Fair Value Measurement, Financial Instruments And Risk Management (Amounts Affecting Consolidated Statement Of Operations) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2012	Dec. 25, 2011	Dec. 26, 2010
Cash Flow Hedges [Member]
Fair Value Disclosures [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives	$ 507	$ (658)	$ 2,111
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	(1,994)	(1,792)	1,035
Amount of Forward Points Recognized in Other Gain (Loss), net	102	(296)	(124)
Cash Flow Hedges [Member] | Cost Of Sales [Member] | Foreign Currency Revenue Forecast Contracts [Member]
Fair Value Disclosures [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives	507	(658)	1,940
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income	(1,994)	(1,792)	1,194
Amount of Forward Points Recognized in Other Gain (Loss), net	102	(296)	(124)
Cash Flow Hedges [Member] | Interest Expense [Member] | Interest Rate Swap Contracts [Member]
Fair Value Disclosures [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives			171
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income			(159)
Amount of Forward Points Recognized in Other Gain (Loss), net			0
Derivatives Not Designated As Hedging Instruments [Member] | Other Gain (Loss), Net [Member] | Foreign Exchange Forwards And Options [Member]
Fair Value Disclosures [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	$ 261	$ (155)	$ 77