Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | |||
|---|---|---|---|---|
Jul. 31, 2025 |
Jul. 31, 2024 |
Jan. 31, 2025 |
Nov. 30, 2024 |
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| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||||
| Fair value of the derivative liability | $ 4.4 | $ 4.4 | ||
| Incremental fair value of the derivative liability | 2.0 | |||
| Other income from change in fair value of derivative liability | 1.1 | $ 1.1 | ||
| Fair value of derivative liability | 9.4 | |||
| DRI Healthcare Trust [Member] | ||||
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||||
| Royalty agreement amount funded | $ 100.0 | |||
| Additional [Member] | DRI Healthcare Trust [Member] | ||||
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||||
| Royalty agreement amount funded | $ 22.0 | |||
| X | ||||||||||
- Definition Expense from change in fair value of derivative liability. No definition available.
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| X | ||||||||||
- Definition Incremental derivative liability, fair value of collateral. No definition available.
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- Definition Royalty agreement amount funded. No definition available.
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| X | ||||||||||
- Definition Fair value of securities pledged as collateral against derivative liabilities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition 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. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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