Related Party Transactions - Additional Information (Detail) - Shin Nippon Biomedical Laboratories Ltd [Member] - USD ($) $ in Millions	3 Months Ended	9 Months Ended	42 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026
Related Party Transaction [Line Items]
Payments related to contract research services.	$ 0.7	$ 0.6	$ 5.5	$ 0.6	$ 8.9
Expenses incurred	$ 0.9	$ 1.5	$ 3.1	$ 3.1

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details