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Long-Term Debt (Narrative) (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2015 USD ($) a | Dec. 31, 2014 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) a | Jun. 30, 2014 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2010 USD ($) | Dec. 03, 2014 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total long-term debt | $ 206,580,000 |  |  | $ 206,580,000 |  | $ 61,640,000 |  |
Capitalized loan origination fees |  | $ 2,834,000 |  |  |  |  |  |
Minimum debt coverage ratio | 1.10 |  |  | 1.10 |  |  |  |
Minimum tangible net worth | $ 160,000,000 |  |  | $ 160,000,000 |  |  |  |
Minimum current ratio | 1.50 |  |  | 1.50 |  |  |  |
Maximum debt ratio | 0.625 |  |  | 0.625 |  |  |  |
(Gain) loss on extinguishment of debt |  | $ 585,000 |  | $ 964,000 |  |  |  |
Annual increase in covenant, percentage |  |  |  | 10.00% |  |  |  |
Maximum capital expenditures | $ 30,000,000 |  |  | $ 30,000,000 |  |  |  |
Rabo Agrifinance, Inc. [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Capitalized loan origination fees |  |  |  |  |  |  | $ 1,202,000 |
Write-off of debt issuance costs |  |  |  | 375,000 |  |  |  |
Unamortized debt issuance costs | 301,000 |  |  | 301,000 |  |  |  | $ 697,000
Alico [Member] | Silver Nip [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Amount of credit facility | 7,000,000 |  |  | 7,000,000 |  |  |  |
Metropolitan Life Insurance Company and New England Life Insurance Company fixed rate term loans in the original principal amount of $125 million [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total long-term debt | $ 113,125,000 |  |  | $ 113,125,000 |  |  |  |
Fixed interest rate | 4.15% |  |  | 4.15% |  |  |  |
Periodic principal payment |  |  |  | $ 2,281,250 |  |  |  |
Amount of prepayment without penalty | $ 8,750,000 |  |  | 8,750,000 |  |  |  |
Metropolitan Life Insurance Company and New England Life Insurance Company variable rate term loans in the original principal amounts of $57.5 million [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total long-term debt | 56,063,000 |  |  | $ 56,063,000 |  |  |  |
LIBOR spread |  |  |  | 1.50% |  |  |  |
Metropolitan Life Insurance Company and New England Life Insurance Company revolving line of credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Amount of credit facility | 25,000,000 |  |  | $ 25,000,000 |  |  |  |
Annual commitment fee |  |  |  | 0.25% |  |  |  |
LIBOR spread |  |  |  | 1.50% |  |  |  |
Working Capital Line of Credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Amount of credit facility | 70,000,000 |  |  | $ 70,000,000 |  |  |  |
LIBOR spread |  |  |  | 1.75% |  |  |  |
Letters of credit outstanding | 17,498,500 |  |  | $ 17,498,500 |  |  |  |
Working Capital Line of Credit [Member] | Letter of Credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Amount of credit facility | $ 20,000,000 |  |  | $ 20,000,000 |  |  |  |
Rabo Agrifinance, Inc. variable rate term loan [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total long-term debt |  |  |  |  |  | $ 34,000,000 |  |
LIBOR spread |  |  |  |  |  | 2.25% |  |
Periodic principal payment |  |  |  |  |  | $ 500,000 |  |
Rabo Agrifinance, Inc. revolving line of credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Amount of credit facility |  |  |  |  |  | $ 60,000,000 |  |
Annual commitment fee |  |  |  |  |  | 0.20% |  |
LIBOR spread |  |  |  |  |  | 1.95% |  |
Minimum [Member] | Working Capital Line of Credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Annual commitment fee |  |  |  | 0.20% |  |  |  |
LIBOR spread |  |  |  | 1.75% |  |  |  |
Minimum [Member] | Rabo Agrifinance, Inc. revolving line of credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread |  |  |  |  |  | 1.95% |  |
Maximum [Member] | Working Capital Line of Credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Annual commitment fee |  |  |  | 0.30% |  |  |  |
LIBOR spread |  |  |  | 2.50% |  |  |  |
Maximum [Member] | Rabo Agrifinance, Inc. revolving line of credit [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
LIBOR spread |  |  |  |  |  | 2.95% |  |
Citrus Groves [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Acres collateralized | a | 38,700 |  |  | 38,700 |  |  |  |
Farmland [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Acres collateralized | a | 14,000 |  |  | 14,000 |  |  |  |

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