XML 90 R70.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Long-Term Debt and Lines of Credit - Debt Refinancing (Details) |  |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 27, 2016 USD ($) | Sep. 17, 2015 USD ($) | Apr. 28, 2015 USD ($) | Dec. 03, 2014 USD ($) a | Dec. 02, 2014 USD ($) | Mar. 04, 2014 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2010 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  |  |  |  |  | $ 197,219,000 | $ 205,481,000 |  |
Outstanding balance |  |  |  |  |  |  | 5,000,000 | 0 |  |
Capitalized amount of debt financing costs |  |  |  | $ 2,834,000 |  |  |  |  |  |
Deferred financing costs |  |  |  |  |  |  | 2,000,000 |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  | 0 | 1,051,000 | $ 0 |
Minimum debt service coverage ratio |  |  |  | 1.10 |  |  |  |  |  |
Tangible net worth |  |  |  | $ 160,000,000 |  |  |  |  |  |
Percentage of consolidated net income |  |  |  | 10.00% |  |  |  |  |  |
Annual increase of tangible net worth |  |  |  |  |  |  | 161,600,000 |  |  |
Current ratio |  |  |  | 1.50 |  |  |  |  |  |
Debt to total assets ratio |  |  |  | 0.625 |  |  |  |  |  |
Limit on capital expenditures |  |  |  | $ 30,000,000 |  |  |  |  |  |
Advances |  |  |  |  |  |  | 58,882,000 | 81,031,000 | 3,641,000 |
Other Income (Expense) |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  |  | 964,000 |  |
Citrus Groves |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Area of land (in acres) | a |  |  |  | 39,300 |  |  |  |  |  |
Farm and Ranch Land |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Area of land (in acres) | a |  |  |  | 14,000 |  |  |  |  |  |
RLOC |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  |  | $ 25,000,000 |  |  | 25,000,000 |  |  |
Availability under line of credit |  |  |  |  |  |  | 20,000,000 |  |  |
Outstanding balance |  |  |  |  |  |  | 5,000,000 | $ 0 |  |
RLOC | 90 Day LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR spread |  |  |  | 1.50% |  |  |  |  |  |
RLOC | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Annual commitment fee (as a percent) |  |  |  | 0.25% |  |  |  |  |  |
WCLC |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  |  | $ 70,000,000 |  |  | $ 70,000,000 |  |  |
Variable interest rate |  |  |  |  |  |  | 2.27% | 1.95% |  |
Availability under line of credit |  |  |  |  |  |  | $ 59,800,000 |  |  |
Outstanding letters of credit |  |  |  |  |  |  | 10,200,000 |  |  |
Outstanding balance |  |  |  |  |  |  | $ 0 | $ 0 |  |
Capitalized amount of debt financing costs |  |  |  |  |  |  |  |  |  | $ 78,000
WCLC | Silver Nip Citrus |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Limited guaranty and security agreement |  |  |  |  |  |  |  | 8,000,000 |  |
WCLC | Letter of Credit |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  |  | $ 20,000,000 |  |  |  |  |  |
WCLC | One Month LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR spread |  |  |  |  |  |  | 1.75% |  |  |
WCLC | One Month LIBOR | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR spread |  |  |  | 1.75% |  |  |  |  |  |
Annual commitment fee (as a percent) |  |  |  | 0.20% |  |  |  |  |  |
WCLC | One Month LIBOR | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR spread |  |  |  | 2.50% |  |  |  |  |  |
Annual commitment fee (as a percent) |  |  |  | 0.30% |  |  |  |  |  |
Terminated RLOC |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  |  |  | $ 60,000,000 |  |  |  |  |
Outstanding balance |  |  |  |  |  |  |  |  | $ 0 |
Deferred financing costs |  |  |  |  |  |  | $ 339,000 |  |  |
Terminated RLOC | Silver Nip Citrus |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  | $ 6,000,000 |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  | $ 87,000 |  |  |  |  |  |  |
Terminated RLOC | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Annual commitment fee (as a percent) |  |  |  |  | 0.20% |  |  |  |  |
Terminated RLOC | One Month LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR spread |  |  |  | 1.95% |  |  |  |  |  |
Terminated RLOC | One Month LIBOR | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR spread |  |  |  |  | 1.95% |  |  |  |  |
Terminated RLOC | One Month LIBOR | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR spread |  |  |  |  | 2.95% |  |  |  |  |
Letter of Credit |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Capitalized amount of debt financing costs |  |  |  |  |  |  |  |  |  | $ 123,000
Metlife Term Loan | Citree |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Revolving line of credit |  |  |  |  |  | $ 5,000,000 |  |  |  |
Deferred financing costs |  |  |  |  |  |  | 53,000 |  |  |
Interest rate | 5.28% | 5.30% |  |  |  | 5.49% |  |  |  |
Advances | $ 2,500,000 | $ 2,000,000 |  |  |  | $ 500,000 |  |  |  |
Fixed Interest Rate Term Loans |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  |  | $ 125,000,000 |  |  | $ 105,312,000 | 111,563,000 |  |
Quarterly principal payments |  |  |  | $ 2,281,250 |  |  |  |  |  |
Fixed interest rate |  |  |  | 4.15% |  |  | 4.15% |  |  |
Prepayment amount of the fixed term loan |  |  |  | $ 8,750,000 |  |  | $ 0 |  |  |
Fixed Interest Rate Term Loans | Silver Nip Citrus |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  |  |  |  |  | 27,550,000 |  |  |
Quarterly principal payments |  |  |  |  |  |  | $ 290,000 |  |  |
Fixed interest rate |  |  |  |  |  |  | 5.35% |  |  |
Prepayment amount of the fixed term loan |  |  |  |  |  |  | $ 5,000,000 |  |  |
Variable Interest Rate Term Loans |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate term loans |  |  |  | $ 57,500,000 | $ 33,500,000 |  | $ 52,469,000 | $ 55,344,000 |  |
Quarterly principal payments |  |  |  |  | $ 500,000 |  |  |  |  |
LIBOR spread subject to adjustment period |  |  |  | 2 years |  |  |  |  |  |
Variable interest rate |  |  |  |  |  |  | 2.25% | 1.80% | 2.40% |
Variable Interest Rate Term Loans | 90 Day LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR spread |  |  |  | 1.50% |  |  |  |  |  |
Variable Interest Rate Term Loans | One Month LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
LIBOR spread |  |  |  |  | 2.25% |  |  |  |  |

X
- Definition Debt Instrument Amount Of Prepayment Without Penalty + References No definition available. + Details
Name: | alco_DebtInstrumentAmountOfPrepaymentWithoutPenalty
Namespace Prefix: | alco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Instrument, Collateral, Property Acreage. + References No definition available. + Details
Name: | alco_DebtInstrumentCollateralPropertyAcreage
Namespace Prefix: | alco_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Debt Instrument Covenant Maximum Capital Expenditure + References No definition available. + Details
Name: | alco_DebtInstrumentCovenantMaximumCapitalExpenditure
Namespace Prefix: | alco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Instrument, Covenant, Minimum Debt Coverage Ratio. + References No definition available. + Details
Name: | alco_DebtInstrumentCovenantMinimumDebtCoverageRatio
Namespace Prefix: | alco_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Debt Instrument, Covenant, Minimum Tangible Net Worth. + References No definition available. + Details
Name: | alco_DebtInstrumentCovenantMinimumTangibleNetWorth
Namespace Prefix: | alco_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument Covenant, Minimum Tangible Net worth, Annual Increase + References No definition available. + Details
Name: | alco_DebtInstrumentCovenantMinimumTangibleNetworthAnnualIncrease
Namespace Prefix: | alco_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Debt Instrument Covenant, Percentage Annual Increase + References No definition available. + Details
Name: | alco_DebtInstrumentCovenantPercentageAnnualIncrease
Namespace Prefix: | alco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Instrument, London Interbank Offered Rate (LIBOR) Spread Subject to Adjustment, Period + References No definition available. + Details
Name: | alco_DebtInstrumentLondonInterbankOfferedRateLIBORSpreadSubjecttoAdjustmentPeriod
Namespace Prefix: | alco_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line of Credit Facility, Covenant Terms, Current Ratio + References No definition available. + Details
Name: | alco_LineofCreditFacilityCovenantTermsCurrentRatio
Namespace Prefix: | alco_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Long-term Debt, Limited Guaranty and Security Agreement, Amount + References No definition available. + Details
Name: | alco_LongtermDebtLimitedGuarantyandSecurityAgreementAmount
Namespace Prefix: | alco_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of the required periodic payments applied to principal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 + Details
Name: | us-gaap_DeferredFinanceCostsGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_LineOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The effective interest rate during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Indebtedness divided by net capital. + References No definition available. + Details
Name: | us-gaap_RatioOfIndebtednessToNetCapital1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OtherNonoperatingIncomeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=alco_CitrusGrovesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=alco_FarmandRanchLandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=alco_MetropolitanLifeInsuranceCompanyAndNewEnglandLifeInsuranceCompanyRevolvingLineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=alco_A90DayLondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=alco_WorkingCapitalLineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=us-gaap_LetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=alco_OneMonthLondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=alco_RevolvingLineofCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=alco_MetlifeTermLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_DebtInstrumentAxis=alco_FixedRateTermLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=alco_VariableRateTermLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |