Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation Expense, Net of Estimated Forfeitures

Stock-based compensation expense, net of estimated forfeitures, related to the Company’s stock options, ESPP and RSUs by expense category was as follows:

	Three Months Ended				Six Months Ended
	June 30, 2013		July 1, 2012		June 30, 2013		July 1, 2012
	(In thousands)
Cost of revenues	$	2,237	$	3,003	$	5,112	$	6,515
Research and development		9,619		11,973		22,028		24,281
Selling, general and administrative		10,009		10,342		20,271		25,356
Total stock-based compensation expense	$	21,865	$	25,318	$	47,411	$	56,152

Summary of Weighted-Average Assumptions in Fair Value of Option Grant

The following table summarizes the weighted-average assumptions that the Company applied in the lattice model:

	Three Months Ended						Six Months Ended
	June 30, 2013			July 1, 2012			June 30, 2013			July 1, 2012
Estimated grant date fair value per share	$	2.29		$	2.64		$	2.33		$	2.86
Expected life (years)		4.47			4.52			4.38			4.46
Risk-free interest rate		1	%		1	%		1	%		1	%
Volatility		47	%		49	%		49	%		47	%

Summary of Changes in Stock Options Outstanding

The following table summarizes 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, 2012		56,042		$	5.75
Granted		6,331		$	6.89
Exercised		(4,511	)	$	3.16
Canceled		(1,808	)	$	7.90
Options outstanding at June 30, 2013		56,054		$	6.01		3.57	$	86,943
Options exercisable at June 30, 2013		38,018		$	5.88		2.48	$	66,893

Summary of Unvested Service-Based Restricted Stock

The following table summarizes changes in service-based RSUs outstanding:

	Number of Units			Weighted-Average Grant Date Fair Value per Share
	(In thousands)
Unvested service-based RSUs outstanding at December 31, 2012		17,655		$	6.99
Granted		7,950		$	6.92
Vested		(4,747	)	$	6.84
Forfeited		(673	)	$	6.81
Unvested service-based RSUs outstanding at June 30, 2013		20,185		$	7.01

Summary of Unvested Performance-Based Restricted Stock

The following table summarizes changes in performance-based RSUs outstanding:

	Number of Units			Weighted-Average Grant Date Fair Value per Share
	(In thousands)
Unvested performance-based RSUs outstanding at December 31, 2012		5,634		$	7.29
Granted		1,441		$	6.89
Vested		(3,167	)	$	7.41
Forfeited		(330	)	$	6.40
Unvested performance-based RSUs outstanding at June 30, 2013		3,578		$	7.11

Summary of Weighted-Average Assumptions in Fair Value of Option Grant

The following table summarizes the weighted-average assumptions that the Company applied in the calculation of the fair value for the May 2013 and May 2012 grants:

	Three Months Ended
	June 30, 2013			July 1, 2012
Estimated grant date fair value per share	$	1.88		$	2.19
Expected life (years)		0.8			0.8
Risk-free interest rate		0.11	%		0.17	%
Volatility		34	%		41	%