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		$ 407,208	$ 318,216	$ 795,535	$ 616,264
Cost of revenue	[1]	82,790	66,743	158,468	127,637
Gross profit		324,418	251,473	637,067	488,627
Operating expenses:
Research and development	[1]	110,539	82,826	218,616	156,609
Sales and marketing	[1]	209,160	165,250	410,820	322,768
General and administrative	[1]	97,210	45,818	160,748	88,951
Total operating expenses	[1]	416,909	293,894	790,184	568,328
Operating loss		(92,491)	(42,421)	(153,117)	(79,701)
Other income (expense), net:
Interest expense		(3,121)	(14,591)	(6,242)	(29,006)
Interest and other income (expense), net		2,094	960	2,932	6,044
Total other income (expense), net		(1,027)	(13,631)	(3,310)	(22,962)
Loss before provision for income taxes		(93,518)	(56,052)	(156,427)	(102,663)
Provision for income taxes		1,564	2,355	5,601	4,709
Net loss		$ (95,082)	$ (58,407)	$ (162,028)	$ (107,372)
Net loss per share, basic (in usd per share)		$ (0.77)	$ (0.49)	$ (1.32)	$ (0.91)
Net loss per share, diluted (in usd per share)		$ (0.77)	$ (0.49)	$ (1.32)	$ (0.91)
Weighted-average shares used to compute net loss per share, basic (in shares)		122,841	119,050	122,404	118,484
Weighted-average shares used to compute net loss per share, diluted (in shares)		122,841	119,050	122,404	118,484

[1] Includes share-based compensation expense as follows:    Three Months Ended
June 30,Six Months Ended
June 30,2022202120222021Cost of revenue$6,982 $5,218 $13,159 $9,704 Research and development20,482 17,024 39,769 32,697 Sales and marketing31,120 24,501 57,920 47,733 General and administrative14,775 9,951 26,449 18,934