Commitments and Contingencies - Additional Information (Detail) - USD ($) |
8 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Apr. 30, 2025 |
Apr. 30, 2024 |
|
| Other Commitments [Line Items] | |||
| Contractual obligations remaining clinical commitment including cancellation provisions | $ 13,300,000 | ||
| Amounts associated with indemnifications | 0 | ||
| Indemnification Guarantee [Member] | |||
| Other Commitments [Line Items] | |||
| Contingent liabilities | $ 0 | $ 0 | $ 0 |