Business Combinations - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2026	Sep. 30, 2026	Dec. 31, 2025	Oct. 31, 2025
Liabilities assumed:
Goodwill	$ 277,880	$ 277,880	$ 274,470
MarshBerry Holding Company, LLC
Identifiable assets acquired:
Cash and cash equivalents	3,531	3,531		$ 3,531
Receivables	50,276	50,276		50,276
Prepaid expenses and other assets	2,209	2,209		2,793
Measurement period adjustments, prepaid expenses and other assets		(584)
Property and equipment, net	3,632	3,632		3,939
Measurement period adjustments, property and equipment, net		(307)
Other intangible assets	127,092	127,092		127,092
Right-of-use lease asset	6,953	6,953		6,953
Total fair value of identifiable assets acquired	193,693	193,693		194,584
Measurement period adjustments, assets		(891)
Liabilities assumed:
Accounts payable and accrued expenses	(120,133)	(120,133)		(120,117)
Measurement period adjustments, accounts payable and accrued expenses		(16)
Compensation payable	(8,809)	(8,809)		(8,809)
Deferred revenue	(1,453)	(1,453)		(1,453)
Deferred tax liability	(1,489)	(1,489)		(1,489)
Lease liability and other liabilities	(6,952)	(6,952)		(6,952)
Total fair value of liabilities assumed:	(138,836)	(138,836)		(138,820)
Measurement period adjustments, liabilities		(16)
Total fair value of identifiable net assets acquired:	54,857	54,857		55,764
Measurement period adjustments, assets and liabilities, net		(907)
Goodwill	214,149	214,149		209,622
Measurement period adjustment, Goodwill	4,500	4,527
Noncontrolling interests	(7,420)	(7,420)		(7,420)
Total consideration transferred:	$ 261,586	261,586		$ 257,966
Measurement period adjustment, total consideration transferred		$ 3,620