Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Revenue	$ 213,526	$ 159,516
Cost of revenue	40,202	33,332
Gross profit	173,324	126,184
Operating expenses
Sales and marketing	117,363	93,915
Research and development	80,036	60,254
General and administrative	45,188	43,152
Total operating expenses	242,587	197,321
Loss from operations	(69,263)	(71,137)
Interest income	4,948	74
Interest expense	(496)	(565)
Accretion income, net	1,632	0
Other (expense) income, net	(210)	543
Loss before provision for income taxes	(63,389)	(71,085)
Provision for income taxes	58	334
Net loss	$ (63,447)	$ (71,419)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.45)	$ (0.53)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.45)	$ (0.53)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	139,646,465	134,530,010
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	139,646,465	134,530,010
Other comprehensive income
Foreign currency translation adjustment, net of tax	$ (16)	$ 345
Unrealized gain on available-for-sale debt and marketable securities, net of tax	324	0
Total other comprehensive income	308	345
Comprehensive loss	$ (63,139)	$ (71,074)