Accumulated Other Comprehensive Income (Loss) (Changes in AOCI Components) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014
Accumulated Other Comprehensive Income Loss [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning balance	$ (40,300)
Other comprehensive income before reclassifications	88
Amounts reclassified from AOCI	480
Other comprehensive income	568
Accumulated Other Comprehensive Loss, Ending balance	(39,732)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income Loss [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning balance	(1,584)
Other comprehensive income before reclassifications	88
Amounts reclassified from AOCI	0
Other comprehensive income	88
Accumulated Other Comprehensive Loss, Ending balance	(1,496)
Pension and Other Postretirement Benefits [Member]
Accumulated Other Comprehensive Income Loss [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning balance	(38,716)
Other comprehensive income before reclassifications	0
Amounts reclassified from AOCI	480
Other comprehensive income	480
Accumulated Other Comprehensive Loss, Ending balance	$ (38,236)