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, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Net Loss Per Share
Net loss - basic and diluted	$ (20,016)	$ (30,696)	$ (31,479)	$ (26,665)	$ (50,712)	$ (58,144)
Weighted-average common shares outstanding:
Basic	54,724,692		54,002,988		54,656,391	53,937,875
Diluted	54,724,692		54,002,988		54,656,391	53,937,875
Net loss per share:
Basic	$ (0.37)		$ (0.58)		$ (0.93)	$ (1.08)
Diluted	$ (0.37)		$ (0.58)		$ (0.93)	$ (1.08)