Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Basic and diluted net loss per share

The following table presents the computation of basic and diluted loss per share (in thousands, except per share amounts):

	Year Ended December 31,
	2020		2019		2018
Numerator
Net loss	$	(209,383)	$	(419,503)	$	(123,914)
Denominator
Weighted average common shares outstanding, basic and diluted	53,706		43,078		37,884
Net loss per share, basic and diluted	$	(3.90)	$	(9.74)	$	(3.27)

Schedule of antidilutive securities excluded from computation of diluted net loss per share

The following table presents the potential common shares outstanding that were excluded from the computation of diluted loss per share of common stock for the periods presented because including them would have been antidilutive:

	Year Ended December 31,
(In thousands)	2020	2019	2018
Shares subject to outstanding common stock options	4,966	4,085	3,770
Shares subject to outstanding restricted stock units	464	382	289
Shares subject to outstanding warrants to purchase common stock	28	28	33
Shares issuable upon conversion of Convertible Senior Notes	4,415	—	—
Total	9,873	4,495	4,092