Revenue Recognition - Summary of Revenues Disaggregated by Geography (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation Of Revenue [Line Items]
Revenue	$ 96,746	$ 71,256	$ 265,605	$ 195,533
United States
Disaggregation Of Revenue [Line Items]
Revenue	66,114	52,127	185,869	150,093
International
Disaggregation Of Revenue [Line Items]
Revenue	$ 30,632	$ 19,129	$ 79,736	$ 45,440

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details