Other Comprehensive Income - Summary of Components of Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Accumulated other comprehensive (loss) income, Net, Beginning balance	$ (79,382)	$ (118,657)	$ (81,897)	$ (120,604)
Gain (Loss) recognized in OCI, Net	132	1,084	2,393	63
Gain (Loss) recognized in OCI, Net	132	1,084	2,393	63
Gain (Loss) reclassified from AOCI to income, Net	76	1,222	330	4,190
Accumulated other comprehensive (loss) income, Net	208	2,306	2,723	4,253
Accumulated other comprehensive (loss) income, Net, Ending balance	(79,174)	(116,351)	(79,174)	(116,351)
Changes in Fair Market Value of Hedges [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Accumulated other comprehensive (loss) income, Gross, Beginning balance	(1,170)	(650)	(998)	(1,606)
Accumulated other comprehensive (loss) income, Income tax (benefit), Beginning balance	(447)	(253)	(402)	(626)
Accumulated other comprehensive (loss) income, Net, Beginning balance	(723)	(397)	(596)	(980)
Gain (Loss) recognized in OCI, Gross	124	(428)	(288)	373
Gain (Loss) recognized in OCI, Income tax (benefit)	47	(168)	(90)	144
Gain (Loss) recognized in OCI, Net	77	(260)	(198)	229
Gain (Loss) recognized in OCI, Gross	124	(428)	(288)	373
Gain (Loss) recognized in OCI, Net	77	(260)	(198)	229
Gain (Loss) reclassified from AOCI to income, Gross	123	81	363	236
Gain (Loss) reclassified from AOCI to income, Income tax (benefit)	47	31	139	92
Gain (Loss) reclassified from AOCI to income, Net	76	50	224	144
Accumulated other comprehensive (loss) income, Gross	247	(347)	75	609
Accumulated other comprehensive (loss) income, Income tax (benefit)	94	(137)	49	236
Accumulated other comprehensive (loss) income, Net	153	(210)	26	373
Accumulated other comprehensive (loss) income, Gross, Ending balance	(923)	(997)	(923)	(997)
Accumulated other comprehensive (loss) income, Income tax (benefit), Ending balance	(353)	(390)	(353)	(390)
Accumulated other comprehensive (loss) income, Net, Ending balance	(570)	(607)	(570)	(607)
Changes in Unrealized Pension Cost [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Accumulated other comprehensive (loss) income, Gross, Beginning balance	(135,180)	(194,629)	(138,133)	(199,241)
Accumulated other comprehensive (loss) income, Income tax (benefit), Beginning balance	(53,896)	(76,660)	(55,028)	(78,398)
Accumulated other comprehensive (loss) income, Net, Beginning balance	(81,284)	(117,969)	(83,105)	(120,843)
Gain (Loss) recognized in OCI, Gross	1,575		4,356
Gain (Loss) recognized in OCI, Income tax (benefit)	539		1,605
Gain (Loss) recognized in OCI, Net	1,036		2,751
Gain (Loss) recognized in OCI, Gross	1,575		4,356
Gain (Loss) recognized in OCI, Net	1,036		2,751
Gain (Loss) reclassified from AOCI to income, Gross		1,943	172	6,555
Gain (Loss) reclassified from AOCI to income, Income tax (benefit)		771	66	2,509
Gain (Loss) reclassified from AOCI to income, Net		1,172	106	4,046
Accumulated other comprehensive (loss) income, Gross	1,575	1,943	4,528	6,555
Accumulated other comprehensive (loss) income, Income tax (benefit)	539	771	1,671	2,509
Accumulated other comprehensive (loss) income, Net	1,036	1,172	2,857	4,046
Accumulated other comprehensive (loss) income, Gross, Ending balance	(133,605)	(192,686)	(133,605)	(192,686)
Accumulated other comprehensive (loss) income, Income tax (benefit), Ending balance	(53,357)	(75,889)	(53,357)	(75,889)
Accumulated other comprehensive (loss) income, Net, Ending balance	(80,248)	(116,797)	(80,248)	(116,797)
Cumulative Translation Adjustment [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Accumulated other comprehensive (loss) income, Gross, Beginning balance	1,470	(473)	949	575
Accumulated other comprehensive (loss) income, Income tax (benefit), Beginning balance	(1,155)	(182)	(855)	(644)
Accumulated other comprehensive (loss) income, Net, Beginning balance	2,625	(291)	1,804	1,219
Gain (Loss) recognized in OCI, Gross	(590)	914	(69)	(134)
Gain (Loss) recognized in OCI, Income tax (benefit)	391	(430)	91	32
Gain (Loss) recognized in OCI, Net	(981)	1,344	(160)	(166)
Gain (Loss) recognized in OCI, Gross	(590)	914	(69)	(134)
Gain (Loss) recognized in OCI, Net	(981)	1,344	(160)	(166)
Gain (Loss) reclassified from AOCI to income, Gross
Gain (Loss) reclassified from AOCI to income, Income tax (benefit)
Gain (Loss) reclassified from AOCI to income, Net
Accumulated other comprehensive (loss) income, Gross	(590)	914	(69)	(134)
Accumulated other comprehensive (loss) income, Income tax (benefit)	391	(430)	91	32
Accumulated other comprehensive (loss) income, Net	(981)	1,344	(160)	(166)
Accumulated other comprehensive (loss) income, Gross, Ending balance	880	441	880	441
Accumulated other comprehensive (loss) income, Income tax (benefit), Ending balance	(764)	(612)	(764)	(612)
Accumulated other comprehensive (loss) income, Net, Ending balance	$ 1,644	$ 1,053	$ 1,644	$ 1,053

Accumulated Other Comprehensive Income Loss Tax

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Other Comprehensive Income Loss Before Reclassifications Tax

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Reclassification From Accumulated Other Comprehensive Income Current Period Tax

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Amount before tax of increase (decrease) in accumulated in equity from transactions and other events and circumstances from non-owner sources. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount before tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount before tax, after reclassification adjustments of other comprehensive income (loss).

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Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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Amount before tax of reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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