Stock Based Compensation (Tables)

9 Months Ended

Oct. 26, 2014

Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]

Stock-based compensation expense, net of amounts capitalized as inventory



	Three Months Ended				Nine Months Ended
	October 26, 2014		October 27, 2013		October 26, 2014		October 27, 2013
	(In thousands)
Cost of revenue	$	3,021	$	3,090	$	8,596	$	7,911
Research and development	22,680		20,902		64,636		61,392
Sales, general and administrative	15,734		10,307		42,139		30,788
Total	$	41,435	$	34,299	$	115,371	$	100,091

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award



	Options Outstanding		Weighted Average Exercise Price
Stock Options	(In thousands)		(Per share)
Balances, January 26, 2014	32,504		$14.22
Granted	86		$18.66
Exercised	(7,945	)	$12.59
Cancelled	(1,361	)	$19.49
Balances, October 26, 2014	23,284		$14.48



	RSUs and PSUs Outstanding		Weighted Average Grant-Date Fair Value
RSUs and PSUs	(In thousands)		(Per share)
Balances, January 26, 2014	18,852		$13.82
Granted (1)	12,506		$17.63
Vested	(7,138	)	$13.75
Cancelled	(1,089	)	$14.21
Balances, October 26, 2014	23,131		$15.88

(1) Includes the total number of PSUs issuable if the maximum corporate financial performance target level for fiscal year 2015 is achieved. Depending on the actual level of achievement of the corporate performance goal at the end of fiscal year 2015, the range of PSUs issued could be from 1.3 million to 2.5 million shares. The PSUs were granted during the first quarter of fiscal year 2015 to our CEO and senior management as approved by our Compensation Committee.

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

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