Derivative Financial Instruments (Schedule Of Derivatives Not Designated As Hedging Instruments) (Details) (Other Income Expense Net [Member], Foreign Currency Forward Contracts [Member], Derivatives Not Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Other Income Expense Net [Member] | Foreign Currency Forward Contracts [Member] | Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Income on Derivative	$ 268	$ (744)