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Stock-Based Compensation Plans - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Jan. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense related to share-based compensation plans   $ 20.6 $ 20.1 $ 17.1
Compensation expense related to share-based compensation plans, net of tax   $ 15.7 $ 14.9 $ 13.1
Time Based Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock grants   214,672 534,580 339,196
Restricted stock grants, Weighted average grant date fair value   $ 82.91 $ 66.02 $ 52.07
Unrecognized compensation cost related to non-vested share-based compensation   $ 41.3 $ 45.5 $ 27.5
Unrecognized compensation cost weighted average period recognized (years)   2 years 8 months 1 day 3 years 1 month 9 days 2 years 5 months 19 days
Time Based Restricted Stock [Member] | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock vesting period   1 year 1 year 1 year
Time Based Restricted Stock [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock vesting period   5 years 5 years 5 years
Performance Shares [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense related to share-based compensation plans   $ 5.6 $ 5.8 $ 4.5
Compensation expense related to share-based compensation plans, net of tax   $ 4.2 4.3 3.5
Performance Based Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock performance shares earned   200.00%    
Additional restricted shares issued   4,000    
Restricted stock vesting date   Jan. 02, 2023    
Restricted stock grants   55,794    
Restricted stock grants, Weighted average grant date fair value   $ 80.87    
Unrecognized compensation cost related to non-vested share-based compensation   $ 7.6 $ 6.5 $ 4.0
Unrecognized compensation cost weighted average period recognized (years)   1 year 6 months 1 year 6 months 1 year 6 months
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock grants, Weighted average grant date fair value $ 79.49      
Total fair value of restricted shares vested   $ 22.7 $ 25.4 $ 17.8
2022 Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares available for future grant   1,548,848    
Employees [Member] | Time Based Restricted Stock [Member] | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock vesting period   3 years    
Employees [Member] | Time Based Restricted Stock [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock vesting period   5 years    
Employees [Member] | Performance Shares [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock vesting period 3 years      
Restricted stock grants 53,437      
Employees [Member] | Performance Based Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock grants   51,794 79,608 75,288
Restricted stock grants, Weighted average grant date fair value   $ 84.24 $ 57.00 $ 51.07
Employees [Member] | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock vesting period 5 years      
Restricted stock grants 205,488      
Employees [Member] | Time Based Shares        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock grants 131,915      
Outside Directors [Member] | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock vesting period 1 year      
Restricted stock grants 20,136