Net Income per Share

Basic net income 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 any dilutive effect of potential common stock. Potential common stock, computed using the treasury stock method, includes RSUs, MSUs, stock options and our ESPP.

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



	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Numerator:
Net income	$	106,105	$	69,179	$	201,971	$	138,599
Denominator:
Weighted-average common shares outstanding, basic	80,216		80,188		80,127		80,047
Dilutive effect of potential common stock	1,255		1,443		1,448		1,621
Total shares, diluted	81,471		81,631		81,575		81,668

Net income per share, basic	$	1.32	$	0.86	$	2.52	$	1.73
Net income per share, diluted	$	1.30	$	0.85	$	2.48	$	1.70

For the three and six months ended June 30, 2018 and 2017, potentially anti-dilutive shares excluded from diluted net income per share related to RSUs, MSUs, stock options and ESPP were not material.