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Description of Business and Summary of Significant Accounting Policies (Details 1) - shares
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total 51,256,570 61,715,920
Option [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total 7,783,301 5,812,042
Warrant [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total 43,473,269 55,903,878