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v3.23.3

Summary of Significant Accounting Policies - Narrative (Details) | 12 Months Ended
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Sep. 30, 2023 USD ($) a | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($)
Property, Plant and Equipment [Line Items] |  |  |
Accounts receivable, net | $ 712,000 | $ 324,000 |
Federal insured limit | 250,000 |  |
Impairment of long-lived asset | 0 | 0 | $ 0
Impairment loss | 0 | 0 |
Tropicana |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Accounts receivable, net | $ 0 | 0 |
Area of land owned (in acres) | a | 7,000 |  |
Grove Management Services |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Operating revenue | $ 0 | 10,598,000 | 15,752,000
Operating expenses | 0 | 9,711,000 | $ 14,342,000
Citrus trees |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Accounts receivable, net | $ 394,000 | $ 171,000 |
Pre-productive maintenance costs capitalization period | 4 years |  |
Useful life | 25 years |  |

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