Earnings/(Loss) per Common Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Schedule of antidilutive securities excluded from computation of earnings (loss) per share

The table below presents the weighted-average number of antidilutive potential common shares that are not considered in the calculation of diluted loss per share:

	Three Months Ended
	March 31, 2018	March 31, 2017
Series B Convertible Preferred Stock	8,494,733	33,240,261
Common share warrants	1,642,409	3,145,575
Employee stock options	5,347,188	6,217,966
Restricted stock units	611,927	565,093
	16,096,257	43,168,895