Leases - Additional Information (Details) £ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2026 GBP (£)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jan. 01, 2026 GBP (£)
Lessee, Lease, Description [Line Items]
Operating Lease, Cost		$ 72,250	$ 60,159	$ 56,202
Variable Lease, Cost		7,322	5,815	5,548
Operating Lease, Payments		76,086	45,572	46,030
Operating Lease, Incentive Payments Received		8,128	2,666	5,599
Future lease payments		$ 4,956
Minimum
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract		8 years
Forecast | London, United Kingdom
Lessee, Lease, Description [Line Items]
Future lease payments | £					£ 175,000
Operating Lease, Additional Cost | £	£ 12,000
Letter of Credit
Lessee, Lease, Description [Line Items]
Other Assets		$ 6,037	5,886
Office Equipment
Lessee, Lease, Description [Line Items]
Operating Lease, Cost		$ 6,537	$ 6,372	$ 5,663