Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenue	$ 58,130	$ 39,254	$ 111,195	$ 72,364
Cost of revenue	17,060	12,135	33,123	22,390
Gross profit	41,070	27,119	78,072	49,974
Operating expenses:
Research and development	20,306	8,544	36,807	15,529
Sales and marketing	34,135	20,040	62,265	36,810
General and administrative	11,212	8,282	25,574	13,531
Total operating expenses	65,653	36,866	124,646	65,870
Other income, net	293	32	379	20
Loss before provision for income taxes	(24,290)	(9,715)	(46,195)	(15,876)
Provision for income taxes	278	368	593	646
Net loss	$ (24,568)	$ (10,083)	$ (46,788)	$ (16,522)
Net loss per share attributable to Class A and Class B common stockholders:
Basic and diluted	$ (0.22)	$ (0.34)	$ (0.42)	$ (0.57)
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders:
Basic and diluted	111,036	29,681	110,297	28,808