Net Income (Loss) Per Common Share

12 Months Ended

Jul. 31, 2011

Net Income (Loss) Per Common Share [Abstract]

Net Income (Loss) Per Common Share

4.   Net Income (Loss) Per Common Share

Basic net income (loss) per common share is calculated by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per common share is calculated by giving effect to all potentially dilutive common shares, including stock options and awards, unless the result is anti-dilutive. The following tables set forth the computation of net income (loss) per share:

	Years Ended July 31,
	2011		2010			2009
	(In thousands, except per share data)
Net income (loss)	$	70,688	$	(33,998	)	$	(23,413	)
Weighted-average common shares outstanding — basic		100,299		89,978			84,612
Dilutive effect of employee stock plans		16,818		—			—
Weighted-average common shares outstanding — diluted		117,117		89,978			84,612
Net income (loss) per share — basic	$	0.70	$	(0.38	)	$	(0.28	)
Net income (loss) per share — diluted	$	0.60	$	(0.38	)	$	(0.28	)

The following outstanding options and restricted stock awards were excluded from the computation of diluted net income (loss) per common share for the periods presented because including them would have had an anti-dilutive effect

	Years Ended July 31,
	2011		2010		2009
	(In thousands)
Options to purchase common stock		1,279		4,072		8,212
Restricted stock awards		227		175		860