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EMPLOYEE STOCK COMPENSATION - Nonvested Stock Option Activity (Detail) - $ / shares
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2018
Number of Shares    
Non-vested outstanding at beginning of period (in shares) 73,324 105,432
Vested (in shares) (9,476) (41,584)
Non-vested outstanding at end of period (in shares) 63,848 63,848
Weighted- Average Exercise Price per Share    
Non-vested outstanding at beginning of period (in dollars per share) $ 13.32 $ 13.31
Vested (in dollars per share) 13.46 13.32
Non-vested outstanding at end of period (in dollars per share) $ 13.30 $ 13.30