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Net Loss Per Common Share (Details) - shares
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Stock Options, Restricted Stock Units And Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 2,173,195 1,322,602