Revenue and Deferred Revenue - Summary of Disaggregated Revenue by Sales Channel (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation Of Revenue [Line Items]
Revenue	$ 120,163	$ 109,392	$ 237,149	$ 211,690
Self-serve Revenue
Disaggregation Of Revenue [Line Items]
Revenue	76,055	75,462	151,858	146,574
Sales-assisted revenue
Disaggregation Of Revenue [Line Items]
Revenue	$ 44,108	$ 33,930	$ 85,291	$ 65,116

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details