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EMPLOYEE STOCK COMPENSATION - Option Activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
Mar. 31, 2017
Jun. 30, 2017
Dec. 31, 2016
Number of Shares        
Outstanding at beginning of period (in shares) 877,591 968,591 968,591  
Granted (in shares) 0   0  
Exercised (in shares) (40,786)   (131,786)  
Forfeited (in shares) (96,000)   (96,000)  
Outstanding at end of period (in shares) 740,805 877,591 740,805 968,591
Exercisable at end of period (in shares) 475,075   475,075  
Weighted-Average Exercise Price Per Share        
Outstanding at beginning of period (in dollars per share) $ 14.14 $ 13.95 $ 13.95  
Granted (in dollars per share) 0.00   0.00  
Exercised (in dollars per share) 12.41   12.17  
Forfeited (in dollars per share) 17.50   17.50  
Outstanding at end of period (in dollars per share) 13.80 $ 14.14 13.80 $ 13.95
Exercisable at end of period (in dollars per share) $ 13.33   $ 13.33  
Weighted-Average Remaining Contract Term        
Outstanding 7 years 22 days 6 years 6 months 7 years 22 days 6 years 4 months 10 days
Granted    
Exercised 6 years 11 months 8 days   9 years 8 months 27 days  
Forfeited 8 years 9 months 1 day   8 years 9 months 1 day  
Exercisable at end of period 6 years 6 months 25 days   6 years 6 months 25 days  
Aggregated Intrinsic Value (In thousands)        
Outstanding $ 5,702 $ 5,755 $ 5,702 $ 3,336
Exercisable at end of period $ 3,881   $ 3,881