Summary Of Significant Accounting Policies (Components of Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, December 29, 2013	$ 2,245	[1]
Other comprehensive (loss) income before reclassficiations	405
Amounts reclassified from other comprehensive income (loss)	278
Net other comprehensive income (loss)	683
Balance, March 30, 2014	2,928
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, December 29, 2013	(17,773)
Other comprehensive (loss) income before reclassficiations	50
Amounts reclassified from other comprehensive income (loss)	278
Net other comprehensive income (loss)	328
Balance, March 30, 2014	(17,445)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, December 29, 2013	0
Other comprehensive (loss) income before reclassficiations	0
Amounts reclassified from other comprehensive income (loss)	0
Net other comprehensive income (loss)	0
Balance, March 30, 2014	0
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, December 29, 2013	20,018
Other comprehensive (loss) income before reclassficiations	355
Amounts reclassified from other comprehensive income (loss)	0
Net other comprehensive income (loss)	355
Balance, March 30, 2014	$ 20,373

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