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Note 8 - Investments, Including Investments Accounted for Using the Equity Method - Available for Sale Securities (Details) - USD ($) | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Long-term investments | $ 85,260,777 | $ 87,104,272
US Treasury Notes Securities [Member] |  |
U.S. Treasury notes, Cost | 13,753,341 | 47,162,564
U.S. Treasury notes, Gross Unrealized Gain (Loss) | 45,625 | (49,905)
U.S. Treasury notes, Fair Value | 13,798,966 | 47,112,659
Special Purpose Entities [Member] |  |
Long-term investments | 62,853,598 | 64,697,093
Preferred Stock [Member] |  |
Long-term investments | 348,694 | 348,694
My Bundle TV Inc. [Member] |  |
Long-term investments | 3,000,000 | 3,000,000
Voting Common Stock of Privately Held Company CB&T Holding Corporation [Member] |  |
Long-term investments | $ 19,058,485 | $ 19,058,485

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