Note 2 - Investments - Mortgage Loans by Maturity Date (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
One year or less	$ 18,105,867	$ 15,354,542
After one year through five years	3,651,326	8,435,531
Total	21,757,193	23,790,073
Allowance for credit losses	(34,611)	0
Total commercial mortgages	$ 21,722,582	$ 23,790,073