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EQUITY-BASED COMPENSATION - Performance-Based Restricted Stock Awards (Details) - Restricted Stock Awards - Performance-Based - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 06, 2017
Mar. 08, 2016
Mar. 31, 2017
Dec. 31, 2016
Number of Shares        
Non-vested at the beginning of period (in shares)     449,027  
Granted (in shares)     180,039  
Vested (in shares)     (39,959)  
Non-vested at the end of period (in shares)     589,107  
Weighted Average Grant Date Fair Value        
Non-vested at the beginning of period (in dollars per share)     $ 14.90  
Granted (in dollars per share)     17.13  
Vested (in dollars per share)     7.12  
Non-vested at the end of period (in dollars per share)     $ 16.11  
Aggregate Current Value        
Non-vested outstanding     $ 9,414 $ 7,198
Executive officers        
Number of Shares        
Granted (in shares) 180,039 254,563