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Commitments and Contingencies - Additional Information (Detail)				1 Months Ended		9 Months Ended
	Aug. 21, 2023 USD ($)	Jun. 05, 2023 USD ($)	Apr. 18, 2023 USD ($) Agreement	Mar. 31, 2023 USD ($)	Feb. 28, 2023 USD ($)	Sep. 30, 2023 USD ($) shares	Dec. 31, 2022 USD ($)
Commitments And Contingencies Disclosure [Line Items]
Long-term CVR derivative liability						$ 4,664,000
CVR derivative liability							$ 5,000,000
Number of separate agreements | Agreement			2
Non GMP Manufacturing Services
Commitments And Contingencies Disclosure [Line Items]
Cost of services as per agreement			$ 300,000
Clinical Supply Batch GMP Manufacturing
Commitments And Contingencies Disclosure [Line Items]
Cost of services as per agreement			$ 200,000
Contingent Value Rights Agreement
Commitments And Contingencies Disclosure [Line Items]
Percentage of excess cash on dispositions net						100.00%
Percentage of excess cash on dispositions net						$ 1,000,000
Percentage of excess preapproved costs						100.00%
Short-term CVR derivative liability							$ 5,000,000
Long-term CVR derivative liability					$ 4,500,000
CVR derivative liability						$ 0
Distribution to CVR holders from asset sale proceeds	$ 1,500,000	$ 3,500,000		$ 200,000	$ 200,000
Related Party | Non GMP Manufacturing Services | Other Accrued Liabilities
Commitments And Contingencies Disclosure [Line Items]
Future repayment obligation to related party						300,000
GNI | Related Party | Non GMP Manufacturing Services
Commitments And Contingencies Disclosure [Line Items]
Reimbursable development costs						$ 300,000
Vertex Asset Purchase Agreement | Contingent Value Rights Agreement
Commitments And Contingencies Disclosure [Line Items]
Percentage of amount received on agreement, net of expenses						100.00%
F351 | GNI | Business Combination Agreement
Commitments And Contingencies Disclosure [Line Items]
Termination fee required to pay upon termination of agreement						$ 2,000,000.0
F351 | GNI | Maximum | Business Combination Agreement
Commitments And Contingencies Disclosure [Line Items]
Common stock, shares issued | shares						1,110,776,224
Reimbursement for out-of-pocket fees and expenses						$ 2,000,000.0

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