Warrants and Derivative Liabilities (Details 1) - Pricing Model - Emerald Multi-Draw Credit Agreement Warrants
Sep. 30, 2019
Percent
$ / shares
Nov. 01, 2018
Percent
$ / shares
Class of Warrant or Right [Line Items]    
Underlying common stock price | $ / shares   $ 0.36
Minimum    
Class of Warrant or Right [Line Items]    
Underlying common stock price | $ / shares $ 0.33  
Maximum    
Class of Warrant or Right [Line Items]    
Underlying common stock price | $ / shares $ 0.69  
Dividend yield    
Class of Warrant or Right [Line Items]    
Warrants and rights outstanding measurement input 0.00 0.00
Volatility factor    
Class of Warrant or Right [Line Items]    
Warrants and rights outstanding measurement input   92.50
Volatility factor | Minimum    
Class of Warrant or Right [Line Items]    
Warrants and rights outstanding measurement input 91.6  
Volatility factor | Maximum    
Class of Warrant or Right [Line Items]    
Warrants and rights outstanding measurement input 92.1  
Risk-free interest rate    
Class of Warrant or Right [Line Items]    
Warrants and rights outstanding measurement input   2.96
Risk-free interest rate | Minimum    
Class of Warrant or Right [Line Items]    
Warrants and rights outstanding measurement input 2.23  
Risk-free interest rate | Maximum    
Class of Warrant or Right [Line Items]    
Warrants and rights outstanding measurement input 2.51  
Expected term (years)    
Class of Warrant or Right [Line Items]    
Expected Term 5 years 5 years