Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Revenue	$ 284,347	$ 228,536	$ 553,775	$ 442,062
Cost of revenue	48,101	42,304	93,824	82,506
Gross profit	236,246	186,232	459,951	359,556
Operating expenses
Sales and marketing	127,922	125,362	248,916	242,725
Research and development	72,308	73,216	142,907	153,252
General and administrative	50,792	46,383	101,810	91,571
Total operating expenses	251,022	244,961	493,633	487,548
Loss from operations	(14,776)	(58,729)	(33,682)	(127,992)
Interest income	5,814	4,943	11,752	9,891
Interest expense	(472)	(491)	(951)	(987)
Accretion income, net	3,761	2,031	6,849	3,663
Other expense, net	(148)	(313)	(492)	(523)
Loss before provision for income taxes	(5,821)	(52,559)	(16,524)	(115,948)
Provision for income taxes	490	322	753	380
Net loss	$ (6,311)	$ (52,881)	$ (17,277)	$ (116,328)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.04)	$ (0.37)	$ (0.12)	$ (0.83)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.04)	$ (0.37)	$ (0.12)	$ (0.83)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	146,938,942	141,238,489	146,207,469	140,446,873
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	146,938,942	141,238,489	146,207,469	140,446,873
Other comprehensive (loss) income
Foreign currency translation adjustment, net of tax	$ (87)	$ 395	$ (573)	$ 379
Unrealized loss on available-for-sale debt and marketable securities, net of tax	(172)	(388)	(379)	(64)
Total other comprehensive (loss) income	(259)	7	(952)	315
Comprehensive loss	$ (6,570)	$ (52,874)	$ (18,229)	$ (116,013)