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Note 8 - Investments, Including Investments Accounted for Using the Equity Method (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

Investment [Table Text Block]

		December 31,
		2024				2023
U.S. Treasury notes held to maturity		$	22,411,583			$	19,195,228
Common stock warrants of Sky Harbour Group Corporation			22,541,754				5,558,241
Total		$	44,953,337			$	24,753,469

Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]

						Gross
						Unrealized				Fair
		Cost				Gain (Loss)				Value
Marketable equity securities, December 31, 2024		$	2,455,024			$	(61,764	)		$	2,393,260
Marketable equity securities, December 31, 2023		$	2,279,723			$	(69,686	)		$	2,210,037

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

						Gross
						Unrealized				Fair
		Cost				Gain (Loss)				Value
U.S. Treasury trading securities, December 31, 2024		$	10,949,883			$	27,086			$	10,976,969
U.S. Treasury trading securities, December 31, 2023		$	47,162,564			$	(49,905	)		$	47,112,659

		December 31,
		2024				2023
U.S. Treasury securities held to maturity		$	4,736,409			$	-
Investments in special purpose entities			46,936,743				64,697,093
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		$	74,080,331			$	87,104,272

Investments in and Advances to Affiliates [Table Text Block]

		December 31,
		2024				2023
Beginning of year		$	94,244,788			$	118,218,389
Additional investments in unconsolidated affiliates			21,000				19,500
Distributions received			-				(271,355	)
Transfer of interest			(2,748,292	)			-
Sale of interest			(1,798,348	)			-
Reclassification to consolidated subsidiaries			-				(15,832,981	)
Equity in loss of unconsolidated affiliates			(17,283,281	)			(7,888,765	)
End of year		$	72,435,867			$	94,244,788

Equity Method Investments [Table Text Block]

		December 31,
		2024				2023
Revenue		$	19,281,724			$	14,925,054
Gross profit			16,006,913				11,232,952
Loss from continuing operations			(20,534,728	)			(17,414,314	)
Net loss		$	(53,800,324	)		$	(22,349,383	)

X

- 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
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+ 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
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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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)
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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)
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