Net Income (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Net Income (Loss) Per Share

The following tables present the calculation of basic and diluted net loss per share attributable to common stockholders (in thousands, except share and per share data):

	Year Ended December 31,
	2018			2017			2016
				*As Adjusted			*As Adjusted
Numerator:
Net loss	$	(26,704	)	$	(116,846	)	$	(414,249	)
Denominator:
Weighted-average shares outstanding - basic and diluted	177,846,023			171,175,577			164,533,823
Net loss per share - basic and diluted	$	(0.15	)	$	(0.68	)	$	(2.52	)

 *As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for further details.

Summary of Potentially Dilutive Securities

Potentially dilutive securities that are not included in the calculation of diluted net loss per share because doing so would be antidilutive are as follows:

	Year Ended December 31,
	2018	2017	2016
Common stock options	1,810,580	3,369,732	5,818,435
Restricted stock units	10,201,660	11,403,341	12,222,282
ESPP obligations	317,940	361,688	366,529
2018 Notes	—	7,782,946	7,783,023
2018 Warrants	7,783,023	7,783,023	7,783,023
2022 Notes	5,806,933	5,806,933	—
2022 Warrants	5,806,933	5,806,933	—
Total potentially dilutive securities	31,727,069	42,314,596	33,973,292