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Stock Based Compensation - Assumptions Used (Details) - Stock options - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate 0.97% 0.42%
Volatility 28.80% 27.20%
Dividend yield 0.00% 0.00%
Expected years until exercise 6 years 6 months 6 years 6 months
Weighted average fair value at date of grant (usd per share) $ 9.75 $ 9.95