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 (Parenthetical) (Detail)

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Real Estate and Intangible Assets - Summary of Total Operating Revenues and Earnings Recognized on Properties Acquired (Parenthetical) (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Real Estate Properties [Line Items]        
Amortization expense on intangibles assets due to lease termination in connection with farm acquisition $ 193,651 $ 72,493 $ 645,448 $ 134,502
2014 New Real Estate Activity [Member]        
Real Estate Properties [Line Items]        
Amortization expense on intangibles assets due to lease termination in connection with farm acquisition   $ 43,328