Net Loss Per Share - Computation of Basic and Diluted Net Loss per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share [Abstract]
Net loss, basic and diluted	$ (24,990)	$ (34,325)	$ (21,590)	$ (29,561)	$ (59,315)	$ (51,151)
Weighted average shares used to compute basic net loss per share	35,317,766		34,808,389		35,196,488	34,721,551
Weighted average shares used to compute diluted net loss per share	35,317,766		34,808,389		35,196,488	34,721,551
Net loss per share, basic	$ (0.71)		$ (0.62)		$ (1.69)	$ (1.47)
Net loss per share, diluted	$ (0.71)		$ (0.62)		$ (1.69)	$ (1.47)