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Real Estate and Lease Intangibles - Summary of Geographic Locations of Properties (Detail) | 12 Months Ended
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Dec. 31, 2016 USD ($) a farm | Dec. 31, 2015 USD ($) a farm | Dec. 31, 2014 USD ($)
Real Estate Properties [Line Items] |  |  |
Number of Farms | farm | 58 | 43 |
Total Acres | a | 50,592 | 16,810 |
Total acres (as percent) | 100.00% | 100.00% |
Rental revenue | $ | $ 17,305,469 | $ 11,888,091 | $ 7,170,318
Total rental revenue (as percent) | 100.00% | 100.00% |
California |  |  |
Real Estate Properties [Line Items] |  |  |
Number of Farms | farm | 22 | 18 |
Total Acres | a | 6,713 | 3,576 |
Total acres (as percent) | 13.30% | 21.30% |
Rental revenue | $ | $ 9,829,177 | $ 7,754,945 |
Total rental revenue (as percent) | 56.80% | 65.20% |
Florida |  |  |
Real Estate Properties [Line Items] |  |  |
Number of Farms | farm | 15 | 13 |
Total Acres | a | 5,567 | 5,092 |
Total acres (as percent) | 11.00% | 30.30% |
Rental revenue | $ | $ 3,293,475 | $ 2,166,660 |
Total rental revenue (as percent) | 19.00% | 18.20% |
Colorado |  |  |
Real Estate Properties [Line Items] |  |  |
Number of Farms | farm | 9 | 0 |
Total Acres | a | 30,170 | 0 |
Total acres (as percent) | 59.60% | 0.00% |
Rental revenue | $ | $ 1,452,581 | $ 0 |
Total rental revenue (as percent) | 8.40% | 0.00% |
Oregon |  |  |
Real Estate Properties [Line Items] |  |  |
Number of Farms | farm | 4 | 4 |
Total Acres | a | 2,313 | 2,313 |
Total acres (as percent) | 4.60% | 13.80% |
Rental revenue | $ | $ 1,171,887 | $ 1,168,725 |
Total rental revenue (as percent) | 6.80% | 9.80% |
Arizona |  |  |
Real Estate Properties [Line Items] |  |  |
Number of Farms | farm | 2 | 2 |
Total Acres | a | 3,000 | 3,000 |
Total acres (as percent) | 5.90% | 17.80% |
Rental revenue | $ | $ 729,232 | $ 338,446 |
Total rental revenue (as percent) | 4.20% | 2.90% |
Nebraska |  |  |
Real Estate Properties [Line Items] |  |  |
Number of Farms | farm | 2 | 2 |
Total Acres | a | 2,559 | 2,559 |
Total acres (as percent) | 5.10% | 15.20% |
Rental revenue | $ | $ 579,630 | $ 211,908 |
Total rental revenue (as percent) | 3.40% | 1.80% |
Michigan |  |  |
Real Estate Properties [Line Items] |  |  |
Number of Farms | farm | 4 | 4 |
Total Acres | a | 270 | 270 |
Total acres (as percent) | 0.50% | 1.60% |
Rental revenue | $ | $ 249,487 | $ 247,407 |
Total rental revenue (as percent) | 1.40% | 2.10% |

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