Quarterly report pursuant to Section 13 or 15(d)

Real Estate and Intangible Assets - Summary of Geographic Locations of Properties (Detail)

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Real Estate and Intangible Assets - Summary of Geographic Locations of Properties (Detail)
 3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
a
Jun. 30, 2015
USD ($)
a
Jun. 30, 2016
USD ($)
a
Farm
Jun. 30, 2015
USD ($)
a
Farm
Real Estate Properties [Line Items]        
Number of Farms | Farm     47 36
Total Acres | a 23,456 11,467 23,456 11,467
% of Total Acres     100.00% 100.00%
Rental revenue | $ $ 4,241,612 $ 2,780,456 $ 7,921,085 $ 5,402,783
% of Total Rental Revenue     100.00% 100.00%
California [Member]        
Real Estate Properties [Line Items]        
Number of Farms | Farm     19 15
Total Acres | a 4,029 2,722 4,029 2,722
% of Total Acres     17.20% 23.70%
Rental revenue | $     $ 4,502,644 $ 3,712,894
% of Total Rental Revenue     56.80% 68.70%
Florida [Member]        
Real Estate Properties [Line Items]        
Number of Farms | Farm     13 12
Total Acres | a 5,094 4,401 5,094 4,401
% of Total Acres     21.70% 38.40%
Rental revenue | $     $ 1,539,217 $ 820,834
% of Total Rental Revenue     19.40% 15.20%
Oregon [Member]        
Real Estate Properties [Line Items]        
Number of Farms | Farm     4 4
Total Acres | a 2,313 2,313 2,313 2,313
% of Total Acres     9.90% 20.20%
Rental revenue | $     $ 584,962 $ 583,763
% of Total Rental Revenue     7.40% 10.80%
Arizona [Member]        
Real Estate Properties [Line Items]        
Number of Farms | Farm     2 1
Total Acres | a 3,000 1,761 3,000 1,761
% of Total Acres     12.80% 15.40%
Rental revenue | $     $ 358,051 $ 161,935
% of Total Rental Revenue     4.50% 3.00%
Nebraska [Member]        
Real Estate Properties [Line Items]        
Number of Farms | Farm     2 0
Total Acres | a 2,559 0 2,559 0
% of Total Acres     10.90% 0.00%
Rental revenue | $     $ 289,815 $ 0
% of Total Rental Revenue     3.70% 0.00%
Colorado [Member]        
Real Estate Properties [Line Items]        
Number of Farms | Farm     3 0
Total Acres | a 6,191 0 6,191 0
% of Total Acres     26.40% 0.00%
Rental revenue | $     $ 521,653 $ 0
% of Total Rental Revenue     6.60% 0.00%
Michigan [Member]        
Real Estate Properties [Line Items]        
Number of Farms | Farm     4 4
Total Acres | a 270 270 270 270
% of Total Acres     1.10% 2.30%
Rental revenue | $     $ 124,743 $ 123,357
% of Total Rental Revenue     1.60% 2.30%