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Note 5 - Other Investments - Schedule of Other Investments (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2024
Investment in unconsolidated affiliates | $ 21,133,986 |  | $ 21,057,222
Cash investment | 17,738 | $ (0) | 18,258
Change in accrued capital calls | 6,629 | 0 |
Equity in earnings of unconsolidated affiliate | 854,213 | 1,467,835 |
Distribution from unconsolidated affiliate | (801,816) | 0 |
Change in investment in unconsolidated affiliates | 76,764 | $ 1,467,835 |
MVP [Member] |  |  |
Investment in unconsolidated affiliates | 21,000,744 |  | 20,948,347
Southgate [Member] |  |  |
Investment in unconsolidated affiliates | $ 133,242 |  | $ 108,875

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