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Commitments and Contingencies - Additional Information (Details) $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 01, 2017 lease farm | Jun. 30, 2019 USD ($) a | Jun. 30, 2018 USD ($) a | Jun. 30, 2019 USD ($) a | Jun. 30, 2018 USD ($) a | Jan. 01, 2019 USD ($) | Dec. 31, 2018 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Estimated cost | $ |  |  |  | $ 5,549 | $ 11,356 |  |
Number of farms acquired | farm | 2 |  |  |  |  |  |
Area of real estate property (in acres) |  | 75,886 | 63,325 | 75,886 | 63,325 |  |
Number of Leases | lease | 2 |  |  |  |  |  |
Operating lease right-of-use assets | $ |  | $ 198 |  | $ 198 |  |  |
Operating lease liabilities | $ |  | $ 169 |  | $ 169 |  |  | $ 232
Weighted-average discount rate |  | 4.20% |  | 4.20% |  |  |
Lease expense | $ |  | $ 15 | $ 12 | $ 27 | $ 24 |  |
2018 New Real Estate Activity |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Area of real estate property (in acres) |  |  | 337 |  | 337 |  |
Oregon |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Area of real estate property (in acres) |  | 418 | 2,313 | 418 | 2,313 |  |
North Carolina |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Area of real estate property (in acres) |  | 310 | 310 | 310 | 310 |  |
Florida |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Area of real estate property (in acres) |  | 17,184 | 10,980 | 17,184 | 10,980 |  |
Collier and Hendry, FL |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Area of real estate property (in acres) |  | 5,630 |  | 5,630 |  |  |
California |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Area of real estate property (in acres) |  | 11,617 | 8,241 | 11,617 | 8,241 |  |
Santa Barbara, CA |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Area of real estate property (in acres) |  | 361 |  | 361 |  |  |
ASU 2016-02 |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Operating lease right-of-use assets | $ |  |  |  |  |  | $ 218 |
Operating lease liabilities | $ |  |  |  |  |  | $ 213 |
Minimum | ASU 2016-02 |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Weighted-average discount rate |  |  |  |  |  | 2.47% |
Maximum | ASU 2016-02 |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Weighted-average discount rate |  |  |  |  |  | 2.53% |

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