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Commitments and Contingencies - Additional Information (Detail) |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 11 Months Ended | 13 Months Ended | 14 Months Ended | 25 Months Ended | 44 Months Ended | 61 Months Ended | 72 Months Ended | 89 Months Ended | 115 Months Ended | 118 Months Ended |  |
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Jun. 01, 2017 farm | Aug. 31, 2017 USD ($) a | Jun. 30, 2017 a farm | Jun. 30, 2018 USD ($) a | Mar. 31, 2018 USD ($) | Jun. 30, 2017 USD ($) a | Jun. 30, 2018 USD ($) a | Jun. 30, 2017 USD ($) a | Jun. 30, 2018 USD ($) a | Jun. 30, 2018 USD ($) a | Sep. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) | Dec. 31, 2020 USD ($) | Jun. 30, 2022 USD ($) | Feb. 23, 2024 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2026 USD ($) | May 31, 2027 USD ($) | Jun. 07, 2018 a | May 31, 2017 farm
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated cost |  |  |  |  |  |  | $ 11,356,000 | $ 1,624,000 |  |  |  |  |  |  |  |  |  |  |  |
Rental revenue |  |  |  | $ 6,632,000 |  | $ 5,994,000 | $ 13,320,000 | $ 11,742,000 |  |  |  |  |  |  |  |  |  |  |  |
Number of farms acquired | farm | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Area of real estate property (in acres) | a |  |  | 57,930 | 63,325 |  | 57,930 | 63,325 | 57,930 | 63,325 | 63,325 |  |  |  |  |  |  |  |  |  |
2017 New Real Estate Activity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rental revenue |  |  |  |  |  | $ 883,000 |  | $ 1,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Area of real estate property (in acres) | a |  |  | 7,338 |  |  | 7,338 |  | 7,338 |  |  |  |  |  |  |  |  |  |  |  |
Oregon |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of farms in lease amendment | farm |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1
Rental revenue |  |  |  |  |  |  | $ 618,000 | $ 589,000 |  |  |  |  |  |  |  |  |  |  |  |
Accrued liabilities related to lease |  |  |  | $ 921,000 |  |  | $ 921,000 |  | $ 921,000 | $ 921,000 |  |  |  |  |  |  |  |  |  |
Area of real estate property (in acres) | a |  |  | 2,313 | 2,313 |  | 2,313 | 2,313 | 2,313 | 2,313 | 2,313 |  |  |  |  |  |  |  |  |  |
Oregon | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated cost |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,800,000 |  |  |  |  |  |  |
Annual rent escalation (as percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.50% |  |  |  |
Rental revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 718,000 |  |  |  |
North Carolina |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rental revenue |  |  |  |  |  |  | $ 82,000 | $ 10,000 |  |  |  |  |  |  |  |  |  |  |  |
Number of farms acquired | farm |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of years in lease term to provide additional support |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expended or accrued for capital improvements |  |  |  |  |  |  |  |  |  | $ 166,000 |  |  |  |  |  |  |  |  |  |
Area of real estate property (in acres) | a |  |  | 310 | 310 |  | 310 | 310 | 310 | 310 | 310 |  |  |  |  |  |  |  |  |  |
North Carolina | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated cost |  |  |  |  |  |  |  |  |  |  |  | $ 300,000 |  |  |  |  |  |  |  |
Rental revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 157,000 |  |  |
Florida |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rental revenue |  |  |  |  |  |  | $ 3,530,000 | $ 3,143,000 |  |  |  |  |  |  |  |  |  |  |  |
Expended or accrued for capital improvements |  |  |  |  |  |  |  |  | $ 2,400,000 |  |  |  |  |  |  |  |  |  |  |
Area of real estate property (in acres) | a |  |  | 9,315 | 10,980 |  | 9,315 | 10,980 | 9,315 | 10,980 | 10,980 |  |  |  |  |  |  |  |  | 26 |
Florida | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rental revenue |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 302,000 | $ 820,000 |  |  |  |  |
Florida | 2017 New Real Estate Activity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expended or accrued for capital improvements |  |  |  |  | $ 748,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Okeechobee, FL | 2017 New Real Estate Activity | Parrot Avenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Area of real estate property (in acres) | a |  | 1,884 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Okeechobee, FL | 2017 New Real Estate Activity | Forecast | Parrot Avenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated cost |  |  |  |  |  |  |  |  |  |  | $ 2,500,000 |  |  |  |  |  |  |  |  |
California |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual rent escalation (as percent) |  | 6.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rental revenue |  |  |  |  |  |  | $ 6,061,000 | $ 5,728,000 |  |  |  |  |  |  |  |  |  |  |  |
Number of years in lease term to provide additional support |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expended or accrued for capital improvements |  |  |  |  |  |  |  |  | $ 710,000 |  |  |  |  |  |  |  |  |  |  |
Area of real estate property (in acres) | a |  |  | 6,713 | 8,241 |  | 6,713 | 8,241 | 6,713 | 8,241 | 8,241 |  |  |  |  |  |  |  |  |  |
California | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rental revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,300,000 |  |
Santa Barbara, CA | 2017 New Real Estate Activity | Cat Canyon Road |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated cost |  | $ 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Area of real estate property (in acres) | a |  | 361 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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