Net Income (Loss) Per Share (Tables)

9 Months Ended

Oct. 31, 2011

Computation of Basic and Diluted Net Loss Per Share

The following provides the computation of basic and diluted net loss per share:

	Three months ended October 31,				Nine months ended October 31,
	2011		2010		2011		2010
Net income (loss)	$	24,071	$	15,257	$	26,052	$	(22,015	)
Weighted average common shares used to calculate basic net income (loss) per share		109,501		109,364		110,423		106,942
Employee stock options, restricted stock units and employee stock purchase plan		2,062		2,775		2,758		—
Weighted average common and potential common shares used to calculate diluted net income (loss) per share		111,563		112,139		113,181		106,942
Basic net income (loss) per share	$	0.22	$	0.14	$	0.24	$	(0.21	)
Diluted net income (loss) per share	$	0.22	$	0.14	$	0.23	$	(0.21	)