Accounts Payable, Accrued Expenses and Other Liabilities - Schedule of Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Dec. 31, 2024
Payables and Accruals [Abstract]
Accrued compensation	$ 108,664	$ 116,583
Payroll and other taxes payable	47,019	45,720
Financial guarantee liability	32,070	30,610	$ 26,315
Deferred rent	5,554	6,337
Contingent consideration	22,628	22,652
Payable related to Tax Receivable Agreement	17,511	17,511
Other	15,886	12,094
Total	249,332	$ 251,507
Receivable related to tax receivable agreement	$ 19,500