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Significant Accounting Policies (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Accounting Policies [Abstract]      
Allowance for doubtful accounts $ 11,700,000 $ 6,100,000  
Significant Accounting Policies [Line Items]      
Fixed assets, accumulated depreciation (114,970,000) (104,301,000)  
Defined Contribution Plan, Cost 24,500,000 19,700,000 $ 20,500,000
Accounts Receivable, Sale 501,300,000 435,600,000 393,900,000
Trade Receivables Collected and Due to Third Party under Receivable Purchase Agreement 21,200,000 19,500,000 1,800,000
Trade Receivable Fees paid to Third Party under Receivable Purchase Agreement $ 5,600,000 $ 5,800,000 5,400,000
Percentage of revenue from largest client 4.00% 3.00%  
Total periodic benefit income $ 700,000 $ 200,000 300,000
Settlement (gain) $ 300,000    
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate 5.75%    
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets 7.00%    
Defined Benefit Plan, Benefit Obligation $ 25,100,000 24,800,000  
Defined Benefit Plan, Plan Assets, Amount 22,700,000 23,400,000  
Liability, Defined Benefit Plan, Noncurrent $ 2,300,000 $ 1,300,000  
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 5.23% 5.75%  
Target Allocation 100.00%    
Actual Allocation 100.00%    
Defined Benefit Plan, Accumulated Other Comprehensive Income Net Settlement and Curtailment gain (loss), net of tax $ 4,300,000 $ 6,800,000  
2026 1,800,000    
2027 1,700,000    
2028 1,700,000    
2029 1,900,000    
2030 1,900,000    
Thereafter 9,200,000    
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year 600,000    
Defined Benefit Plan, Plan Assets, Contributions by Employer 700,000    
Revenues 2,909,000,000 2,841,216,000 2,527,177,000
Marketing and advertising services | Director      
Significant Accounting Policies [Line Items]      
Revenues $ 6,300,000 $ 4,900,000 $ 0
Minimum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 3 years    
Maximum      
Significant Accounting Policies [Line Items]      
Property, plant and equipment, useful life 10 years