Note 2 - Investments - Mortgage Loans by Property Type (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Loans	$ 25,716,381	$ 19,638,897
Allowance for credit losses	(53,794)	(21,644)
Carrying value	25,662,587	19,617,253
Condominium [Member]
Loans	0	377,621
Mixed Use [Member]
Loans	2,143,632	0
Lodging [Member]
Loans	2,495,882	0
Multi-property [Member]
Loans	3,729,359	8,923,604
Multifamily [Member]
Loans	3,388,102	2,855,008
Industrial Property [Member]
Loans	1,800,000	1,000,000
Retail [Member]
Loans	$ 12,159,406	$ 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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