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

12 Months Ended

Dec. 31, 2022

Notes Tables

Investment [Table Text Block]

		December 31,
		2022				2021
Certificates of deposit		$	-			$	310,276
U.S. Treasury securities held to maturity			4,757,224				4,418,719
Common stock warrants of Sky Harbour Group Corporation			1,531,604				-
Total		$	6,288,828			$	4,728,995

		December 31,
		2022				2021
U.S. Treasury securities held to maturity		$	6,729,457			$	154,265
Preferred stock			348,694				104,019
Voting common stock of CB&T Holding Corporation			19,058,485				19,058,485
Total		$	26,136,636			$	19,316,769

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

						Gross
						Unrealized				Fair
		Cost				Gain (Loss)				Value
Marketable equity securities, December 31, 2022		$	9,665,100			$	(896,162	)		$	8,768,938
Marketable equity securities, December 31, 2021		$	20,893,647			$	49,723,850			$	70,617,497

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

						Gross
						Unrealized				Fair
		Cost				Gain (Loss)				Value
U.S. Treasury trading securities, December 31, 2022		$	33,888,165			$	(367,764	)		$	33,520,401
U.S. Treasury trading securities, December 31, 2021		$	87,541,764			$	3,140			$	87,544,904

Investments in and Advances to Affiliates [Table Text Block]

		December 31,
		2022				2021
Beginning of year		$	61,660,905			$	20,913,896
Additional investments in unconsolidated affiliates			45,094,500				55,000,000
Distributions received			(642,511	)			(2,251,766	)
Reclassification of marketable securities to investment in affiliate			23,483				-
Reclassification of investment in affiliate to marketable securities			-				(12,880,146	)
Transfer of interest			(625,498	)			-
Gain on retained interest of deconsolidated affiliate			10,010,090				-
Equity in (loss) income of unconsolidated affiliates			(1,387,620	)			878,921
End of year		$	114,133,349			$	61,660,905

Equity Method Investments [Table Text Block]

		December 31,
		2022				2021
Revenue		$	24,672,878			$	31,071,188
Gross profit			12,148,774				9,562,278
Income from continuing operations			(18,539,589	)			(10,049,214	)
Net income			(7,922,455	)			(11,382,572	)

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-URI https://asc.fasb.org/topic&trid=2197064

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-URI https://asc.fasb.org/topic&trid=75115024

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI https://asc.fasb.org/topic&trid=2196928

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-Name Accounting Standards Codification
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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14)
-URI https://asc.fasb.org/extlink&oid=122147990&loc=d3e611322-123010

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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).

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