Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Fair value assumptions (Details)

v3.20.1
Stock-Based Compensation - Fair value assumptions (Details) - $ / shares
3 Months Ended
Mar. 31, 2020
Feb. 29, 2020
Sep. 26, 2019
Stock-Based Compensation      
Authorized shares 3,294,956    
Fair value of grants per share   $ 32.00 $ 8.25
Options      
Stock-Based Compensation      
Terms of award 10 years    
Vesting period 4 years    
Expected stock price volatility, minimum (as a percent) 78.25%    
Expected stock price volatility, maximum (as a percent) 80.76%    
Risk-free rate of interest, minimum (as a percent) 1.17%    
Risk-free rate of interest, maximum (as a percent) 2.38%    
Expected dividend yield (as a percent) 0.00%    
Options | Minimum      
Stock-Based Compensation      
Exercise price per share (in dollars per share) $ 13.60    
Fair value of grants per share $ 9.04    
Expected Term (years) 4 years 8 months 12 days    
Options | Maximum      
Stock-Based Compensation      
Exercise price per share (in dollars per share) $ 32.48    
Fair value of grants per share $ 23.58    
Expected Term (years) 7 years