Net Loss per Share

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Net Loss per Share

11. Net Loss per Share

Basic and diluted net loss per share attributable to common stockholders was calculated as follows for the three and six months ended June 30, 2019 and 2018:

	For the three months ended June 30,						For the six months ended June 30,
(In thousands, except per share amounts)	2019			2018			2019			2018
Numerator:
Net loss	$	(36,487	)	$	(43,875	)	$	(78,025	)	$	(85,444	)
Net loss:	$	(36,487	)	$	(43,875	)	$	(78,025	)	$	(85,444	)
Denominator:
Weighted average common shares    outstanding, basic and diluted		38,010			37,697			38,001			37,659
Net loss per share, basic and diluted	$	(0.96	)	$	(1.16	)	$	(2.05	)	$	(2.27	)

The following common stock equivalents were excluded from the calculation of diluted net loss per share for the periods indicated as including them would have an anti-dilutive effect:

	For the three months ended June 30,				For the six months ended June 30,
	2019		2018		2019		2018
Shares issuable upon conversion of the    2024 Convertible Notes		7,515		7,515		7,515		7,515
Stock options		5,104		4,467		4,938		4,366
Restricted stock units		963		291		718		255
Total		13,582		12,273		13,171		12,136