Condensed Consolidated Statements Of Comprehensive (Loss) Income (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012	Sep. 30, 2011
Condensed Consolidated Statements Of Comprehensive (Loss) Income [Abstract]
Net (loss) income	$ 1,983	$ 7,212	$ (15,829)	$ 43,105
Unrealized loss on available-for-sale investments		(3,302)		(159)
Tax effect		776		37
Unrealized loss on interest rate swaps	(896)	(412)	(3,073)	(1,229)
Tax effect	336	154	1,152	461
Realized losses (gains) on interest rate swaps, reclassified to net income (loss)	239		717
Tax effect	(90)		(269)
Currency translation adjustments	543	(361)	484	468
Comprehensive income (loss)	$ 2,115	$ 4,067	$ (16,818)	$ 42,683

Other Comprehensive Income Realized Holding Gain Loss On Securities Arising During Period Tax

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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Before tax and reclassification adjustments amount of unrealized holding gain (loss) and transfers on available-for-sale securities.

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