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Lease Intangibles (Net Value of Other Intangible Assets and Amortization by Class) (Details) - USD ($) | Sep. 30, 2018 | Dec. 31, 2017
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Finite Lived Intangible Assets [Line Items] |  |
Lease intangibles | $ 10,004,291 | $ 10,104,154
Accumulated amortization | (6,675,008) | (5,967,458)
Lease intangibles, net | 3,329,283 | 4,136,696
Leases, Acquired-in-Place [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Lease intangibles | 5,592,418 | 5,592,418
Accumulated amortization | (3,970,544) | (3,531,441)
Lease intangibles, net | 1,621,875 | 2,060,977
Leasing Cost [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Lease intangibles | 3,727,331 | 3,727,332
Accumulated amortization | (2,408,170) | (2,088,799)
Lease intangibles, net | 1,319,161 | 1,638,533
Above Market Leases [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Lease intangibles | 684,542 | 784,404
Accumulated amortization | (296,295) | (347,218)
Lease intangibles, net | $ 388,247 | $ 437,186

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