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Revenue from Contracts with Customers (Tables) | 3 Months Ended
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Mar. 31, 2020
Revenue From Contract With Customer [Abstract] |
Summary of Revenues from Contracts with Customers and Other Sources of Revenues | The following table presents the Company’s total revenues separated between revenues from contracts with customers and other sources of revenues (in thousands):
| Three Months Ended March 31, |  |
| 2020 |  |  | 2019 |  |
Revenue from contracts with customers: |  |  |  |  |  |  |  |
Commissions | $ | 455,855 |  |  | $ | 430,182 |  |
Data, software, and post-trade |  | 19,398 |  |  |  | 17,910 |  |
Fees from related parties |  | 5,521 |  |  |  | 5,795 |  |
Other revenues |  | 3,957 |  |  |  | 2,853 |  |
Total revenue from contracts with customers |  | 484,731 |  |  |  | 456,740 |  |
Other sources of revenue: |  |  |  |  |  |  |  |
Principal transactions |  | 113,311 |  |  |  | 84,230 |  |
Interest income |  | 4,161 |  |  |  | 3,665 |  |
Other revenues |  | 964 |  |  |  | 116 |  |
Total revenues | $ | 603,167 |  |  | $ | 544,751 |  |

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