Note 2 - Investments - Amortized Cost and Fair Value of Debt Securities By Contractual Maturity (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
One year or less, amortized cost	$ 323,268	$ 152,840
One year or less, fair value	323,268	147,835
After one year through five years, amortized cost	16,561,985	16,397,124
After one year through five years, fair value	16,521,520	16,461,777
After five years through ten years, amortized cost	6,024,798	6,371,607
After five years through ten years, fair value	5,808,614	6,112,389
More than 10 years, amortized cost	21,149,321	21,488,624
More than 10 years, fair value	17,515,831	18,504,542
Available for sale securities, amortized cost	80,671,044	78,653,792
Available for sale fixed maturity securities (amortized cost: $80,671,044 and $78,653,792, net of allowances for credit losses of $116,563 and $0, as of June 30, 2024 and December 31, 2023, respectively)	76,271,650	74,509,520
Redeemable Preferred Stock [Member]
Debt securities, amortized cost	3,290,872	3,622,572
Debt securities, fair value	3,113,899	3,305,569
Available for sale securities, amortized cost	3,290,872	3,622,572
Available for sale fixed maturity securities (amortized cost: $80,671,044 and $78,653,792, net of allowances for credit losses of $116,563 and $0, as of June 30, 2024 and December 31, 2023, respectively)	3,113,899	3,305,569
Collateralized Mortgage-Backed Securities [Member]
Debt securities, amortized cost	33,320,800	30,621,025
Debt securities, fair value	32,988,518	29,977,408
Available for sale securities, amortized cost	33,320,800	30,621,025
Available for sale fixed maturity securities (amortized cost: $80,671,044 and $78,653,792, net of allowances for credit losses of $116,563 and $0, as of June 30, 2024 and December 31, 2023, respectively)	$ 32,988,518	$ 29,977,408