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Real Estate and Intangible Assets - Additional Information (Details) |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 11, 2024 USD ($) a | Sep. 30, 2024 USD ($) a property | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) a farm property | Sep. 30, 2023 USD ($) | Dec. 31, 2021 USD ($) a contract | Mar. 05, 2024 | Dec. 31, 2023 USD ($) a
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Number of farms | farm |  |  |  | 168 |  |  |  |
Depreciation expense |  | $ 8,500,000 | $ 9,000,000.0 | $ 25,600,000 | $ 26,700,000 |  |  |
Accretion of below-market leases |  | $ 203,000 | 42,000 | $ 392,000 | 131,000 |  |  |
Area of real estate property (in acres) | a |  | 111,836 |  | 111,836 |  |  |  |
Net gain on sale |  | $ (832,000) | (4,000) | $ 6,641,000 | 5,910,000 |  |  |
Net gain (loss) of acquiree since acquisition date |  | $ 28,000 | (24,000) | $ (143,000) | (84,000) |  |  |
Area of water | a |  | 53,787 |  | 53,787 |  |  |  | 46,400
Water assets, fair value |  | $ 36,800,000 |  | $ 36,800,000 |  |  |  | $ 34,600,000
Other operating revenue |  | 0 | 0 | 453,000 | 0 |  |  |
Development in process |  | 1,400,000 |  | 1,400,000 |  |  |  |
Development in process, deferred |  | 3,300,000 |  | 3,300,000 |  |  |  |
Lease revenue, net |  | 22,571,000 | 23,534,000 | 63,667,000 | 65,946,000 |  |  |
Impairment charge |  | $ 2,106,000 | 0 | $ 2,106,000 | 0 |  |  |
Number of impaired properties | property |  | 4 |  | 4 |  |  |  |
Lease intangibles, at cost |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Amortization (accretion) expense related to intangible assets |  | $ 318,000 | 244,000 | $ 838,000 | 752,000 |  |  |
Above-Market Lease Values |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Amortization (accretion) expense related to intangible assets |  | 19,000 | 19,000 | 57,000 | 58,000 |  |  |
Lease incentives and other deferred revenue, net |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Amortization (accretion) expense related to intangible assets |  | (456,000) | $ 36,000 | 201,000 | $ 73,000 |  |  |
Loss from Catastrophes |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Estimated carrying value of property damaged floods and hurricane |  | 855,000 |  | 855,000 |  |  |  |
Hurricane |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Estimated carrying value of property damaged floods and hurricane |  | $ 275,000 |  | $ 275,000 |  |  |  |
Other Various Water Agreements |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Area of water | a |  | 2,819 |  | 2,819 |  |  |  |
Water assets, fair value |  | $ 535,000 |  | $ 535,000 |  |  |  |
Farms |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Number of impaired properties | property |  | 11 |  | 11 |  |  |  |
Fresno LLC |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
LLC ownership interest |  |  |  | 50.00% |  |  |  |
Umatilla LLC |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
LLC ownership interest |  |  |  | 20.50% |  |  |  |
Fresno, California And Umatilla, Oregon |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
LLC ownership value |  | $ 5,600,000 |  | $ 5,600,000 |  |  |  | $ 5,800,000
Florida |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Number of farms | farm |  |  |  | 25 |  |  |  |
Area of real estate property (in acres) | a | 3,748 | 18,720 |  | 18,720 |  |  |  |
Sale of unfarmed land | $ 65,700,000 |  |  |  |  |  |  |
Net gain on sale | $ 10,400,000 |  |  |  |  |  |  |
Area of water | a |  | 0 |  | 0 |  |  |  |
Lease revenue, net |  |  |  | $ 9,100,000 |  |  |  |
Percentage of total lease revenue |  |  |  | 14.30% |  |  |  |
Kern, CA |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Area of water | a |  | 48,309 |  | 48,309 |  |  |  |
Water assets, fair value |  | $ 35,500,000 |  | $ 35,500,000 |  |  |  |
Kern, CA | 2022 Acquisitions |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Number of contracts to purchase banked water | contract |  |  |  |  |  | 3 |  |
Area of water | a |  |  |  |  |  | 45,000 |  |
Payments to acquire water systems |  |  |  |  |  | $ 2,800,000 |  |
Fresno, CA |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Area of water | a |  | 5,478 |  | 5,478 |  |  |  |
Water assets, fair value |  | $ 753,000 |  | $ 753,000 |  |  |  |
Groundwater recharge program, percentage of groundwater credits |  | 50.00% |  | 50.00% |  |  | 50.00% |
Water credits obtained | a |  |  |  | 2,660 |  |  |  |
Fresno, CA | Westlands Water District |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Groundwater recharge program, percentage of groundwater credits |  |  |  |  |  |  | 50.00% |
California |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |
Number of farms | farm |  |  |  | 63 |  |  |  |
Area of real estate property (in acres) | a |  | 34,844 |  | 34,844 |  |  |  |
Area of water | a |  | 53,787 |  | 53,787 |  |  |  |
Lease revenue, net |  |  |  | $ 43,300,000 |  |  |  |
Percentage of total lease revenue |  |  |  | 68.10% |  |  |  |

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