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Stockholders' Equity - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details) - $ / shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Equity [Abstract]    
Exercise price $ 0.89 $ 1.58
Volatility 148.71% 285.27%
Risk-free interest rate 2.63% 1.88%
Expected dividend yield 0.00% 0.00%
Expected term (years) 6 years 6 years