Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Reconciliation of Shares Used in Calculating Basic and Diluted Earnings Per Share

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
Net loss (in thousands)	$	(32,807)	$	(38,710)	$	(75,121)	$	(94,338)
Weighted average number of shares outstanding, basic and diluted	69,798,839		66,451,414		68,926,203		65,504,571
Net loss per share, basic and diluted	$	(0.47)	$	(0.58)	$	(1.09)	$	(1.44)

The anti-dilutive securities excluded from the shares used to calculate diluted net loss per share are as follows:

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

	As of September 30,
	2021	2020
Shares subject to outstanding common stock options and employee stock purchase plan	4,291,829	4,830,154
Restricted stock units	3,063,156	3,231,261
Conversion option of the 2024 Notes	5,961,186	5,961,186
	13,316,171	14,022,601