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Related Party Transactions - Loans, Forgivable and Other Receivables from Employees and Partners (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Related Party Transaction
Loans, forgivable loans and other receivables from employees and partners, net	$ 787,878		$ 651,197
Labor and related expense	379,638	$ 363,999
Related Party
Related Party Transaction
Loans, forgivable loans and other receivables from employees and partners, net	787,900		$ 651,200
Related Party \| Employee Loans, Compensation Expense
Related Party Transaction
Labor and related expense	24,400	25,400
Related Party \| Employee Loans, Additional Compensation and Amortization Expense
Related Party Transaction
Labor and related expense	$ 6,800	$ 0