XML 64 R53.htm IDEA: XBRL DOCUMENT v3.19.1
DERIVATIVE INSTRUMENTS, INCEPTION FAIR VALUE OF WARRANTS (Details)
$ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
Jun. 30, 2018
USD ($)
Y
item
2018 Series B Warrant Exercise price $.01    
Fair value of warrants    
Fair value of warrants | $   $ 11.5
2018 Series B Warrant Exercise price $.01 | Underwritten Public Offering, June 2018    
Fair value of warrants    
Derivative Liability Decrease Exercise And Repurchase Of Warrants | $ $ 10.6  
2018 Series A Warrant Exercise price $2.00    
Fair value of warrants    
Fair value of warrants | $   $ 13.7
Risk-free interest rate | 2018 Series B Warrant Exercise price $.01    
Fair value of warrants    
Derivative warrant liability measurement input   0.0295
Risk-free interest rate | 2018 Series A Warrant Exercise price $2.00    
Fair value of warrants    
Derivative warrant liability measurement input   0.0275
Expected dividend yield | 2018 Series B Warrant Exercise price $.01    
Fair value of warrants    
Derivative warrant liability measurement input   0
Expected dividend yield | 2018 Series A Warrant Exercise price $2.00    
Fair value of warrants    
Derivative warrant liability measurement input   0
Contractual term | 2018 Series B Warrant Exercise price $.01    
Fair value of warrants    
Derivative warrant liability measurement input | Y   20
Contractual term | 2018 Series A Warrant Exercise price $2.00    
Fair value of warrants    
Derivative warrant liability measurement input | Y   5
Expected volatility | 2018 Series B Warrant Exercise price $.01    
Fair value of warrants    
Derivative warrant liability measurement input   2.0251
Expected volatility | 2018 Series A Warrant Exercise price $2.00    
Fair value of warrants    
Derivative warrant liability measurement input   2.0251