Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Fair Value Assumptions of Options Granted (Details)

v3.19.3.a.u2
Stock-Based Compensation - Fair Value Assumptions of Options Granted (Details) - Employee Stock Option
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected volatility   35.00%
Expected dividends 0.00% 0.00%
Expected term (years) 7 years 7 years
Forfeiture rate 20.00% 20.00%
Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected volatility 35.00%  
Risk-free rate 1.89% 2.53%
Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected volatility 55.00%  
Risk-free rate 2.61% 2.90%