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Property and Equipment, Net - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Property, Plant and Equipment [Abstract]        
Depreciation $ 2,755,000 $ 1,937,000 $ 7,068,000 $ 7,367,000
Amortization expense of internal-use software $ 47,000 $ 0 $ 61,000 $ 0