Quarterly report pursuant to Section 13 or 15(d)

Organization (Details)

v3.22.1
Organization (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Accumulated deficit $ 213,487   $ 208,867
Cash used in operations 4,206 $ 2,000  
Cash 36,176   $ 40,406
Debt covenant, unrestricted cash 2,000    
Unrestricted cash $ 34,176