Quarterly report pursuant to Section 13 or 15(d)

NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)

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NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]            
Net loss $ 11,836 $ 6,434 $ 37,597 $ 36,357    
Accumulated deficit 732,933 $ (688,215) 732,933 $ (688,215) $ 695,336 $ (681,781)
Cash, cash equivalents, restricted cash and short-term investments 54,100   54,100      
Other receivables $ 2,100   $ 2,100