Stock-Based Compensation Expense (Tables)

6 Months Ended

Jul. 01, 2012

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

Stock-based compensation expense

	Three Months Ended				Six Months Ended
	July 1, 2012		July 3, 2011		July 1, 2012		July 3, 2011
	(In thousands)
Cost of revenues	$	3,003	$	2,051	$	6,515	$	3,864
Research and development		11,973		6,653		24,281		12,876
Selling, general and administrative		10,342		4,948		25,356		10,579
Total stock-based compensation expense	$	25,318	$	13,652	$	56,152	$	27,319

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		5,033		$	8.50
Exercised		(11,942	)	$	5.69
Canceled		(2,757	)	$	9.32
Options outstanding at July 1, 2012		62,121		$	5.67		4.09	$	91,608
Options exercisable at July 1, 2012		37,288		$	6.15		2.81	$	43,806

Unvested service-based restricted stock

	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		7,012		$	8.32
Vested		(3,035	)	$	5.90
Forfeited		(464	)	$	6.32
Unvested service-based RSUs at July 1, 2012		17,174		$	6.93

Unvested performance-based restricted stock

	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		2,986		$	8.52
Vested		(1,446	)	$	5.85
Forfeited		(535	)	$	6.41
Unvested performance-based RSUs at July 1, 2012		5,734		$	7.30

Employee Stock Option [Member]

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

Weighted average assumptions in fair value of option grant

	Three Months Ended						Six Months Ended
	July 1, 2012			July 3, 2011			July 1, 2012			July 3, 2011
Estimated grant date fair value per share	$	2.64		$	2.65		$	2.86		$	2.14
Expected life (years)		4.52			5.01			4.46			4.51
Risk-free interest rate		1	%		2	%		1	%		2	%
Volatility		49	%		47	%		47	%		47	%

Employee Stock Purchase Plan [Member]

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

Weighted average assumptions in fair value of option grant

	Three Months Ended
	July 1, 2012			July 3, 2011
Estimated grant date fair value per share	$	2.19		$	2.10
Expected life (years)		0.8			0.8
Risk-free interest rate		0.17	%		0.02	%
Volatility		41	%		37	%