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Deferred Acquisition Consideration (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Oct. 01, 2024 | Dec. 31, 2025 | Dec. 31, 2024
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Beginning balance of contingent payments |  | $ 102,115 | $ 101,058
Payments |  | 56,982 | 67,895
Adjustments to deferred acquisition consideration (2) |  | (7,467) | 23,005
Additions |  |  | 46,598
Deferred Policy Acquisition Costs, Foreign Currency Translation Gain (Loss) |  | 2,378 | (651)
Ending balance of contingent payments |  | 40,044 | 102,115
Business Acquisition [Line Items] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value |  | 40,044 | 102,115
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases |  |  | 46,598
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements |  | $ (56,982) | $ (67,895)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  | General and Administrative Expense | General and Administrative Expense
Adjustments to deferred acquisition consideration (2) |  | $ (7,467) | $ 23,005
Deferred acquisition consideration |  |  | 28,100
Emerald Research Group |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Additions | $ 17,000 |  |
Business Acquisition [Line Items] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases | $ 17,000 |  |
Business Acquisition, Percentage of Voting Interests Acquired | 40.00% |  |
Common Class A |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Beginning balance of contingent payments |  | 38,400 |
Payments |  | (21,800) | (18,200)
Ending balance of contingent payments |  | 13,600 | 38,400
Business Acquisition [Line Items] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value |  | 13,600 | 38,400
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements |  | $ 21,800 | $ 18,200

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