Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Right-of-use assets under finance leases	$ 1,343	$ 1,571
Total	63,203	56,722
Less: accumulated depreciation and amortization	(26,370)	(17,802)
Property and equipment, net	36,833	38,920
Computer software and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	29,203	22,930
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	5,944	6,011
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 26,713	$ 26,210