Note 2 - Investments - Mortgage Loans by Property Type (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Total commercial mortgages	$ 23,790,073	$ 3,653,142
Condominium [Member]
Total commercial mortgages	1,696,975	1,960,547
Land [Member]
Total commercial mortgages	1,902,277	0
Multi-property [Member]
Total commercial mortgages	9,539,738	1,157,950
Multifamily [Member]
Total commercial mortgages	5,016,424	534,645
Retail [Member]
Total commercial mortgages	$ 5,634,659	$ 0