Revenue Recognition - Summary of Revenues Disaggregated by Geography (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Revenue	$ 71,256	$ 52,547	$ 195,533	$ 143,771
United States
Disaggregation Of Revenue [Line Items]
Revenue	52,127	41,827	150,093	112,483
International
Disaggregation Of Revenue [Line Items]
Revenue	$ 19,129	$ 10,720	$ 45,440	$ 31,288

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