Other Comprehensive Income Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Dec. 29, 2012
Schedule Of Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ 14,402		$ 15,960
Accumulated Other Comprehensive Income (Loss), Net of Tax	13,547		15,118
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	162
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(855)		(842)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(1,558)
Other Comprehensive Income (Loss), Net of Tax	(1,571)	1,723
Other Comprehensive Income (Loss), Reclassification Adjustment on Foreign Currency Transaction And Translation Gain Loss Included In Net Income, Net Of Tax	0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent	(13)	134
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(1,558)	1,589
Derivatives Designated As Hedging Instruments [Member] | Fair Value, Inputs, Level 2 [Member] | Cash Flow Hedging [Member]
Schedule Of Accumulated Other Comprehensive Income Loss [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax	(175)	(30)
Income (Loss) Reclassified from Other Comprehensive Income [Member]
Schedule Of Accumulated Other Comprehensive Income Loss [Line Items]
Other Comprehensive Income (Loss), Net of Tax	(175)
Other Comprehensive Income (Loss) Before Reclassifications [Member]
Schedule Of Accumulated Other Comprehensive Income Loss [Line Items]
Other Comprehensive Income (Loss), Net of Tax	$ (1,396)