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Related Party Transactions - Service Agreements and Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Related Party Transaction
Fees to related parties	$ 6,250	$ 5,812
Loans, forgivable loans and other receivables from employees and partners, net	444,674		$ 454,270
Compensation and employee benefits	303,322	313,171
Employee Loans
Related Party Transaction
Loans, forgivable loans and other receivables from employees and partners, net	444,700		$ 454,300
Compensation and employee benefits	17,300	14,500
Cantor Fitzgerald Limited Partnership And B G C Partners Incorporation
Related Party Transaction
Fees to related parties	$ 6,200	$ 5,800

X

- Definition

The aggregate amount of expenditures for salaries, wages, profit sharing and incentives compensation, and other employee benefits, including share-based compensation and the expense related to allocation of income to limited partnership units and founding/working partner units.

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Amounts due from an Entity employee, not to include stockholders or officers, which are usually due after 1 year (or 1 business cycle).

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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