Note 2 - Investments - Investment Income (Details) - USD ($)	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Investment revenue	$ 4,984,228	$ 4,384,408
Less investment expenses	(950,000)	(970,000)
Net investment income	4,034,228	3,414,408
Fixed Income Securities [Member]
Investment revenue	3,122,028	3,010,433
Real Estate Investment [Member]
Investment revenue	904,533	802,071
Equity Securities [Member]
Investment revenue	778,707	488,562
Other than Securities Investment [Member]
Investment revenue	154,332	80,761
Cash and Cash Equivalents [Member]
Investment revenue	$ 24,628	$ 2,582

Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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