Derivative Financial Instruments (Schedule Of Company's Derivative Instruments On Other Comprehensive Income And The Consolidated Statement Of Operations) (Details) (Derivatives Designated As Hedging Instruments [Member], Foreign Currency Forward Contracts [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 29, 2013		Sep. 30, 2012		Sep. 29, 2013		Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI-Effective Portion	$ (173)	[1]	$ (411)	[1]	$ 319	[1]	$ 142	[1]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	42	[1]	(108)	[1]	465	[1]	329	[1]
Amount of Gain or (Loss) Recognized in Income and Excluded from Effectiveness Testing	(35)		(26)		(83)		(134)
Other Income, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Income and Excluded from Effectiveness Testing	(35)		(26)		(83)		(134)
Net Revenue [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	2	[1]	(253)	[1]	522	[1]	431	[1]
Cost Of Revenue [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	(2)	[1]	5	[1]	(5)	[1]	(2)	[1]
Operating Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	$ 42	[1]	$ 140	[1]	$ (52)	[1]	$ (100)	[1]

[1] Refer to Note 10, Stockholders' Equity, which summarizes the cumulative other comprehensive income activity related to derivatives.