Net Income (Loss) per Share (Tables)

6 Months Ended

Jun. 30, 2019

Schedule of Basic and Diluted Net Income Per Share Attributable to Common Stockholders

Basic and diluted net income (loss) per share attributable to common stockholders was calculated as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019			2018
Numerator:
Net income (loss) attributable to common stockholders, basic and diluted	$	1,291	$	21,417	$	(14,048	)	$	39,193
Denominator:
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, basic		83,884		83,257		83,605			82,447
Dilutive effect of stock options		2,455		10,333		—			11,023
Dilutive effect of restricted stock units		30		274		—			263
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders, diluted		86,369		93,864		83,605			93,733
Net income (loss) per share attributable to common stockholders:
Basic	$	0.02	$	0.26	$	(0.17	)	$	0.48
Diluted	$	0.01	$	0.23	$	(0.17	)	$	0.42

Schedule of Potential Common Shares Excluded from the Computation of Diluted Net Income Per Share Attributable to Common Stockholders

The following potential common shares, presented based on amounts outstanding at each period end, were excluded from the computation of diluted net income (loss) per share attributable to common stockholders for the periods presented because including them would have been anti-dilutive:

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Options to purchase common stock		4,212		512		8,649		512
Unvested restricted stock units		1,314		102		1,549		102