Other Comprehensive Income (Schedule of AOCI) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (loss) December 29, 2012, net of tax	$ (31,329)
Other comprehensive gain before reclassifications	1,088
Amounts reclassified from accumulated other comprehensive income (loss)	814
Net current-period other comprehensive income	1,902
Accumulated Other Comprehensive Income (loss) March 30, 2013, net of tax	(29,427)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (loss) December 29, 2012, net of tax	180
Other comprehensive gain before reclassifications	1,088
Amounts reclassified from accumulated other comprehensive income (loss)	9
Net current-period other comprehensive income	1,097
Accumulated Other Comprehensive Income (loss) March 30, 2013, net of tax	1,277
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated Other Comprehensive Income (loss) December 29, 2012, net of tax	(31,509)
Other comprehensive gain before reclassifications	0
Amounts reclassified from accumulated other comprehensive income (loss)	805
Net current-period other comprehensive income	805
Accumulated Other Comprehensive Income (loss) March 30, 2013, net of tax	$ (30,704)