Net Loss per Share - Schedule of Potential Dilutive Common Share Equivalents (Detail) - shares |
8 Months Ended | 12 Months Ended | |
|---|---|---|---|
Dec. 31, 2025 |
Apr. 30, 2025 |
Apr. 30, 2024 |
|
| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] | |||
| Number of anti-dilutive potential common share equivalents outstanding | 15,393,629 | 7,311,578 | 5,661,896 |
| Common Stock Issuable Under Equity Incentive Plans | |||
| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] | |||
| Number of anti-dilutive potential common share equivalents outstanding | 6,841,669 | 7,311,578 | 5,661,896 |
| Common Stock Issuable Upon Conversion of Notes | |||
| Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] | |||
| Number of anti-dilutive potential common share equivalents outstanding | 8,551,960 | ||