Employee Benefit Plans (Tables)

3 Months Ended

Apr. 01, 2012

Employee Benefits and Share-based Compensation [Abstract]

Schedule Of Stock Option Activity

Stock options activity under the stock option plans noted above during the three months ended April 1, 2012, was as follows:

	Options Outstanding
	Number of shares		Weighted Average Exercise Price Per Share
	(in thousands)		(in dollars)
December 31, 2011	3,950		$	27.03
Granted	180		39.60
Exercised	(203	)	21.55
Cancelled	(60	)	32.01
April 1, 2012	3,867		$	27.82

Schedule Of RSU Activity

RSU activity during the three months ended April 1, 2012, was as follows:

	RSUs Outstanding
	Number of shares		Weighted Average Exercise Price Per Share
	(in thousands)		(in dollars)
December 31, 2011	177		$	27.86
RSUs granted	2		40.01
RSUs vested	(43	)	19.13
RSUs cancelled	—		—
April 1, 2012	136		$	30.80

Schedule Of Valuation And Expense Information

Expected volatility is based on the historical volatility of the Company’s stock for the three months ended April 1, 2012 and April 3, 2011:

	Three Months Ended
	April 1, 2012		April 3, 2011
Expected life (in years)	4.3		4.4
Risk-free interest rate	0.58% - 0.91%		1.87	%
Expected volatility	52.5	%	49.9	%
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, restricted stock awards and the ESPP included in the Company’s Unaudited Condensed Consolidated Statements of Operations (in thousands):

	Three Months Ended
	April 1, 2012		April 3, 2011
Cost of revenue	$	270	$	235
Research and development	611		661
Sales and marketing	1,194		1,301
General and administrative	1,317		1,175
Total stock-based compensation	$	3,392	$	3,372