Stock-Based Compensation (Tables)

9 Months Ended

Sep. 29, 2012

Share-based Compensation [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

Stock-based compensation expense recognized under ASC Topic 718, Compensation – Stock Compensation (“ASC 718”), for employees and directors and the effect on our Condensed Consolidated Statements of Operations were as follows:

	Three Months Ended				Nine Months Ended
(In thousands)	September 29, 2012		October 1, 2011		September 29, 2012		October 1, 2011
Cost of sales	$	179	$	119	$	430	$	320
Research, development, and engineering	492		434		1,231		1,050
Selling, general and administrative expenses	2,683		2,105		6,718		4,820
Total stock-based compensation expense	$	3,354	$	2,658	$	8,379	$	6,190

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

We used the following weighted-average assumptions to estimate the fair value of our stock options granted during the three and nine month periods ended September 29, 2012 and October 1, 2011, respectively:

	Three Months Ended		Nine Months Ended
	September 29, 2012	October 1, 2011	September 29, 2012	October 1, 2011
Expected life (in years)	8.4	7.9	7.7993150685	8.2
Risk-free interest rate	1.3%	2.6%	1.4%	3.0%
Volatility	49%	49%	48%	48%
Dividend yield	—	—	—	—