Nature of the Business and Basis of Presentation - Additional Information (Detail) $ / shares in Units, $ in Thousands, SFr in Millions				3 Months Ended				6 Months Ended
	Jul. 01, 2025 USD ($)	Jan. 15, 2025 USD ($)	Aug. 05, 2024 USD ($)	Jun. 30, 2024 USD ($) $ / shares	Mar. 31, 2024 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Jun. 30, 2024 USD ($) $ / shares shares	Jun. 30, 2023 USD ($)	Dec. 31, 2025	Jun. 30, 2024 CHF (SFr)	Dec. 31, 2023 USD ($)
Nature Of Business And Basis Of Presentation [Line Items]
Entity incorporated month and year								2010-10
Entity incorporation, state or country code								DE
Payments to acquire business								$ 15,000
Stock Issued During Period, Shares, New Issues | shares								14,285,715
Business combination, percentage of all rent and other cost due										80.10%
Share Price | $ / shares				$ 1.05				$ 1.05
Milestone Prepayment			$ 60,000
Payment in cash for first sales milestone			150,000
Future milestone payment			125,000
Closing period milestone payment one			400,000
Closing period milestone payment two			150,000
Closing period milestone payment three			750,000
Accumulated deficit				$ (1,051,238)				$ (1,051,238)				$ (978,235)
Cash and cash equivalents				71,232				71,232				$ 127,965
Net operating cash outflows								(75,047)	$ (10,600)
Net Income (Loss)				$ (32,870)	$ (40,133)	$ 46,552	$ (71,174)	(73,003)	$ (24,622)
Forecast [Member] | Transition Services Agreement [Member]
Nature Of Business And Basis Of Presentation [Line Items]
Payment for material compliance	$ 25,000	$ 50,000
Nestle Health Science [Member]
Nature Of Business And Basis Of Presentation [Line Items]
Payments to acquire business			100,000
Satisfaction fee paid | SFr											SFr 2,398
Business acquisition reimbursement cost								$ 4,700
Adjusted account settlement amount			$ 17,900,000
Fixed interest rate			10.00%
Derivative fixed interest rate thereafter			5.00%