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 9 Months Ended
Sep. 30, 2016
USD ($)
a
Sep. 30, 2015
USD ($)
a
Sep. 30, 2016
USD ($)
a
Farm
Sep. 30, 2015
USD ($)
a
Farm
Real Estate Properties [Line Items]        
No. of Farms | Farm     56 41
Total Acreage | a 33,800 14,880 33,800 14,880
% of Total Acres     100.00% 100.00%
Rental revenue | $ $ 4,467,217 $ 3,080,240 $ 12,388,303 $ 8,483,023
% of Total Rental Revenue     100.00% 100.00%
California [Member]        
Real Estate Properties [Line Items]        
No. of Farms | Farm     21 18
Total Acreage | a 6,516 3,576 6,516 3,576
% of Total Acres     19.30% 24.00%
Rental revenue | $     $ 6,986,099 $ 5,652,357
% of Total Rental Revenue     56.40% 66.60%
Florida [Member]        
Real Estate Properties [Line Items]        
No. of Farms | Farm     15 12
Total Acreage | a 5,567 4,401 5,567 4,401
% of Total Acres     16.50% 29.60%
Rental revenue | $     $ 2,407,893 $ 1,458,433
% of Total Rental Revenue     19.40% 17.20%
Oregon [Member]        
Real Estate Properties [Line Items]        
No. of Farms | Farm     4 4
Total Acreage | a 2,313 2,313 2,313 2,313
% of Total Acres     6.80% 15.60%
Rental revenue | $     $ 877,547 $ 876,244
% of Total Rental Revenue     7.10% 10.30%
Arizona [Member]        
Real Estate Properties [Line Items]        
No. of Farms | Farm     2 1
Total Acreage | a 3,000 1,761 3,000 1,761
% of Total Acres     8.90% 11.80%
Rental revenue | $     $ 543,642 $ 243,953
% of Total Rental Revenue     4.40% 2.90%
Nebraska [Member]        
Real Estate Properties [Line Items]        
No. of Farms | Farm     2 2
Total Acreage | a 2,559 2,559 2,559 2,559
% of Total Acres     7.60% 17.20%
Rental revenue | $     $ 434,722 $ 67,000
% of Total Rental Revenue     3.50% 0.80%
Colorado [Member]        
Real Estate Properties [Line Items]        
No. of Farms | Farm     8 0
Total Acreage | a 13,575 0 13,575 0
% of Total Acres     40.10% 0.00%
Rental revenue | $     $ 951,285 $ 0
% of Total Rental Revenue     7.70% 0.00%
Michigan [Member]        
Real Estate Properties [Line Items]        
No. of Farms | Farm     4 4
Total Acreage | a 270 270 270 270
% of Total Acres     0.80% 1.80%
Rental revenue | $     $ 187,115 $ 185,036
% of Total Rental Revenue     1.50% 2.20%