Note 8 - Equity Investments - Equity Securities Without Readily Determined Fair Value (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2025 |
Apr. 30, 2026 |
Apr. 30, 2025 |
|
| Balance | $ 1,104 | $ 1,161 | $ 1,171 | $ 964 |
| Adjustment for observable transactions involving a similar investment from the same issuer | 8 | 10 | (559) | 207 |
| Upward adjustment | 0 | 0 | 0 | 0 |
| Purchase | 150 | 0 | 650 | 0 |
| Redemptions | 0 | 0 | 0 | 0 |
| Impairments | 0 | 0 | 0 | 0 |
| Balance | $ 1,262 | $ 1,171 | $ 1,262 | $ 1,171 |
| X | ||||||||||
- Definition The amount of adjustments for the observable transactions involving similar investments from the same issuer in equity security without readily determinable fair value. No definition available.
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| X | ||||||||||
- Definition Amount of redemption value for mandatory release assessments on investment in equity security without readily determinable fair value. No definition available.
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| X | ||||||||||
- Definition Amount of redemption value on investment in equity security without readily determinable fair value. No definition available.
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| X | ||||||||||
- Definition Amount of investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of impairment loss on investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of gain from upward price adjustment on investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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