Derivative Instruments (Pre-Tax Income/(Expense) Effect Of Derivative Instruments On The Consolidated Statements Of Income) (Details) (Cash Flow Hedges [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Derivative [Line Items]
Total net pre-tax expense from derivative instruments	$ (116)	$ (510)	$ (179)	$ (997)
Interest Rate Swaps [Member] | Interest Expense [Member]
Derivative [Line Items]
Total net pre-tax expense from derivative instruments	(193)	(661)	(384)	(1,331)
Foreign Currency Forwards [Member] | Net Revenue [Member]
Derivative [Line Items]
Total net pre-tax expense from derivative instruments	104	151	230	348
Foreign Currency Forwards [Member] | Other Income Expense Net [Member]
Derivative [Line Items]
Total net pre-tax expense from derivative instruments	$ (27)	$ 0	$ (25)	$ (14)