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Debt - Debt Refinancing (Details) |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Mar. 01, 2016 USD ($) | Sep. 17, 2015 USD ($) | Dec. 03, 2014 USD ($) a | Dec. 02, 2014 USD ($) | Mar. 04, 2014 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2013 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest rate term loans |  |  |  |  |  | $ 205,881,000 | $ 61,640,000 |
Outstanding balance |  |  |  |  |  | 0 | 3,160,000 |
Capitalized amount of debt financing costs |  |  | $ 2,834,000 |  |  |  |  |
Deferred financing costs |  |  |  |  |  | 2,543,000 |  |
Loss on extinguishment of debt |  |  |  |  |  | 1,051,000 | 0 | $ 0
Minimum debt service coverage ratio |  |  | 1.10 |  |  |  |  |
Tangible net worth |  |  | $ 160,000,000 |  |  |  |  |
Percentage of consolidated net income |  |  | 10.00% |  |  |  |  |
Minimum current ratio |  |  | 1.50 |  |  |  |  |
Debt to total assets ratio |  |  | 0.625 |  |  |  |  |
Limit on capital expenditures |  |  | $ 30,000,000 |  |  |  |  |
Advances |  |  |  |  |  | 81,173,000 | 0 | $ 5,661,000
Other Income (Expense), Net |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  | 1,051,000 |  |
Citrus Groves |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Area of land (in acres) | a |  |  | 39,300 |  |  |  |  |
Farmland |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Area of land (in acres) | a |  |  | 14,000 |  |  |  |  |
RLOC |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 25,000,000 |  |  | 25,000,000 |  |
Outstanding balance |  |  |  |  |  | 0 | 0 |
RLOC | 90 Day LIBOR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread |  |  | 1.50% |  |  |  |  |
RLOC | LIBOR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Annual commitment fee (as a percent) |  |  | 0.25% |  |  |  |  |
WCLC |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 70,000,000 |  |  | $ 70,000,000 |  |
Variable interest rate |  |  |  |  |  | 1.95% |  |
Availability under line of credit |  |  |  |  |  | $ 52,501,500 |  |
Outstanding letters of credit |  |  |  |  |  | 17,498,500 |  |
Outstanding balance |  |  |  |  |  | $ 0 | 0 |
WCLC | Letter of Credit |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 20,000,000 |  |  |  |  |
WCLC | One Month LIBOR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread |  |  |  |  |  | 1.75% |  |
WCLC | One Month LIBOR | Minimum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread |  |  | 1.75% |  |  |  |  |
Annual commitment fee (as a percent) |  |  | 0.20% |  |  |  |  |
WCLC | One Month LIBOR | Maximum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread |  |  | 2.50% |  |  |  |  |
Annual commitment fee (as a percent) |  |  | 0.30% |  |  |  |  |
Old RLOC |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Revolving line of credit |  |  |  | $ 60,000,000 |  |  |  |
Outstanding balance |  |  |  |  |  |  | $ 0 |
Deferred financing costs |  |  |  |  |  | $ 318,000 |  |
Old RLOC | LIBOR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Annual commitment fee (as a percent) |  |  |  | 0.20% |  |  |  |
Old RLOC | One Month LIBOR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread |  |  | 1.95% |  |  |  | 1.95% |
Old RLOC | One Month LIBOR | Minimum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread |  |  |  | 1.95% |  |  |  |
Old RLOC | One Month LIBOR | Maximum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread |  |  |  | 2.95% |  |  |  |
Metlife Term Loan | Citree |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Revolving line of credit |  |  |  |  | $ 5,000,000 |  |  |
Deferred financing costs |  |  |  |  |  | 57,000 |  |
Interest rate |  | 5.30% |  |  | 5.49% |  |  |
Advances |  | $ 2,000,000 |  |  | $ 500,000 |  |  |
Metlife Term Loan | Citree | Scenario, Forecast |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Advances | $ 2,500,000 |  |  |  |  |  |  |
Metropolitan Life Insurance Company and New England Life Insurance Company fixed rate term loans in the original principal amount of $125,000,000: the loans bear interest at the rate of 4.15% per annum as of September 30,2015. The loans are collateralized by real estate and mature in November 2029. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest rate term loans |  |  | $ 125,000,000 |  |  | $ 111,563,000 | $ 0 |
Quarterly principal payments |  |  | $ 2,281,250 |  |  |  |  |
Fixed interest rate |  |  | 4.15% |  |  | 4.15% |  |
Prepayment amount of the fixed term loan |  |  | $ 8,750,000 |  |  |  |  |
Metropolitan Life Insurance Company and New England Life Insurance Company variable rate term loans in the original principal amounts of $57,500,000: the variable interest rate was approximately 1.80% per annum as of September 30, 2015. The loans are collateralized by real estate and mature in November 2029. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest rate term loans |  |  | $ 57,500,000 | $ 33,500,000 |  | $ 55,344,000 | $ 0 |
Quarterly principal payments |  |  |  | $ 500,000 |  |  |  |
LIBOR spread subject to adjustment period |  |  | 2 years |  |  |  |  |
Variable interest rate |  |  |  |  |  | 1.80% | 2.40% |
Metropolitan Life Insurance Company and New England Life Insurance Company variable rate term loans in the original principal amounts of $57,500,000: the variable interest rate was approximately 1.80% per annum as of September 30, 2015. The loans are collateralized by real estate and mature in November 2029. | 90 Day LIBOR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread |  |  | 1.50% |  |  |  |  |
Metropolitan Life Insurance Company and New England Life Insurance Company variable rate term loans in the original principal amounts of $57,500,000: the variable interest rate was approximately 1.80% per annum as of September 30, 2015. The loans are collateralized by real estate and mature in November 2029. | One Month LIBOR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread |  |  |  | 2.25% |  |  |  |

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