Post-effective amendment to a registration statement that is not immediately effective upon filing

Warrants and Derivative Liabilities (Details 5)

v3.19.3.a.u2
Warrants and Derivative Liabilities (Details 5) - Pricing Model - Series B warrant
Sep. 30, 2019
Percent
$ / shares
Dec. 31, 2018
Percent
USD_per_warrants
$ / shares
Dec. 31, 2017
Percent
$ / shares
Class of Warrant or Right [Line Items]      
Expected Term     3 months
Underlying common stock price | $ / shares $ 0.37 $ 0.40 $ 0.15
Dividend yield      
Class of Warrant or Right [Line Items]      
Warrants and rights outstanding measurement input 0.00 0.00 0.00
Volatility factor      
Class of Warrant or Right [Line Items]      
Warrants and rights outstanding measurement input 79.4 93.00 70.00
Risk-free interest rate      
Class of Warrant or Right [Line Items]      
Warrants and rights outstanding measurement input 1.75 2.79 1.39
Risk-free interest rate | Minimum      
Class of Warrant or Right [Line Items]      
Warrants and rights outstanding measurement input | USD_per_warrants   2.786  
Risk-free interest rate | Maximum      
Class of Warrant or Right [Line Items]      
Warrants and rights outstanding measurement input | USD_per_warrants   2.789  
Expected term (years)      
Class of Warrant or Right [Line Items]      
Expected Term 10 months 21 days    
Expected term (years) | Minimum      
Class of Warrant or Right [Line Items]      
Expected Term   1 year 7 months 21 days  
Expected term (years) | Maximum      
Class of Warrant or Right [Line Items]      
Expected Term   1 year 7 months 24 days