v3.26.1
Segment Operating Results - Segment Expense Footnotes (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting Information [Line Items]        
Occupancy and Equipment Rental $ 29,726 $ 26,914 $ 56,791 $ 52,645
Professional Fees 33,044 23,133 61,399 45,523
Travel and Related Expenses 35,331 23,984 63,202 46,002
Technology and Information Services 43,961 36,587 84,379 69,954
Depreciation and Amortization 12,577 6,450 25,015 12,426
Execution, Clearing and Custody Fees 3,052 3,180 6,239 6,526
Acquisition and Transition Costs 0 1,637 1,800 1,637
Other Operating Expenses 22,826 12,945 38,474 23,937
Non-Compensation 180,517 134,830 337,299 258,650
Investment Banking & Equities        
Segment Reporting Information [Line Items]        
Occupancy and Equipment Rental 29,084 26,261 55,522 51,364
Professional Fees 32,198 22,059 59,737 43,203
Travel and Related Expenses 34,903 23,729 62,510 45,540
Technology and Information Services 42,277 35,411 81,236 67,663
Depreciation and Amortization 12,413 6,342 24,699 12,235
Execution, Clearing and Custody Fees 2,556 2,729 5,256 5,612
Acquisition and Transition Costs 0 1,637 1,800 1,637
Other Operating Expenses 22,358 12,605 37,685 23,293
Non-Compensation 175,789 130,773 328,445 250,547
Investment Management        
Segment Reporting Information [Line Items]        
Occupancy and Equipment Rental 642 653 1,269 1,281
Professional Fees 846 1,074 1,662 2,320
Travel and Related Expenses 428 255 692 462
Technology and Information Services 1,684 1,176 3,143 2,291
Depreciation and Amortization 164 108 316 191
Execution, Clearing and Custody Fees 496 451 983 914
Other Operating Expenses 468 340 789 644
Non-Compensation $ 4,728 $ 4,057 $ 8,854 $ 8,103