Accumulated Other Comprehensive Income (Loss) (Changes in AOCI Components) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 27, 2014
Accumulated Other Comprehensive Income Loss [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning balance	$ (40,300)
Other comprehensive (loss) income before reclassifications	(334)
Amounts reclassified from AOCI	1,440
Other comprehensive (loss) income	1,106
Accumulated Other Comprehensive Loss, Ending balance	(39,194)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income Loss [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning balance	(1,584)
Other comprehensive (loss) income before reclassifications	(334)
Amounts reclassified from AOCI	0
Other comprehensive (loss) income	(334)
Accumulated Other Comprehensive Loss, Ending balance	(1,918)
Pension and Other Postretirement Benefits [Member]
Accumulated Other Comprehensive Income Loss [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning balance	(38,716)
Other comprehensive (loss) income before reclassifications	0
Amounts reclassified from AOCI	1,440
Other comprehensive (loss) income	1,440
Accumulated Other Comprehensive Loss, Ending balance	$ (37,276)