Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 29, 2013		Jun. 30, 2012		Jun. 29, 2013		Jun. 30, 2012
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance					$ (42,623)
Other comprehensive income before reclassifications					(2,499)
Amounts reclassified from accumulated OCI					(1,253)
Net current-period other comprehensive income					(3,752)
Ending balance	(46,375)				(46,375)
Reclassification adjustments out of accumulated OCI [Abstract]
Cost of goods sold	(501,125)		(522,851)		(983,975)		(1,016,026)
Net of tax and noncontrolling interest	2,198	[1]	(658)	[2]	474	[3]	309	[4]
Selling, general, and administrative expense	34,814		33,487		66,157		65,089
Other Comprehensive Income (Loss), Net of Tax	2,218		(4,323)		(3,250)		3,648
Amounts reclassified from accumulated other comprehensive income to: [Member]
Reclassification adjustments out of accumulated OCI [Abstract]
Cost of goods sold	3,967				3,876
Income tax expense	(1,371)				(1,355)
Net of tax	2,596				2,521
Noncontrolling interest	0				0
Net of tax and noncontrolling interest	2,596				2,521
Selling, general, and administrative expense	921				1,889
Income tax expense (benefit)	(302)				(621)
Net of tax	619				1,268
Noncontrolling interest	0				0
Net of tax and noncontrolling interest	619				1,268
Cumulative translation adjustment [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance					(3,033)
Other comprehensive income before reclassifications					(6,470)
Amounts reclassified from accumulated OCI					0
Net current-period other comprehensive income					(6,470)
Ending balance	(9,503)				(9,503)
Unrealized (losses)/gains on derivatives [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance					(166)
Other comprehensive income before reclassifications					2,995
Amounts reclassified from accumulated OCI					(2,521)
Net current-period other comprehensive income					474
Ending balance	308				308
Minimum pension/OPEB liability adjustment [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance					(39,527)
Other comprehensive income before reclassifications					893
Amounts reclassified from accumulated OCI					1,268
Net current-period other comprehensive income					2,161
Ending balance	(37,366)				(37,366)
Unrealized gains on equity investments [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance					103
Other comprehensive income before reclassifications					83
Amounts reclassified from accumulated OCI					0
Net current-period other comprehensive income					83
Ending balance	$ 186				$ 186

[1] Net of tax of $(1,308)

[2] Net of tax of $415

[3] Net of tax of $(328)

[4] Net of tax of $(166)