Note 2 - Investments - Summary of Proceeds from Investments and Related Gross Realized Gains and Losses (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fixed Income Securities [Member]
Fixed maturity securities, proceeds	$ 1,443,108	$ 1,185,955	$ 9,785,891	$ 13,800,029
Fixed maturity securities, realized gains	0	0	0	105,918
Fixed maturity securities, realized losses	(6,863)	0	(58,761)	(106,546)
Fixed maturity securities, net realized gains (losses)	6,863	0	58,761	(628)
Common Stock [Member]
Equity securities, proceeds	1,807,080	600,120	3,831,416	3,976,938
Equity securities, realized gains	395,780	112,306	800,571	1,052,648
Equity securities, realized losses	(188,989)	(59,628)	(496,207)	(254,260)
Equity securities, net realized gains (losses)	206,791	52,678	304,364	798,388
Preferred Stock [Member]
Equity securities, proceeds	0	242,844	337,440	646,552
Equity securities, realized gains	0	1,004	29,371	8,749
Equity securities, realized losses	0	(12,476)	(6,599)	(20,909)
Equity securities, net realized gains (losses)	$ (0)	$ (11,472)	$ (22,772)	$ (12,160)