Long-Term Debt (Schedule of Outstanding Debt) (Details) (USD $)
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6 Months Ended |
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Mar. 31, 2015
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Sep. 30, 2014
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Jun. 30, 2014
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Debt Instrument [Line Items] |
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Total |
$ 210,011,000us-gaap_LongTermDebt
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$ 61,640,000us-gaap_LongTermDebt
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Long-term debt, current portion |
4,511,000us-gaap_LongTermDebtCurrent
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3,196,000us-gaap_LongTermDebtCurrent
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Long-term debt, net of current portion |
205,500,000us-gaap_LongTermDebtNoncurrent
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58,444,000us-gaap_LongTermDebtNoncurrent
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Metropolitan Life Insurance Company and New England Life Insurance Company fixed rate term loans in the original principal amount of $125 million [Member] |
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Debt Instrument [Line Items] |
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Total |
114,688,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = alco_FixedRateTermLoanMember
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Principal amount of debt |
125,000,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = alco_FixedRateTermLoanMember
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Fixed interest rate |
4.15%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = alco_FixedRateTermLoanMember
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Metropolitan Life Insurance Company and New England Life Insurance Company variable rate term loans in the original principal amounts of $57.5 million [Member] |
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Debt Instrument [Line Items] |
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Total |
56,781,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = alco_VariableRateTermLoanMember
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Principal amount of debt |
57,500,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = alco_VariableRateTermLoanMember
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Effective interest rate |
1.75%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = alco_VariableRateTermLoanMember
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Metropolitan Life Insurance Company term loan [Member] |
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Debt Instrument [Line Items] |
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Total |
500,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = alco_CitreeTermLoanMember
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Fixed interest rate |
5.49%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = alco_CitreeTermLoanMember
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Amount of future advance |
4,500,000alco_DebtInstrumentAmountOfFutureAdvance / us-gaap_DebtInstrumentAxis = alco_CitreeTermLoanMember
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Rabo Agrifinance, Inc. variable rate term loan [Member] |
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Debt Instrument [Line Items] |
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Total |
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34,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = alco_RevolvingLineOfCreditMember
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Effective interest rate |
2.40%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = alco_RevolvingLineOfCreditMember
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Prudential Mortgage Capital Company, LLC fixed rate term loans (5.35%) [Member] |
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Debt Instrument [Line Items] |
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Total |
26,970,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = alco_PrudentialMortgageCapitalCompanyLlcFixedRateTermLoans5Point35Member
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27,550,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = alco_PrudentialMortgageCapitalCompanyLlcFixedRateTermLoans5Point35Member
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27,550,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = alco_PrudentialMortgageCapitalCompanyLlcFixedRateTermLoans5Point35Member
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Fixed interest rate |
5.35%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = alco_PrudentialMortgageCapitalCompanyLlcFixedRateTermLoans5Point35Member
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Prudential Mortgage Capital Company, LLC fixed rate term loan (3.85%) [Member] |
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Debt Instrument [Line Items] |
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Total |
5,500,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = alco_PrudentialMortgageCapitalCompanyLlcFixedRateTermLoan3Point85Member
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Fixed interest rate |
3.85%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = alco_PrudentialMortgageCapitalCompanyLlcFixedRateTermLoan3Point85Member
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Prudential Mortgage Capital Company, LLC fixed rate term loan (3.45%) [Member] |
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Debt Instrument [Line Items] |
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Total |
5,500,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = alco_PrudentialMortgageCapitalCompanyLlcFixedRateTermLoan3Point45Member
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Fixed interest rate |
3.45%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = alco_PrudentialMortgageCapitalCompanyLlcFixedRateTermLoan3Point45Member
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Note Payable to Financing Company [Member] |
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Debt Instrument [Line Items] |
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Total |
$ 72,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = alco_NotePayableToFinancingCompanyMember
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$ 90,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = alco_NotePayableToFinancingCompanyMember
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