Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Net revenue	$ 517,175	$ 290,292	$ 143,267
Platform services revenue, net
Disaggregation of Revenue [Line Items]
Net revenue	502,296	283,305	138,106
Other services revenue
Disaggregation of Revenue [Line Items]
Net revenue	$ 14,879	$ 6,987	$ 5,161