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Long-Term Debt and Lines of Credit - Narrative (Details) |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Dec. 26, 2023 USD ($) | Oct. 27, 2022 | Dec. 31, 2023 USD ($) a Loan | Mar. 31, 2023 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 | Apr. 30, 2021 a
Debt Instrument [Line Items] |  |  |  |  |  |  |
Adjusted fixed interest rate |  |  | 3.85% |  |  |  |
Fixed interest rate |  |  | 5.35% |  |  |  |
Minimum debt service coverage ratio |  |  |  |  | 1.10 |  |
Tangible net worth |  |  |  |  | $ 160,000,000 |  |
Percentage of consolidated net income |  |  |  | 10.00% |  |  |
Annual increase of tangible net worth |  |  |  | $ 174,628,000 |  |  |
Minimum current ratio |  |  |  |  | 1.50 |  |
Debt to total assets ratio |  |  |  |  | 0.625 |  |
Limit on capital expenditures |  |  |  |  | $ 30,000,000 |  |
Long-term debt |  |  | $ 84,709,000 |  | 103,976,000 |  |
Silver Nip Citrus |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Covenant ratio |  |  | 1.00 |  |  |  |
Grove Management Services |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Area of land (in acres) | a |  |  |  |  |  |  | 38,200
Farm and Ranch Land |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Area of land (in acres) | a |  |  |  |  |  |  | 5,800
Met Fixed-Rate Term Loans | Silver Nip Citrus |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Quarterly principal payments |  |  | $ 290,000 |  |  |  |
Area of property that served as collateral (in acres) | a |  |  | 5,700 |  |  |  |
Number of fixed rate term loans | Loan |  |  | 2 |  |  |  |
Long-term debt |  |  | $ 27,550,000 |  |  |  |
Revolving Credit Facility | Met Fixed-Rate Term Loans |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  | 125,000,000 |  |  |  |
Revolving Credit Facility | Met Variable-Rate Term Loans |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  | 57,500,000 |  |  |  |
RLOC |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  | 25,000,000 |  |  |  |
Outstanding standby letters of credit |  |  | 25,000,000 |  | $ 25,000,000 |  |
Quarterly principal payments |  |  | $ 406,000 |  |  |  |
LIBOR spread (as a percent) |  |  |  |  |  | 0.25% |
Debt prepayment | $ 19,094,000 |  |  |  |  |  |
RLOC | SOFR |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
LIBOR spread subject to adjustment period |  |  | 2 years |  |  | 2 years |
RLOC | London Interbank Offered Rate (LIBOR) 1 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
LIBOR spread (as a percent) |  |  | 1.75% |  |  |  |
RLOC | Met Variable-Rate Term Loans |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Variable interest rate |  |  | 7.56% |  | 7.52% |  |
WCLC |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 70,000,000 |  |  |  |
Availability under line of credit |  |  | $ 69,752,000 |  | $ 45,030,000 |  |
LIBOR spread (as a percent) |  |  | 0.20% |  |  |  |
Variable interest rate |  |  | 7.11% |  | 7.07% |  |
WCLC | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
LIBOR spread (as a percent) |  |  | 0.20% |  |  |  |
WCLC | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
LIBOR spread (as a percent) |  |  | 0.30% |  |  |  |
WCLC | Letter of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 2,000,000 |  |  |  |
WCLC | SOFR | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
LIBOR spread (as a percent) |  | 1.75% |  |  | 1.75% |  |
WCLC | SOFR | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
LIBOR spread (as a percent) |  | 2.50% |  |  |  |  |
Metlife Term Loan | Citree |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 5,000,000 |  |  |  |
Fixed interest rate |  |  | 5.28% |  |  |  |
Area of property that served as collateral (in acres) | a |  |  | 1,200 |  |  |  |
Financial Standby Letter of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Letter of credit outstanding |  |  | $ 248,000 |  | $ 248,000 |  |
Financial Standby Letter of Credit | Letter of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Letter of credit outstanding |  |  | $ 248,000 |  | $ 248,000 |  |

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