CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue		$ 416,861	$ 346,974	$ 1,212,396	$ 963,238
Cost of revenue	[1]	79,462	70,226	237,930	197,863
Gross profit		337,399	276,748	974,466	765,375
Operating expenses:
Research and development	[1]	105,203	92,112	323,819	248,721
Sales and marketing	[1]	211,593	172,828	622,413	495,596
General and administrative	[1]	76,030	50,716	236,778	139,667
Total operating expenses	[1]	392,826	315,656	1,183,010	883,984
Operating loss		(55,427)	(38,908)	(208,544)	(118,609)
Other income (expense), net:
Interest expense		(3,131)	(14,762)	(9,373)	(43,768)
Interest and other income (expense), net		2,913	2,386	5,845	8,430
Total other income (expense), net		(218)	(12,376)	(3,528)	(35,338)
Loss before provision for income taxes		(55,645)	(51,284)	(212,072)	(153,947)
Provision for income taxes		3,448	3,133	9,049	7,842
Net loss		$ (59,093)	$ (54,417)	$ (221,121)	$ (161,789)
Net loss per share, basic (in usd per share)		$ (0.48)	$ (0.45)	$ (1.80)	$ (1.36)
Net loss per share, diluted (in usd per share)		$ (0.48)	$ (0.45)	$ (1.80)	$ (1.36)
Weighted-average shares used to compute net loss per share, basic (in shares)		123,576	120,164	122,799	119,050
Weighted-average shares used to compute net loss per share, diluted (in shares)		123,576	120,164	122,799	119,050

[1] Includes share-based compensation expense as follows:    Three Months Ended
September 30,Nine Months Ended
September 30,2022202120222021Cost of revenue$7,053 $5,343 $20,212 $15,047 Research and development22,885 17,189 62,654 49,886 Sales and marketing35,014 24,915 92,934 72,648 General and administrative15,007 12,086 41,456 31,020