Revenue and Deferred Revenue - Summary of Disaggregated Revenue by Sales Channel (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Revenue	$ 109,392	$ 90,941	$ 211,690	$ 179,206
Self-serve Revenue
Disaggregation Of Revenue [Line Items]
Revenue	75,462	65,398	146,574	128,505
Enterprise Revenue
Disaggregation Of Revenue [Line Items]
Revenue	$ 33,930	$ 25,543	$ 65,116	$ 50,701