Related Party Transactions - Service Agreements and Loans (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Related Party Transaction
Fees to related parties	$ 6,827	$ 6,748	$ 14,619	$ 13,577
Loans, forgivable loans and other receivables from employees and partners, net	628,288		628,288		$ 500,833
Labor and related expense	366,539	468,605	730,538	868,087
Cantor Fitzgerald Limited Partnership And B G C Partners Incorporation \| Related Party
Related Party Transaction
Fees to related parties	6,800	6,700	14,600	13,600
Employee Loans
Related Party Transaction
Labor and related expense	$ 25,000	$ 20,700	$ 50,400	$ 39,600

Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.

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Amount, after allowance for credit loss, of receivable classified as other and noncurrent.

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A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

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