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Equity-Based Compensation (Compensation Expense And Related Tax Benefit For Equity-Based Payments) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Total compensation	$ 3,480	$ 2,385	$ 6,950	$ 4,339
Income tax benefit	1,201	823	2,398	1,497
Cost Of Sales [Member]
Total compensation	299	233	537	420
Selling And Marketing [Member]
Total compensation	264	355	774	546
Research And Development [Member]
Total compensation	347	345	694	661
General And Administrative [Member]
Total compensation	$ 2,570	$ 1,452	$ 4,945	$ 2,712

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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