v3.26.1
Revenue - Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Revenue from Contract with Customer [Abstract]    
Unbilled service fees $ 211,500 $ 154,200
Unbilled outside vendor costs, billable to clients 159,320 164,694
Advance billings 369,465 329,815
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Remaining performance obligation, amount 111,400  
Unbilled service fees $ 211,500 $ 154,200
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Expected timing of satisfaction 1 year  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-07-01    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Remaining performance obligation, percent 44.00%  
Expected timing of satisfaction 6 months  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Remaining performance obligation, percent 51.00%  
Expected timing of satisfaction 1 year  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Remaining performance obligation, percent 5.00%  
Expected timing of satisfaction 1 year