Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share - Narrative (Details)

v3.20.2
Net Loss Per Share - Narrative (Details)
 1 Months Ended 3 Months Ended 9 Months Ended
Dec. 31, 2018
shares
Mar. 31, 2020
shares
Sep. 30, 2020
shares
Dec. 31, 2019
shares
Dec. 27, 2018
shares
Dec. 26, 2018
shares
Subsidiary, Sale of Stock [Line Items]            
Preferred stock, shares authorized (in shares)     5,000,000 5,000,000    
Preferred Stock            
Subsidiary, Sale of Stock [Line Items]            
Conversion of preferred stock to common stock (in shares)     (1,600,000)      
Common stock            
Subsidiary, Sale of Stock [Line Items]            
Conversion of preferred stock to common stock (in shares)   8,000,000.0 8,000,000      
Series B Preferred Stock | Preferred Stock            
Subsidiary, Sale of Stock [Line Items]            
Preferred stock conversion ratio 0.20   0.20      
Shares converted (in shares)   1,600,000        
Private Placement | Series B Preferred Stock | Preferred Stock            
Subsidiary, Sale of Stock [Line Items]            
Preferred stock, shares authorized (in shares) 2,857,143       2,857,143 2,857,143