Note 2 - Investments - Mortgage Loans by Property Type (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Commercial mortgage loans	$ 26,360,660	$ 23,744,155
Allowance for credit losses	(187,619)	(99,118)
Carrying value	26,173,041	23,645,037
Mixed Use [Member]
Commercial mortgage loans	4,547,207	4,352,463
Lodging [Member]
Commercial mortgage loans	2,697,304	2,819,346
Multi-property [Member]
Commercial mortgage loans	1,323,332	866,514
Multifamily [Member]
Commercial mortgage loans	2,676,260	2,678,271
Single Family [Member]
Commercial mortgage loans	50,000	61,000
Industrial Property [Member]
Commercial mortgage loans	800,000	800,000
Retail [Member]
Commercial mortgage loans	$ 14,266,557	$ 12,166,561