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Long-Term Debt and Lines of Credit - Debt Refinancing (Details) |  |  |  |  | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 27, 2016 USD ($) | Sep. 17, 2015 USD ($) | Dec. 03, 2014 USD ($) | Mar. 04, 2014 USD ($) | Dec. 31, 2016 USD ($) a | Dec. 31, 2015 USD ($) | Sep. 30, 2017 USD ($) | Dec. 01, 2016 USD ($) | Nov. 10, 2016 a | Sep. 30, 2016 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  |  |  | $ 194,520,000 |  |  |  |  | $ 197,219,000
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 |  |  |  |  | $ 21,945,000 | $ 24,986,000 |  |  |  |
Silver Nip Citrus |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Minimum current ratio |  |  |  |  | 1.5 |  |  |  |  |
Farm and Ranch Land |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Area of land (in acres) | a |  |  |  |  | 5,762 |  |  |  | 8,640 |
Citrus Groves |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Area of land (in acres) | a |  |  |  |  | 38,200 |  |  |  |  |
Loans Payable | Silver Nip Citrus |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  |  |  |  | 7,000,000 |  |  |  |
Limited guaranty and security agreement |  |  |  |  |  | $ 7,000,000 |  | $ 8,000,000 |  | $ 8,000,000
RLOC |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 25,000,000 |  |  |  |  |  |  |
Availability under line of credit |  |  |  |  | $ 25,000,000 |  |  |  |  |
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 |  |  |  |  |  |  |
Variable interest rate (as a percentage) |  |  |  |  | 2.37% |  |  |  |  | 2.27%
Availability under line of credit |  |  |  |  | $ 37,800,000 |  |  |  |  |
WCLC | Letter of Credit |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 20,000,000 |  |  |  |  |  |  |
Outstanding balance |  |  |  |  | 21,945,000 |  |  |  |  |
Outstanding letters of credit |  |  |  |  | $ 10,300,000 |  |  |  |  |
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% |  |  |  |  |  |  |
Metlife Term Loan | Citree |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  |  | $ 5,000,000 |  |  |  |  |  |
Interest rate | 5.28% | 5.30% |  | 5.49% |  |  |  |  |  |
Advances | $ 2,500,000 | $ 2,000,000 |  | $ 500,000 |  |  |  |  |  |
Fixed Interest Rate Term Loans |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  | $ 125,000,000 |  | $ 103,750,000 |  |  |  |  | $ 105,312,000
Quarterly principal payments |  |  | $ 2,281,250 |  |  |  |  |  |  |
Fixed interest rate (as a percentage) |  |  | 4.15% |  |  |  |  |  |  |
Prepayment amount of the fixed term loan |  |  | $ 8,750,000 |  | 0 |  |  |  |  |
Fixed Interest 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 (as a percentage) |  |  |  |  | 5.35% |  |  |  |  |
Prepayment amount of the fixed term loan |  |  |  |  | $ 5,000,000 |  |  |  |  |
Variable Interest Rate Term Loans |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  | $ 57,500,000 |  | $ 51,750,000 |  |  |  |  | $ 52,469,000
LIBOR spread subject to adjustment period |  |  | 2 years |  |  |  |  |  |  |
Variable interest rate (as a percentage) |  |  |  |  | 2.39% |  |  |  |  | 2.25%
Variable Interest Rate Term Loans | 90 Day LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR spread |  |  | 1.50% |  |  |  |  |  |  |
Scenario, Forecast |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Annual increase of tangible net worth |  |  |  |  |  |  | $ 162,300,000 |  |  |

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