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INCOME TAXES - Components of Income Tax Expenses (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Current year expense (benefit):    
Federal $ 57 $ (112)
State 2 (2)
Current year expense (benefit) 59 (114)
Deferred expense:    
Federal 364 722
State 1 6
Deferred tax expense 365 728
Income tax expense $ 424 $ 614