CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenue	$ 212,167	$ 138,055
Cost of revenue	47,051	32,084
Gross profit	165,116	105,971
Operating expenses:
Sales and marketing	100,057	69,974
Research and development	67,054	39,527
General and administrative	38,029	27,724
Total operating expenses	205,140	137,225
Loss from operations	(40,024)	(31,254)
Non-operating income (expense):
Interest income	1,061	544
Interest expense	(1,557)	(10,234)
Other income (expense), net	(487)	148
Total non-operating income (expense), net	(983)	(9,542)
Loss before income taxes	(41,007)	(40,796)
Provision for (benefit from) income taxes	374	(833)
Net loss	$ (41,381)	$ (39,963)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.13)	$ (0.13)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.13)	$ (0.13)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	323,334	305,947
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	323,334	305,947