Quarterly report pursuant to Section 13 or 15(d)

Convertible Preferred Stock and Stockholders' Equity (Deficit) - Alexander settlement agreement (Details)

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Convertible Preferred Stock and Stockholders' Equity (Deficit) - Alexander settlement agreement (Details) - USD ($)
 3 Months Ended 9 Months Ended
Nov. 09, 2020
May 18, 2020
May 14, 2020
Mar. 31, 2020
Sep. 30, 2020
Class of Stock [Line Items]          
Issuance of common stock 236,375 60,250      
Aggregate purchase price       $ 725,000  
Vendors          
Class of Stock [Line Items]          
Issuance of common stock   10,250      
Alexander Settlement Agreement          
Class of Stock [Line Items]          
Cash fees paid     $ 125,000    
Issuance of common stock   50,000 50,000    
Aggregate purchase price     $ 111,000    
Shares disposal allowed per day     5,000    
Settlement expense         $ 237,000