Stockholders' Equity (Tables)

12 Months Ended

Jan. 31, 2012


	Shares Available for Grant			Options Outstanding
	Shares Available for Grant			Outstanding Stock Options			Weighted- Average Exercise Price		Aggregate Intrinsic Value (in thousands)
Balance as of January 31, 2011		4,095,460			11,783,159		$	65.35
Increase in shares authorized/assumed:
2004 Equity Incentive Plan		3,500,000			0			0.00
2006 Equity Inducement Plan		400,000			0			0.00
Radian6 Technologies Inc. Stock Option Plan		239,519			0			0.00
Assistly Option Plan		49,379			0			0.00
Model Metrics Inc. 2008 Stock Option Plan		23,463			0			0.00
Options granted under all plans		(2,608,917	)		2,608,917			112.31
Restricted stock activity		(2,879,321	)		0			0.00
Stock grants to board and advisory board members		(39,525	)		0			0.00
Exercised		0			(2,483,372	)		42.87
1999 Plan shares expired		(62,862	)		0			0.00
Cancelled		723,797			(723,797	)		88.86

Balance as of January 31, 2012		3,440,993			11,184,907		$	79.78	$	489,693

Vested or expected to vest					10,876,574		$	78.91	$	484,159

Exercisable as of January 31, 2012					4,992,175		$	54.02	$	329,956

Schedule Of Stock Options Outstanding


	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted-Average Remaining Contractual Life (Years)		Weighted- Average Exercise Price		Number of Shares		Weighted- Average Exercise Price
$1.10 to $25.19		988,852		3.0	$	10.68		844,122	$	10.56
$25.97		1,680,032		1.8		25.97		1,118,968		25.97
$27.40 to $63.98		1,600,636		1.4		50.34		1,361,588		50.58
$65.41 to $65.44		1,815,556		2.8		65.44		754,609		65.44
$65.68 to $108.25		1,816,238		4.2		99.06		219,855		73.04
$111.86 to $140.28		860,994		4.5		128.89		87,586		127.05
$142.50 to $151.75		2,422,599		3.9		143.57		605,447		142.50

		11,184,907		3.1	$	79.78		4,992,175	$	54.02

Schedule Of Restricted Stock Activity


	Restricted Stock Outstanding
	Outstanding			Weighted- Average Exercise Price		Aggregate Intrinsic Value (in thousands)
Balance as of January 31, 2010		2,316,452			0.001
Granted		2,048,925			0.001
Cancelled		(223,220	)		0.001
Vested and converted to shares		(926,054	)		0.001

Balance as of January 31, 2011		3,216,103		$	0.001
Granted		3,207,805			0.001
Cancelled		(288,959	)		0.001
Vested and converted to shares		(1,172,686	)		0.001

Balance as of January 31, 2012		4,962,263		$	0.001	$	579,592

Expected to vest		4,811,402				$	561,972

Schedule Of Shares Of Common Stock Available For Future Issuance Under Stock Option Plans


Options outstanding			11,184,907
Restricted stock awards and units outstanding			4,962,263
Stock available for future grant:
2004 Equity Incentive Plan			2,543,316
2006 Inducement Equity Incentive Plan			323,477
2004 Employee Stock Purchase Plan			1,000,000
2004 Outside Directors Stock Plan			574,200
0.75% Convertible senior notes			6,734,664
Warrants			6,735,953

			34,058,780

- 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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- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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