Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION AND NATURE OF OPERATIONS - Narrative (Details)

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ORGANIZATION AND NATURE OF OPERATIONS - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]                  
Net loss $ (4,326) $ (5,119) $ (4,103) $ (4,781) $ (3,654) $ (4,580) $ (13,548) $ (13,015)  
Net cash used in operating activities             (15,283) $ (21,940)  
Cash and cash equivalents 20,174           20,174   $ 7,232
Accumulated Deficit $ 98,528           $ 98,528   $ 84,980