Note 2 - Investments - Contractual Maturity of Fixed Income Securities (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Due in one year or less, amortized cost	$ 2,001,003
Due in one year or less, fair value	1,974,481
Due after one year through five years, amortized cost	15,987,197
Due after one year through five years, fair value	15,341,170
Due after five years through 10 years, amortized cost	19,663,932
Due after five years through 10 years, fair value	17,803,642
Due after 10 years, amortized cost	25,844,312
Due after 10 years, fair value	21,805,280
Total fixed maturity securities, amortized cost	106,652,848	$ 104,580,681
Total fixed maturity securities, fair value	97,481,837	93,388,971
Collateralized Mortgage-Backed Securities [Member]
Securities without a specific due date, amortized cost	42,847,960
Securities without a specific due date, fair value	40,259,680
Securities without a specific due date, amortized cost	42,847,960
Redeemable Preferred Stock [Member]
Securities without a specific due date, amortized cost	308,444
Securities without a specific due date, fair value	297,584
Securities without a specific due date, amortized cost	308,444
Total fixed maturity securities, amortized cost	308,444	215,805
Total fixed maturity securities, fair value	$ 297,584	$ 188,921