Net Profit Per Share

9 Months Ended

Sep. 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, RSU, MSU 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, September 30,					Nine Months Ended, September 30,
	2013		2012			2013		2012
Numerator:
Net income (loss)	$	34,537	$	(344	)	$	21,874	$	49,132
Denominator:
Weighted-average common shares outstanding, basic	79,967		81,437			80,592		80,356
Dilutive effect of potential common stock	1,881		—			1,957		2,660
Total shares, diluted	81,848		81,437			82,549		83,016
Net income (loss) per share, basic	$	0.43	$	(0.00	)	$	0.27	$	0.61
Net income (loss) per share, diluted	$	0.42	$	(0.00	)	$	0.26	$	0.59

For the three and nine months ended September 30, 2013, the anti-dilutive affect from RSU were not material.

For the three months ended September 30, 2012 , stock options, RSU, MSU and ESPP totaling 2.5 million of potentially dilutive shares have been excluded from the total diluted shares because there was a net loss during the period.

For the three and nine months ended September 30, 2012, the anti-dilutive affect from stock options and RSU were not material.