Annual report pursuant to Section 13 and 15(d)

Equity Compensation - Summary of Weighted-Average Assumptions (Details)

v3.19.3.a.u2
Equity Compensation - Summary of Weighted-Average Assumptions (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award      
Dividend Yield 0.00% 0.00% 0.00%
Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award      
Volatility Factor 0.39% 0.39%  
Stock Option | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award      
Risk-free Interest Rate 1.67% 2.63% 2.05%
Volatility Factor     0.40%
Expected Life in Years 5 years 5 years 5 years
Stock Option | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award      
Risk-free Interest Rate 1.78% 2.87% 2.36%
Volatility Factor     0.41%
Expected Life in Years 7 years 8 years 8 years