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Real Estate and Intangible Assets - Summary of Geographic Locations of Properties (Detail) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 USD ($) a | Sep. 30, 2016 USD ($) a | Sep. 30, 2017 USD ($) a farm | Sep. 30, 2016 USD ($) a farm | Aug. 31, 2017 a
Real Estate Properties [Line Items] |  |  |  |  |
No. of Farms | farm |  |  | 72 | 56 |
Total Acres | a | 61,794 | 33,800 | 61,794 | 33,800 |
% of Total Acres |  |  | 100.00% | 100.00% |
Rental Revenue | $ | $ 6,561 | $ 4,467 | $ 18,302 | $ 12,388 |
% of Total Rental Revenue |  |  | 100.00% | 100.00% |
California |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No. of Farms | farm |  |  | 27 | 21 |
Total Acres | a | 7,921 | 6,516 | 7,921 | 6,516 | 361
% of Total Acres |  |  | 12.80% | 19.30% |
Rental Revenue | $ |  |  | $ 8,749 | $ 6,986 |
% of Total Rental Revenue |  |  | 47.80% | 56.40% |
Florida |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No. of Farms | farm |  |  | 17 | 15 |
Total Acres | a | 11,225 | 5,567 | 11,225 | 5,567 | 1,910
% of Total Acres |  |  | 18.20% | 16.50% |
Rental Revenue | $ |  |  | $ 4,839 | $ 2,408 |
% of Total Rental Revenue |  |  | 26.50% | 19.40% |
Colorado |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No. of Farms | farm |  |  | 9 | 8 |
Total Acres | a | 30,170 | 13,575 | 30,170 | 13,575 |
% of Total Acres |  |  | 48.80% | 40.10% |
Rental Revenue | $ |  |  | $ 2,018 | $ 951 |
% of Total Rental Revenue |  |  | 11.00% | 7.70% |
Arizona |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No. of Farms | farm |  |  | 6 | 2 |
Total Acres | a | 6,280 | 3,000 | 6,280 | 3,000 |
% of Total Acres |  |  | 10.20% | 8.90% |
Rental Revenue | $ |  |  | $ 1,114 | $ 544 |
% of Total Rental Revenue |  |  | 6.10% | 4.40% |
Oregon |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No. of Farms | farm |  |  | 4 | 4 |
Total Acres | a | 2,313 | 2,313 | 2,313 | 2,313 |
% of Total Acres |  |  | 3.70% | 6.80% |
Rental Revenue | $ |  |  | $ 887 | $ 877 |
% of Total Rental Revenue |  |  | 4.80% | 7.10% |
Nebraska |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No. of Farms | farm |  |  | 2 | 2 |
Total Acres | a | 2,559 | 2,559 | 2,559 | 2,559 |
% of Total Acres |  |  | 4.20% | 7.60% |
Rental Revenue | $ |  |  | $ 435 | $ 435 |
% of Total Rental Revenue |  |  | 2.40% | 3.50% |
Michigan |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No. of Farms | farm |  |  | 4 | 4 |
Total Acres | a | 270 | 270 | 270 | 270 |
% of Total Acres |  |  | 0.40% | 0.80% |
Rental Revenue | $ |  |  | $ 187 | $ 187 |
% of Total Rental Revenue |  |  | 1.00% | 1.50% |
North Carolina |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No. of Farms | farm |  |  | 2 | 0 |
Total Acres | a | 310 | 0 | 310 | 0 |
% of Total Acres |  |  | 0.50% | 0.00% |
Rental Revenue | $ |  |  | $ 42 | $ 0 |
% of Total Rental Revenue |  |  | 0.20% | 0.00% |
Washington |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No. of Farms | farm |  |  | 1 | 0 |
Total Acres | a | 746 | 0 | 746 | 0 |
% of Total Acres |  |  | 1.20% | 0.00% |
Rental Revenue | $ |  |  | $ 31 | $ 0 |
% of Total Rental Revenue |  |  | 0.20% | 0.00% |

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