Net Loss per Share (Tables)

3 Months Ended

Mar. 31, 2019

Schedule of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders

Basic and diluted net loss per share attributable to common stockholders was calculated as follows for the three months ended March 31, 2019 and 2018:

	For the three months ended March 31,
(In thousands, except per share amounts)	2019			2018
Numerator:
Net loss	$	(41,538	)	$	(41,569	)
Net loss:	$	(41,538	)	$	(41,569	)
Denominator:
Weighted average common shares outstanding, basic and diluted		37,992			37,620
Net loss per share, basic and diluted	$	(1.09	)	$	(1.10	)

Schedule of Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share, as Including them Would have Anti-dilutive Effect

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 March 31,
	2019		2018
Shares issuable upon conversion of the 2024 Convertible Notes		7,515		7,515
Stock options		4,770		4,264
Restricted stock units		471		218
Total		12,756		11,997