Note 2 - Investments - Contractual Maturity of Fixed Income Securities (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Due in one year or less, amortized cost	$ 3,599,395
Due in one year or less, fair value	3,541,372
Due after one year through five years, amortized cost	15,021,950
Due after one year through five years, fair value	14,405,515
Due after five years through 10 years, amortized cost	25,349,040
Due after five years through 10 years, fair value	23,585,893
Due after 10 years, amortized cost	26,240,971
Due after 10 years, fair value	21,608,462
Total fixed maturity securities, amortized cost	119,495,174	$ 119,336,041
Total fixed maturity securities, fair value	109,696,001	110,955,697
Collateralized Mortgage-Backed Securities [Member]
Securities without a specific due date, amortized cost	49,097,426
Securities without a specific due date, fair value	46,381,480
Securities without a specific due date, amortized cost	49,097,426
Redeemable Preferred Stock [Member]
Securities without a specific due date, amortized cost	186,392
Securities without a specific due date, fair value	173,279
Securities without a specific due date, amortized cost	186,392
Total fixed maturity securities, amortized cost	186,392	186,393
Total fixed maturity securities, fair value	$ 173,279	$ 170,560