Net Loss Per Share - Summary of Basic and Diluted Net Loss Per Share Attributable to Common Shareholders/Stockholders (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended					9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Net loss	$ (37,795)			$ (19,240)		$ (102,072)	$ (50,816)
Net loss attributable to redeemable convertible noncontrolling interests	0			0		0	(2,109)
Exchange of redeemable noncontrolling interest shares - deemed dividend	0			0		0	(99,994)
Net loss attributable to common stockholders/members	$ (37,795)	$ (36,530)	$ (27,747)	$ (19,240)	$ (14,284)	$ (102,072)	$ (148,701)
Net loss per share, Basic	$ (0.53)			$ (0.33)		$ (1.61)	$ (4.98)
Net loss per share, Diluted	$ (0.53)			$ (0.33)		$ (1.61)	$ (4.98)
Weighted-average number of common shares used in computing net loss per share, basic	71,008,993			57,514,218		63,522,774	29,859,883
Weighted-average number of common shares used in computing net loss per share, Diluted	71,008,993			57,514,218		63,522,774	29,859,883