Note 7 - Investments, Including Investments Accounted for Using the Equity Method (Tables)

12 Months Ended

Dec. 31, 2025

Notes Tables

Investment [Table Text Block]

	December 31,
	2025		2024
U.S. Treasury notes held to maturity	$	23,198,150	$	22,411,583
Common stock warrants of Sky Harbour Group Corporation		4,987,749		22,541,754
Total	$	28,185,899	$	44,953,337

	December 31,
	2025		2024
U.S. Treasury securities held to maturity	$	4,768,881	$	4,736,409
Investments in special purpose entities		24,258,348		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	$	51,434,408	$	74,080,331

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

			Gross
			Unrealized			Fair
	Cost		Gain (Loss)			Value
Marketable equity securities, December 31, 2025	$	1,074,439	$	(206,396	)	$	868,043
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, December 31, 2025	$	20,611,818	$	58,214	$	20,670,032
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]

	December 31,
	2025			2024
Beginning of year	$	72,435,867		$	94,244,788
Additional investments in unconsolidated affiliates		-			21,000
Distributions received		(60,000	)		-
Transfer of interest		-			(2,748,292	)
Sale of interest		(4,103,648	)		(1,798,348	)
Equity in income (loss) of unconsolidated affiliates		6,544,671			(17,283,281	)
End of year	$	74,816,890		$	72,435,867

Equity Method Investments [Table Text Block]

	December 31,
	2025			2024
Revenue	$	33,446,127		$	19,281,724
Gross profit		29,102,275			16,006,913
Loss from continuing operations		(27,768,566	)		(20,534,728	)
Net income (loss)	$	7,766,110		$	(53,800,324	)