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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

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