Income Taxes - Schedule of Significant Portions of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Allowance for loan losses	$ 6,847	$ 6,668
Reserve for repurchased loans	403	422
Reserve for uncollected interest	382	449
Incentive compensation	1,245	1,273
Deferred compensation	644	605
Other reserves	95	43
Stock plans	1,894	1,517
ESOP	198	165
Intangible assets		22
Fair value adjustments related to acquisition	613
Net operating loss carryforward related to acquisition	2,177
Other real estate owned	128	379
Unrealized loss on securities	4,311	4,909
State alternative minimum tax	1,160	1,160
Total gross deferred tax assets	20,097	17,612
Deferred tax liabilities:
Core deposit intangible	(105)
Excess servicing on sale of mortgage loans	(99)	(136)
Investments, discount accretion	(444)	(435)
Deferred loan and commitment costs, net	(1,224)	(1,128)
Premises and equipment, differences in depreciation	(237)	(294)
Undistributed REIT income	(1,181)
Total gross deferred tax liabilities	(3,290)	(1,993)
Net deferred tax assets	$ 16,807	$ 15,619