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Employee Benefit Plans (Tables)

9 Months Ended

Sep. 29, 2013

Employee Benefits and Share-based Compensation [Abstract]

Option Activity

Stock options activity during the nine months ended September 29, 2013, was as follows:



	Options Outstanding
	Number of shares		Weighted Average Exercise Price Per Share
	(in thousands)		(in dollars)
December 31, 2012	4,324		$	29.29
Granted	496		33.47
Exercised	(264	)	21.33
Cancelled and expired	(200	)	33.87
September 29, 2013	4,356		$	30.04

Schedule Of RSU Activity

RSU Activity

RSU activity during the nine months ended September 29, 2013, was as follows:



	RSUs Outstanding
	Number of shares		Weighted Average Grant Date Fair Value Per Share
	(in thousands)		(in dollars)
December 31, 2012	112		$	28.36
RSUs granted	716		29.10
RSUs vested	(85	)	26.86
RSUs cancelled	(12	)	28.14
September 29, 2013	731		$	29.27

Schedule Of Valuation And Expense Information

The following table sets forth the weighted average assumptions used to fair value option grants during the three and nine months ended September 29, 2013 and September 30, 2012:



	Three Months Ended				Nine Months Ended
	September 29, 2013		September 30, 2012		September 29, 2013		September 30, 2012
Expected life (in years)	4.4		4.4		4.4		4.4
Risk-free interest rate	1.14	%	0.48	%	0.71	%	0.64	%
Expected volatility	46.4	%	52.3	%	48.1	%	52.2	%
Dividend yield	—		—		—		—

Schedule Of Total Stock-Based Compensation Expense Resulting From Stock Options, Restricted Stock Awards, And The Employee Stock Purchase Plan

The following table sets forth the total stock-based compensation expense resulting from stock options, RSUs and the ESPP included in the Company’s unaudited condensed consolidated statements of operations (in thousands):



	Three Months Ended				Nine Months Ended
	September 29, 2013		September 30, 2012		September 29, 2013		September 30, 2012
Cost of revenue	$	479	$	473	$	1,074	$	1,021
Research and development	1,047		778		2,854		2,066
Sales and marketing	1,331		1,238		3,871		3,623
General and administrative	1,654		1,530		4,693		4,096
Total stock-based compensation	$	4,511	$	4,019	$	12,492	$	10,806