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VARIABLE INTEREST ENTITIES - Additional information (Details) $ in Thousands |  |  |  | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 26, 2026 USD ($) | Apr. 14, 2026 USD ($) | Aug. 14, 2025 USD ($) | Jun. 30, 2026 USD ($) | Jun. 30, 2025 USD ($) | Dec. 31, 2025 USD ($) | Mar. 10, 2025 USD ($) | Jan. 06, 2025 | Aug. 14, 2024 | May 03, 2024 company
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Variable interest entity, primary beneficiary, maximum loss exposure, amount |  |  |  |  |  |  | $ 1,835 |  |  |  |
Number of brand apparel operating companies | company |  |  |  |  |  |  |  |  |  |  | 2
Repayments of notes payable | [1] |  |  |  | $ 592 | $ 13,138 |  |  |  |  |
Noncontrolling interest, estimated recognized loss amount |  |  |  |  |  |  |  | $ 1,575 |  |  |
B. Riley Securities Holdings, Inc. |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership, percentage |  |  |  |  | 92.90% |  | 90.70% |  |  |  |
B. Riley Securities Holdings, Inc. | Capital Markets segment |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership, percentage |  |  |  |  |  |  |  | 0.60% |  |  |
Bicoastal Alliance, LLC |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Rate of equity interests |  |  |  |  |  |  |  |  |  | 50.00% | 50.00%
Repayments of notes payable |  |  |  | $ 700 |  |  |  |  |  |  |
Gain (loss) on disposition of business |  |  |  |  |  | $ 28,411 |  |  |  |  |
Investor | BRC Partners Opportunity Fund, LP | BRC Trust |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership, percentage |  |  |  |  |  |  |  |  | 13.30% |  |
Related Party | BRC Partners Opportunity Fund, LP | BRC Trust |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership, percentage |  |  |  |  |  |  |  |  | 58.20% |  |
Equity securities | Enovum Loan | Enovum Loan | Non Affiliate |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Variable interest entity, primary beneficiary, maximum loss exposure, amount |  |  |  |  | $ 20,545 |  |  |  |  |  |
Principal amount |  | $ 20,000 |  |  |  |  |  |  |  |  |
Purchase consideration paid |  | $ 19,400 |  |  |  |  |  |  |  |  |
Variable Interest Entity, Not Primary Beneficiary |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase of equity investments |  |  | $ 750 |  |  |  |  |  |  |  |
Maximum exposure to loss |  |  |  |  | $ 1,294 |  |  |  |  |  |
Variable Interest Entity, Not Primary Beneficiary | Special Purpose Entity |  |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |  |
Rate of equity interests |  |  | 7.00% |  |  |  |  |  |  |  |
[1] | Amounts presented contain results from both continuing and discontinued operations. Refer to Note 4 – Discontinued Operations and Assets Held for Sale for additional information regarding cash flow associated with the results of discontinued operations.

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