Deferred Acquisition Consideration (Details) - USD ($) $ in Thousands		3 Months Ended
	Oct. 01, 2024	Mar. 31, 2025	Mar. 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		16,103	67,895
Adjustments to deferred acquisition consideration (2)		6,657	23,005
Additions		0	46,598
Deferred Policy Acquisition Costs, Foreign Currency Translation Gain (Loss)		608	(651)
Ending balance of contingent payments		93,277
Business Acquisition [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		93,277
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases		0	46,598
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements		(16,103)	(67,895)
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			(18,200)
Ending balance of contingent payments		42,400
Business Acquisition [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		$ 42,400
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements			$ 18,200