Note 2 - Investments - Contractual Maturity of Fixed Income Securities (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Due in one year or less, amortized cost	$ 3,497,651
Due in one year or less, fair value	3,445,857
Due after one year through five years, amortized cost	14,248,234
Due after one year through five years, fair value	13,369,458
Due after five years through 10 years, amortized cost	24,218,640
Due after five years through 10 years, fair value	21,394,002
Due after 10 years, amortized cost	24,913,629
Due after 10 years, fair value	19,062,474
Total fixed maturity securities, amortized cost	112,865,702	$ 104,580,681
Total fixed maturity securities, fair value	99,100,422	93,388,971
Collateralized Mortgage-Backed Securities [Member]
Securities without a specific due date, amortized cost	45,801,155
Securities without a specific due date, fair value	41,653,431
Securities without a specific due date, amortized cost	45,801,155
Redeemable Preferred Stock [Member]
Securities without a specific due date, amortized cost	186,393
Securities without a specific due date, fair value	175,200
Securities without a specific due date, amortized cost	186,393
Total fixed maturity securities, amortized cost	186,393	215,805
Total fixed maturity securities, fair value	$ 175,200	$ 188,921