XML 69 R56.htm IDEA: XBRL DOCUMENT v3.21.2
Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Operating Expense        
Loss Contingencies [Line Items]        
Rent expense $ 0.5 $ 0.3 $ 1.6 $ 0.9