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EMPLOYEE STOCK COMPENSATION - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jul. 16, 2013
Aug. 21, 2012
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Stock option awards | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     3 years    
Award expiration period     7 years    
Stock option awards | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     5 years    
Award expiration period     10 years    
Restricted stock awards and restricted stock units | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     1 year    
Restricted stock awards and restricted stock units | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     5 years    
Initial SAR | Chief Executive Officer          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period   2 years      
Award expiration period   10 years      
SARs granted (in shares)   500,000      
Base price per share (in dollars per share)   $ 12.12      
Initial SAR | Tranche One | Chief Executive Officer          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of vesting award rights   33.33%      
Performance based restricted stock | Chief Executive Officer          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Aggregate grant date fair value market value     $ 5.0    
Stock appreciation rights          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
SARs granted (in shares)     0 0 2,973
2013 Omnibus Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common stock shares authorized percentage under the plan 20.00%        
Minimum requirement of number of shares authorized 2,384,711        
Common stock available under new plan     1,277,247