Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020		194,474,000
Beginning balance at Dec. 31, 2020		$ 1,010,968
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of convertible preferred stock to common stock (in shares)		(194,474,000)
Conversion of convertible preferred stock to common stock		$ (1,010,968)
Ending balance (in shares) at Sep. 30, 2021		0
Ending balance at Sep. 30, 2021		$ 0
Beginning balance (in shares) at Dec. 31, 2020			15,570,000
Beginning balance at Dec. 31, 2020	$ (292,528)		$ 2	$ 41,357	$ 256	$ (334,143)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from initial public offering, net of $33,198 in issuance costs (in shares)			25,000,000
Proceeds from initial public offering, net of $33,198 in issuance costs	391,802		$ 2	391,800
Conversion of convertible preferred stock to common stock (in shares)			194,474,000
Conversion of convertible preferred stock to common stock	1,010,968		$ 20	1,010,948
Issuance of common stock upon exercise of stock options (in shares)			776,000
Issuance of common stock upon exercise of stock options	2,043			2,043
Stock-based compensation (in shares)			3,969,000
Stock-based compensation	41,023			41,023
Other comprehensive loss	(321)				(321)
Net loss	(166,513)					(166,513)
Ending balance (in shares) at Sep. 30, 2021			239,789,000
Ending balance at Sep. 30, 2021	986,474		$ 24	1,487,171	(65)	(500,656)
Beginning balance (in shares) at Jun. 30, 2021		0
Beginning balance at Jun. 30, 2021		$ 0
Ending balance (in shares) at Sep. 30, 2021		0
Ending balance at Sep. 30, 2021		$ 0
Beginning balance (in shares) at Jun. 30, 2021			238,549,000
Beginning balance at Jun. 30, 2021	1,021,955		$ 24	1,473,639	73	(451,781)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from initial public offering, net of $33,198 in issuance costs	(39)			(39)
Issuance of common stock upon exercise of stock options (in shares)			265,000
Issuance of common stock upon exercise of stock options	529			529
Stock-based compensation (in shares)			975,000
Stock-based compensation	13,042			13,042
Other comprehensive loss	(138)				(138)
Net loss	(48,875)					(48,875)
Ending balance (in shares) at Sep. 30, 2021			239,789,000
Ending balance at Sep. 30, 2021	$ 986,474		$ 24	1,487,171	(65)	(500,656)
Beginning balance (in shares) at Dec. 31, 2021	0
Ending balance (in shares) at Sep. 30, 2022	0
Beginning balance (in shares) at Dec. 31, 2021	242,738,350		242,738,000
Beginning balance at Dec. 31, 2021	$ 929,787		$ 24	1,515,748	(1,623)	(584,362)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)	3,512,765		3,513,000
Issuance of common stock upon exercise of stock options	$ 9,252		$ 1	9,251
Stock-based compensation (in shares)			2,600,000
Stock-based compensation	63,561			63,561
Issuance of common stock under employee stock purchase plan (in shares)			284,000
Issuance of common stock under employee stock purchase plan	887			887
Issuance of common stock in connection with restricted stock units, net of tax (in shares)			105,000
Issuance of common stock in connection with restricted stock units, net of tax	(367)			(367)
Other comprehensive loss	(8,373)				(8,373)
Net loss	$ (174,721)					(174,721)
Ending balance (in shares) at Sep. 30, 2022	249,239,833		249,240,000
Ending balance at Sep. 30, 2022	$ 820,026		$ 25	1,589,080	(9,996)	(759,083)
Ending balance (in shares) at Sep. 30, 2022	0
Beginning balance (in shares) at Jun. 30, 2022			247,110,000
Beginning balance at Jun. 30, 2022	$ 868,042		$ 25	1,565,197	(8,351)	(688,829)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			1,375,000
Issuance of common stock upon exercise of stock options	5,127			5,127
Stock-based compensation (in shares)			650,000
Stock-based compensation	19,123			19,123
Issuance of common stock in connection with restricted stock units, net of tax (in shares)			105,000
Issuance of common stock in connection with restricted stock units, net of tax	(367)			(367)
Other comprehensive loss	(1,645)				(1,645)
Net loss	$ (70,254)					(70,254)
Ending balance (in shares) at Sep. 30, 2022	249,239,833		249,240,000
Ending balance at Sep. 30, 2022	$ 820,026		$ 25	$ 1,589,080	$ (9,996)	$ (759,083)