Debt Instrument, Face Amount, Total

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- Definition

Debt Instrument, Number Of Private Exchange Transactions

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- Definition

Disposal Group, Including Discontinued Operation, Number of Financial Advisors

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Disposal Group, Working Capital Adjustment, Duration

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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- Definition

Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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ORGANIZATION AND NATURE OF BUSINESS OPERATIONS (Details) $ in Thousands			3 Months Ended		6 Months Ended
	Apr. 04, 2025 USD ($) financial_advisor	Mar. 03, 2025 USD ($)	Jun. 30, 2025 USD ($) transaction	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) segment transaction	Jun. 30, 2024 USD ($)	Jul. 12, 2025 USD ($)	Jul. 11, 2025 USD ($)	Jun. 27, 2025 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment					5
Number of operating segments \| segment					5
Gain on extinguishment of debt			$ 66,795		$ 66,795
Net income (loss) attributable to B. Riley Financial, Inc.			$ 139,471	$ (433,604)	$ 129,496	$ (482,769)
Debt instrument, number of private exchange transactions \| transaction			4		4
5.50% Senior Notes due March 2026 \| Senior Notes
Segment Reporting Information [Line Items]
Debt instrument, face amount, total			$ 115,844		$ 115,844
Interest rate			5.50%		5.50%
5.00% Senior Notes due December 2026 \| Senior Notes
Segment Reporting Information [Line Items]
Debt instrument, face amount, total			$ 126,766		$ 126,766
Interest rate			5.00%		5.00%
6.000% Senior Notes due January 2028 \| Senior Notes
Segment Reporting Information [Line Items]
Debt instrument, face amount, total			$ 46,429		$ 46,429
5.250% Senior Notes due August 2028 \| Senior Notes
Segment Reporting Information [Line Items]
Debt instrument, face amount, total			23,096		23,096
8.000% Senior Secured Second Lien Notes due 2028 \| Senior Notes
Segment Reporting Information [Line Items]
Debt instrument, face amount, total			$ 203,812		$ 203,812
Interest rate			8.00%		8.00%
Subsequent Event \| 5.50% Senior Notes due March 2026 \| Senior Notes
Segment Reporting Information [Line Items]
Interest rate							5.50%
Subsequent Event \| 5.50% Senior Notes due March 2026 \| Senior Secured Notes
Segment Reporting Information [Line Items]
Principal amount							$ 101,596
Subsequent Event \| 5.00% Senior Notes due December 2026 \| Senior Notes
Segment Reporting Information [Line Items]
Debt instrument, face amount, total							$ 178,266	$ 19,682
Interest rate							5.00%	5.00%
Subsequent Event \| 6.000% Senior Notes due January 2028 \| Senior Notes
Segment Reporting Information [Line Items]
Debt instrument, face amount, total								$ 4,706
Interest rate								6.00%
Subsequent Event \| 5.250% Senior Notes due August 2028 \| Senior Notes
Segment Reporting Information [Line Items]
Debt instrument, face amount, total								$ 16,389
Interest rate								5.25%
Subsequent Event \| 8.000% Senior Secured Second Lien Notes due 2028 \| Senior Notes
Segment Reporting Information [Line Items]
Debt instrument, face amount, total								$ 24,611
Subsequent Event \| 6.50% Senior Notes due September 2026 \| Senior Notes
Segment Reporting Information [Line Items]
Debt instrument, face amount, total								$ 2,061
Interest rate							6.50%	6.50%
Subsequent Event \| 6.50% Senior Notes due September 2026 One \| Senior Notes
Segment Reporting Information [Line Items]
Principal amount							$ 178,471
W-2 Wealth Management Business
Segment Reporting Information [Line Items]
Gain on extinguishment of debt	$ 5,372
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Segment Reporting Information [Line Items]
Gain on extinguishment of debt				$ (163)		$ (163)
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| W-2 Wealth Management Business
Segment Reporting Information [Line Items]
Number of financial advisors \| financial_advisor	36
Contingent consideration	$ 26,037
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Atlantic Coast Recycling
Segment Reporting Information [Line Items]
Gain (loss) on disposition of business					$ 52,430
Contingent consideration		$ 102,478
Proceeds from divestiture of businesses		$ 68,638
Disposal Group, Held-for-Sale, Not Discontinued Operations
Segment Reporting Information [Line Items]
Contingent consideration									$ 117,800
Disposal group, working capital adjustment, duration									180 days
Gain on extinguishment of debt					$ 66,795