Income Taxes - Components of Net Deferred Tax Assets (Liabilities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Allowance for loan losses	$ 13,248	$ 11,555
Net unrealized losses on securities	3,112	0
OREO expenses	728	588
Non-accrual interest	840	541
Net operating losses	2,290	1,892
Deferred compensation	1,337	1,361
Equity-based compensation	5,196	3,751
Fair value adjustments on acquisitions	428	0
Cash flow hedge	1,679	681
Incentive compensation	2,497	1,558
Other	1,374	1,120
Total deferred tax assets	32,729	23,047
Deferred tax liabilities:
Fair value adjustments on acquisitions	0	(2,002)
Net unrealized gains on securities	0	(615)
Net deferred loan fees	(2,688)	(4,524)
Bank premises and equipment	(875)	(1,009)
Other	(592)	(1,140)
Total deferred tax liabilities	(4,155)	(9,290)
Net deferred tax asset	$ 28,574	$ 13,757