Collaboration Profit and Loss - Schedule of Collaboration Profit (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Business Combinations [Abstract]
Share of VOWST net loss	$ 6,638	$ 2,141	$ 13,766	$ 2,141
Profit on transfer of VOWST inventory to Nestle	(9,227)	(1,273)	(13,937)	(1,273)
Collaboration (profit)/loss related to pre-launch activities	0	1,238	0	4,845
Total collaboration (profit) loss sharing - related party	$ (2,589)	$ 2,106	$ (171)	$ 5,713