Annual report pursuant to Section 13 and 15(d)

Real Estate and Lease Intangibles - Carrying Value of Lease Intangibles and Accumulated Amortization for Each Intangible Asset or Liability Class (Detail)

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Real Estate and Lease Intangibles - Carrying Value of Lease Intangibles and Accumulated Amortization for Each Intangible Asset or Liability Class (Detail) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]    
Estimated Amortization Expense $ 1,999,773 $ 1,763,541
Lease intangibles:    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 3,273,379 2,789,810
Finite-lived intangible asset, accumulated (amortization) accretion (1,273,606) (1,026,269)
Estimated Amortization Expense 1,999,773 1,763,541
In-place leases    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 1,480,842 1,225,955
Leasing costs    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 1,086,582 677,112
Tenant relationships    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 705,955 886,743
Above-market lease values    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 19,528 19,528
Finite-lived intangible asset, accumulated (amortization) accretion (14,050) (7,540)
Below-market lease values and deferred revenue    
Finite-Lived Intangible Assets [Line Items]    
Below-market lease values, gross (785,045) (202,579)
Below-market lease values, accumulated (amortization) accretion 61,389 23,205
Above and below market lease values and deferred revenue    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets (liability) gross (765,517) (183,051)
Finite-lived intangible asset, accumulated (amortization) accretion $ 47,339 $ 15,665