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STOCK-BASED COMPENSATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Stock-based compensation
Stock-based compensation expense	$ 2,173	$ 1,509	$ 6,265	$ 4,679
Cost of sales
Stock-based compensation
Stock-based compensation expense	189	133	490	354
Selling, general and administrative expenses
Stock-based compensation
Stock-based compensation expense	1,767	1,210	5,075	3,807
Research and development expense
Stock-based compensation
Stock-based compensation expense	$ 217	$ 166	$ 700	$ 518

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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