Note 2 - Investments - Amortized Cost and Fair Value of Debt Securities By Contractual Maturity (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
One year or less, amortized cost	$ 100,631	$ 442,846
One year or less, fair value	99,638	450,461
After one year through five years, amortized cost	17,148,985	17,048,721
After one year through five years, fair value	17,104,575	17,035,270
After five years through ten years, amortized cost	5,563,633	5,498,364
After five years through ten years, fair value	5,469,445	5,340,498
More than 10 years, amortized cost	21,324,117	21,337,372
More than 10 years, fair value	18,220,503	17,638,063
Available for sale securities, amortized cost	70,218,924	70,615,724
Available for sale fixed maturity securities (amortized cost: $70,218,924 and $70,615,724 as of March 31, 2023 and December 31, 2022, respectively)	65,716,665	65,316,077
Redeemable Preferred Stock [Member]
Debt securities, amortized cost	3,871,039	3,875,526
Debt securities, fair value	3,426,328	3,355,615
Available for sale securities, amortized cost	3,871,039	3,875,526
Available for sale fixed maturity securities (amortized cost: $70,218,924 and $70,615,724 as of March 31, 2023 and December 31, 2022, respectively)	3,426,328	3,355,615
Collateralized Mortgage-Backed Securities [Member]
Debt securities, amortized cost	22,210,519	22,412,895
Debt securities, fair value	21,396,176	21,496,170
Available for sale securities, amortized cost	22,210,519	22,412,895
Available for sale fixed maturity securities (amortized cost: $70,218,924 and $70,615,724 as of March 31, 2023 and December 31, 2022, respectively)	$ 21,396,176	$ 21,496,170