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Revenue Recognition (Details) - Schedule of represents the loss related to principal transactions - USD ($) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Principal transactions and proprietary trading |  |  |  |
Realized and unrealized gain on primarily riskless principal transactions | $ 2,657,000 | $ 2,340,000 | $ 6,642,000 | $ 5,956,000
Realized and unrealized gain on primarily riskless principal transactions | 317,000 |  | 686,000 |
Unrealized gain (loss) on portfolio of U.S. government securities | 1,096,000 | (1,387,000) | 2,565,000 | (4,189,000)
Unrealized gain (loss) on portfolio of U.S. government securities | 2,483,000 |  | 6,754,000 |
Total Principal transactions and proprietary trading | 3,753,000 | $ 953,000 | 9,207,000 | $ 1,767,000
Total Principal transactions and proprietary trading | $ 2,800,000 |  | $ 7,440,000 |

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- Definition Realized and unrealized gain on primarily riskless principal transactions, year over year decrease. + References No definition available. + Details
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- Definition Total Principal transactions and proprietary trading, year over year decrease. + References No definition available. + Details
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- Definition Unrealized loss on portfolio of U.S. government securities, year over year decrease. + References No definition available. + Details
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- Definition Amount of realized and unrealized gain (loss), from the firm's direct investment activity, conducted separately from customer trading activities, and includes, but is not limited to, investments in private equity, alternative investment products, real estate, and exchanges and memberships. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(g),(h)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 + Details
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- Definition Amount of realized and unrealized gain (loss) resulting from the difference between acquisition price and selling price or fair value of trading assets and trading liabilities, and from the firm's direct investment activity, conducted separately from customer trading activities, including, but not limited to, investments in private equity, alternative investment products, real estate, and exchanges and memberships. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481961/940-320-45-5 + Details
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