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Note 5 - Lease Intangibles (Tables) | 12 Months Ended
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Dec. 31, 2025
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | December 31, 2025 |  |  | December 31, 2024 |
|  | Lease Intangibles |  |  | Accumulated Amortization |  |  | Lease Intangibles, net |  |  | Lease Intangibles |  |  | Accumulated Amortization |  |  | Lease Intangibles, net |
In-place leases |  | $ | 2,377,414 |  |  | $ | (2,375,580 | ) |  | $ | 1,834 |  |  | $ | 2,515,264 |  |  | $ | (2,504,799 | ) |  | $ | 10,465 |
Leasing costs |  |  | 1,090,384 |  |  |  | (1,088,114 | ) |  |  | 2,270 |  |  |  | 1,261,390 |  |  |  | (1,252,078 | ) |  |  | 9,312 |
Above-market leases |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
|  | $ | 3,467,798 |  |  | $ | (3,463,694 | ) |  | $ | 4,104 |  |  | $ | 3,776,654 |  |  | $ | (3,756,877 | ) |  | $ | 19,777 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
2026 |  | $ | 4,104 |
2027 |  |  | — |
Thereafter |  |  | — |
Total |  | $ | 4,104 |

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