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Lease Intangibles - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Finite Lived Intangible Assets [Line Items]    
Below-market leases, net $ 1,390,372 $ 1,698,086
Weighted average [Member]    
Finite Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, remaining amortization period 3 years 1 month 6 days