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Deferred Acquisition Consideration (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 01, 2024 | Mar. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Jul. 31, 2023 | Oct. 01, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance of contingent payments |  | $ 101,058 | $ 101,058 | $ 161,323 |  |
Payments |  |  | 67,895 | 97,447 |  |
Adjustments to deferred acquisition consideration (2) |  |  | 23,005 | 14,303 |  |
Additions |  |  | 46,598 | 22,172 |  |
Deferred Policy Acquisition Costs, Foreign Currency Translation Gain (Loss) |  |  | (651) | 680 |  |
Other |  |  | 0 | 27 |  |
Ending balance of contingent payments |  |  | 102,115 | 101,058 |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value |  |  | 102,115 | 101,058 |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases |  |  | 46,598 | 22,172 |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements |  |  | (67,895) | (97,447) |  |
Deferred acquisition consideration |  |  | 28,100 |  |  |
Targeted Victory |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Additions |  | 22,200 |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases |  | 22,200 |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  | 26.70%
Business Acquisition, Percentage of Voting Interests Acquired, Step One & Two |  |  |  |  | 50.00% | 50.00%
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% |  |  |  |  |
Contingent Payment |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance of contingent payments |  | 57,500 | 57,500 |  |  |
Ending balance of contingent payments |  |  | 102,100 | 57,500 |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value |  |  | 102,100 | 57,500 |  |
Fixed payments |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance of contingent payments |  | 43,600 | 43,600 |  |  |
Ending balance of contingent payments |  |  | 0 | 43,600 |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value |  |  | 0 | 43,600 |  |
Common Class A |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance of contingent payments |  | $ 29,300 | 29,300 |  |  |
Payments |  |  | (18,200) | (32,800) |  |
Ending balance of contingent payments |  |  | 38,400 | 29,300 |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value |  |  | 38,400 | 29,300 |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements |  |  | $ 18,200 | $ 32,800 |  |

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