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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

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