Property and Equipment, Net - Components of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 104,756	$ 82,718
Less: accumulated depreciation and amortization	(44,245)	(35,521)
Total property and equipment, net	60,511	47,197
Computers and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	13,783	11,490
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	5,029	5,087
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	19,893	17,639
Capitalized software development costs
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 66,051	$ 48,502