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Real Estate and Intangible Assets - Summary of Geographic Locations of Properties (Detail) | 3 Months Ended | 9 Months Ended
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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%

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