Quarterly report pursuant to Section 13 or 15(d)

Property Portfolio (summary of the acquired lease intangible amortization) (Details)

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Property Portfolio (summary of the acquired lease intangible amortization) (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2017
Leases, Acquired-in-Place [Member]    
Property, Plant and Equipment [Line Items]    
Finite-Lived Intangible Assets, Accumulated Amortization $ 388,409 $ 1,022,194
Lease Costs [Member]    
Property, Plant and Equipment [Line Items]    
Finite-Lived Intangible Assets, Accumulated Amortization 135,078 304,201
Above Market Leases [Member]    
Property, Plant and Equipment [Line Items]    
Finite-Lived Intangible Assets, Accumulated Amortization 55,757 73,468
Below Market Lease [Member]    
Property, Plant and Equipment [Line Items]    
Finite-Lived Intangible Assets, Accumulated Amortization 32,443 63,470
market ground lease [Member]    
Property, Plant and Equipment [Line Items]    
Finite-Lived Intangible Assets, Accumulated Amortization $ 1,702 $ 3,972