Other Comprehensive Income Other Comprehensive Income (Amounts Reclassified Out of Total Other Comprehensive Income) (Details) (Derivatives Designated As Hedging Instruments [Member], Fair Value, Inputs, Level 2 [Member], Cash Flow Hedging [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Amounts Reclassified Out Of Total Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax	$ (175)	$ (30)
Interest Expense [Member] | Interest Rate Swaps [Member]
Amounts Reclassified Out Of Total Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax	(111)	(118)
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax	69	73
Net Revenue [Member] | Foreign Exchange Forward [Member]
Amounts Reclassified Out Of Total Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax	(56)	87
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax	25	(39)
Other Income [Member] | Foreign Exchange Forward [Member]
Amounts Reclassified Out Of Total Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax	(8)	1
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax	$ 4	$ (1)