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Summary of Significant Accounting Policies (Details) - shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Total 12,084,837 8,371,470
Warrant [Member]    
Total 11,226,821 6,431,785
Restricted Stock Units [Member]    
Total 136,245 287,885
Common Stock Options [Member]    
Total 1,721,771 1,651,800