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Note 5 - Lease Intangibles - Net Value of Other Intangibles (Details) - USD ($) | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Lease intangibles, gross | $ 5,321,295 | $ 7,631,488
Accumulated Amortization | (4,562,496) | (5,526,477)
Lease Intangibles, net | 758,799 | 2,105,011
Leases, Acquired-in-Place [Member] |  |
Lease intangibles, gross | 3,186,889 | 4,360,027
Accumulated Amortization | (2,740,785) | (3,283,027)
Lease Intangibles, net | 446,104 | 1,077,000
Leasing Costs [Member] |  |
Lease intangibles, gross | 1,800,921 | 2,937,976
Accumulated Amortization | (1,542,960) | (2,002,711)
Lease Intangibles, net | 257,961 | 935,265
Above Market Lease [Member] |  |
Lease intangibles, gross | 333,485 | 333,485
Accumulated Amortization | (278,751) | (240,739)
Lease Intangibles, net | $ 54,734 | $ 92,746

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