Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share (Schedule of Antidilutive Securities) (Details)

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Net Loss Per Share (Schedule of Antidilutive Securities) (Details) - shares
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Stock options [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 465,406 267,355
Restricted Stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 61,144 29,138
Common stock warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities 4,430,730 310,397