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Debt - Silver Nip Citrus Debt (Details) |  |  | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 28, 2015 USD ($) | Dec. 03, 2014 USD ($) | Sep. 30, 2015 USD ($) a | Sep. 30, 2014 USD ($) | Sep. 30, 2013 USD ($) | Jun. 30, 2015 USD ($) loan | Apr. 27, 2015 USD ($) | Feb. 15, 2015 USD ($) | Dec. 02, 2014 USD ($) | Sep. 04, 2014 a loan | Jun. 30, 2014 USD ($) loan
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of fixed rate term loans | loan |  |  |  |  |  |  |  |  |  | 2 |
Interest rate term loans |  |  | $ 205,881,000 | $ 61,640,000 |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  | 1,051,000 | 0 | $ 0 |  |  |  |  |  |
Outstanding balance |  |  | 0 | 3,160,000 |  |  |  |  |  |  |
Deferred financing costs |  |  | 2,543,000 |  |  |  |  |  |  |  |
Minimum current ratio |  | 1.50 |  |  |  |  |  |  |  |  |
Rabo Agrifinance, Inc. variable rate term loan. The loan was refinanced on December 3, 2014. |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  |  |  |  |  |  |  | $ 60,000,000 |  |
Outstanding balance |  |  |  | 0 |  |  |  |  |  |  |
Deferred financing costs |  |  | 318,000 |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |
Silver Nip Citrus |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Area of land acquired (in acres) | a |  |  | 7,400 |  |  |  |  |  |  |  |
Minimum current ratio |  |  | 2.00 |  |  |  |  |  |  |  |
Silver Nip Citrus | Rabo Agrifinance, Inc. variable rate term loan. The loan was refinanced on December 3, 2014. |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  |  |  |  |  | $ 6,000,000 |  |  |  |
Loss on extinguishment of debt | $ 87,500 |  |  |  |  |  |  |  |  |  |
Outstanding balance |  |  |  |  |  |  |  |  |  |  | $ 3,159,620
Silver Nip Citrus | TRB |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Area of land acquired (in acres) | a |  |  |  |  |  |  |  |  |  | 1,500 |
Silver Nip Citrus | 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] |  |  |  |  |  |  |  |  |  |  |
Number of fixed rate term loans | loan |  |  |  |  |  | 2 |  |  |  |  | 2
Interest rate term loans |  |  |  |  |  | $ 25,640,000 |  |  |  |  | $ 27,550,000
Quarterly principal payments |  |  | $ 290,000 |  |  |  |  |  |  |  |
Fixed interest rate |  |  | 5.35% |  |  |  |  |  |  |  |
Prepayment amount of the fixed term loan |  |  | $ 5,000,000 |  |  |  |  |  |  |  |
Amount of prepayment |  |  |  |  |  |  |  | $ 750,000 |  |  |
Silver Nip Citrus | 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. | Prudential |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  |  |  |  | $ 5,390,000 |  |  |  |  |
Quarterly principal payments |  |  | $ 55,000 |  |  |  |  |  |  |  |
Silver Nip Citrus | Fixed Rate Term Loan1 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Fixed interest rate |  |  | 3.85% |  |  |  |  |  |  |  |
Silver Nip Citrus | Fixed Rate Term Loan2 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Fixed interest rate |  |  | 3.45% |  |  |  |  |  |  |  |
Silver Nip Citrus | Silver Nip Citrus Debt |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Deferred financing costs |  |  | $ 385,000 |  |  |  |  |  |  |  |

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