Accumulated Other Comprehensive (Loss) Income - Summary of Components of Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 29, 2015
Foreign currency transaction loss
Foreign currency transaction loss	$ 231	$ 1,688
AOCI Attributable to Parent, Net of Tax
Total accumulated other comprehensive (loss) income, beginning of period	(99,005)
Total accumulated other comprehensive (loss) income, end of period	(98,212)
Accumulated other comprehensive (loss) income
AOCI Attributable to Parent, Net of Tax
Total accumulated other comprehensive (loss) income, beginning of period	(99,005)	(104,233)
Gain (Loss) recognized in OCI, Net	(258)	(50)
Gain (Loss) reclassified from AOCI to income, Net	1,051	118
Total accumulated other comprehensive (loss) income, end of period	(98,212)	(104,165)
Changes in fair market value of hedges
Changes in AOCI, Gross
Gross, beginning of the period	(768)	(1,020)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	242	(327)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	231	190
Gross, ending balance	(295)	(1,157)
Changes in AOCI, Income tax (benefit)
Income tax (benefit), beginning of period	289	384
Income tax (benefit), Gain (Loss) recognized in OCI	(91)	123
Income tax (benefit), Gain (Loss) reclassified from AOCI to income	(88)	(72)
Income tax (benefit), ending of period	110	435
AOCI Attributable to Parent, Net of Tax
Total accumulated other comprehensive (loss) income, beginning of period	(479)	(636)
Gain (Loss) recognized in OCI, Net	151	(204)
Gain (Loss) reclassified from AOCI to income, Net	143	118
Total accumulated other comprehensive (loss) income, end of period	(185)	(722)
Changes in unrealized pension cost
Changes in AOCI, Gross
Gross, beginning of the period	(161,719)	(169,291)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	0	1,930
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	1,451	0
Gross, ending balance	(160,268)	(167,361)
Changes in AOCI, Income tax (benefit)
Income tax (benefit), beginning of period	$ 64,361	65,124
Income tax (benefit), Gain (Loss) recognized in OCI		(673)
Income tax (benefit), Gain (Loss) reclassified from AOCI to income	$ (543)	0
Income tax (benefit), ending of period	63,818	64,451
AOCI Attributable to Parent, Net of Tax
Total accumulated other comprehensive (loss) income, beginning of period	(97,358)	(104,167)
Gain (Loss) recognized in OCI, Net	0	1,257
Gain (Loss) reclassified from AOCI to income, Net	908	0
Total accumulated other comprehensive (loss) income, end of period	(96,450)	(102,910)
Cumulative translation adjustment
Changes in AOCI, Gross
Gross, beginning of the period	(1,279)	245
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(406)	(736)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	0	0
Gross, ending balance	(1,685)	(491)
Changes in AOCI, Income tax (benefit)
Income tax (benefit), beginning of period	111	325
Income tax (benefit), Gain (Loss) recognized in OCI	(3)	(367)
Income tax (benefit), Gain (Loss) reclassified from AOCI to income	0	0
Income tax (benefit), ending of period	108	(42)
AOCI Attributable to Parent, Net of Tax
Total accumulated other comprehensive (loss) income, beginning of period	(1,168)	570
Gain (Loss) recognized in OCI, Net	(409)	(1,103)
Gain (Loss) reclassified from AOCI to income, Net	0	0
Total accumulated other comprehensive (loss) income, end of period	$ (1,577)	$ (533)