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NONCONTROLLING INTERESTS (Details) | Jun. 30, 2026 | Dec. 31, 2025 | Mar. 10, 2025 | Jan. 06, 2025
--- | --- | --- | --- | ---
BRC Partners Opportunity Fund, LP |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Rate of equity interests | 22.60% |  |  | 86.60%
B. Riley Securities Holdings, Inc. |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Ownership, percentage | 92.90% | 90.70% |  |
Minority interest, remaining |  |  | 89.40% |
B. Riley Securities Holdings, Inc. | Capital Markets segment |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Ownership, percentage |  |  | 0.60% |
BRC Partners Opportunity Fund, LP | BRC Trust | Related Party |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Ownership, percentage |  |  |  | 58.20%

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