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Compensation and Benefits - Components of expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Salaries, incentive compensation and benefits | $ 128,604 | $ 118,271 | $ 387,067 | $ 350,147
Restricted share-based award compensation expense | 7,489 | 7,752 | 23,549 | 24,477
Long-term incentive compensation expense | 20,430 | 12,377 | 58,637 | 42,446
Compensation and benefits | 149,034 | 130,648 | $ 445,704 | 392,593
Share-Based Compensation Arrangement By Share-Based Payment Award, Award Requisite Service Period, Retirement Acceleration |  |  | 18 months |
Deferred Bonus |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Long-term cash incentive compensation expense | $ 12,941 | $ 4,625 | $ 35,088 | $ 17,969

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