Employee Benefit Plans (Tables)

9 Months Ended

Sep. 28, 2014

Employee Benefits and Share-based Compensation [Abstract]

Schedule Of Stock Option Activity

Option Activity

Stock option activity during the nine months ended September 28, 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	(255	)	23.67
Cancelled	(67	)	35.43
Expired	(129	)	36.58
Outstanding at September 28, 2014	4,103		$	30.47

Schedule Of RSU Activity

RSU Activity

RSU activity during the nine months ended September 28, 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	445		33.14
RSUs vested	(188	)	30.17
RSUs cancelled	(44	)	29.34
Outstanding at September 28, 2014	944		$	30.92

Schedule Of Valuation And Expense Information

The following table sets forth the weighted average assumptions used to estimate the fair value of option grants during the three and nine months ended September 28, 2014 and September 29, 2013:

	Three Months Ended			Nine Months Ended
	September 28, 2014	September 29, 2013		September 28, 2014		September 29, 2013
Expected life (in years)	N/A	4.4		4.5		4.4
Risk-free interest rate	N/A	1.14	%	1.44	%	0.71	%
Expected volatility	N/A	46.4	%	42.6	%	48.1	%
Dividend yield	N/A	—		—		—

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 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 28, 2014		September 29, 2013		September 28, 2014		September 29, 2013
Cost of revenue	$	573	$	479	$	1,533	$	1,074
Research and development	1,255		1,047		3,878		2,854
Sales and marketing	1,409		1,331		4,759		3,871
General and administrative	1,925		1,654		5,056		4,693
Total stock-based compensation	$	5,162	$	4,511	$	15,226	$	12,492