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STOCK-BASED COMPENSATION - Narrative (Details) - USD ($)
$ in Thousands
9 Months Ended
Mar. 13, 2020
Sep. 30, 2020
Sep. 30, 2019
Jun. 30, 2017
May 31, 2017
Jun. 30, 2016
May 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense   $ 491 $ 429        
Chief Executive Officer              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Common stock granted to CEO (in shares) 100,000            
Restricted Stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Grant of restricted common stock (in shares)   198,000 151,000        
Restricted Stock | First Anniversary of Grant Date              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting percentage of awards   33.33%          
Restricted Stock | Second Anniversary of Grant Date              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting percentage of awards   33.33%          
Restricted Stock | Third Anniversary of Grant Date              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting percentage of awards   33.33%          
2008 Stock Purchase Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Percentage of quoted market price offering rate   85.00%          
Restriction period   2 years          
Shares authorized under the plan (in shares)           350,000 150,000
2010 Long Term Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares reserved for future issuance (in shares)       680,000 380,000