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Warrant Liabilities - Schedule of Weighted-average Assumptions (Details) - Warrants [Member]
6 Months Ended
Jun. 30, 2019
Integer
shares
Jun. 30, 2018
Integer
shares
Weighted average assumptions, expected lives 0 years 18 days
Warrants classified as liabilities (in shares) | shares 2,834,246
Risk Free Interest Rate [Member]    
Weighted average assumptions, input 0.00 0.0177
Expected Dividend Yield [Member]    
Weighted average assumptions, input 0.00 0.00
Expected Volatility [Member]    
Weighted average assumptions, input 0.00 0.502