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				6 Months Ended
	Jun. 29, 2014		Jun. 30, 2013		Jun. 29, 2014		Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI-Effective Portion	$ (7)	[1]	$ 314	[1]	$ (571)	[1]	$ 492	[1]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	(139)	[1]	396	[1]	(498)	[1]	423	[1]
Amount of Gain or (Loss) Recognized in Income and Excluded from Effectiveness Testing	(39)		(26)		(66)		(48)
Net Revenue [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	(116)	[1]	445	[1]	(541)	[1]	520	[1]
Cost Of Revenue [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	6	[1]	(1)	[1]	8	[1]	(3)	[1]
Operating Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	(29)	[1]	(48)	[1]	35	[1]	(94)	[1]
Other Expense, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Income and Excluded from Effectiveness Testing	$ (39)		$ (26)		$ (66)		$ (48)

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