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Note 5 - Lease Intangibles (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets, Gross, Total $ 3,467,798 $ 3,776,654
Below Market Lease, Net 3,316 8,625
Amortization of Below Market Lease 4,753 4,641
Real Estate Assets Held for Sale [Member]    
Finite-Lived Intangible Assets, Gross, Total $ 0 $ 0