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Note J - Employee Post-employment Benefits (Details) - Changes in the Amounts Recognized in Accumulated Other Comprehensive Income/(Loss) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Dec. 02, 2014
Dec. 03, 2013
Dec. 02, 2014
Dec. 03, 2013
Changes in the Amounts Recognized in Accumulated Other Comprehensive Income/(Loss) [Abstract]        
Recognized actuarial loss $ 464us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses $ 488us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses $ 927us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses $ 977us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
Amortization of prior service cost   (11)us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit   (22)us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
Pension liability reclassification $ 464us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax $ 477us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax $ 927us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax $ 955us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax