Net Income (Loss) Per Share

6 Months Ended

Sep. 30, 2011

Net Income (Loss) Per Share

Note 8. Net Income (Loss) Per Share

Basic net income (loss) per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is computed by dividing net income (loss) by the weighted-average number of dilutive common shares outstanding during the period. Diluted shares outstanding is calculated by adding to the weighted shares outstanding any potential dilutive securities outstanding for the period. Potential dilutive securities include stock options, restricted stock, restricted stock units, performance stock and shares to be purchased under the employee stock purchase plan. In periods when a net loss is reported, all common stock equivalents are excluded from the calculation because they would have an anti-dilutive effect, meaning the loss per share would be reduced. Therefore, in periods when a loss is reported basic and dilutive loss per share is the same.

	Three Months Ended September 30,					Six Months Ended September 30,
	2011		2010			2011			2010
Net income (loss)	$	601		(3,201	)	$	(3,993	)	$	(9,181	)
Weighted average shares used in computing basic net income per share		38,256		37,156			38,081			37,121
Net income (loss) per share—basic	$	0.02		(0.09	)	$	(0.10	)	$	(0.25	)
Net income (loss)	$	601		(3,201	)	$	(3,993	)		(9,181	)
Weighted average shares uses in computing basic net income per share		38,256		37,156			38,081		$	37,121
Effect of dilutive securities		1,110		—			—			—
Weighted average shares uses in computing diluted net income per share		39,366		37,156			38,081			37,121
Net income (loss) per share—diluted	$	0.02		(0.09	)	$	(0.10	)	$	(0.25	)

The calculation of diluted net income per share for the three months ended September 30, 2011 does not include securities totaling 1,656,241 because inclusion would have an antidilutive effect on net income per share. Excluded from the calculation of diluted weighted-average shares outstanding for the three months ending September 30, 2010 are underlying stock options of approximately 6,028,000 and unvested shares of restricted stock of approximately 653,000. Excluded from the calculation of diluted weighted-average shares outstanding for the six months ending September 30, 2011 and 2010 are underlying stock options of approximately 4,944,000 and 6,028,000 shares, respectively, and unvested shares of restricted stock and restricted stock units of approximately 869,000 shares and 653,000 shares, respectively.