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STOCK-BASED COMPENSATION, Performance Based Equity Awards (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Performance Shares [Member]      
Performance Based Equity Awards [Abstract]      
Percentage of threshold target for each award eligible to be earned based on relative performance   50.00%  
Percentage of target for each award eligible to be earned based on relative performance   100.00%  
Percentage of maximum target for each award eligible to be earned based on relative performance   150.00%  
Award vesting period   3 years  
Information Related to Stock Awards [Abstract]      
Compensation expense recognized $ 3   $ 152
Sales Incentive Award Program [Member]      
Performance Based Equity Awards [Abstract]      
Unrecognized compensation cost 130   130
Award vesting period   1 year  
Information Related to Stock Awards [Abstract]      
Compensation expense recognized $ 75   $ 75