Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Redeemable Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Dec. 31, 2020		$ 462,293
Beginning balance (in shares) at Dec. 31, 2020		75,305,400
Beginning balance at Dec. 31, 2020	$ (221,824)		$ 0	$ 126,408		$ 20	$ (343,551)
Beginning balance (in shares) at Dec. 31, 2020			43,049,228
Treasury Stock, Value, Beginning Balance at Dec. 31, 2020					$ (4,701)
Treasury Stock Shares, Beginning Balance at Dec. 31, 2020					(2,747,938)
Conversion of redeemable convertible preferred stock to common stock upon initial public offering		$ (462,293)
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)		(75,305,400)
Conversion of redeemable convertible preferred stock to common stock upon initial public offering	462,293		$ 1	462,292
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)			75,305,400
Issuance of common stock upon initial public offering, net of offering costs (in shares)			17,024,276
Issuance of common stock upon initial public offering, net of offering costs	518,835			518,835
Issuance of common stock upon exercise of options	26,872			26,872
Issuance of common stock upon exercise of options (in shares)			7,519,696
Vesting of restricted stock units (in shares)			295,650
Tax withholding on vesting of restricted stock units	(4,445)			(4,445)
Tax withholding on vesting of restricted stock units (in shares)			(115,381)
Issuance of restricted stock awards (in shares)			2,115
Vesting of early exercise stock options	63			63
Stock-based compensation expense	71,680			71,680
Change in unrealized loss on marketable securities	(19)					(19)
Net loss	(97,477)						(97,477)
Ending balance at Sep. 30, 2021		$ 0
Ending balance (in shares) at Sep. 30, 2021		0
Ending balance at Sep. 30, 2021	755,978		$ 1	1,201,705		1	(441,028)
Ending balance (in shares) at Sep. 30, 2021			143,080,984
Treasury Stock, Value, Ending Balance at Sep. 30, 2021					$ (4,701)
Treasury Stock Shares, Ending Balance at Sep. 30, 2021					(2,747,938)
Beginning balance at Jun. 30, 2021		$ 0
Beginning balance (in shares) at Jun. 30, 2021		0
Beginning balance at Jun. 30, 2021	755,409		$ 1	1,168,681		5	(408,577)
Beginning balance (in shares) at Jun. 30, 2021			139,884,849
Treasury Stock, Value, Beginning Balance at Jun. 30, 2021					$ (4,701)
Treasury Stock Shares, Beginning Balance at Jun. 30, 2021					(2,747,938)
Issuance of common stock upon exercise of options	12,588			12,588
Issuance of common stock upon exercise of options (in shares)			3,015,866
Vesting of restricted stock units (in shares)			295,650
Tax withholding on vesting of restricted stock units	(4,445)			(4,445)
Tax withholding on vesting of restricted stock units (in shares)			(115,381)
Vesting of early exercise stock options	21			21
Stock-based compensation expense	24,860			24,860
Change in unrealized loss on marketable securities	(4)					(4)
Net loss	(32,451)						(32,451)
Ending balance at Sep. 30, 2021		$ 0
Ending balance (in shares) at Sep. 30, 2021		0
Ending balance at Sep. 30, 2021	755,978		$ 1	1,201,705		1	(441,028)
Ending balance (in shares) at Sep. 30, 2021			143,080,984
Treasury Stock, Value, Ending Balance at Sep. 30, 2021					$ (4,701)
Treasury Stock Shares, Ending Balance at Sep. 30, 2021					(2,747,938)
Beginning balance at Dec. 31, 2021		$ 0
Beginning balance (in shares) at Dec. 31, 2021		0
Beginning balance at Dec. 31, 2021	$ 741,513		$ 1	1,235,231		(252)	(488,766)
Beginning balance (in shares) at Dec. 31, 2021	141,906,041		144,653,979
Treasury Stock, Value, Beginning Balance at Dec. 31, 2021	$ 4,701				$ (4,701)
Treasury Stock Shares, Beginning Balance at Dec. 31, 2021					(2,747,938)
Issuance of common stock upon exercise of options	14,198			14,198
Issuance of common stock upon exercise of options (in shares)			3,509,007
Vesting of restricted stock units (in shares)			1,094,522
Tax withholding on vesting of restricted stock units	(6,798)			(6,798)
Tax withholding on vesting of restricted stock units (in shares)			(410,918)
Stock Issued During Period, Shares, Employee Stock Purchase Plans			353,828
Stock Issued During Period, Value, Employee Stock Purchase Plan	4,596			4,596
Issuance of restricted stock awards (in shares)			5,518
Stock-based compensation expense	80,339			80,339
Change in unrealized loss on marketable securities	(1,227)					(1,227)
Net loss	(123,640)						(123,640)
Ending balance at Sep. 30, 2022		$ 0
Ending balance (in shares) at Sep. 30, 2022		0
Ending balance at Sep. 30, 2022	$ 708,981		$ 1	1,327,566		(1,479)	(612,406)
Ending balance (in shares) at Sep. 30, 2022	146,457,998		149,205,936
Treasury Stock, Value, Ending Balance at Sep. 30, 2022	$ 4,701				$ (4,701)
Treasury Stock Shares, Ending Balance at Sep. 30, 2022					(2,747,938)
Beginning balance at Jun. 30, 2022		$ 0
Beginning balance (in shares) at Jun. 30, 2022		0
Beginning balance at Jun. 30, 2022	715,787		$ 1	1,299,173		(2,318)	(576,368)
Beginning balance (in shares) at Jun. 30, 2022			148,332,771
Treasury Stock, Value, Beginning Balance at Jun. 30, 2022					$ (4,701)
Treasury Stock Shares, Beginning Balance at Jun. 30, 2022					(2,747,938)
Issuance of common stock upon exercise of options	2,713			2,713
Issuance of common stock upon exercise of options (in shares)			635,319
Vesting of restricted stock units (in shares)			372,157
Tax withholding on vesting of restricted stock units	(1,946)			(1,946)
Tax withholding on vesting of restricted stock units (in shares)			(139,829)
Issuance of restricted stock awards (in shares)			5,518
Stock-based compensation expense	27,626			27,626
Change in unrealized loss on marketable securities	839					839
Net loss	(36,038)						(36,038)
Ending balance at Sep. 30, 2022		$ 0
Ending balance (in shares) at Sep. 30, 2022		0
Ending balance at Sep. 30, 2022	$ 708,981		$ 1	$ 1,327,566		$ (1,479)	$ (612,406)
Ending balance (in shares) at Sep. 30, 2022	146,457,998		149,205,936
Treasury Stock, Value, Ending Balance at Sep. 30, 2022	$ 4,701				$ (4,701)
Treasury Stock Shares, Ending Balance at Sep. 30, 2022					(2,747,938)