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Note 8 - Investments, Including Investments Accounted for Using the Equity Method (Tables) | 3 Months Ended
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Mar. 31, 2025
Notes Tables |
Investment [Table Text Block] |
|  | March 31, |  |  | December 31, |
|  | 2025 |  |  | 2024 |
U.S. Treasury notes held to maturity |  | $ | 23,177,629 |  |  | $ | 22,411,583 |
Common stock warrants of Sky Harbour Group Corporation |  |  | 23,776,919 |  |  |  | 22,541,754 |
Total |  | $ | 46,954,548 |  |  | $ | 44,953,337 |
|  | March 31, |  |  | December 31, |
|  | 2025 |  |  | 2024 |
U.S. Treasury securities held to maturity |  | $ | 4,744,262 |  |  | $ | 4,736,409 |
Investments in special purpose entities |  |  | 42,222,449 |  |  |  | 46,936,743 |
Preferred stock |  |  | 348,694 |  |  |  | 348,694 |
Voting preferred stock of MyBundle TV Inc. |  |  | 3,000,000 |  |  |  | 3,000,000 |
Voting common stock of CB&T Holding Corporation |  |  | 19,058,485 |  |  |  | 19,058,485 |
Total |  | $ | 69,373,890 |  |  | $ | 74,080,331 |
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] |
|  |  |  |  |  | Gross |  |  |  |  |
|  |  |  |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gain (Loss) |  |  | Value |
Marketable equity securities, March 31, 2025 |  | $ | 2,455,024 |  |  | $ | 220,956 |  |  | $ | 2,675,980 |
Marketable equity securities, December 31, 2024 |  | $ | 2,455,024 |  |  | $ | (61,764 | ) |  | $ | 2,393,260 |
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] |
|  |  |  |  |  | Gross |  |  |  |  |
|  |  |  |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gain (Loss) |  |  | Value |
U.S. Treasury trading securities, March 31, 2025 |  | $ | 19,213,285 |  |  | $ | 41,513 |  |  | $ | 19,254,798 |
U.S. Treasury trading securities, December 31, 2024 |  | $ | 10,949,883 |  |  | $ | 27,086 |  |  | $ | 10,976,969 |
Investments in and Advances to Affiliates [Table Text Block] |
|  | March 31, |  |  | December 31, |
|  | 2025 |  |  | 2024 |
Beginning of year |  | $ | 72,435,867 |  |  | $ | 94,244,788 |
Additional investments in unconsolidated affiliates |  |  | - |  |  |  | 21,000 |
Transfer of interest |  |  | - |  |  |  | - |
Sale of interest |  |  | (1,274,014 | ) |  |  | (2,748,292 | )
Distributions received |  |  | - |  |  |  | (1,798,348 | )
Reclassification to consolidated subsidiaries |  |  | - |  |  |  | - |
Equity in loss of unconsolidated affiliates |  |  | (2,314,405 | ) |  |  | (17,283,281 | )
End of period |  | $ | 68,847,448 |  |  | $ | 72,435,867 |
Equity Method Investments [Table Text Block] |
|  | For the Three Months Ended |
|  | March 31, |
|  | 2025 |  |  | 2024 |
Revenue |  | $ | 6,408,225 |  |  | $ | 3,595,392 |
Gross profit |  |  | 5,672,573 |  |  |  | 2,644,749 |
Net loss from operations |  |  | (6,947,708 | ) |  |  | (5,048,707 | )
Net loss |  | $ | (8,872,455 | ) |  | $ | (20,990,578 | )

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 + Details
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- Definition Tabular disclosure of investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/320/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Topic 321 -Publisher FASB -URI https://asc.fasb.org/321/tableOfContent Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Topic 325 -Publisher FASB -URI https://asc.fasb.org/325/tableOfContent + Details
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- Definition Tabular disclosure of investments in and advances to affiliates. Does not include the tabular disclosure of the disaggregation of investments in and advances to affiliates across legal entities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 + Details
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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B + Details
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