Note 2 - Investments - Investment Income (Details) - USD ($)	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Investment revenue	$ 6,129,343	$ 4,984,228
Less investment expenses	(950,000)	(950,000)
Net investment income	5,179,343	4,034,228
Fixed Income Securities [Member]
Investment revenue	4,099,739	3,122,028
Real Estate Investment [Member]
Investment revenue	953,532	904,533
Equity Securities [Member]
Investment revenue	838,959	778,707
Other than Securities Investment [Member]
Investment revenue	136,709	154,332
Cash and Cash Equivalents [Member]
Investment revenue	$ 100,404	$ 24,628

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