Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 26, 2015		Sep. 27, 2014		Sep. 26, 2015		Sep. 27, 2014
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance					$ (42,923)		$ (10,819)
Other comprehensive (loss) income before reclassifications					(16,038)		(4,839)
Amounts reclassified from AOCI					3,877		349
Net current-period other comprehensive income					(12,161)		(4,490)
Ending balance	$ (55,084)		$ (15,309)		(55,084)		(15,309)
Reclassification adjustments out of AOCI [Abstract]
Cost of goods sold	(467,167)		(521,278)		(1,398,366)		(1,574,830)
Depreciation expense					(25,132)		(25,888)
Interest expense	(1,682)		(1,430)		(5,977)		(3,913)
Net of tax and noncontrolling interest	(915)	[1]	(174)	[2]	(2,016)	[3]	(1,650)	[4]
Selling, general, and administrative expense	(32,241)		(34,004)		(98,492)		(100,512)
Cumulative Translation Adjustment [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance					(7,076)		(462)
Other comprehensive (loss) income before reclassifications					(12,099)		(3,337)
Amounts reclassified from AOCI					0		0
Net current-period other comprehensive income					(12,099)		(3,337)
Ending balance	(19,175)		(3,799)		(19,175)		(3,799)
Unrealized Losses/(Gains) on Derivatives [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance					(953)		1,546
Other comprehensive (loss) income before reclassifications					(4,403)		(1,652)
Amounts reclassified from AOCI					2,387		2
Net current-period other comprehensive income					(2,016)		(1,650)
Ending balance	(2,969)		(104)		(2,969)		(104)
Unrealized Losses/(Gains) on Derivatives [Member] | Amount Reclassified from AOCI [Member]
Reclassification adjustments out of AOCI [Abstract]
Cost of goods sold	2,339		(214)		2,990		351
Depreciation expense	0		(71)		0		(446)
Interest expense	91		0		295		0
Income tax (expense) benefit	(664)		65		(898)		97
Net of tax	1,766		(220)		2,387		2
Noncontrolling interest	0		0		0		0
Net of tax and noncontrolling interest	1,766		(220)		2,387		2
Minimum Pension/OPEB Liability Adjustment [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance					(35,164)		(12,158)
Other comprehensive (loss) income before reclassifications					510		143
Amounts reclassified from AOCI					1,490		347
Net current-period other comprehensive income					2,000		490
Ending balance	(33,164)		(11,668)		(33,164)		(11,668)
Minimum Pension/OPEB Liability Adjustment [Member] | Amount Reclassified from AOCI [Member]
Reclassification adjustments out of AOCI [Abstract]
Selling, general, and administrative expense	680		134		2,040		401
Income tax expense	(188)		(19)		(550)		(54)
Net of tax	492		115		1,490		347
Noncontrolling interest	0		0		0		0
Net of tax and noncontrolling interest	492		115		1,490		347
Unrealized Gains on Equity Investments [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance					270		255
Other comprehensive (loss) income before reclassifications					(46)		7
Amounts reclassified from AOCI					0		0
Net current-period other comprehensive income					(46)		7
Ending balance	$ 224		$ 262		$ 224		$ 262

[1] Net of tax of $575

[2] Net of tax of $42

[3] Net of tax of $1014

[4] Net of tax of $907