Income Taxes (Components Of The Provision For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Income Taxes [Abstract]
Domestic, Current	$ 846us-gaap_CurrentFederalTaxExpenseBenefit	$ 9,528us-gaap_CurrentFederalTaxExpenseBenefit	$ 42,710us-gaap_CurrentFederalTaxExpenseBenefit
State, Current	102	99	(3,630)
Foreign, Current	14,736us-gaap_CurrentForeignTaxExpenseBenefit	13,910us-gaap_CurrentForeignTaxExpenseBenefit	11,743us-gaap_CurrentForeignTaxExpenseBenefit
Current	15,684us-gaap_CurrentIncomeTaxExpenseBenefit	23,537us-gaap_CurrentIncomeTaxExpenseBenefit	50,823us-gaap_CurrentIncomeTaxExpenseBenefit
Domestic, Deferred	5,055	1,361	2,856
State, Deferred	1,482		(718)
Foreign, Deferred	(7,809)	858	(15,660)
Deferred	(1,272)us-gaap_DeferredIncomeTaxExpenseBenefit	2,219us-gaap_DeferredIncomeTaxExpenseBenefit	(13,522)us-gaap_DeferredIncomeTaxExpenseBenefit
Provision for (recovery of) income taxes	$ 14,412us-gaap_IncomeTaxExpenseBenefit	$ 25,756us-gaap_IncomeTaxExpenseBenefit	$ 37,301us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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