Annual report pursuant to Section 13 and 15(d)

Warrants and Derivative Liabilities (Details 1)

v3.19.1
Warrants and Derivative Liabilities (Details 1) - Pricing Model - Emerald Multi-Draw Credit Agreement Warrants
Nov. 01, 2018
USD_per_warrants
$ / shares
Class of Warrant or Right [Line Items]  
Underlying common stock price | $ / shares $ 0.36
Dividend yield  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 0.00
Volatility factor  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 92.50
Risk-free interest rate  
Class of Warrant or Right [Line Items]  
Warrants and rights outstanding measurement input 2.96
Expected term (years)  
Class of Warrant or Right [Line Items]  
Expected Term 5 years