Note 9 - Fair Value Measurements - Schedule of Assets Measured (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2025 |
Apr. 30, 2026 |
Apr. 30, 2025 |
|
| Balance, beginning of period | $ 338 | $ 892 | $ 902 | $ 695 |
| Total gains included in "Other income, net" | 8 | 10 | (556) | 207 |
| Balance, end of period | 346 | 902 | 346 | 902 |
| Change in unrealized gains or losses for the period included in earnings for assets held at the end of the period | $ 0 | $ 0 | $ 0 | $ 0 |
| X | ||||||||||
- Definition Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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