Employee Benefit Plans (Tables)

3 Months Ended

Apr. 02, 2017

Employee Benefits and Share-based Compensation [Abstract]

Schedule Of Stock Option Activity

Option Activity

Stock option activity during the three months ended April 2, 2017 was as follows:

	Number of shares		Weighted Average Exercise Price Per Share
	(In thousands)		(In dollars)
Outstanding at December 31, 2016	1,884		$	31.14
Granted	—		—
Exercised	(83	)	29.35
Cancelled	—		—
Expired	—		—
Outstanding at April 2, 2017	1,801		$	31.23

Schedule Of RSU Activity

RSU Activity

RSU activity during the three months ended April 2, 2017 was as follows:

	Number of shares		Weighted Average Grant Date Fair Value Per Share
	(In thousands)		(In dollars)
Outstanding at December 31, 2016	996		$	36.22
Granted	59		57.00
Vested	(106	)	37.64
Cancelled	(14	)	44.34
Outstanding at April 2, 2017	935		$	37.25

Schedule Of Valuation And Expense Information

The table below sets forth the weighted average assumptions used to estimate the fair value of option grants and purchase rights granted under the ESPP during the three months ended April 2, 2017 and April 3, 2016.

	Three Months Ended
	Stock Options		ESPP
	April 2, 2017	April 3, 2016	April 2, 2017	April 3, 2016
Expected life (in years)	N/A	4.4	0.5	0.5
Risk-free interest rate	N/A	1.28%	0.66%	0.42%
Expected volatility	N/A	35.4%	27.6%	44.7%
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:

	Three Months Ended
	April 2, 2017		April 3, 2016
	(In thousands)
Cost of revenue	$	436	$	439
Research and development	1,319		866
Sales and marketing	1,247		1,197
General and administrative	2,126		1,909
Total stock-based compensation	$	5,128	$	4,411