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ACCRUED LIABILITIES (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Accrued short term liabilities    
Accrued milestone and royalty payments $ 354 $ 1,475
Accrued clinical costs 1,584 63
Accrued compensation and board fees 1,475 1,144
Accrued rent   44
Accrued manufacturing costs 760  
Other 377 525
Total $ 4,550 $ 3,251