UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Cash flows from operating activities:
Net income	$ 67,968	$ 111,111	$ 75,612	$ 65,704
Adjustments to reconcile net income with net cash provided by operating activities:
Gain on reversal of legal accrual			0	(9,455)
Equity-based compensation			141,390	136,460
Depreciation and amortization			7,660	6,768
Non-cash lease expense			10,573	8,954
Provision for credit losses on accounts receivable			6,391	(363)	$ (1,198)
Amortization of discount on held-to-maturity debt securities			(52)	(371)
Deferred income tax			2,400	(116)
Reserves on loans and notes receivable from related parties			107	1,414
Gain on bargain purchase			(1,420)	0
Other, net			173	(49)
Changes in operating assets and liabilities:
Accounts receivable			(139,644)	(93,821)
Prepaid expenses and other current assets			(4,663)	(7,466)
Other assets			655	(307)
Accounts payable and other accrued expenses			1,520	4,117
Accrued payroll and benefits			14,056	16,081
Deferred revenue			2,288	1,020
Other current liabilities			26,642	(16,511)
Operating lease liabilities			(1,287)	(11,387)
Other liabilities			350	1,226
Net cash provided by operating activities			142,751	101,898
Cash flows from investing activities:
Purchases of debt securities held to maturity			(378)	0
Proceeds from maturity of held-to-maturity debt securities			8,231	21,715
Issuance of loans and notes receivable from related parties			(871)	(2,478)
Proceeds from loans and notes receivable from related parties			414	1,680
Payments for purchases of property and equipment			(13,683)	(4,654)
Payments for capitalized internal-use software costs			(656)	(540)
Cash paid, net of cash, cash equivalents, and restricted cash acquired from acquisitions			(3,073)	0
Net cash (used in) provided by investing activities			(10,016)	15,723
Cash flows from financing activities:
Payments of deferred offering costs			(1,209)	(6,506)
Principal payments under finance lease obligations			(57)	(87)
Principal payments on notes payable to related parties			(62,447)	0
Distributions paid			(115,293)	(130,374)
Deferred consideration payments for business combinations			(7,220)	(800)
Net cash used in financing activities			(186,226)	(137,767)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash			(131)	0
Net change in cash, cash equivalents, and restricted cash			(53,622)	(20,146)
Cash, cash equivalents, and restricted cash at beginning of period			250,280	87,993	87,993
Cash, cash equivalents, and restricted cash at end of period	196,658	67,847	196,658	67,847	$ 250,280
Non-cash investing and financing transactions
Property and equipment acquired through finance leases			304	32
Right-of-use assets obtained in exchange for lease liabilities (including remeasurements)			2,036	14,736
Purchases of property and equipment included in accounts payable and other accrued expenses			0	1,152
Reclassification of redeemable noncontrolling interest from temporary equity into permanent equity			804,297	0
Contingent consideration payable for business combinations	$ 1,309	$ 0	1,309	0
Deferred consideration payable for business combinations			7,404	0
Establishment of deferred tax asset under Tax Receivable Agreement			87,499	0
Establishment of Tax Receivable Agreement liability			74,363	0
Unpaid deferred offering costs included in accounts payable and other accrued expenses			0	620
Write-off of member firm loan			0	540
Non-cash distributions payable			$ 0	$ 745