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Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024 | May 21, 2024
Summary of Significant Accounting Policies [Line Items] |  |  |
Liquid insured deposits | $ 23.9 | $ 15.4 |
Commissions receivable | 4.5 | 1.3 |
Good faith deposits | 0.5 | 0.6 |
Contract liabilities | 4.0 | 1.1 |
Contract liabilities recognized | 0.8 | 0.2 |
Recognized revenue included in contract liabilities | 0.3 | $ 0.2 |
Interest received | $ 19.2 |  |
American Ventures IM LLC and American Ventures Manager LLC [Member] |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Ownership interests | 90.00% |  |
Dominari Financial Heritage Strategies LLC [Member] |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Ownership interests |  |  | 50.00%
Dominari Securities [Member] |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Liquid insured deposits | $ 28.9 |  |

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