Commitments and Contingencies - Additional Information (Detail) ft² in Thousands	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Dec. 20, 2021 ft²
Other Commitments [Line Items]
Contingent liabilities	$ 0	$ 0
Drug Manufacturing Facility | Wisconsin
Other Commitments [Line Items]
Planned area of the site (in sq ft) | ft²			160
Laboratory and Office Facility | Wisconsin
Other Commitments [Line Items]
Planned area of the site (in sq ft) | ft²			140
Facilities
Other Commitments [Line Items]
Capital expenditures incurred	224,700,000
Facilities | Minimum
Other Commitments [Line Items]
Amount intends to invest for buildout of the facilities	60,000,000
Facilities | Maximum
Other Commitments [Line Items]
Amount intends to invest for buildout of the facilities	$ 73,000,000