Income Taxes Reconciliation of Income Tax Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Income Tax Contingency [Line Items]
Tax at statutory rate	$ 59,361	$ 57,289	$ 19,302
Non-U.S. rate differential, net	(36,616)	(36,377)	(26,652)
U.S. taxation of multinational operations	2,367	3,658	1,727
State income taxes, net	1,970	(1,762)	3,400
Prior year tax matters	(7,009)	(23,534)	3,389
Federal tax credits	(3,399)	(5,452)	(1,657)
Change in valuation allowance	(7,679)	(4,675)	(14,446)
Other, net	(558)	270	(1,188)
Total	$ 8,437us-gaap_IncomeTaxExpenseBenefit	$ (10,583)us-gaap_IncomeTaxExpenseBenefit	$ (16,125)us-gaap_IncomeTaxExpenseBenefit

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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