v3.25.4
RELATED PARTY TRANSACTIONS - (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2024
renewal_option
Dec. 31, 2025
USD ($)
renewal_option
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Related Party Transaction [Line Items]        
Total revenue   $ 2,530,234 $ 2,109,054 $ 1,885,842
Advanced billings   854,390 710,585  
Accounts receivable and unbilled, net   402,078 296,443  
Other current liabilities   52,834 53,633  
Prepaid expense and other assets, current   90,497 63,350  
Operating lease cost recognized   31,057 31,593 $ 27,919
Operating lease right-of-use assets   117,815 128,649  
Current portion of lease liability   23,209 23,289  
Long-term portion of lease liabilities   113,643 126,234  
Accounts payable   $ 28,142 $ 32,528  
United States | Revenue net | Geographical Locations        
Related Party Transaction [Line Items]        
Percentage of total revenue to consolidated total revenue   99.00% 98.00% 98.00%
Related Party        
Related Party Transaction [Line Items]        
Total revenue   $ 53,200 $ 50,000 $ 59,600
Advanced billings   12,300 14,600  
Accounts receivable and unbilled, net   3,500 4,200  
Operating lease right-of-use assets   68,416 74,889  
Current portion of lease liability   6,915 6,310  
Long-term portion of lease liabilities   77,344 84,259  
Accounts payable   300 200  
Employee Loans | Related Party        
Related Party Transaction [Line Items]        
Prepaid expenses, other current assets, and other assets   400 300  
Related Party Service Agreement | Related Party | LIB        
Related Party Transaction [Line Items]        
Advanced billings   8,100 9,500  
Accounts receivable and unbilled, net   1,900 2,800  
Related Party Service Agreement | Related Party | CinRx Pharma and Subsidiaries        
Related Party Transaction [Line Items]        
Advanced billings   4,300 5,200  
Accounts receivable and unbilled, net   1,600 1,400  
Related Party Service Agreement | Related Party | The Summit Hotel        
Related Party Transaction [Line Items]        
Operating costs and expenses   300 300 400
Related Party Service Agreement | Related Party | Revenue net | LIB        
Related Party Transaction [Line Items]        
Total revenue   7,900 21,700 43,700
Related Party Service Agreement | Related Party | Revenue net | CinRx Pharma and Subsidiaries        
Related Party Transaction [Line Items]        
Total revenue   $ 45,300 28,300 15,800
Leased Real Estate | Related Party | Office Space | Chief Executive Officer And Immediate Family        
Related Party Transaction [Line Items]        
Number of lease renewal, 10-year option | renewal_option   2    
Lease term upon renewal   10 years    
Operating lease right-of-use assets   $ 48,400 50,200  
Current portion of lease liability   1,800 1,500  
Long-term portion of lease liabilities   $ 60,200 62,000  
Leased Real Estate | Related Party | Building | Chief Executive Officer And Immediate Family        
Related Party Transaction [Line Items]        
Number of lease renewal, 10-year option | renewal_option   1    
Lease term upon renewal   10 years    
Operating lease right-of-use assets   $ 4,200 6,400  
Current portion of lease liability   2,300 2,200  
Long-term portion of lease liabilities   1,900 4,200  
Leased Real Estate | Related Party | Direct Costs and Selling General And Administrative | Office Space | Chief Executive Officer And Immediate Family        
Related Party Transaction [Line Items]        
Operating lease cost recognized   5,700 5,700 5,700
Leased Real Estate | Related Party | Direct Costs and Selling General And Administrative | Building | Chief Executive Officer And Immediate Family        
Related Party Transaction [Line Items]        
Operating lease cost recognized   2,500 2,500 2,500
Leased Real Estate | Chief Executive Officer        
Related Party Transaction [Line Items]        
Term of lease 10 years      
Number of lease renewal, 10-year option | renewal_option 1      
Lease term upon renewal 10 years      
Operating lease right-of-use assets   15,800 17,600  
Current portion of lease liability   1,800 1,600  
Long-term portion of lease liabilities   14,700 16,500  
Leased Real Estate | Chief Executive Officer | Direct Costs and Selling General And Administrative        
Related Party Transaction [Line Items]        
Operating lease cost recognized   2,700 2,700 2,600
Travel Services | Related Party        
Related Party Transaction [Line Items]        
Accounts payable   300 200  
Travel Services | Chief Executive Officer | Selling, general, and administrative        
Related Party Transaction [Line Items]        
Travel expenses with related party   $ 2,100 1,900 2,000
Second Leased Real Estate | Related Party | Building | Chief Executive Officer And Immediate Family        
Related Party Transaction [Line Items]        
Number of lease renewal, 10-year option | renewal_option   1    
Lease term upon renewal   10 years    
Operating lease right-of-use assets   $ 0 700  
Current portion of lease liability   1,000 900  
Long-term portion of lease liabilities   500 1,500  
Second Leased Real Estate | Related Party | Direct Costs and Selling General And Administrative | Building | Chief Executive Officer And Immediate Family        
Related Party Transaction [Line Items]        
Operating lease cost recognized   $ 800 $ 2,900 $ 1,100