Net Loss Per Common Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Schedule of Outstanding Securities Excluded from Computation of Diluted Loss Per Share

Outstanding securities excluded from the calculation of diluted loss per share for the three and six months ended June 30, 2016 and 2015 are shown in the chart below:

	Three and Six Months Ended June 30,
(in thousands)	2016		2015
Outstanding options to purchase common stock		21,647		19,426
Common stock warrants		—		377
Conversion of the Convertible Notes		12,158		25,000