Under Agreement to Repurchase - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Total short-term borrowings	$ 31,339	$ 36,496
Carrying value of securities used to secure borrowings	$ 41,604	$ 41,136

Securities Sold Under Agreeme47

Securities Sold Under Agreement to Repurchase - Additional Details of Securities Sold under Agreement to Repurchase (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets Sold under Agreements to Repurchase [Line Items]
Market value of securities pledged	$ 42,120	$ 41,656
Borrowings related to pledged amounts	$ 31,339	$ 36,496
Market value pledged as a % of borrowings	134.00%	114.00%
U.S. Government Sponsored Entities and Agencies [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Market value of securities pledged	$ 60	$ 209
Mortgage-Backed Securities: Residential [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Market value of securities pledged	49	117
State and Political Subdivisions [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Market value of securities pledged	42,011	41,330
Borrowings related to pledged amounts	$ 31,339	$ 36,496
Market value pledged as a % of borrowings	134.00%	113.00%

Share-Based Payments - Addition

Share-Based Payments - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2017USD ($)Plans$ / sharesshares	Mar. 31, 2016USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants exercised	11,011	3,150
Number of share-based compensation plans | Plans	2
Compensation cost charged against income | $	$ 447,000	$ 258,000
Excess tax benefit related to vesting of restricted stock and exercise of stock options | $	93,000	$ 0
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 | $	$ 1,524,000
Unrecognized compensation cost, period of recognition	3 years 3 months 11 days
Shares, Vested	0	0
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 options authorized	4,000,000
Options contractual term	10 years
Number of shares authorized for issuance	1,989,762
Weighted average fair value of options | $ / shares	$ 17.25	$ 10.45
Unrecognized compensation cost, nonvested stock options | $	$ 3,826,000
Unrecognized compensation cost, period of recognition	3 years 9 months 18 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
Shares issuable upon exercise of warrants to purchase common stock	20

Share-Based Payments - Summary

Share-Based Payments - Summary of Stock Warrant Activity (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Intrinsic value of warrants exercised	$ 291	$ 61
Cash received from warrants exercised	$ 132	$ 38

Share-Based Payments - Fair Val

Share-Based Payments - Fair Value Assumptions of Stock Options (Detail) - 2007 Omnibus Equity Incentive Plan [Member] - Stock Option [Member]	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.28%	1.99%
Expected term	7 years 4 months 24 days	7 years 6 months
Expected stock price volatility	34.20%	29.14%
Dividend yield	0.04%	0.24%

Share-Based Payments - Summar51

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	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding, Beginning Balance	1,395,016
Shares, Granted	25,500
Shares, Exercised	(21,581)
Shares, Forfeited, expired, or canceled	(430)
Shares, Outstanding, Ending Balance	1,398,505	1,395,016
Shares, Vested or expected to vest	1,328,580
Shares, Exercisable at period end	726,927
Weighted Average Exercise Price, Outstanding, Beginning Balance	$ 16.70
Weighted Average Exercise Price, Granted	41.85
Weighted Average Exercise Price, Exercised	10.64
Weighted Average Exercise Price, Forfeited, expired, or cancelled	25.30
Weighted Average Exercise Price, Outstanding, Ending Balance	17.25	$ 16.70
Weighted Average Exercise Price, Vested or expected to vest	17.25
Weighted Average Exercise Price, Exercisable at period end	$ 11.77
Weighted Average Remaining Contractual Term, Outstanding at beginning of year	6 years 3 months	6 years 4 months 21 days
Weighted Average Remaining Contractual Term, Vested or expected to vest	6 years 3 months
Weighted Average Remaining Contractual Term, Exercisable at period end	4 years 5 months 16 days
Aggregate Intrinsic Value, Outstanding, at beginning of year	$ 30,074	$ 35,090
Aggregate Intrinsic Value, Vested or expected to vest	29,584
Aggregate Intrinsic Value, Exercisable at period end	$ 19,790

Share-Based Payments - Summar52

Share-Based Payments - Summary of Stock Options Exercised (Detail) - 2007 Omnibus Equity Incentive Plan [Member] - Stock Option [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Stock options exercised:
Intrinsic value of options exercised	$ 610	$ 242
Cash received from options exercised	177	$ 118
Tax benefit realized from option exercises	$ 93

Share-Based Payments - Summar53

Share-Based Payments - Summary of Activity for Nonvested Restricted Share Awards (Detail) - Restricted Stock [Member] - 2007 Omnibus Equity Incentive Plan [Member] - $ / shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Non-vested, Beginning Balance	106,458
Shares, Granted	0
Shares, Vested	0	0
Shares, Forfeited	(180)
Shares, Non-vested, Ending Balance	106,278
Weighted-Average Grant-Date Fair Value, Non-vested, Beginning Balance	$ 19.81
Weighted-Average Grant-Date Fair Value, Granted	0
Weighted-Average Grant-Date Fair Value, Vested	0
Weighted-Average Grant-Date Fair Value, Forfeited	25.67
Weighted-Average Grant-Date Fair Value, Non-vested, Ending Balance	$ 19.80

Regulatory Capital Matters - Ad

Regulatory Capital Matters - Additional Information (Detail)	3 Months Ended
	Mar. 31, 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	2,017
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	Mar. 31, 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	$ 272,242	$ 263,693
Total Capital to risk-weighted assets, Actual Amount	348,821	338,675
Tier 1 (Core) Capital to risk weighted assets, Actual Amount	272,242	263,693
Tier 1 (Core) Capital to average assets, Actual Amount	$ 272,242	$ 263,693
Common equity Tier 1 capital to risk-weighted assets	11.32%	11.75%
Total Capital to risk weighted assets, Actual Ratio	14.51%	15.09%
Tier 1 (Core) Capital to risk weighted assets, Actual Ratio	11.32%	11.75%
Tier 1 (Core) Capital to average assets, Actual Ratio	8.36%	9.28%
Common equity Tier 1 capital to risk-weighted assets	$ 108,178	$ 101,022
Total Capital to risk weighted assets, Required For Capital Adequacy Purposes Amount	192,316	179,595
Tier 1 (Core) Capital to risk weighted assets, Required For Capital Adequacy Purposes Amount	144,237	134,696
Tier 1 (Core) Capital to average assets, Required For Capital Adequacy Purposes Amount	$ 130,289	$ 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	$ 327,134	$ 319,005
Total Capital to risk-weighted assets, Actual Amount	345,332	335,650
Tier 1 (Core) Capital to risk weighted assets, Actual Amount	327,134	319,005
Tier 1 (Core) Capital to average assets, Actual Amount	$ 327,134	$ 319,005
Common equity Tier 1 capital to risk-weighted assets	13.58%	14.18%
Total Capital to risk weighted assets, Actual Ratio	14.34%	14.92%
Tier 1 (Core) Capital to risk weighted assets, Actual Ratio	13.58%	14.18%
Tier 1 (Core) Capital to average assets, Actual Ratio	10.05%	11.22%
Common equity Tier 1 capital to risk-weighted assets	$ 108,376	$ 101,216
Total Capital to risk weighted assets, Required For Capital Adequacy Purposes Amount	192,669	179,939
Tier 1 (Core) Capital to risk weighted assets, Required For Capital Adequacy Purposes Amount	144,502	134,954
Tier 1 (Core) Capital to average assets, Required For Capital Adequacy Purposes Amount	$ 130,201	$ 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	$ 156,544	$ 146,201
Total Capital to risk weighted assets, To Be Well Capitalized Under Prompt Corrective Action Regulations Amount	240,836	224,924
Tier 1 (Core) Capital to risk weighted assets, To Be Well Capitalized Under Prompt Corrective Action Regulations Amount	192,669	179,939
Tier 1 (Core) Capital to average assets, To Be Well Capitalized Under Prompt Corrective Action Regulations Amount	$ 162,751	$ 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		12 Months Ended
	Mar. 31, 2017	Mar. 31, 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	$ 2,334,000	$ 1,608,000
Carrying amount of impaired loans with specific allocations	7,216,000		$ 9,909,000
Additional provision for loan losses	1,855,000	1,136,000
Foreclosed assets	1,315,000		0
Write-down value during period	0	0
Loans Held for Sale [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Unpaid principal balance of loans held for sale	12,327,000		23,457,000
Change in fair value related to loans held for sale	355,000		242,000
Change in fair value of loans held for sale	113,000	38,000
Fair Value [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Carrying amount of impaired loans with specific allocations	1,650		$ 1,650
Changes Measurement [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Additional provision for loan losses	$ 0	$ 0
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	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	$ 1,073,293	$ 754,755
Loans held for sale	12,682	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	69,951
Mortgage-Backed Securities: Residential [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	828,031	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	19,271	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	156,040	128,336
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	1,073,293	754,755
Loans held for sale	12,682	23,699
Mortgage banking derivatives	926	229
Mortgage banking derivatives	149	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	69,951
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	828,031	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	19,271	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	$ 156,040	$ 128,336

Fair Value - Carrying Amount an

Fair Value - Carrying Amount and Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Carrying Amount	$ 114,664	$ 90,927	$ 62,054	$ 52,394
Certificates of deposit held at other financial institutions	2,035	1,055
Securities available for sale	1,073,293	754,755
Securities held to maturity, Carrying Amount	226,056	228,894
Securities held to maturity, Fair Value	225,337	227,892
Loans held for sale, Fair Value	12,682	23,699
Net loans, Carrying Amount	1,931,610	1,757,039
Servicing rights, net, Carrying Amount	3,593	3,621
Servicing rights, net, Fair Value	5,154	4,635
Accrued interest receivable	10,516	9,931
Deposits, Carrying Amount	2,817,212	2,391,818
Federal funds purchased and repurchase agreements, Carrying Amount	70,430	83,301
Federal Home Loan Bank advances, Carrying Amount	217,000	132,000
Subordinated notes, net	58,381	58,337
Accrued interest payable	1,993	1,924
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents , Fair Value	114,657	90,927
Certificates of deposit held at other financial institutions, Fair Value	2,035	1,055
Securities available for sale	1,073,293	754,755
Securities held to maturity, Fair Value	225,337	227,892
Loans held for sale, Fair Value	12,682	23,699
Net loans, Fair Value	1,899,549	1,727,188
Restricted equity securities, Fair Value	0	0
Servicing rights, net, Fair Value	5,154	5,015
Accrued interest receivable	10,516	9,931
Deposits, Fair Value	2,788,909	2,387,905
Federal funds purchased and repurchase agreements, Fair Value	70,430	83,301
Federal Home Loan Bank advances, Fair Value	215,371	131,098
Subordinated notes, net	62,181	61,762
Accrued interest payable	1,993	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	114,657	90,927
Restricted equity securities, Fair Value	0	0
Deposits, Fair Value	1,608,606	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	2,035	1,055
Securities available for sale	1,073,293	754,755
Securities held to maturity, Fair Value	225,337	227,892
Loans held for sale, Fair Value	12,682	23,699
Restricted equity securities, Fair Value	0	0
Servicing rights, net, Fair Value	5,154	5,015
Accrued interest receivable	5,589	5,172
Deposits, Fair Value	1,180,303	836,444
Federal funds purchased and repurchase agreements, Fair Value	70,430	83,301
Federal Home Loan Bank advances, Fair Value	215,371	131,098
Accrued interest payable	1,610	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	1,899,549	1,727,188
Restricted equity securities, Fair Value	0	0
Accrued interest receivable	4,927	4,759
Subordinated notes, net	62,181	61,762
Accrued interest payable	350	695
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Carrying Amount	114,657	90,927
Certificates of deposit held at other financial institutions	2,035	1,055
Securities available for sale	1,073,293	754,755
Securities held to maturity, Carrying Amount	226,056	228,894
Loans held for sale, Carrying Amount	12,682	23,699
Net loans, Carrying Amount	1,931,610	1,757,039
Restricted equity securities, Carrying Amount	14,978	11,843
Servicing rights, net, Carrying Amount	3,593	3,621
Accrued interest receivable	10,516	9,931
Deposits, Carrying Amount	2,817,212	2,391,818
Federal funds purchased and repurchase agreements, Carrying Amount	70,430	83,301
Federal Home Loan Bank advances, Carrying Amount	217,000	132,000
Subordinated notes, net	58,381	58,337
Accrued interest payable	$ 1,993	$ 1,924

Earnings Per Share - Computatio

Earnings Per Share - Computation of Earnings per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Basic
Net income available to common shareholders	$ 7,934	$ 6,210
Less: earnings allocated to participating securities	(65)	(64)
Net income allocated to common shareholders	$ 7,869	$ 6,146
Weighted average common shares outstanding including participating securities	13,049,012	10,580,304
Less: Participating securities	(106,323)	(109,064)
Average shares	12,942,689	10,471,240
Basic earnings per common share	$ 0.61	$ 0.59
Diluted
Net income allocated to common shareholders	$ 7,869	$ 6,146
Weighted average common shares outstanding for basic earnings per common share	12,942,689	10,471,240
Add: Dilutive effects of assumed exercises of stock options	708,694	622,743
Add: Dilutive effects of assumed exercises of stock warrants	5,974	12,426
Average shares and dilutive potential common shares	13,657,357	11,106,409
Dilutive earnings per common share	$ 0.58	$ 0.55

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Stock options to purchase shares of the Company's common stock	108,000	62,167

Subordinated Debt Issuance - Ad

Subordinated Debt Issuance - Additional Information (Detail) - USD ($)	1 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Subordinated notes, net of issuance costs			$ 58,381,000	$ 58,337,000
Subordinated Debt [Member]
Debt Instrument [Line Items]
Notes, Aggregate principal amount	$ 20,000,000	$ 40,000,000	$ 60,000,000
Notes, Interest rate	7.00%	6.875%
Notes, Issuance cost	$ 404,000	$ 1,382,000
Term of notes	10 years	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	Mar. 31, 2017
Debt Instrument [Line Items]
Principal amount issued	$ 20,000,000	$ 40,000,000	$ 60,000,000
Maturity date	Jul. 1, 2026	Mar. 30, 2026
Initial fixed interest rate	7.00%	6.875%
Initial interest rate period	10 years	10 years
First interest rate change date	Jul. 1, 2021	Mar. 30, 2021
Interest payment frequency through year five	Semiannually	Semiannually
Interest payment frequency after five years	Quarterly	Quarterly
Initial Term [Member]
Debt Instrument [Line Items]
Initial interest rate period	5 years	5 years
LIBOR [Member]
Debt Instrument [Line Items]
Interest repricing index and margin	3-month LIBOR plus 6.04%	3-month LIBOR plus 5.636%
Interest payment frequency through year five	Quarterly	Quarterly