Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 28, 2013		Sep. 29, 2012		Sep. 28, 2013		Sep. 29, 2012
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance					$ (42,623)
Other comprehensive income before reclassifications					4,709
Amounts reclassified from accumulated OCI					(1,413)
Net current-period other comprehensive income					3,296
Ending balance	(39,327)				(39,327)
Reclassification adjustments out of accumulated OCI [Abstract]
Cost of goods sold	(456,302)		(449,718)		(1,440,277)		(1,465,744)
Net of tax and noncontrolling interest	531	[1]	648	[2]	1,005	[3]	957	[4]
Selling, general, and administrative expense	32,921		32,120		99,078		97,209
Amounts reclassified from accumulated other comprehensive income to: [Member]
Reclassification adjustments out of accumulated OCI [Abstract]
Cost of goods sold	1,046				4,922
Income tax expense	(258)				(1,613)
Net of tax	788				3,309
Noncontrolling interest	0				0
Net of tax and noncontrolling interest	788				3,309
Selling, general, and administrative expense	946				2,835
Income tax expense (benefit)	(318)				(939)
Net of tax	628				1,896
Noncontrolling interest	0				0
Net of tax and noncontrolling interest	628				1,896
Cumulative translation adjustment [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance					(3,033)
Other comprehensive income before reclassifications					211
Amounts reclassified from accumulated OCI					0
Net current-period other comprehensive income					211
Ending balance	(2,822)				(2,822)
Unrealized (losses)/gains on derivatives [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance					(166)
Other comprehensive income before reclassifications					4,314
Amounts reclassified from accumulated OCI					(3,309)
Net current-period other comprehensive income					1,005
Ending balance	839				839
Minimum pension/OPEB liability adjustment [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance					(39,527)
Other comprehensive income before reclassifications					79
Amounts reclassified from accumulated OCI					1,896
Net current-period other comprehensive income					1,975
Ending balance	(37,552)				(37,552)
Unrealized gains on equity investments [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance					103
Other comprehensive income before reclassifications					105
Amounts reclassified from accumulated OCI					0
Net current-period other comprehensive income					105
Ending balance	$ 208				$ 208

[1] Net of tax of $(280)

[2] Net of tax of $(388)

[3] Net of tax of $(607)

[4] Net of tax of $(554)