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Related Party Transactions - 734 Investors and 734 Agriculture (Details) | Nov. 19, 2013
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Alico Inc |
Related Party Transaction [Line Items] |
Ownership interest (as a percent) | 51.00%
734 Agriculture |
Related Party Transaction [Line Items] |
Ownership interest (as a percent) | 59.00%

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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=us-gaap_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | dei_LegalEntityAxis=alco_SevenHundredandThirtyFourAgricultureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |