Net Loss Per Share Of Common Stock, Basic And Diluted - Anti-dilutive Securities (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Stock options
Anti-dilutive securities
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding	4,104,574	2,198,630	4,104,574	2,198,630
Warrants on common stock
Anti-dilutive securities
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding	18,986,559	19,001,143	18,986,559	19,001,143
Restricted Stock Awards
Anti-dilutive securities
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding	400,000	0	400,000	0
Underwriters' unit purchase option
Anti-dilutive securities
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding	40,000	40,000	40,000	40,000
Convertible preferred shares
Anti-dilutive securities
Anti- dilutive securities excluded from the computation of diluted weighted shares outstanding	0	11,940,000	0	11,940,000