Note 2 - Investments - Mortgage Loans by Property Type (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Commercial mortgage loans	$ 18,627,526	$ 19,638,897
Allowance for credit losses	(21,644)	(21,644)
Total commercial mortgages	18,605,882	19,617,253
Condominium [Member]
Commercial mortgage loans	231,686	377,621
Multi-property [Member]
Commercial mortgage loans	8,089,164	8,923,604
Multifamily [Member]
Commercial mortgage loans	2,335,317	2,855,008
Industrial Property [Member]
Commercial mortgage loans	1,000,000	1,000,000
Retail [Member]
Commercial mortgage loans	$ 6,971,359	$ 6,482,664

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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+ Details