Quarterly report pursuant to Section 13 or 15(d)

Orange-Co Acquisition (Schedule of Pro-Forma Information) (Details)

v2.4.1.9
Orange-Co Acquisition (Schedule of Pro-Forma Information) (Details) (Orange-Co Acquisition [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Orange-Co Acquisition [Member]
       
Business Acquisition [Line Items]        
Revenues $ 55,122us-gaap_BusinessAcquisitionsProFormaRevenue
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 66,326us-gaap_BusinessAcquisitionsProFormaRevenue
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 71,828us-gaap_BusinessAcquisitionsProFormaRevenue
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 89,856us-gaap_BusinessAcquisitionsProFormaRevenue
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
Income from operations 6,698us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
17,073us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
3,865us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
17,641us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
Net income attributable to common shareholder $ 2,794us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 9,902us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 10,065us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 9,435us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
Basic earnings per common share $ 0.34us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 1.35us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 1.29us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 1.29us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
Diluted earnings per common share $ 0.34us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 1.35us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 1.29us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember
$ 1.28us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted
/ us-gaap_BusinessAcquisitionAxis
= alco_OrangeCoAcquisitionMember