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Note 3 - Retirement and Other Benefit Plans - Expected Payments for Postretirement Benefits (Details) (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2014
2015 $ 1,762us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
2016 1,838us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
2014 1,997us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
2018 2,105us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
2019 2,234us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
2020-2024 13,653us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
Postretirement Health Coverage [Member]  
2015 43us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_DefinedBenefitPostretirementHealthCoverageMember
2016 43us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_DefinedBenefitPostretirementHealthCoverageMember
2014 43us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_DefinedBenefitPostretirementHealthCoverageMember
2018 42us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_DefinedBenefitPostretirementHealthCoverageMember
2019 41us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_DefinedBenefitPostretirementHealthCoverageMember
2020-2024 $ 427us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= us-gaap_DefinedBenefitPostretirementHealthCoverageMember