Loss Per Share Applicable to Common Stockholders

6 Months Ended

Oct. 31, 2012

Loss Per Share Applicable to Common Stockholders [Abstract]

Loss Per Share Applicable to Common Stockholders

7. Loss Per Share Applicable to Common Stockholders

The following table sets forth the computations of loss per share applicable to common stockholders for the three and six months ended October 31, 2012 and 2011, respectively (in thousands, except per share data).

	Three Months Ended October 31,						Six Months Ended October 31,
	2012			2011			2012			2011
Net loss	$	(11,242	)	$	(5,851	)	$	(29,781	)	$	(11,387	)
Less accretion of redeemable convertible preferred stock		—			(12	)		—			(25	)
Loss applicable to common stockholders	$	(11,242	)	$	(5,863	)	$	(29,781	)	$	(11,412	)
Loss per share, basic and diluted	$	(0.16	)	$	(0.30	)	$	(0.45	)	$	(0.60	)
Weighted average number of shares outstanding, basic and diluted		69,846			19,421			66,203			19,119
Potentially dilutive securities (1):
Outstanding stock options		7,299			5,583			7,828			5,057
Redeemable convertible preferred shares		—			—			—			27,897

(1) The impact of potentially dilutive securities on earnings per share is anti-dilutive in a period of net loss.