Net Loss Per Common Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Schedule of Potentially Dilutive Securities Excluded from Computation of Diluted Weighted Average Shares

The potential dilutive effect of these securities is shown in the chart below:

	As of March 31,
(in thousands)	2015		2014
Options to purchase common stock		20,285		22,243
Common stock warrants		741		2,443
Conversion premium on the Notes		25,000		25,000