Property, Equipment and Software, Net - Schedule of Depreciation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Property Plant And Equipment [Line Items]
Depreciation	$ 2,949	$ 2,317	$ 5,816	$ 4,437
Platform Operations
Property Plant And Equipment [Line Items]
Depreciation	2,573	1,766	4,709	3,344
Technology and Development
Property Plant And Equipment [Line Items]
Depreciation	223	383	818	763
General and Administrative
Property Plant And Equipment [Line Items]
Depreciation	$ 153	$ 168	$ 289	$ 330