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Long-Term Debt and Lines of Credit - Narrative (Details) |  | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 04, 2014 USD ($) a loan | Nov. 30, 2019 USD ($) | Sep. 30, 2019 USD ($) a loan | Sep. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Feb. 15, 2015 USD ($) | Sep. 30, 2014 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate term loans |  |  | $ 163,449,000 | $ 174,349,000 |  |  |
Debt issuance cost, net |  |  | $ 1,369,000 | 1,563,000 |  |  |
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 |  |  | $ 163,522,000 |  |  |  |
Minimum current ratio |  |  | 1.50 |  |  |  |
Debt to total assets ratio |  |  | 0.625 |  |  |  |
Limit on capital expenditures |  |  | $ 30,000,000 |  |  |  |
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 |  |  |  |
Silver Nip Citrus | Citrus Grove |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Area of land owned (in acres) | a | 1,500 |  |  |  |  |  |
Met Fixed-Rate Term Loans |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate term loans |  |  | $ 89,688,000 | 95,938,000 |  |  |
Quarterly principal payments |  |  | $ 2,281,250 |  |  |  |
Fixed interest rate |  |  | 4.15% |  |  |  |
Prepayment amount of the fixed term loan (up to) |  |  | $ 8,750,000 |  |  |  |
Availability under line of credit |  |  | 5,625,000 |  |  |  |
Debt issuance cost, net |  |  | 724,000 | 836,000 |  |  |
Met Fixed-Rate Term Loans | Subsequent Event |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate term loans |  | $ 4,455,000 |  |  |  |  |
Quarterly principal payments |  | $ 220,000 |  |  |  |  |
Met Fixed-Rate Term Loans | Silver Nip Citrus |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate term loans |  |  | 27,550,000 |  |  |  |
Quarterly principal payments |  |  | $ 290,000 |  |  |  |
Fixed interest rate |  |  | 5.35% |  |  |  |
Prepayment amount of the fixed term loan (up to) |  |  | $ 5,000,000 |  |  |  |
Area of property that served as collateral (in acres) | a |  |  | 5,700 |  |  |  |
Number of fixed rate term loans | loan |  |  | 2 |  |  |  |
Amount of prepayment |  |  |  |  | $ 4,453,000 | $ 750,000 |
Amount of prepayment in excess of total without penalty |  |  | $ 203,000 |  |  |  |
Premium payment of penalty |  |  | 22,000 |  |  |  |
Met Fixed-Rate Term Loans | Silver Nip Citrus | Prudential |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate term loans | $ 5,500,000 |  |  |  |  |  |
Quarterly principal payments | $ 55,000 |  |  |  |  |  |
Met Variable-Rate Term Loans |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate term loans |  |  | $ 43,844,000 | $ 46,719,000 |  |  |
LIBOR spread subject to adjustment period |  |  | 2 years |  |  |  |
Variable interest rate |  |  | 3.91% | 3.99% |  |  |
Debt issuance cost, net |  |  | $ 334,000 | $ 385,000 |  |  |
Met Variable-Rate Term Loans | LIBOR |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
LIBOR spread (as a percent) |  |  | 1.65% |  |  |  |
Fixed Rate Term Loan1 | Silver Nip Citrus |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Fixed interest rate | 3.85% |  |  |  |  |  |
Fixed Rate Term Loan 2 | Silver Nip Citrus |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Fixed interest rate | 3.45% |  |  |  |  |  |
Silver Nip Citrus Debt | Silver Nip Citrus |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt issuance cost, net |  |  | $ 271,000 | 298,000 |  |  |
Citrus Groves |  |  |  |  |  |  |
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 |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt issuance cost, gross |  |  |  |  |  |  | $ 2,834,000
Debt issuance cost, net |  |  | $ 1,066,000 | $ 1,357,000 |  |  | $ 339,000
Revolving Credit Facility | Met Fixed-Rate Term Loans |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate term loans |  |  | 125,000,000 |  |  |  |
Revolving Credit Facility | Met Variable-Rate Term Loans |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate term loans |  |  | 57,500,000 |  |  |  |
RLOC |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  | 25,000,000 |  |  |  |
Availability under line of credit |  |  | $ 25,000,000 |  |  |  |
Annual commitment fee (as a percent) |  |  | 0.25% |  |  |  |
RLOC | LIBOR |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
LIBOR spread (as a percent) |  |  | 1.65% |  |  |  |
WCLC |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 70,000,000 |  |  |  |
Variable interest rate |  |  | 3.85% | 3.85% |  |  |
Availability under line of credit |  |  | $ 69,540,000 | $ 57,015,000 |  |  |
Annual commitment fee (as a percent) |  |  | 0.20% |  |  |  |
WCLC | Letter of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 20,000,000 |  |  |  |
Availability under line of credit |  |  | 2,000,000 |  |  |  |
Outstanding balance |  |  | 0 |  |  |  |
Outstanding letters of credit |  |  | $ 460,000 |  |  |  |
WCLC | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Annual commitment fee (as a percent) |  |  | 0.20% |  |  |  |
WCLC | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Annual commitment fee (as a percent) |  |  | 0.30% |  |  |  |
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 |  |  | $ 133,000 | 123,000 |  |  |
Metlife Term Loan | Citree |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving line of credit |  |  | 5,000,000 |  |  |  |
Outstanding balance |  |  | 4,750,000 | 4,925,000 |  |  |
Debt issuance cost, net |  |  | $ 40,000 | $ 44,000 |  |  |
Area of property that served as collateral (in acres) | a |  |  | 1,200 |  |  |  |
Interest rate |  |  | 5.28% |  |  |  |

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