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DEBT FINANCING - Summary of Long-term Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Debt Disclosure [Abstract]    
Principal amount of long term debt $ 26,000 $ 26,000
Debt discount (351) (456)
Deferred financing fees (534) (647)
Long term debt, net $ 25,115 $ 24,897