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Property and Equipment - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Depreciation, Amortization and Accretion Expenses [Member]        
Property Plant And Equipment [Line Items]        
Impairment charges. Property, Plant, and Equipment $ 1.2 $ 2.7 $ 6.4 $ 8.2