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STOCKHOLDERS' EQUITY - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Value of shares repurchased and retired   $ 2,885
Common shares left remaining to repurchase under the plan (up to) (in shares) 510,004  
Selling, General and Administrative Expenses [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation $ 500 $ 500
Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period 3 years  
Vested in period, net (in shares) 176,436 101,834
Common Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares repurchased and retired (in shares) 0 242,400
Shares repurchased (in dollars per share)   $ 11.88