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Related Party Transactions - Loans, Forgivable Loans and Other Receivables from Employees and Partners, Net (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Related Party Transaction [Line Items] |  |  |
Loans, forgivable loans and other receivables from employees and partners, net | $ 367,805 | $ 319,612 |
Related Party |  |  |
Related Party Transaction [Line Items] |  |  |
Loans, forgivable loans and other receivables from employees and partners, net | 367,800 | 319,600 |
Compensation expense related to employee loans | 51,300 | 49,500 | $ 217,700
Interest income | $ 15,100 | $ 7,500 | $ 10,000

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