Note 2 - Investments - Mortgage Loans by Maturity Date (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
One year or less	$ 14,599,568	$ 15,354,542
After one year through five years	5,039,329	8,435,531
Total	19,638,897	23,790,073
Allowance for credit losses	(21,644)	0
Total commercial mortgages	$ 19,617,253	$ 23,790,073