v3.25.4
Operating Segments and Geographic Information - Additional Information (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2025
USD ($)
Segment
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Segment Reporting Information [Line Items]      
Revenues $ 3,542,642 $ 3,566,324 $ 3,900,125
Number of reportable segments | Segment 3    
Long-lived assets $ 115,858 97,763  
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Chief Executive Officer [Member]    
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Segment operating income is the measure utilized by the CODM to assess performance and allocate resources. When evaluating the Company’s financial performance, the CODM regularly reviews revenues, compensation and benefits, reimbursable expenses and other segment items. Compensation costs are key metrics reviewed by the CODM when allocating resources and assessing performance as the Company depends significantly on human capital to deliver services to its clients. The CODM uses segment operating (loss) income as the profit measure in evaluating segment performance during the annual planning and forecasting process and in monitoring actual performance versus plan.    
UNITED STATES [Member]      
Segment Reporting Information [Line Items]      
Revenues $ 3,100,000 3,100,000 $ 3,200,000
Long-lived assets $ 114,800 $ 97,100