Quarterly report [Sections 13 or 15(d)]

Segment Reporting - Summary of Segment Reporting Information, by Segment (Details)

v3.26.1
Segment Reporting - Summary of Segment Reporting Information, by Segment (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment Reporting Information [Line Items]    
Net commissions and fees $ 782,903 $ 676,128
Fiduciary investment income 12,326 14,038
Total revenue 795,229 690,166
General and administrative expense 108,761 106,060
Change in contingent consideration 27,294 (14,042)
Interest income (1,100) (3,100)
Income from equity method investments (5,531) (4,937)
Other non-operating income (711) (377)
Income tax expense 6,508 55,430
NET INCOME (LOSS) 40,597 (4,389)
Reporting Segment    
Segment Reporting Information [Line Items]    
Net commissions and fees 782,903 676,128
Fiduciary investment income 12,326 14,038
Total revenue 795,229 690,166
Compensation-related expense 461,832 397,428
General and administrative expense 101,365 92,237
Other segment items 40,740 46,684
Depreciation and amortization 69,402 67,624
Change in contingent consideration 27,294 (14,042)
Interest income (1,146) (3,103)
Interest expense 54,879 57,611
Income from equity method investments (5,531) (4,937)
Other non-operating income (711) (377)
Income tax expense $ 6,508 $ 55,430