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INCOME TAXES - Components of Income Tax Expenses (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Current year expense (benefit):        
Federal $ 145 $ 238 $ 202 $ 126
State (9) (1) (7) (3)
Current year expense (benefit) 136 237 195 123
Deferred expense:        
Federal 371 10 735 732
State 9 5 10 11
Deferred tax expense 380 15 745 743
Income tax expense $ 516 $ 252 $ 940 $ 866