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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2017
Accounting Policies [Abstract]  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
The following securities are excluded from the calculation of weighted average dilutive common shares because their inclusion would have been anti-dilutive:
 
 
 
December 31,
 
 
 
2017
 
2016
 
Options
 
 
1,684,416
 
 
786,667
 
Warrant
 
 
61,875
 
 
-
 
Series A Convertible Preferred Stock
 
 
2,932,431
 
 
3,232,294
 
Series A-2 Convertible Preferred Stock
 
 
788,827
 
 
788,827
 
Series B Convertible Preferred Stock
 
 
918,983
 
 
-
 
Total potentially dilutive shares
 
 
6,386,532
 
 
4,807,787