Accumulated Other Comprehensive Income (Loss) (Changes in AOCI Components) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016	Mar. 28, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning balance	$ (105,930)
Other comprehensive loss before reclassifications	(203)
Amounts reclassified from AOCI	4,425
Total other comprehensive income	4,222	$ 12
Accumulated Other Comprehensive Loss, Ending balance	(101,708)
Foreign Currency Translation [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning balance	(7,200)
Other comprehensive loss before reclassifications	(203)
Amounts reclassified from AOCI	1,945
Total other comprehensive income	1,742
Accumulated Other Comprehensive Loss, Ending balance	(5,458)
Pension and Other Postretirement Benefits [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning balance	(98,730)
Other comprehensive loss before reclassifications	0
Amounts reclassified from AOCI	2,480
Total other comprehensive income	2,480
Accumulated Other Comprehensive Loss, Ending balance	$ (96,250)