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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, 2016
Mar. 31, 2016
Jun. 30, 2016
Dec. 31, 2015
Number of Shares        
Outstanding at beginning of period (in shares) 1,010,879 960,879 960,879  
Granted (in shares) 240,000   320,000  
Cash settled (in shares) (55,826)   (55,826)  
Forfeited (in shares) (83,743)   (113,743)  
Expired (in shares) (2,053)   (2,053)  
Outstanding at end of period (in shares) 1,109,257 1,010,879 1,109,257 960,879
Exercisable at end of period (in shares) 466,979   466,979  
Weighted- Average Exercise Price per Share        
Outstanding at beginning of period (in dollars per share) $ 13.05 $ 12.86 $ 12.86  
Granted (in dollars per share) 17.50   16.78  
Cash settled (in dollars per share) 14.33   14.33  
Forfeited (in dollars per share) 14.33   13.55  
Expired (in dollars per share) 13.88   13.88  
Outstanding at end of period (in dollars per share) 13.84 $ 13.05 13.84 $ 12.86
Exercisable at end of period (in dollars per share) $ 12.57   $ 12.57  
Weighted- Average Remaining Contract Term        
Outstanding 8 years 3 months 14 days 7 years 1 month 6 days 8 years 3 months 24 days 6 years 10 months 27 days
Granted 9 years 9 months 1 day   9 years 8 months 9 days  
Cash settled 2 years 3 months 22 days   2 years 3 months 22 days  
Forfeited 2 years 3 months 22 days   3 years 4 months 22 days  
Expired 0 years   0 years  
Exercisable at end of period 6 years 7 months 21 days   6 years 7 months 21 days  
Aggregated Intrinsic Value (In thousands)        
Outstanding $ 4,714 $ 1,973 $ 4,714 $ 796
Granted    
Exercisable at end of period $ 2,582   $ 2,582