Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments, Before Tax	$ (14,107)	$ 3,270	$ 1,689
Adjustments related to postretirement benefits, Before Tax	(3,809)	1,889	362
Change in unrealized gain/loss on investments, Before Tax		(14)	(16)
Other comprehensive income, Before Tax	(17,916)	5,145	2,035
Foreign currency translation adjustments, Tax (Expense) or Benefit	0	0	0
Adjustments related to postretirement benefits, Tax (Expense) or Benefit	551	(285)	(240)
Change in unrealized gain/loss on investments, Tax (Expense) or Benefit		8
Other comprehensive income, Tax (Expense) or Benefit	551	(277)	(240)
Foreign currency translation adjustments, Net-of-Tax	(14,107)	3,270	1,689
Adjustments related to postretirement benefits, Net-of-Tax	(3,258)	1,604	122
Change in unrealized gain/loss on investments, Net-of-Tax		(6)	(16)
Other comprehensive income, Net-of-Tax	$ (17,365)	$ 4,868	$ 1,795

Amount before tax, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, attributable to parent entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 45

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569643-111683

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Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, on foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

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