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Long-Term Debt and Lines of Credit - Narrative (Details) | 3 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) a Loan | Dec. 31, 2020 USD ($) | Sep. 30, 2021 USD ($) | Apr. 30, 2021 a | Sep. 30, 2020 USD ($) | Nov. 30, 2019 USD ($) | Sep. 30, 2014 USD ($) | Sep. 04, 2014 a
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Adjusted fixed interest rate | 3.85% |  |  |  |  |  |  |
Deferred Financing Costs, Net | $ 948,000 |  | $ 986,000 |  |  |  |  |
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 | $ 173,216,000 |  |  |  |  |  |  |
Minimum current ratio | 1.50 |  |  |  |  |  |  |
Debt to total assets ratio | 0.625 |  |  |  |  |  |  |
Limit on capital expenditures | $ 30,000,000 |  |  |  |  |  |  |
Debt issuance cost, net | $ 948,000 |  | 986,000 |  |  |  |  |
Silver Nip Citrus |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Area of property that served as collateral (in acres) | a |  |  |  |  |  |  |  | 1,500
Number of fixed rate term loans | Loan | 2 |  |  |  |  |  |  |
Covenant ratio | 1.00 |  |  |  |  |  |  |
Grove Management Services |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Area of land (in acres) | a | 38,200 |  |  | 38,200 |  |  |  |
Grove Management Services | Silver Nip Citrus |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Area of land owned (in acres) | a | 1,500 |  |  |  |  |  |  |
Farm and Ranch Land |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Area of land (in acres) | a | 5,800 |  |  | 5,800 |  |  |  |
Met Fixed-Rate Term Loans |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Quarterly principal payments | $ 1,562,500 |  |  |  |  |  |  |
Fixed interest rate | 4.15% |  |  |  |  |  |  |
Prepayment amount of the fixed term loan | $ 10,312,500 |  |  |  |  |  |  |
Remaining Borrowings Interest To Be Paid At Maturity With Ballon Payment | 70,000,000 |  |  |  |  |  |  |
Deferred Financing Costs, Net | 501,000 |  | 524,000 |  |  |  |  |
Principal | 70,000,000 |  | 70,000,000 |  |  |  |  |
Debt issuance cost, net | 501,000 |  | 524,000 |  |  |  |  |
Met Fixed-Rate Term Loans | Silver Nip Citrus |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Quarterly principal payments | $ 290,000 |  |  |  |  |  |  |
Fixed interest rate | 5.35% |  |  |  |  |  |  |
Area of property that served as collateral (in acres) | a | 5,700 |  |  |  |  |  |  |
Number of fixed rate term loans | Loan | 2 |  |  |  |  |  |  |
Principal | $ 27,550,000 |  |  |  |  | $ 4,455,000,000 |  |
Met Fixed-Rate Term Loans | Silver Nip Citrus | Prudential |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Quarterly principal payments | 55,000 |  |  |  |  |  |  |
Principal | 5,500,000,000 |  |  |  |  |  |  |
Met Variable-Rate Term Loans |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Deferred Financing Costs, Net | 230,000 |  | 241,000 |  |  |  |  |
Principal | 37,375,000 |  | 38,094,000 |  |  |  |  |
Debt issuance cost, net | 230,000 |  | 241,000 |  |  |  |  |
Silver Nip Citrus Debt | Silver Nip Citrus |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Deferred Financing Costs, Net | 186,000 |  |  |  | $ 190,000 |  |  |
Debt issuance cost, net | 186,000 |  |  |  | 190,000 |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt issuance cost, gross |  |  |  |  |  |  | $ 2,834,000,000 |
Deferred Financing Costs, Net | 853,000,000 |  | 891,000,000 |  |  |  | 339,000,000 |
Debt issuance cost, net | 853,000,000 |  | $ 891,000,000 |  |  |  | $ 339,000,000 |
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 |  |  |  |  |  |  |
Quarterly principal payments | $ 718,750 |  |  |  |  |  |  |
LIBOR spread subject to adjustment period | 2 years |  |  |  |  |  |  |
Variable interest rate | 1.78% |  | 1.78% |  |  |  |  |
LIBOR spread (as a percent) | 0.25% |  |  |  |  |  |  |
Availability under line of credit | $ 25,000,000 |  | $ 25,000,000 |  |  |  |  |
RLOC | LIBOR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread (as a percent) | 1.65% |  |  |  |  |  |  |
RLOC | Met Variable-Rate Term Loans |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread subject to adjustment period | 2 years |  |  |  |  |  |  |
Variable interest rate | 1.78% |  | 1.78% |  |  |  |  |
WCLC |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Revolving line of credit | $ 70,000,000 | $ 2,000,000 |  |  |  |  |  |
Variable interest rate |  | 1.85% | 1.83% |  |  |  |  |
LIBOR spread (as a percent) | 0.20% |  |  |  |  |  |  |
Availability under line of credit | $ 60,287,000 |  | $ 69,664,000 |  |  |  |  |
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] |  |  |  |  |  |  |  |
Letter of credit issued |  | $ 336,000 |  |  |  |  |  |
Principal | $ 9,377,000 |  | 0 |  |  |  |  |
WCLC | LIBOR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread (as a percent) |  | 1.75% |  |  |  |  |  |
WCLC | LIBOR | Minimum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread (as a percent) |  | 1.75% |  |  |  |  |  |
WCLC | LIBOR | Maximum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread (as a percent) |  | 2.50% |  |  |  |  |  |
Letter of Credit |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt issuance cost, gross |  |  |  |  | $ 23,000,000 |  |  |
Metlife Term Loan | Citree |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Revolving line of credit | $ 5,000,000 |  |  |  |  |  |  |
Fixed interest rate | 5.28% |  |  |  |  |  |  |
Principal | $ 4,200,000 |  | 4,263,000 |  |  |  |  |
Deferred Financing Costs, Net | $ 31,000 |  | 31,000 |  |  |  |  |
Area of property that served as collateral (in acres) | a | 1,200 |  |  |  |  |  |  |
Debt issuance cost, net | $ 31,000 |  | $ 31,000 |  |  |  |  |

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