Note 2 - Investments - Mortgage Loans by Property Type (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Total commercial mortgages	$ 4,063,276	$ 3,653,142
Condominium [Member]
Total commercial mortgages	1,547,202	1,960,547
Multi-property [Member]
Total commercial mortgages	1,179,501	1,157,950
Multifamily [Member]
Total commercial mortgages	336,573	534,645
Retail [Member]
Total commercial mortgages	$ 1,000,000	$ 0