ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Accrued short-term liabilities
Accrued licensing, milestone and royalty payments	$ 1,334	$ 354
Accrued clinical costs	729	1,584
Accrued compensation and board fees	3,853	1,475
Accrued manufacturing costs	1,319	760
Other	335	377
Total	$ 7,570	$ 4,550