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Share-Based Compensation - Restricted Stock Units (Details) - Restricted Stock Units - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Jun. 30, 2022
Mar. 01, 2022
Jun. 07, 2020
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
RSU Activity            
Outstanding at the beginning of the period (in shares)       948,213    
Assumed restricted stock units from ACBI merger (in shares)   55,736   55,736    
Granted (in shares)       338,500 301,230 382,205
Vested (in shares)       (393,730)    
Forfeited (in shares)       (8,207)    
Outstanding at the end of the period (in shares)       940,512 948,213  
Weighted-Average Grant-Date Fair Value            
Outstanding at the beginning of the period (in dollars per share)       $ 67.01    
Assumed restricted stock units from ACBI merger (in dollars per share)       87.94    
Granted (in dollars per share)       82.30    
Vested (in dollars per share)       66.49    
Forfeited (in dollars per share)       83.38    
Outstanding at the end of the period (in dollars per share)       $ 73.82 $ 67.01  
Additional disclosures            
Options vested (in shares)     242,018      
Additional shares authorized       107,160    
Total unrecognized compensation cost related to nonvested restricted stock and RSUs granted       $ 26.4    
Weighted-average period over which unrecognized compensation cost is expected to be recognized       11 months 19 days    
Total fair value of shares vested during the period $ 7.5     $ 30.0 $ 6.0 $ 23.6
Tranche One            
RSU Activity            
Outstanding at the end of the period (in shares)       112,110