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STOCK-BASED COMPENSATION (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Additional disclosures    
Compensation expense, net of forfeitures $ 466 $ 513
Restricted Stock    
STOCK-BASED COMPENSATION    
Weighted average value (in dollars per share) $ 22.61  
Service period over which value of the shares is amortized to compensation expense 3 years  
Number of Nonvested Restricted Shares    
Outstanding at beginning of period (in shares) 308,542  
Awarded (in shares) 87,696  
Vested (in shares) (2,482)  
Forfeited (in shares) (14,169)  
Outstanding at end of period (in shares) 379,587  
Additional disclosures    
Compensation expense, net of forfeitures $ 466 $ 513
Restricted Stock | Performance based vesting    
Number of Nonvested Restricted Shares    
Awarded (in shares) 28,025