Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2013

Employee Benefits and Share-based Compensation [Abstract]

Schedule Of Stock Option Activity

Option Activity

Stock options activity during the six months ended June 30, 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	469		33.48
Exercised	(168	)	21.12
Cancelled and expired	(122	)	33.70
June 30, 2013	4,503		$	29.92

Schedule Of RSU Activity

RSU Activity

RSU activity during the six months ended June 30, 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	569		28.91
RSUs vested	(82	)	26.69
RSUs cancelled	(3	)	28.59
June 30, 2013	596		$	29.11

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 30, 2013 and July 1, 2012:

	Three Months Ended				Six Months Ended
	June 30, 2013		July 1, 2012		June 30, 2013		July 1, 2012
Expected life (in years)	4.5		4.4		4.4		4.4
Risk-free interest rate	0.67	%	0.68	%	0.69	%	0.67	%
Expected volatility	47.3	%	52.1	%	48.2	%	52.1	%
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 30, 2013		July 1, 2012		June 30, 2013		July 1, 2012
Cost of revenue	$	406	$	278	$	595	$	548
Research and development	1,135		677		1,807		1,288
Sales and marketing	1,310		1,191		2,540		2,385
General and administrative	1,540		1,249		3,039		2,566
Total stock-based compensation	$	4,391	$	3,395	$	7,981	$	6,787