Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2013

Employee Benefits and Share-based Compensation [Abstract]

Schedule Of Stock Option Activity

Stock options activity during the three months ended March 31, 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	138		36.80
Exercised	(108	)	23.64
Cancelled and expired	(59	)	33.54
March 31, 2013	4,295		$	29.62

Schedule Of RSU Activity

RSU activity during the three months ended March 31, 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	1		36.80
RSUs vested	(20	)	11.41
RSUs cancelled	(1	)	38.16
March 31, 2013	92		$	32.11

Schedule Of Valuation And Expense Information

The following table sets forth the weighted-average assumptions used to fair value option grants during the three months ended March 31, 2013 and April 1, 2012 based on its historical experience.

	Three Months Ended
	March 31, 2013		April 1, 2012
Expected life (in years)	4.4		4.3
Risk-free interest rate	0.74	%	0.65	%
Expected volatility	50.3	%	52.5	%
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
	March 31, 2013		April 1, 2012
Cost of revenue	$	189	$	270
Research and development	672		611
Sales and marketing	1,230		1,194
General and administrative	1,499		1,317
Total stock-based compensation	$	3,590	$	3,392