Description of Business - Additional Information (Detail) - USD ($) $ 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	Dec. 31, 2023
Description Of Business [Line Items]
Net Income (Loss)	$ (34,454)	$ (39,944)	$ (44,046)	$ (43,971)	$ (74,398)	$ (88,017)
Accumulated deficit	(1,036,145)				(1,036,145)		$ (961,747)
Restricted cash	3,329				3,329		$ 3,329
Cash, cash equivalents, restricted cash and short-term investments	$ 198,200				$ 198,200