XML 41 R27.htm IDEA: XBRL DOCUMENT v3.21.1
Accrued Liabilities (Tables)
12 Months Ended
Dec. 31, 2020
Payables and Accruals [Abstract]  
Summary of Accrued Liabilities
    As of December 31,  
    2020     2019  
             
Employee-related liabilities   $ 619     $ 187  
Accrued expenses from the merger     131       131  
Accrued expenses     264       464  
    $ 883     $ 795