v3.25.4
Equity Awards - Additional Information (Detail) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Aug. 31, 2025
May 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Aug. 03, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Common Stock, Capital Shares Reserved for Future Issuance             1,425,000
Number of shares available for future grant     1,243,958   1,243,958    
Stock option expense     $ 0.5 $ 0.3 $ 1.3 $ 0.9  
Aggregate intrinsic value for outstanding options     19.5   19.5    
Aggregate intrinsic value for exercisable options     18.7   18.7    
Total intrinsic value of options exercised         1.0    
Restricted stock or unit expense     $ 5.0 $ 4.5 $ 14.5 $ 13.3  
Maximum Performance Level [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Vesting Percentage of Target PSA's         200.00%    
Threshold Performance Level [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Vesting Percentage of Target PSA's         50.00%    
Performance share units [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Allocated share based compensation expense         $ 17.4    
Performance share units [Member] | Fiscal 2026 Stock Awards [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Number of shares available for future grant   29,273          
Performance stock options [Member] | Fiscal 2026 Stock Awards [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Number of shares available for future grant   14,712          
Performance Vesting Stock Options [Member] | Long Term Compensation Plan [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock based compensation plan, description         The performance vesting criteria are based upon certain levels of average annual return on equity (as defined in the Performance Stock Award Agreements) ranging from 10.0% to 20.0% measured at the end of fiscal 2028 (three-year performance period) as modified by total stockholder return. Performance outcomes (taking into account both criteria) will result in a threshold vesting percentage of 50% of target and maximum performance will result in a vesting percentage of 200% of target. If the threshold vesting percentage is not achieved none of the Performance Stock Awards will be earned.    
Performance Vesting Stock Options [Member] | Long Term Compensation Plan [Member] | Maximum [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Percentage of average return on invested capital   20.00%          
Performance Vesting Stock Options [Member] | Long Term Compensation Plan [Member] | Minimum [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Percentage of average return on invested capital   10.00%          
Fiscal 2026 Time Vesting Stock Options [Member] | Long Term Compensation Plan [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Number of shares available for future grant     14,712   14,712    
Share-based compensation vesting period         3 years    
Employee Stock Option              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Weighted-average period of recognition of unrecognized compensation cost         2 years    
Unrecognized compensation expense     $ 2.7   $ 2.7    
Time Vesting Restricted Stock [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Number of shares available for future grant     29,273   29,273    
Restricted stock granted 9,735            
Fiscal 2026 Employee Restricted Stock Unit Time-Vesting Award [Member] | Long Term Compensation Plan [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based compensation vesting period         3 years    
Fiscal 2026 Board of Directors Restricted Stock Award [Member] | Long Term Compensation Plan [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based compensation vesting period 1 year            
Restricted Stock [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Weighted-average period of recognition of unrecognized compensation cost         1 year 3 months 18 days    
Unrecognized compensation expense     $ 22.8   $ 22.8