Net Loss Per Common Share (Tables)

12 Months Ended

Dec. 31, 2014

Net Loss Per Common Share

Schedule of anti-dilutive securities excluded from the calculation of diluted net loss per share

	December 31, 2014		December 31, 2013
Warrants for common stock		285,920		277,690
Common shares under option		1,729,586		1,401,101
Unvested restricted stock		9,551		16,703
Total potential dilutive shares		2,025,057		1,695,494