Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details)

v3.20.4
Fair Value Measurements (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
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 387 387
Significant unobservable inputs (Level 3) [Member] | Warrant [Member]    
Liabilities:    
Warrant liability $ 8 $ 24