v2.4.0.6

Common Stock and Stockholders Equity (Deficit) (Tables)

9 Months Ended

Oct. 31, 2012

Common Stock and Stockholders' Equity (Deficit) [Abstract]

Summary of the combined activity under the 2005 Stock Plan and the EIP

The combined activity under the 2005 Stock Plan and the EIP is as follows:

						Options Outstanding
		Shares Available for Grant				Outstanding Stock Options				Weighted- Average Exercise Price				Aggregate Intrinsic Value
														(in thousands)
Balance as of January 31, 2012			5,443,075				29,211,475				1.55			$	98,241
New shares authorized under the 2005 Stock Plan			15,000,000				—				—
New shares authorized at adoption of the EIP			25,000,000				—				—
Stock option grants			(5,329,200	)			5,329,200				8.35
Restricted stock awards granted			(1,240,000	)
Stock options exercised			—				(4,426,380	)			2.28
Stock options canceled			327,725				(327,725	)			3.85
Balance as of October 31, 2012			39,201,600				29,786,570				2.64			$	1,366,115

X

- Details

Name:	us-gaap_EquityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration