Net Profit Per Share

6 Months Ended

Jun. 30, 2013

Net Profit Per Share

Net Income (Loss) Per Share

Basic net income (loss) per share is computed using the weighted average number of shares of common stock outstanding during the period. Diluted net income per share is computed using the weighted average number of shares of common stock, adjusted for the dilutive effect of potential common stock. Potential common stock, computed using the treasury stock method, includes stock options, RSUs, MSUs and ESPP.

The following table sets forth the computation of basic and diluted net income (loss) per share attributable to common stock (in thousands, except per share amounts):

	Three Months Ended, June 30,				Six Months Ended, June 30,
	2013		2012		2013			2012
Numerator:
Net income (loss)	$	29,320	$	28,492	$	(12,663	)	$	49,476
Denominator:
Weighted-average common shares outstanding, basic	80,576		80,384		80,909			79,810
Dilutive effect of potential common stock	1,573		2,570		—			2,636
Total shares, diluted	82,149		82,954		80,909			82,446
Net income (loss) per share, basic	$	0.36	$	0.35	$	(0.16	)	$	0.62
Net income (loss) per share, diluted	$	0.36	$	0.34	$	(0.16	)	$	0.60

For the six months ended June 30, 2013, stock options, RSUs, MSUs and ESPP totaling 1.8 million of potentially dilutive shares have been excluded from the total diluted shares because there was a net loss during the period. The anti-dilutive affect from stock options during the three months ended June 30, 2013 were not material.

For the three and six months ended June 30, 2012, stock options, RSUs and MSUs totaling 0.1 million for each period were excluded from diluted net income per share because of their anti-dilutive effect.