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Long-Term Debt and Lines of Credit - Debt Refinancing (Details) |  |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 27, 2016 USD ($) | Sep. 17, 2015 USD ($) | Dec. 03, 2014 USD ($) a | Mar. 04, 2014 USD ($) | Mar. 31, 2016 USD ($) | Mar. 31, 2015 USD ($) | Mar. 31, 2016 USD ($) | Mar. 31, 2015 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  |  |  | $ 200,100,000 |  | $ 200,100,000 |  |  | $ 205,481,000
Outstanding balance |  |  |  |  | 5,000,000 |  | 5,000,000 |  |  | 0
Capitalized amount of debt financing costs |  |  | $ 2,834,000 |  |  |  |  |  |  |
Deferred financing costs |  |  |  |  | 2,178,000 |  | 2,178,000 |  |  |
Loss on extinguishment of debt |  |  |  |  | 0 | $ 17,000 | 0 | $ 964,000 |  |
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 |  |  |  |  |  |  | 50,132,000 | 63,528,000 |  |
Scenario, Forecast |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Annual increase of tangible net worth |  |  |  |  |  |  |  |  | $ 161,600,000 |
Other Income (Expense) |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  |  | $ 964,000 |  |
Citrus Groves |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Area of land (in acres) | a |  |  | 39,300 |  |  |  |  |  |  |
Farm and Ranch Land |  |  |  |  |  |  |  |  |  |
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 |  | 25,000,000 |  |  |
Availability under line of credit |  |  |  |  | 20,000,000 |  | 20,000,000 |  |  |
Outstanding balance |  |  |  |  | 5,000,000 |  | 5,000,000 |  |  | 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 |  | $ 70,000,000 |  |  |
Variable interest rate |  |  |  |  | 2.19% |  | 2.19% |  |  |
Availability under line of credit |  |  |  |  | $ 56,000,000 |  | $ 56,000,000 |  |  |
Outstanding letters of credit |  |  |  |  | 13,984,000 |  | 13,984,000 |  |  |
Outstanding balance |  |  |  |  | 0 |  | $ 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% |  |  |  |  |  |  |
Terminated RLOC |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Deferred financing costs |  |  |  |  | 339,000 |  | $ 339,000 |  |  |
Metlife Term Loan | Citree |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  |  | $ 5,000,000 |  |  |  |  |  |
Deferred financing costs |  |  |  |  | 55,000 |  | 55,000 |  |  |
Interest rate |  | 5.30% |  | 5.49% |  |  |  |  |  |
Advances |  | $ 2,000,000 |  | $ 500,000 |  |  |  |  |  |
Metlife Term Loan | Citree | Subsequent Event |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate | 5.28% |  |  |  |  |  |  |  |  |
Advances | $ 2,500,000 |  |  |  |  |  |  |  |  |
Fixed Interest Rate Term Loans |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  | $ 125,000,000 |  | $ 108,438,000 |  | $ 108,438,000 |  |  | 111,563,000
Quarterly principal payments |  |  | $ 2,281,250 |  |  |  |  |  |  |
Fixed interest rate |  |  | 4.15% |  | 4.15% |  | 4.15% |  |  |
Prepayment amount of the fixed term loan |  |  | $ 8,750,000 |  |  |  |  |  |  |
Variable Interest Rate Term Loans |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  | $ 57,500,000 |  | $ 53,906,000 |  | $ 53,906,000 |  |  | $ 55,344,000
LIBOR spread subject to adjustment period |  |  | 2 years |  |  |  |  |  |  |
Variable interest rate |  |  |  |  | 2.12% |  | 2.12% |  |  |
Variable Interest Rate Term Loans | 90 Day LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR spread |  |  | 1.50% |  |  |  |  |  |  |

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