Annual report [Section 13 and 15(d), not S-K Item 405]

Employee Benefit Plans - Additional Information (Details)

v3.25.4
Employee Benefit Plans - Additional Information (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2025
USD ($)
Employer
Plans
Members
shares
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Sep. 30, 2025
USD ($)
Jun. 30, 2025
shares
Mar. 31, 2025
USD ($)
Jun. 30, 2019
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of active stock compensation plans | Plans 2            
Restricted stock shares | shares 300,000            
Number of employers obligated to make contribution under multiemployer plan | Employer 170            
Number of employee increase / (decrease) under multiemployer benefit percentage (0.50%) (1.30%)          
Total contributions of multi employer Plan   5.00%          
Multiemployer Plan, Increase in Employer Contribution, Business Combination, Percentage 2.00%            
AI Pension Plan projected pension liability           $ 1,000,000  
AI Pension Plan special financial assistance       $ 1,100,000      
SERP              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Members of senior management | Members 13            
Restricted stock units and restricted stock awards              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Tax benefit recognized $ 6,500 $ 6,800 $ 6,600        
Restricted stock units and restricted stock awards | Selling, general and administrative expenses              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation expense 23,100 23,500 23,300        
Restricted stock units and restricted stock awards              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation expense not yet recognized $ 34,800            
Total compensation cost related to non-vested options expected to be recognized over weighted average period 3 years 1 month 24 days            
401(k) plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Employer contribution $ 14,300 $ 13,100 $ 13,200        
2012 Formula Plan | Class A common stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized | shares         600,000   300,000
2012 Plan | Restricted stock units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock award vesting period 3 years            
2012 Plan | Restricted stock units | Executive officers and other key associates              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted stock shares | shares 284,000            
2012 Plan | Restricted stock awards | Board of Directors              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted stock shares | shares 28,000            
2012 Plan | Class A common stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized | shares         8,000,000   2,000,000
2012 Formula Plan and 2004 Plan | Class A common stock | Options              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock option expiration period 10 years            
2012 Formula Plan and 2004 Plan | Class A common stock | Options | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock award vesting period 3 years            
2012 Formula Plan and 2004 Plan | Class A common stock | Restricted stock awards and restricted stock units | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock award vesting period 1 year            
2012 Formula Plan and 2004 Plan | Class A common stock | Restricted stock awards and restricted stock units | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock award vesting period 3 years