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Note 5 - Lease Intangibles - Net Value of Other Intangibles (Details) - USD ($) | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Lease intangibles, gross | $ 3,776,654 | $ 4,110,139
Accumulated Amortization | (3,743,733) | (4,072,836)
Lease Intangibles, net | 32,921 | 37,303
Leases, Acquired-in-Place [Member] |  |
Lease intangibles, gross | 2,515,264 | 2,515,264
Accumulated Amortization | (2,497,462) | (2,495,016)
Lease Intangibles, net | 17,802 | 20,248
Leasing Costs [Member] |  |
Lease intangibles, gross | 1,261,390 | 1,261,390
Accumulated Amortization | (1,246,271) | (1,244,335)
Lease Intangibles, net | 15,119 | 17,055
Above Market Lease [Member] |  |
Lease intangibles, gross | 0 | 333,485
Accumulated Amortization | 0 | (333,485)
Lease Intangibles, net | $ 0 | $ 0

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