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Note 8 - Investments, Including Investments Accounted for Using the Equity Method - Available for Sale Securities (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Long-term investments	$ 69,729,025	$ 26,136,636
US Treasury Notes Securities [Member]
U.S. Treasury notes, Cost	69,498,769	33,888,165
U.S. Treasury notes, Gross Unrealized Gain (Loss)	(8,221)	(367,764)
U.S. Treasury notes, Fair Value	69,490,548	33,520,401
US Treasury Securities [Member]
Long-term investments	4,751,068	6,729,457
Special Purpose Entities [Member]
Long-term investments	45,570,778	0
Preferred Stock [Member]
Long-term investments	348,694	348,694
Voting Common Stock of Privately Held Company CB&T Holding Corporation [Member]
Long-term investments	$ 19,058,485	$ 19,058,485

X

- Definition

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
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+ References

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