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Related Party Transactions - Cantor Aurel Revenue Sharing Agreement (Details) - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Jun. 24, 2021 | Dec. 31, 2021 | Dec. 31, 2022
Related Party Transaction [Line Items] |  |  |
Payables to related parties |  | $ 53,764 | $ 10,550
Aurel BGC SAS | Cantor |  |  |
Related Party Transaction [Line Items] |  |  |
Recognized related party revenues |  | 2,500 |
Payables to related parties |  | $ 1,700 |
Aurel BGC SAS | Cantor |  |  |
Related Party Transaction [Line Items] |  |  |
Related party transactions, percentage of revenue shared between entities | 80.00% |  |
Related party transactions, revenue sharing agreement, term | 12 months |  |
Related party transactions, revenue sharing agreement, termination notice term (at least) | 3 months |  |

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