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SHARE-BASED PAYMENTS - Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures     566,102   296,450
Share-based Payment Arrangement, Expense $ 1,000 $ 660 $ 1,700 $ 1,780  
R S U Weighted          
Number of Shares          
Number of nonvested shares, beginning of period (in shares)     1,315,536    
Granted, nonvested, number of shares (in shares)     735,146    
Vested, number of shares (in shares)     (746,477)    
Nonvested options forfeited, number of shares (in shares)     0    
Number of nonvested shares, end of period (in shares) 1,304,205   1,304,205   1,315,536
Weighted Average Grant Date Fair Value          
Nonvested, weighted average grant date fair value, beginning of period (in dollars per share)     $ 2.45    
Granted, nonvested, weighted average grant date fair value (in dollars per share)     1.66    
Vested, weighted average grant date fair value (in dollars per share)     2.46    
Nonvested options forfeited, weighted average grant date fair value (in dollars per share)     0    
Nonvested, weighted average grant date fair value, end of period (in dollars per share) $ 2.01   $ 2.01   $ 2.45
Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures     740,000 720,000