Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Potentially Dilutive Securities) (Details)

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Summary of Significant Accounting Policies (Potentially Dilutive Securities) (Details) - shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computations of diluted net loss per common share 2,192,028 600,344
Options to purchase common stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computations of diluted net loss per common share 1,835,835 465,401
Warrants to purchase common stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computations of diluted net loss per common share 356,193 131,193
Restricted stock units [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computations of diluted net loss per common share 3,750