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v3.25.2

Note 2 - Investments (Details Textual) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2025 | Jul. 31, 2024 | Apr. 30, 2025
Equity Securities, FV-NI, Cost | $ 15,411,000 |  | $ 15,513,000
Equity securities | 22,126,000 |  | 20,879,000
Proceeds from Sale of Equity Securities, FV-NI | 215,000 | $ 90,000 |
Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent | 15,000 | 177,000 |
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax | 3,000 | 47,000 |
Equity Securities, FV-NI, Gain (Loss) | (5,000) | 0 |
Equity Method Investments | 61,220,000 |  | 60,807,000
EAM Trust [Member] |  |  |
Fair Value of Contributed Capital at Inception | 55,805,000 |  | 55,805,000
Cash and Liquid Securities in Excess of Working Capital Requirements Contributed to Capital Account | 5,820,000 |  | 5,820,000
Equity Method Investment, Other-than-Temporary Impairment | $ 0 | 0 |
Percentage of Non Voting Profit Interest | 50.00% |  |
Accrued Non Voting Revenues and Non Voting Profits Interests Payable | $ 5,057,000 |  | 4,493,000
Fixed Income Securities [Member] |  |  |
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale | 2,147,000 | $ 16,357,000 |
AOCI, Debt Securities, Available-for-Sale, Adjustment, after Tax | 65,000 |  | 83,000
Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent | (18,000) |  | (237,000)
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax | $ 3,000 |  | $ (50,000)
Debt Securities, Available-for-Sale, Weighted Average Yield | 4.20% |  | 4.30%
Fixed Income Securities [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] |  |  |
AOCI Tax, Attributable to Parent | $ 14,000 |  | $ 17,000

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