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
Apr. 05, 2016
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Real Estate Properties [Line Items]          
Rental revenue   $ 4,241,612 $ 2,780,456 $ 7,921,085 $ 5,402,783
Parrish Road [Member]          
Real Estate Properties [Line Items]          
Rental revenue $ 139,073        
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  
Rental revenue     0   0
Earnings     $ (1,223)   $ (1,223)
2016 New Real Estate Activity [Member]          
Real Estate Properties [Line Items]          
Rental revenue   581,519   $ 705,518  
Earnings   149,087   $ 170,162  
2016 New Real Estate Activity [Member] | Gunbarrel Road [Member]          
Real Estate Properties [Line Items]          
Acquisition Date       Mar. 03, 2016  
Rental revenue   397,654   $ 521,653  
Earnings   72,522   $ 93,597  
2016 New Real Estate Activity [Member] | Calaveras Avenue [Member]          
Real Estate Properties [Line Items]          
Acquisition Date       Apr. 05, 2016  
Rental revenue   183,865   $ 183,865  
Earnings   $ 76,565   $ 76,565