Transition Period Comparative Data - Schedule of Transition Period Comparative Data (Detail) - USD ($) |
8 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Apr. 30, 2025 |
Apr. 30, 2024 |
|
| Transition Period Comparative Data [Abstract] | ||||
| Product revenue, net | $ 49,078,000 | |||
| Total operating expenses | 161,115,000 | $ 117,030,000 | $ 187,995,000 | $ 140,445,000 |
| Operating loss | (112,037,000) | (117,030,000) | (187,995,000) | (140,445,000) |
| Total other income | 1,480,000 | 6,576,000 | 7,943,000 | 13,801,000 |
| Loss before income tax (benefit) expense | (110,557,000) | (110,454,000) | (180,052,000) | (126,644,000) |
| Income tax (benefit) expense | (1,033,000) | 3,392,000 | 0 | |
| Net loss | $ (109,524,000) | $ (110,454,000) | $ (183,444,000) | $ (126,644,000) |
| Weighted average shares outstanding, basic | 53,870,007 | 47,958,970 | 49,652,878 | 36,786,575 |
| Weighted average shares outstanding, diluted | 53,870,007 | 47,958,970 | 49,652,878 | 36,786,575 |
| Net loss per share, basic | $ (2.03) | $ (2.3) | $ (3.69) | $ (3.44) |
| Net loss per share, diluted | $ (2.03) | $ (2.3) | $ (3.69) | $ (3.44) |
| X | ||||||||||
- Definition Transition period comparative data. No definition available.
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|