Stock-Based Compensation Expense (Tables)

3 Months Ended

Apr. 01, 2012

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

Stock-based compensation expense

	Three Months Ended
	April 1, 2012		April 3, 2011
	(In thousands)
Cost of revenues	$	3,512	$	1,813
Research and development		12,308		6,223
Selling, general and administrative		15,014		5,631
Total stock-based compensation expense	$	30,834	$	13,667

Changes in stock options outstanding

	Number of Shares			Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Term		Aggregate Intrinsic Value
	(In thousands)					(In years)		(In thousands)
Options outstanding at December 31, 2011		64,245		$	6.19
Assumed in SandForce acquisition		7,542		$	0.75
Granted		4,980		$	8.51
Exercised		(11,129	)	$	5.87
Canceled		(1,352	)	$	9.89
Options outstanding at April 1, 2012		64,286		$	5.71		4.27	$	198,711
Options exercisable at April 1, 2012		38,200		$	6.31		2.87	$	98,143

Unvested service-based restricted stock units

		$xxxxxxx			$xxxxxxx
	Number of Units			Weighted-Average Grant Date Fair Value per Share
	(In thousands)
Unvested service-based RSUs at December 31, 2011		12,085		$	5.94
Assumed in SandForce acquisition		1,576			6.17
Granted		6,438			8.42
Vested		(2,587	)		5.93
Forfeited		(300	)		6.14
Unvested service-based RSUs at April 1, 2012		17,212		$	6.89

Unvested performance-based restricted stock units

	Number of Units			Weighted-Average Grant Date Fair Value per Share
	(In thousands)
Unvested performance-based RSUs at December 31, 2011		4,729		$	5.98
Granted		2,942			8.53
Vested		(1,446	)		5.85
Forfeited		(467	)		6.23
Unvested performance-based RSUs at April 1, 2012		5,758		$	7.30

Employee Stock Option [Member]

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

Weighted-average assumptions used to determine the fair value of option grant

	Three Months Ended
	April 1, 2012			April 3, 2011
Estimated grant date fair value per share	$	2.86		$	2.08
Expected life (years)		4.46			4.45
Risk-free interest rate		1	%		2	%
Volatility		47	%		47	%