Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Net loss per share was computed by dividing net loss by the weighted average number of common shares outstanding for the three and nine months ended September 30, 2017 and 2016:



	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Net loss	$	(18,709	)	$	(17,455	)	$	(62,144	)	$	(51,070	)
Weighted average shares – basic and diluted	83,463,153			79,303,380			80,177,370			70,437,885
Net loss per share – basic and diluted	$	(0.22	)	$	(0.22	)	$	(0.78	)	$	(0.73	)

Schedule of Securities Excluded from Calculation of Net Loss Per Share

The below outstanding securities were excluded from the above calculation of net loss per share because their impact under the "treasury stock method" and "if-converted method" would have been anti-dilutive due to our net loss per share in the three and nine months ended September 30, 2017 and 2016, as summarized below:



	Three Months Ended September 30,		Nine Months Ended September 30,
	2017	2016	2017	2016
2018 Convertible Notes	10,454,799	11,401,284	10,454,799	11,401,284
Common stock options	3,144,969	1,603,028	1,504,155	1,498,034
Restricted stock awards	2,025,661	2,609,533	2,025,661	2,609,533
Common stock warrants	111,441	—	32,833	1,674
Preferred stock*	—	—	—	—
Total	15,736,870	15,613,845	14,017,448	15,510,525

* In June 2016, our then 20 outstanding shares of Series E convertible voting preferred stock were converted (at the election of the preferred stockholders) into an aggregate of 40,000 common shares; a $6 thousand dividend in arrears was paid upon this conversion.