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INCOME TAXES - Components of Federal Income Tax Expenses (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Current year provision (benefit):      
Federal $ 844 $ 81 $ 60
State (7) 10 (266)
Current income tax expense (benefit) 837 91 (206)
Deferred tax expense      
Federal 779 2,723 1,253
State 18 18 18
Deferred tax expense (benefit) 797 2,741 1,271
Change in valuation allowance on deferred taxes 0 (18,964) (1,271)
Net federal income tax expense (benefit) $ 1,634 $ (16,132) $ (206)