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STOCKHOLDERS' EQUITY - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Value of shares repurchased and retired   $ 300   $ 5,000
Common shares left remaining to repurchase under the plan (up to) (in shares) 510,004   510,004  
Selling, General and Administrative Expenses [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation $ 1,000 $ 1,000 $ 2,500 $ 2,400
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period     3 years  
Vested in period, net (in shares) 5,233 5,460 230,986 155,914
Common Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares repurchased and retired (in shares)   33,000 0 432,439
Shares repurchased (in dollars per share)       $ 11.54