Note 2 - Investments - Components of Net Investment Income (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Investment income	$ 1,948,471	$ 1,818,776
Less investment expenses	(278,514)	(313,166)
Investment income, net	1,669,957	1,505,610
Fixed Maturities [Member]
Investment income	1,309,729	1,039,423
Mortgages [Member]
Investment income	406,549	509,022
Equity Securities [Member]
Investment income	83,165	210,370
Other Invested Assets [Member]
Investment income	60,055	45,940
Cash and Cash Equivalents [Member]
Investment income	$ 88,972	$ 14,021