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Stock-Based Employee Compensation (Tables)

12 Months Ended

Mar. 30, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

The following table summarizes stock-based compensation expense by line items appearing in the Company’s Consolidated Statement of Operations:



	Fiscal Year Ended
(in thousands)	March 30, 2014		March 31, 2013		April 1, 2012
Cost of revenue	$	1,189	$	1,113	$	1,784
Research and development	5,601		6,692		8,566
Selling, general and administrative	5,887		5,250		5,983
Discontinued operations	675		217		400
Total stock-based compensation expense	$	13,352	$	13,272	$	16,733

Valuation Assumptions

These variables include, but are not limited to, the Company’s expected stock price volatility over the term of the awards, as well as the expected term of the awards.



	Fiscal Year Ended
	March 30, 2014			March 31, 2013			April 1, 2012
Stock option plans:
Expected term	4.60 years			4.64 years			4.31 years
Risk-free interest rate	0.95		%	0.73		%	1.33		%
Volatility	40.1		%	45.0		%	43.5		%
Dividend yield	—		%	—		%	—		%
Weighted-average grant-date fair value	$	2.99		$	2.18		$	2.86
ESPP:
Expected term	0.25 years			0.25 years			0.25 years
Risk-free interest rate	0.06		%	0.08		%	0.03		%
Volatility	35.5		%	35.0		%	47.7		%
Dividend yield	—		%	—		%	—		%
Weighted-average grant-date fair value	$	1.89		$	1.42		$	1.53

Stock Option activities

The following is a summary of the Company's stock option activity and related weighted average exercise prices for each category:



	Fiscal 2014
(shares in thousands)	Shares		Price
Beginning stock options outstanding	12,817		$	7.12
Granted	1,946		8.67
Exercised (1)	(5,766	)	6.48
Canceled	(3,395	)	8.95
Ending stock options outstanding	5,602		$	7.21
Ending stock options exercisable	3,210		$	6.99


(1)	Upon exercise, the Company issues new shares of common stock.

Summary of information about stock options outstanding

The following is a summary of information about stock options outstanding at March 30, 2014:



	Options Outstanding			Options Exercisable
Range of Exercise Prices	Number Outstanding (in thousands)	Weighted-Average Remaining Contractual Life (in years)	Weighted-Average Exercise Price	Number Exercisable (in thousands)	Weighted-Average Exercise Price
4.84 - 5.33	653	3.50	$5.18	449	$5.13
5.40-5.75	654	3.58	5.71	542	5.72
5.77 - 5.77	969	5.10	5.77	348	5.77
5.79-6.00	752	2.08	5.93	707	5.93
6.04-7.24	358	3.93	6.75	233	6.69
7.67-7.67	626	6.13	7.67	—	—
7.81-8.22	106	2.47	8.02	87	8.06
8.49-8.49	809	4.06	8.49	518	8.49
8.69-12.51	583	4.84	11.82	233	11.86
14.15-16.26	92	0.13	15.01	93	15.01
	5,602	4.06	$7.21	3,210	$6.99

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes the Company’s restricted stock unit activity and related weighted-average exercise prices for each category:



	Fiscal 2014
(shares in thousands)	Shares		Weighted- Average Grant Date Fair Value Per Share
Beginning RSUs outstanding	2,591		$	6.26
Granted	2,123		8.17
Released	(901	)	6.26
Forfeited	(889	)	6.98
Ending RSUs outstanding	2,924		$	7.43

Schedule of Nonvested Performance-based Units Activity

The following table summarizes the Company’s performance stock unit activity and related weighted-average exercise prices for each category:



	Fiscal 2014
(shares in thousands)	Shares		Weighted- Average Grant Date Fair Value Per Share
Beginning PSUs outstanding	744		$	7.50
Granted	491		8.46
Released	—		—
Forfeited	(431	)	8.04
Ending PSUs outstanding	804		$	7.79

Summary of ESPP Activity

Activity under the Company’s ESPP is summarized in the following table:



(in thousands, except per share amounts)	Fiscal 2014		Fiscal 2013		Fiscal 2012
Number of shares issued	1,206		1,679		2,351
Average issuance price	$	7.23	$	5.13	$	4.83
Number of shares available at year-end	5,019		1,226		2,905