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Net Loss Per Common Share (Details) - shares
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total shares excluded from calculation 389,217 423,816
Stock options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total shares excluded from calculation 387,519 376,775
Convertible preferred stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total shares excluded from calculation 1,698 1,698
Common stock warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total shares excluded from calculation 45,343