Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v3.20.1
Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Thousands
2 Months Ended 12 Months Ended
Nov. 06, 2019
Sep. 10, 2019
Mar. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Sep. 10, 2018
Subsequent Events            
Common stock, par value       $ 0.001 $ 0.001  
Issuance of common stock       $ 673    
Private placement            
Subsequent Events            
Issuance of additional common stock 39,999,998 3,269,500        
Common stock, par value $ 0.001 $ 0.001        
Issue price per share   $ 0.053525       $ 0.014
Subsequent Events | Private placement            
Subsequent Events            
Issuance of additional common stock     15,500,000      
Common stock, par value     $ 0.001      
Issue price per share     $ 0.04      
Issuance of common stock     $ 620