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Stock-Based Compensation (Schedule of Allocation of Recognized Period Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total costs and expenses	$ 601	$ 412	$ 1,419	$ 1,291
Cost of Revenue [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total costs and expenses	69	34	140	104
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total costs and expenses	147	114	339	354
Selling, General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total costs and expenses	$ 385	$ 264	$ 940	$ 833

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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