Stockholders' Equity (Schedule of Reclassifications Out Of Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014		Mar. 31, 2013
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Tax	$ 3		$ (10)
Derivatives Designated As Hedging Instruments [Member] | Foreign Currency Forward Contracts [Member]
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	(359)	[1]	27	[1]
Other Comprehensive Income (Loss), Tax	0	[2]	0	[2]
Derivatives Designated As Hedging Instruments [Member] | Foreign Currency Forward Contracts [Member] | Net Revenue [Member]
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	(425)	[1]	75	[1]
Derivatives Designated As Hedging Instruments [Member] | Foreign Currency Forward Contracts [Member] | Cost Of Revenue [Member]
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	2	[1]	(2)	[1]
Derivatives Designated As Hedging Instruments [Member] | Foreign Currency Forward Contracts [Member] | Operating Expenses [Member]
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	$ 64	[1]	$ (46)	[1]

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

[2] Under our tax structure all hedging gains and losses from derivative contracts are ultimately borne by a legal entity in a jurisdiction with no income tax.