XML 84 R72.htm IDEA: XBRL DOCUMENT v3.21.2
Income Taxes - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Operating Loss Carryforwards [Line Items]          
Provision for income tax $ 0.0 $ 0.0 $ 0.0 $ 0.0  
Other liabilities          
Operating Loss Carryforwards [Line Items]          
Deferred tax liability, net         $ 1.1