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

3 Months Ended

Mar. 31, 2021

Notes Tables

Investment [Table Text Block]

		March 31,				December 31,
		2021				2020
Certificates of deposit		$	417,625			$	1,035,827
Corporate bonds available for sale			-				1,020,000
U.S. Treasury notes and corporate bond			4,942,094				4,994,848
Total		$	5,359,719			$	7,050,675

		March 31,				December 31,
		2021				2020
U.S. Treasury securities, held to maturity		$	283,126			$	286,015
Preferred stock			104,019				104,019
Voting common stock of CBT Holding Corporation			19,058,485				19,058,485
Total		$	19,445,630			$	19,448,519

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

						Gross
						Unrealized				Fair
		Cost				Gain (Loss)				Value
Marketable equity securities, March 31, 2021		$	43,684,885			$	100,305,854			$	143,990,739
Marketable equity securities, December 31, 2020		$	68,205,548			$	(4,169,066	)		$	64,036,482

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

						Gross
						Unrealized				Fair
		Cost				Gain (Loss)				Value
U.S. Treasury securities, March 31, 2021		$	54,494,536			$	4,724			$	54,499,260
U.S. Treasury securities, December 31, 2020		$	37,766,133			$	1,812			$	37,767,945

Investments in and Advances to Affiliates [Table Text Block]

		March 31,				December 31,
		2021				2020
Beginning of period		$	20,913,896			$	771,805
Additional investment in unconsolidated affiliates			-				16,000,000
Distributions received			(1,598,623	)			(1,433,480	)
Reclassificaton of investment in affiliate to marketable securities			(12,880,147	)			-
Equity in income of unconsolidated affiliates			140,297				5,575,571
End of period		$	6,575,423			$	20,913,896

Equity Method Investments [Table Text Block]

		March 31,
		2021				2020
Revenue		$	9,416,765			$	191,751,459
Gross profit			6,637,948				25,787,988
Income from continuing operations			20,713				7,382,036
Net (loss) income		$	(453,471	)		$	6,517,748

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
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+ References

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

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

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://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 http://asc.fasb.org/extlink&oid=120401592&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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No definition available.

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