Net Loss Per Share (Details) - shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
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	11,679,486	10,210,598
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	11,582,818	10,150,598
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	96,668	60,000