Note 2 - Investments - Income From Securities Transactions (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Jul. 31, 2025 |
Jul. 31, 2024 |
|
| Dividend income | $ 161 | $ 147 |
| Interest income | 514 | 545 |
| Investment gains/(losses) recognized on sales of equity securities during the period | 2 | 0 |
| Unrealized gains/(losses) recognized on equity securities held at the end of the period | 1,342 | 950 |
| Other | 0 | 67 |
| Total investment gains/(losses) | $ 2,019 | $ 1,709 |
| X | ||||||||||
- Definition Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of dividend income on nonoperating securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition This item represents investment income (expense) derived from investments in debt and equity securities unless specified in taxonomy. No definition available.
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