Net Income (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2019

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 income (loss) per share attributable to common stockholders (in thousands, except per share data):

	Year Ended December 31,
	2019		2018			2017
Numerator:
Net income (loss)	$	626,698	$	(26,704	)	$	(116,846	)
Denominator:
Weighted-average shares outstanding - basic	186,466		177,846			171,176
Weighted-average effect of potentially dilutive securities:
Common stock options	1,109		—			—
RSUs	4,897		—			—
2018 Warrants	842		—			—
In-the-money portion of 2022 Notes	2,737		—			—
2022 Warrants	1,172		—			—
Weighted-average shares outstanding - diluted	197,223		177,846			171,176
Net income (loss) per share - basic	$	3.36	$	(0.15	)	$	(0.68	)
Net income (loss) per share - diluted	$	3.18	$	(0.15	)	$	(0.68	)

Summary of Potentially Dilutive Securities

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

	Year Ended December 31,
	2019	2018	2017
Common stock options	161	1,811	3,370
Restricted stock units	413	10,202	11,403
ESPP obligations	273	318	362
2018 Notes	—	—	7,783
2018 Warrants	—	7,783	7,783
2022 Notes	—	5,807	5,807
2022 Warrants	—	5,807	5,807
Total potentially dilutive securities	847	31,728	42,315