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Income Taxes (Details)
3 Months Ended
Apr. 04, 2015
Mar. 29, 2014
Reconciliation of tax rates with federal statutory rate    
Effective tax rate (as a percent) 37.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 38.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations