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SUBSEQUENT EVENT (Details) |  |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |
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Aug. 20, 2025 USD ($) | Apr. 04, 2025 USD ($) financial_advisor | Mar. 26, 2025 USD ($) | Mar. 03, 2025 USD ($) | Feb. 26, 2025 USD ($) $ / shares shares | Nov. 15, 2024 | Aug. 21, 2023 | Mar. 31, 2025 USD ($) | Dec. 31, 2024 | Aug. 19, 2025 USD ($) | Jul. 11, 2025 USD ($) $ / shares shares | Jun. 30, 2025 USD ($) $ / shares shares | Jun. 27, 2025 USD ($) | May 21, 2025 USD ($) $ / shares shares | Apr. 07, 2025 USD ($) | Apr. 05, 2025 USD ($) | Mar. 10, 2025
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  |  |  |  |  | Secured Overnight Financing Rate (SOFR) | Secured Overnight Financing Rate (SOFR) |  | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |
6.50% Senior Notes due 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  | 6.50% |  |  |  |  |  |  |  |
Nomura |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 6.00% |  |  |  |  |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants repurchased (in shares) | shares |  |  |  |  |  |  |  |  |  |  | 98,444 | 52,000 |  | 372,268 |  |  |
Exercise price per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 10.00 | $ 10.00 |  | $ 10.00 |  |  |
Warrants and rights outstanding, term |  |  |  |  |  |  |  |  |  |  | 7 years | 7 years |  | 7 years |  |  |
Subsequent Event | B. Riley Securities Holdings, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership, percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00%
Minority interest, remaining |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 89.40%
Subsequent Event | B. Riley Securities Holdings, Inc. | Capital Markets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership, percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.60%
Subsequent Event | Oaktree Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants repurchased (in shares) | shares |  |  |  |  | 1,832,290 |  |  |  |  |  |  |  |  |  |  |  |
Exercise price per share (in dollars per share) | $ / shares |  |  |  |  | $ 5.14 |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  | $ 24,611,000 |  |  |  |  |  |  |  | $ 42,838,000 | $ 13,000,000 |  | $ 93,067,000 |  |  |
Subsequent Event | 5.50% Senior Notes due March 2026 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  | $ 86,309,000 |  |  |  |  |  |  |  |  |  |  | 29,535,000 |  |  |
Interest rate |  |  | 5.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | 5.00% Senior Notes due December 2026 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  | $ 36,745,000 |  |  |  |  |  |  |  | $ 19,682,000 | 8,021,000 |  | 75,000,000 | $ 22,000,000 |  |
Interest rate |  |  | 5.00% |  |  |  |  |  |  |  | 5.00% |  |  |  | 5.00% |  |
Subsequent Event | 8.00% Senior Secured Second Lien Notes due 2028 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage of principal amount |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, redemption price, percentage |  |  | 101.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | 8.00% Senior Secured Second Lien Notes due 2028 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  | $ 87,753,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | 6.00% Senior Notes due January 2028 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  |  |  | $ 4,706,000 | 1,892,000 |  | $ 34,537,000 |  |  |
Interest rate |  |  | 6.00% |  |  |  |  |  |  |  | 6.00% |  |  | 6.00% | 6.00% |  |
Subsequent Event | 5.25% Senior Notes due August 2028 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  |  |  | $ 16,389,000 | $ 18,096,000 |  |  | $ 9,992,000 |  |
Interest rate |  |  | 5.25% |  |  |  |  |  |  |  | 5.25% |  |  |  | 5.25% |  |
Subsequent Event | 6.50% Senior Notes due 2026 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  |  |  | $ 2,061,000 |  |  |  |  |  |
Interest rate |  |  | 6.50% |  |  |  |  |  |  |  | 6.50% |  |  |  |  |  |
Subsequent Event | Targus/FGI Credit Agreement | Subordinated Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount | $ 10,000,000 |  |  |  |  |  |  |  |  | $ 5,000,000 |  |  |  |  |  |  |
Subsequent Event | Secured Debt | Oaktree Credit Agreement | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, term |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  | $ 125,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  |  |  |  | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 8.00% |  |  |  |  |  |  |  |  |  |  |  |
Closing fee |  |  |  |  | 3.00% |  |  |  |  |  |  |  |  |  |  |  |
Exit fee |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  | $ 62,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Secured Debt | Targus/FGI Credit Agreement | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, term | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Secured Delayed Draw Term Loan | Oaktree Credit Agreement | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, term |  |  |  |  | 4 months |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  | $ 35,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Closing fee |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Nomura | Targus/FGI Credit Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity credit facility | $ 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity contribution from equity holders | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Nomura | Targus/FGI Credit Agreement | Base Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 5.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Nomura | Targus/FGI Credit Agreement | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Monthly collateral management fee | 0.0030 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Nomura | Targus/FGI Credit Agreement | Secured Overnight Financing Rate Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 0.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Maximum | B. Riley Securities Holdings, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership, percentage, vesting terms |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years
Subsequent Event | Maximum | Oaktree Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, number of securities called by warrants or rights, percentage |  |  |  |  | 19.90% |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Minimum | B. Riley Securities Holdings, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership, percentage, vesting terms |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 years
Subsequent Event | Minimum | Oaktree Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, number of securities called by warrants or rights, percentage |  |  |  |  | 6.00% |  |  |  |  |  |  |  |  |  |  |  |
W-2 Wealth Management Business | Subsequent Event | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets under management, carrying amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,000,000,000.0 |
Assets sold under agreements to repurchase, interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 19.30% |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | W-2 Wealth Management Business | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, including discontinued operation, consideration |  | $ 26,037,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of financial advisors | financial_advisor |  | 36 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Atlantic Coast Recycling | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, including discontinued operation, consideration |  |  |  | $ 102,478,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from divestiture of businesses |  |  |  | $ 68,638,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  | $ 22,610,000 |  |  |  |  |  |  |  |  |  |  |  |
Gain on disposition of business |  |  |  |  |  |  |  | $ 52,705,000 |  |  |  |  |  |  |  |  |
Disposal Group, Held-for-Sale, Not Discontinued Operations | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, including discontinued operation, consideration |  |  |  |  |  |  |  |  |  |  |  |  | $ 117,800,000 |  |  |  |
Disposal group, working capital adjustment, duration |  |  |  |  |  |  |  |  |  |  |  |  | 180 days |  |  |  |

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