Organization and Summary of Significant Accounting Policies - Schedule of Computation of Basic and Diluted Net Loss per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator:
Net loss attributable to common stockholders	$ (24,940)	$ (22,534)	$ (74,546)	$ (61,290)
Denominator:
Weighted-average common shares outstanding	111,093,799	100,028,828	108,445,522	92,664,250
Less: Weighted-average shares subject to repurchase	(183,095)	(183,095)	(183,095)	(183,095)
Denominator for basic net loss per share	110,910,704	99,845,733	108,262,427	92,481,155
Denominator for diluted net loss per share	110,910,704	99,845,733	108,262,427	92,481,155
Net loss per share:
Basic	$ (0.22)	$ (0.23)	$ (0.69)	$ (0.66)
Diluted	$ (0.22)	$ (0.23)	$ (0.69)	$ (0.66)