Summary Of Significant Accounting Policies (Components of Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 23, 2012	Jun. 24, 2012	Mar. 25, 2012
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, December 30, 2012	$ 306	$ 989	$ (2,714)	$ (2,001)	$ 12,929	$ 8,032	$ 17,434
Other comprehensive (loss) income before reclassficiations	720
Amounts reclassified from other comprehensive income (loss)	1,219
Net other comprehensive income (loss)	1,939
Balance, December 29, 2013	2,245	989	(2,714)	(2,001)	12,929	8,032	17,434
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, December 30, 2012	(19,431)
Other comprehensive (loss) income before reclassficiations	538
Amounts reclassified from other comprehensive income (loss)	1,120
Net other comprehensive income (loss)	1,658
Balance, December 29, 2013	(17,773)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, December 30, 2012	21
Other comprehensive (loss) income before reclassficiations	0
Amounts reclassified from other comprehensive income (loss)	(21)
Net other comprehensive income (loss)	(21)
Balance, December 29, 2013	0
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, December 30, 2012	19,716
Other comprehensive (loss) income before reclassficiations	182
Amounts reclassified from other comprehensive income (loss)	120
Net other comprehensive income (loss)	302
Balance, December 29, 2013	$ 20,018