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v2.4.1.9

Related Party Transactions (Details) (USD $) | 6 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Sep. 30, 2014
Related Party Transaction [Line Items] |  |
Common stock, par value per share | $ 1 us-gaap_CommonStockParOrStatedValuePerShare | $ 1 us-gaap_CommonStockParOrStatedValuePerShare
Silver Nip Citrus Agreement [Member] |  |
Related Party Transaction [Line Items] |  |
Number of shares issuable | 923,257 us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = alco_SilverNipCitrusAgreementMember |
Amount of indebtedness | $ 40,278,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt / us-gaap_BusinessAcquisitionAxis = alco_SilverNipCitrusAgreementMember |
Professional and legal fees | 811,000 us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_BusinessAcquisitionAxis = alco_SilverNipCitrusAgreementMember |
Other liabilities | 6,952,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther / us-gaap_BusinessAcquisitionAxis = alco_SilverNipCitrusAgreementMember |
Book value of assets acquired | 65,739,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets / us-gaap_BusinessAcquisitionAxis = alco_SilverNipCitrusAgreementMember |
Net assets acquired | 18,509,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = alco_SilverNipCitrusAgreementMember |
734 Agriculture [Member] |  |
Related Party Transaction [Line Items] |  |
Ownership interest in subsidiary | 51.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Number of shares owned | 3,725,457 us-gaap_InvestmentOwnedBalanceShares / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Silver Nip [Member] | 734 Agriculture [Member] |  |
Related Party Transaction [Line Items] |  |
Ownership interest in subsidiary | 74.89%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = alco_SilverNipMember |
Silver Nip [Member] | Mr Wilson [Member] |  |
Related Party Transaction [Line Items] |  |
Ownership interest in subsidiary | 5.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = alco_MrWilsonMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = alco_SilverNipMember |
Silver Nip [Member] | Rio Verde Ventures, LLC [Member] |  |
Related Party Transaction [Line Items] |  |
Ownership interest in subsidiary | 20.11%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = alco_RioVerdeVenturesLlcMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = alco_SilverNipMember |
JD Alexander [Member] |  |
Related Party Transaction [Line Items] |  |
Amount of transaction | 2,000,000 us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = alco_JDAlexanderMember |
Term of agreement | 2 years |
Ken Smith [Member] |  |
Related Party Transaction [Line Items] |  |
Amount of transaction | $ 1,225,000 us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = alco_KenSmithMember |
Term of agreement | 2 years |

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