Stock-Based Compensation (Tables)

9 Months Ended

Jan. 01, 2012

Stock-Based Compensation [Abstract]

Compensation Expense

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

	Three Months Ended				Nine Months Ended
(in thousands)	Jan. 1, 2012		Jan. 2, 2011		Jan. 1, 2012		Jan. 2, 2011
Cost of revenue	$	535	$	370	$	1,415	$	1,260
Research and development		2,174		2,400		6,493		6,746
Selling, general and administrative		1,603		1,237		4,458		3,765
Discontinued operations		113		506		208		1,436
Total stock-based compensation expense	$	4,425	$	4,513	$	12,574	$	13,207

Valuation Assumptions

Assumptions used in the Black-Scholes valuation model and resulting weighted average grant-date fair values were as follows:

	Three Months Ended						Nine Months Ended
	Jan. 1, 2012			Jan. 2, 2011			Jan. 1, 2012			Jan. 2, 2011
Stock option plans:
Expected Term (in years)		4.3			4.6			4.3			4.6
Risk-free interest rate		0.8	%		1.5	%		1.4	%		2.0	%
Volatility		48.3	%		39.2	%		43.4	%		41.5	%
Dividend Yield		0.0	%		0.0	%		0.0	%		0.0	%
Weighted average grant-date fair value	$	2.18		$	2.17		$	2.88		$	2.16
ESPP:
Expected Term (in years)		0.24			0.25			0.25			0.25
Risk-free interest rate		0.2	%		0.2	%		0.3	%		0.2	%
Volatility		59.1	%		32.1	%		52.6	%		40.9	%
Dividend Yield		0.0	%		0.0	%		0.0	%		0.0	%
Weighted average fair value	$	1.37		$	1.23		$	1.66		$	1.33

Stock Option activities

The following table summarizes the Company's stock option activities for the nine months ended January 1, 2012:

(in thousands, except per share data)	Shares			Weighted Average Exercise Price
Options outstanding as of April 3, 2011		17,814		$	8.49
Granted		3,909			7.93
Exercised		(466	)		5.55
Canceled, forfeited or expired		(2,339	)		9.75
Options outstanding as of January 1, 2012		18,918		$	8.29
Options exercisable at January 1, 2012		11,508		$	9.16

The following table summarizes the Company's restricted stock unit activities for the nine months ended January 1, 2012:

(in thousands, except per share data)	Shares			Weighted Grant Date Fair Value
RSU's outstanding as of April 3, 2011		2,342		$	6.70
Granted		1,125			7.96
Released		(732	)		7.72
Forfeited		(319	)		6.82
RSU's outstanding as of  Janaury 1, 2012		2,416		$	6.97