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COMPENSATION PROGRAMS - Schedule of Performance-Based Restricted Stock Units Activity (Details) - Performance-based RSUs [Member] - $ / shares
1 Months Ended 9 Months Ended
Jan. 31, 2018
Jan. 31, 2017
Feb. 29, 2016
Sep. 30, 2018
Equity instruments other than options, nonvested, number of shares [Roll Forward]        
Unvested equity awards outstanding at beginning of period (in shares) 435,976     435,976
Grants (in shares) 183,137 148,894 269,354  
Unvested equity outstanding at end of period (in shares)       501,858
Equity instruments other than options, nonvested, weighted average grant date fair value [Abstract]        
Unvested equity awards outstanding at beginning of period (in dollars per share) $ 9.10     $ 9.10
Grants (in dollars per share) $ 8.71 $ 10.52 $ 8.03  
Unvested equity awards outstanding at end of period (in dollars per share)       $ 9.02
January 2018 [Member]        
Equity instruments other than options, nonvested, number of shares [Roll Forward]        
Grants (in shares)       183,137
Equity instruments other than options, nonvested, weighted average grant date fair value [Abstract]        
Grants (in dollars per share)       $ 8.71
Remaining 2015 Grants [Member]        
Equity instruments other than options, nonvested, number of shares [Roll Forward]        
Forfeitures (in shares)       (117,255)
Equity instruments other than options, nonvested, weighted average grant date fair value [Abstract]        
Forfeitures (in dollars per share)       $ 8.83