Intangible Assets, Net - Summary of Amortization Expense on Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 1,906	$ 2,087	$ 3,950	$ 4,154
Platform Operations
Finite Lived Intangible Assets [Line Items]
Amortization expense	534	369	1,065	977
Sales and Marketing
Finite Lived Intangible Assets [Line Items]
Amortization expense	1,370	1,361	2,740	2,741
Technology and Development
Finite Lived Intangible Assets [Line Items]
Amortization expense	0	279	140	279
General and Administrative Expense
Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 2	$ 78	$ 5	$ 157