Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

Stock-Based Compensation [Abstract]

Schedule of stock-based compensation expenses

	Three Months Ended				Six Months Ended
(In thousands)	June 30, 2012		July 2, 2011		June 30, 2012		July 2, 2011
Cost of sales	$	184	$	99	$	301	$	221
Selling, general and administrative expenses		1,469		929		3,308		2,597
Research and development expense		225		123		483		352
	$	1,878	$	1,151	$	4,092	$	3,170