Quarterly report pursuant to Section 13 or 15(d)

ACCRUED LIABILITIES - Summary of Accrued Liabilities (Details)

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ACCRUED LIABILITIES - Summary of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Payables and Accruals [Abstract]    
Accrued contracted research and development services $ 3,436 $ 4,532
Accrued compensation 1,128 59
Accrued license fee 1,000 0
Accrued professional fees 478 1,788
Total $ 6,042 $ 6,379