Net Loss Per Share Of Common Stock, Basic And Diluted - Anti-dilutive Securities (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Stock options
Anti-dilutive securities
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding	4,246,597	2,812,006
Warrants on common stock
Anti-dilutive securities
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding	4,024,708	4,661,145
Restricted Stock Awards
Anti-dilutive securities
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding	445,000	0
Underwriters' unit purchase option
Anti-dilutive securities
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding	40,000	40,000