Note 9 - Stock-based Compensation - Summary of Liability-classified Performance Awards (Details) - Liability-classified Performance Award [Member] $ in Thousands |
Apr. 30, 2025
USD ($)
|
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|---|---|---|---|---|---|---|
| Estimated liability (1) | $ 4,275 | [1] | ||||
| Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 4,632 | [2] | ||||
| ||||||
| X | ||||||||||
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|