Net Loss Per Share (Details)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Anti-dilutive securities
Potentially dilutive common shares that have not been included in the net loss per common share calculations because the effect would have been anti-dilutive	5,017,603	4,316,897
Stock options
Anti-dilutive securities
Potentially dilutive common shares that have not been included in the net loss per common share calculations because the effect would have been anti-dilutive	5,005,603	4,304,897
Restricted stock
Anti-dilutive securities
Potentially dilutive common shares that have not been included in the net loss per common share calculations because the effect would have been anti-dilutive	12,000	12,000