Quarterly report pursuant to Section 13 or 15(d)

Real Estate and Intangible Assets - Summary of Total Operating Revenues and Earnings Recognized on Properties Acquired (Detail)

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Real Estate and Intangible Assets - Summary of Total Operating Revenues and Earnings Recognized on Properties Acquired (Detail) - USD ($)
3 Months Ended 6 Months Ended
Feb. 23, 2015
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Real Estate Properties [Line Items]          
Rental revenue   $ 2,780,456 $ 1,561,291 $ 5,402,783 $ 3,056,927
Spring Valley [Member]          
Real Estate Properties [Line Items]          
Rental revenue $ 327,904        
2015 New Real Estate Activity [Member]          
Real Estate Properties [Line Items]          
Rental revenue   257,543   457,976  
Earnings   122,360   $ 226,597  
2015 New Real Estate Activity [Member] | Espinosa Road [Member]          
Real Estate Properties [Line Items]          
Acquisition Date       Jan. 05, 2015  
Rental revenue   194,585   $ 380,802  
Earnings   101,813   $ 198,871  
2015 New Real Estate Activity [Member] | Parrish Road [Member]          
Real Estate Properties [Line Items]          
Acquisition Date       Mar. 10, 2015  
Rental revenue   62,958   $ 77,174  
Earnings   21,770   $ 28,949  
2015 New Real Estate Activity [Member] | Immokalee Exchange [Member]          
Real Estate Properties [Line Items]          
Acquisition Date       Jun. 25, 2015  
Earnings   $ (1,223)   $ (1,223)  
2014 New Real Estate Activity [Member]          
Real Estate Properties [Line Items]          
Rental revenue     33,800   33,800
Earnings     17,564   $ 17,564
2014 New Real Estate Activity [Member] | Collins Road [Member]          
Real Estate Properties [Line Items]          
Acquisition Date         May 30, 2014
Rental revenue     16,072   $ 16,072
Earnings     8,278   $ 8,278
2014 New Real Estate Activity [Member] | Spring Valley [Member]          
Real Estate Properties [Line Items]          
Acquisition Date         Jun. 13, 2014
Rental revenue     13,545   $ 13,545
Earnings     8,335   $ 8,335
2014 New Real Estate Activity [Member] | McIntosh Road [Member]          
Real Estate Properties [Line Items]          
Acquisition Date         Jun. 20, 2014
Rental revenue     4,183   $ 4,183
Earnings     $ 951   $ 951