Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenue	$ 574,885	$ 485,230
Costs and expenses:
Cost of revenue	146,070	133,470
Research and development	195,548	171,728
Sales and marketing	173,953	130,322
General and administrative	62,979	72,618
Total costs and expenses	578,550	508,138
Loss from operations	(3,665)	(22,908)
Interest income	1,088	1,492
Interest expense and other income (expense), net	(1,576)	(1,563)
Loss before provision for (benefit from) income taxes	(4,153)	(22,979)
Provision for (benefit from) income taxes	1,128	(1,305)
Net loss	$ (5,281)	$ (21,674)
Net loss per share, basic (in dollars per share)	$ (0.01)	$ (0.03)
Net loss per share, diluted (in dollars per share)	$ (0.01)	$ (0.03)
Weighted-average shares used in computing net loss per share, basic (in shares)	656,899	628,593
Weighted-average shares used in computing net loss per share, diluted (in shares)	656,899	628,593