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Other Comprehensive Income (Details 1) (USD $)
In Thousands, unless otherwise specified
Apr. 04, 2015
Jan. 03, 2015
Accumulated other comprehensive income    
Foreign currency translation gain $ 6,817us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax $ 15,707us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
Changes in defined benefit plan liabilities (3,110)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax (3,401)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
Unrealized holding gains on available-for-sale securities 106us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax 41us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
Total accumulated other comprehensive income $ 3,813us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax $ 12,347us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax