Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details)

v3.19.1
Fair Value Measurements (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Liabilities:    
Derivative liability $ 0 $ 20,832,000
Quoted prices in active markets (Level 1) [Member]    
Liabilities:    
Derivative liability 0 0
Quoted prices in active markets (Level 1) [Member] | Warrant [Member]    
Liabilities:    
Warrant liability 0 0
Significant other observable inputs (Level 2) [Member]    
Liabilities:    
Derivative liability 0 0
Significant other observable inputs (Level 2) [Member] | Warrant [Member]    
Liabilities:    
Warrant liability 0 0
Significant unobservable inputs (Level 3) [Member]    
Liabilities:    
Derivative liability 0 20,832,000
Significant unobservable inputs (Level 3) [Member] | Warrant [Member]    
Liabilities:    
Warrant liability $ 209,909 $ 1,227,786