Net Loss Per Share (Tables)

9 Months Ended

Oct. 31, 2013

Earnings Per Share [Abstract]

Schedule of computation of historical basic and diluted net loss per share

The following table sets forth the computation of historical basic and diluted net loss per share (in thousands, except per share data):

	Three Months Ended October 31,						Nine Months Ended October 31,
	2013			2012			2013			2012
Numerator:
Net loss	$	(16,550	)	$	(5,474	)	$	(46,377	)	$	(30,519	)
Denominator:
Weighted-average common shares outstanding	106,079			96,786			104,144			74,210
Less: Weighted-average unvested common shares subject to repurchase or forfeiture	(71		)	(115		)	(81		)	(259		)
Weighted-average shares used to compute net loss per share, basic and diluted	106,008			96,671			104,063			73,951
Net loss per share, basic and diluted	$	(0.16	)	$	(0.06	)	$	(0.45	)	$	(0.41	)

Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive

Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows (in thousands):

	As of October 31,
	2013	2012
Shares subject to outstanding common stock options	13,191	22,190
Shares subject to outstanding RSUs	4,316	399
Employee stock purchase plan	296	623
Shares subject to common stock warrants	—	405
Total	17,803	23,617