Net Loss Per Common Share (Tables)

3 Months Ended

Mar. 31, 2017

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 months ended March 31, 2017 and 2016 are shown in the chart below:

	Three Months Ended March 31,
(in thousands)	2017		2016
Outstanding options to purchase common stock		16,523		21,647
Conversion of the Convertible Notes		12,158		25,000