Stock-Based Compensation Plans (Tables)

3 Months Ended

Jun. 30, 2012

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-Based compensation expense

The following table summarizes stock-based compensation expense related to stock awards granted under the Company’s equity incentive plans and rights to acquire stock granted under the Company’s Employee Stock Purchase Plan:

	Three Months Ended
(In thousands)	June 30, 2012		July 2, 2011
Stock-based compensation included in:
Cost of revenues	$	1,728	$	1,310
Research and development	8,623		6,487
Selling, general and administrative	7,257		5,970
	$	17,608	$	13,767

Summary of option plans activity

The weighted-average fair values per share of stock options granted during the first quarter of fiscal 2012 was $7.80 which were estimated at the date of grant using the following weighted-average assumptions:

Expected life of options (years)	5.1
Expected stock price volatility	0.30
Risk-free interest rate	1.8	%
Dividend yield	2.2	%

Summary of restricted stock unit activity and related information

The per share weighted-average fair values of RSUs granted during the first quarter of fiscal 2013 was $31.35 ($31.75 for the first quarter of fiscal 2012), which were calculated based on estimates at the date of grant using the following weighted-average assumptions:

	Three Months Ended
	June 30, 2012		July 2, 2011
Risk-free interest rate	0.4	%	1.0	%
Dividend yield	2.6	%	2.3	%

Employee Stock Option [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Weighted-average assumptions in estimation of fair value of employee purchase plan

A summary of the Company’s option plans activity and related information is as follows:

	Options Outstanding
(Shares in thousands)	Number of Shares		Weighted-Average Exercise Price Per Share
April 2, 2011	24,969		$	29.11
Granted	207		$	34.79
Exercised	(3,622	)	$	24.70
Forfeited/cancelled/expired	(3,766	)	$	37.35
March 31, 2012	17,788		$	28.32
Granted	—		$	—
Exercised	(362	)	$	24.14
Forfeited/cancelled/expired	(1,112	)	$	41.79
June 30, 2012	16,314		$	27.50
Options exercisable at:
June 30, 2012	14,264		$	27.76
March 31, 2012	15,349		$	28.78

Weighted-average assumptions in estimation of fair value of stock options

A summary of the Company’s RSU activity and related information is as follows:

	RSUs Outstanding
(Shares in thousands)	Number of Shares		Weighted-Average Grant-Date Fair Value Per Share
April 2, 2011	4,215		$	23.19
Granted	2,977		$	33.69
Vested	(1,543	)	$	23.11
Cancelled	(410	)	$	25.18
March 31, 2012	5,239		$	29.01
Granted	56		$	31.35
Vested	(81	)	$	27.47
Cancelled	(78	)	$	27.60
June 30, 2012	5,136		$	29.06