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Stock-Based Compensation - Summary of option-pricing model (Details) - Stock Option Plans - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted-average risk free rate of interest 1.20% 0.00% 0.00%
Expected volatility 30.00% 0.00% 0.00%
Weighted-average expected award life 6 years 8 months 12 days 0 years 0 years
Dividend yield 0.00% 0.00% 0.00%
Weighted-average fair value $ 22.66 $ 0 $ 0