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Stock-Based Compensation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2012	Jul. 01, 2011	Jun. 29, 2012	Jul. 01, 2011
Stock-based compensation in:
Total stock-based compensation	$ 4,702	$ 5,092	$ 9,502	$ 11,094
Total stock-based compensation in operating expense	3,897	4,330	7,903	9,585
Amount capitalized in inventory		(14)
Total stock-based compensation	4,702	5,078	9,502	11,094
Cost of revenue [Member]
Stock-based compensation in:
Total stock-based compensation	805	762	1,599	1,509
Research and development expense [Member]
Stock-based compensation in:
Total stock-based compensation	1,711	1,771	3,435	3,607
Selling, general and administrative expense [Member]
Stock-based compensation in:
Total stock-based compensation	$ 2,186	$ 2,559	$ 4,468	$ 5,978

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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