Note 2 - Investments - Contractual Maturity of Fixed Income Securities (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Due in one year or less, amortized cost	$ 3,548,339
Due in one year or less, fair value	3,498,321
Due after one year through five years, amortized cost	15,222,260
Due after one year through five years, fair value	14,582,221
Due after five years through 10 years, amortized cost	24,129,964
Due after five years through 10 years, fair value	22,440,674
Due after 10 years, amortized cost	26,891,230
Due after 10 years, fair value	22,631,543
Total fixed maturity securities, amortized cost	118,359,809	$ 119,336,041
Total fixed maturity securities, fair value	109,168,285	110,955,697
Collateralized Mortgage-Backed Securities [Member]
Securities without a specific due date, amortized cost	48,381,623
Securities without a specific due date, fair value	45,834,486
Securities without a specific due date, amortized cost	48,381,623
Redeemable Preferred Stock [Member]
Securities without a specific due date, amortized cost	186,393
Securities without a specific due date, fair value	181,040
Securities without a specific due date, amortized cost	186,393
Total fixed maturity securities, amortized cost	186,393	186,393
Total fixed maturity securities, fair value	$ 181,040	$ 170,560