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Employee Benefit Plans (Tables)

6 Months Ended

Jun. 29, 2014

Employee Benefits and Share-based Compensation [Abstract]

Option Activity

Stock options activity during the six months ended June 29, 2014, was as follows:



	Number of shares		Weighted Average Exercise Price Per Share
	(in thousands)		(in dollars)
Outstanding at December 31, 2013	4,165		$	30.11
Granted	389		32.79
Exercised	(218	)	23.71
Cancelled	(59	)	35.77
Expired	(111	)	36.42
Outstanding at June 29, 2014	4,166		$	30.45

Schedule Of RSU Activity

RSU Activity

RSU activity during the six months ended June 29, 2014, was as follows:



	Number of shares		Weighted Average Grant Date Fair Value Per Share
	(in thousands)		(in dollars)
Outstanding at December 31, 2013	731		$	29.40
RSUs granted	433		33.11
RSUs vested	(178	)	30.05
RSUs cancelled	(31	)	29.15
Outstanding at June 29, 2014	955		$	30.89

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 six months ended June 29, 2014 and June 30, 2013:



	Three Months Ended				Six Months Ended
	June 29, 2014		June 30, 2013		June 29, 2014		June 30, 2013
Expected life (in years)	4.5		4.5		4.5		4.4
Risk-free interest rate	1.44	%	0.67	%	1.44	%	0.69	%
Expected volatility	42.6	%	47.3	%	42.6	%	48.2	%
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				Six Months Ended
	June 29, 2014		June 30, 2013		June 29, 2014		June 30, 2013
Cost of revenue	$	489	$	406	$	960	$	595
Research and development	1,227		1,135		2,623		1,807
Sales and marketing	1,401		1,310		3,350		2,540
General and administrative	1,817		1,540		3,131		3,039
Total stock-based compensation	$	4,934	$	4,391	$	10,064	$	7,981