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ACCRUED LIABILITIES (Tables)
 9 Months Ended
Sep. 30, 2021
Payables and Accruals [Abstract]  
Schedule of Accrued Liabilities
Accrued liabilities consisted of the following (in thousands):
September 30,
2021		December 31,
2020
Accrued compensation$1,255 $1,369 
Accrued contracted research and development services 1,242 3,733 
Accrued professional fees312 318 
Total$2,809 $5,420