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STOCKHOLDERS’ EQUITY (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2020
Oct. 31, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Aug. 10, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares vested (shares) 14,000            
Subsequent event              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares vested (shares)   18,500          
Restricted stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Grants in period to each independent member of board of directors (shares) 6,500            
Total grants in period (shares) 32,500            
Vesting period 1 year            
Restricted stock | General and administrative expenses              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation expense     $ 40 $ 34 $ 120 $ 98  
Common stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized (shares)             400,000
Number of shares available for future grants (shares) 367,500   367,500   367,500