Fair Value Measurement, Financial Instruments And Risk Management (Amounts Affecting Consolidated Statement Of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Derivatives designated as cash flow hedges: | Foreign currency revenue forecast contracts
Fair Value Disclosures [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives	$ 0	$ 1
Amount of Forward Points Recognized in Other Gain (Loss), net	0	11
Derivatives designated as cash flow hedges: | Cost of sales | Foreign currency revenue forecast contracts
Fair Value Disclosures [Line Items]
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income		(158)
Derivatives not designated as hedging instruments: | Other gain (loss), net | Foreign exchange forwards and options
Fair Value Disclosures [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	$ (30)	$ 213