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LEASES - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Operating Leased Assets [Line Items]          
Operating lease right of use asset $ 722   $ 722   $ 922
Current portion of operating lease liability 281   281   288
Operating lease, liability, noncurrent 544   544   $ 758
Total lease expense $ 152 $ 186 $ 485 $ 466  
Minimum          
Operating Leased Assets [Line Items]          
Term of contract 1 year   1 year    
Maximum          
Operating Leased Assets [Line Items]          
Term of contract 4 years   4 years    
Renewal term 5 years   5 years