Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Schedule of basic and diluted net loss per share

Basic and diluted net loss per share is calculated as follows (in thousands, except share and per share amounts):



	Three Months Ended March 31,
	2018			2017
Numerator:
Net loss	$	(61,555	)	$	(56,939	)

Denominator:
Weighted-average number of common shares used in loss per share - basic and diluted	44,937,776			43,185,952
Loss per share - basic and diluted	$	(1.37	)	$	(1.32	)

Schedule of potentially dilutive securities excluded from the computation of diluted weighted-average shares outstanding

The following potentially dilutive securities, prior to the use of the treasury stock method, have been excluded from the computation of diluted weighted-average shares outstanding, as they would be anti-dilutive. For the three months ended March 31, 2018 and 2017, respectively, all the Company’s options to purchase common stock, warrants, and restricted stock units outstanding were assumed to be anti-dilutive as earnings attributable to common stockholders was in a loss position.



	Three Months Ended March 31,
	2018	2017
Options to purchase common stock	5,886,348	6,968,155
Warrants	425,283	605,415
Restricted stock units	336,240	76,215