Quarterly report pursuant to Section 13 or 15(d)

Organization and Nature of Operations - Additional Information (Details)

v3.21.2
Organization and Nature of Operations - Additional Information (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]      
Accumulated deficit $ 169,985   $ 153,202
Net cash used in operating activities for continuing and discontinued operations 21,914 $ 18,890  
Cash and cash equivalents $ 20,616   $ 23,906