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Derivative Warrants Liabilities (Details) - $ / shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Weighted average of inputs    
Share price $ 0.33 $ 0.80
Exercise price $ 1.02 $ 1.10
Expected volatility 73.70% 98.00%
Risk-free interest 0.48% 0.11%
Dividend yield 0.00% 0.00%
Expected life of up to (years) 1 month 27 days 9 months 25 days