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EMPLOYEE BENEFIT PLANS - Incentive Compensations Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock shares reserved   10,646,729   10,646,729    
Shares available for grant   1,811,843   1,811,843    
Stock based compensation expense   $ 1,900 $ 2,200 $ 5,651 $ 8,776  
Restricted stock grants- shares       400,788    
Weighted average grant date fair value (in dollars per share)       $ 12.53    
Stock option grants- shares       593,129    
Phantom Share Units (PSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Deferred compensation payout period 3 years          
Noncurrent deferred compensation liability   400   $ 400   $ 1,000
Share-based compensation expense   (1,100) 500 $ (400) 900  
Performance cash            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award requisite service period       3 years    
Performance cash compensation liability   3,900   $ 3,900   $ 7,700
Performance cash compensation expense   $ (1,300) $ (800) $ (200) $ 600