Related Party Transactions - Receivables from and Payables to Related Broker-Dealers (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Payables to related parties	$ 10,550	$ 53,764
Freedom
Related Party Transaction [Line Items]
Receivables from Cantor related to open derivative contracts	1,400	1,400
Cantor
Related Party Transaction [Line Items]
Receivables from Cantor related to open derivative contracts	3,100	2,500
Payables to related parties	5,800	1,500
Payables to Cantor related to pending equity trades	$ 0	$ 0

Amount for accounts payable to related parties.

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