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Loans receivable fair value.

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Performance Fee

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Service Agreement, Termination

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Services fees.

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Amount of underwriting and financial advisory fees.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.

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Amount of short-term and long-term debt and lease obligation.

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

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of decrease in financing receivable from sale. Excludes net investment in lease.

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Amount of gain (loss) on sale of financing receivable.

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Amount of interest and fee income from loans classified as other.

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Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.

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Percentage added to reference rate used to compute variable rate on loan receivable.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Amount of expense for investment management fee, including, but not limited to, expense in connection with research, selection, supervision, and custody of investment.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

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Cash paid for expenses incurred during underwriting activities (the process to review insurance applications, evaluate risks, accept or reject applications, and determine the premiums to be charged) for insurance companies.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash outflow for the purchase of amounts due from customers, clients, lessees, borrowers, or others under the terms of its agreements therewith.

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Fair value portion of receivables, including, but not limited to, trade account receivables, note receivables, and loan receivables.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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RELATED PARTY TRANSACTIONS (Details) $ / shares in Units, $ in Thousands							1 Months Ended	3 Months Ended			4 Months Ended	9 Months Ended			12 Months Ended
	Aug. 31, 2023 USD ($)	Aug. 21, 2023 USD ($)	Jul. 17, 2023 USD ($)	Sep. 23, 2022 USD ($)	Jul. 19, 2022 $ / shares shares	May 31, 2022 USD ($)	Mar. 31, 2022 USD ($)	Sep. 30, 2023 USD ($) party	Jun. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) party	Sep. 30, 2023 USD ($) party	Jun. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Nov. 02, 2023 USD ($)	Feb. 24, 2023	Oct. 18, 2022 USD ($)	May 30, 2022	Apr. 25, 2022 USD ($)	Mar. 09, 2022 USD ($)	Dec. 31, 2021 $ / shares	Nov. 01, 2021 USD ($)	Nov. 30, 2020
Related Party Transaction [Line Items]
Total revenues								$ 462,312		$ 312,117		$ 1,300,680		$ 698,578
Loans receivable, at fair value								549,142			$ 549,142	549,142			$ 701,652
Sold price per unit (in dollars per share) \| $ / shares																						$ 10.00
Interest income, operating								1,173				1,173
Underwriting and financial advisory and other fees								2,439		35		3,253		4,071
FRG Investment
Related Party Transaction [Line Items]
Rate of equity interests		31.00%
FRG
Related Party Transaction [Line Items]
Total revenues									$ 1,038,686				$ 3,259,396
Purchase of equity investments		$ 281,144
Lingo
Related Party Transaction [Line Items]
Financing receivable converted to equity						$ 17,500								17,500
Business combination, step acquisition, equity interest in acquiree						80.00%											20.00%		40.00%					40.00%
Business acquisition, percentage of voting interests acquired						20.00%											20.00%
Subsequent acquisition, percentage						80.00%											100.00%
Targus
Related Party Transaction [Line Items]
Total purchase consideration																		$ 247,546
Common Class A \| FaZeClan Holdings, Inc
Related Party Transaction [Line Items]
Sold price per unit (in dollars per share) \| $ / shares					$ 10.00
B. Riley Financial \| Common Class A \| FaZeClan Holdings, Inc
Related Party Transaction [Line Items]
Consummated units (in shares) \| shares					5,342,500
Freedom VCM Receivables, Inc.
Related Party Transaction [Line Items]
Loans receivable, at fair value		50,789
Payments to acquire finance receivables				$ 58,872
Gain (loss) on sale of financing receivable				$ (78)
Receivables, fair value disclosure		$ 58,872
Interest rate		19.74%
Freedom VCM Holdings, LLC
Related Party Transaction [Line Items]
Loans receivable, at fair value								33,604			33,604	33,604			175,795
Torticity, LLC \| Subsequent Event
Related Party Transaction [Line Items]
Loans receivable, at fair value																$ 15,369
Loans receivable, basis spread on variable rate																15.00%
Maven
Related Party Transaction [Line Items]
Loans receivable fair value								103,556			103,556	103,556			98,729
APLD
Related Party Transaction [Line Items]
Loans receivable fair value								4,879			4,879	4,879
Interest Income - Loan			$ 1,447
Related Party
Related Party Transaction [Line Items]
From related parties								$ 395			$ 395	$ 395			1,081
Related Party \| FaZeClan Holdings, Inc
Related Party Transaction [Line Items]
Total revenues															41,885
Related Party \| Investee
Related Party Transaction [Line Items]
Total revenues															$ 9,632
Whitehawk Capital Partners, L.P.
Related Party Transaction [Line Items]
Management fees										0				1,173
Babcock & Wilcox Enterprises, Inc.
Related Party Transaction [Line Items]
Underwriting and financial advisory fees										65				129
Service agreement, termination period												30 days
Services fees												$ 750
Performance fee							$ 1,000
The Arena Group Holdings, Inc.
Related Party Transaction [Line Items]
Loans receivable, additional fair value disclosure	$ 6,000
Interest on loan payable percentage	10.00%
Total revenues										$ 0				$ 2,023
Applied Digital
Related Party Transaction [Line Items]
Interest on loan payable percentage											9.00%
California Natural Resources Group, LLC
Related Party Transaction [Line Items]
Loans receivable, at fair value																					$ 10,000		$ 34,393
Interest rate																							10.00%
California Natural Resources Group, LLC \| Indirect Guarantee of Indebtedness
Related Party Transaction [Line Items]
Debt and lease obligation																							$ 10,375
Investee
Related Party Transaction [Line Items]
Loans receivable, at fair value																				$ 10,000
Management \| BRC Partners Opportunity Fund, LP
Related Party Transaction [Line Items]
Ownership, percentage								65.40%			65.40%	65.40%
Management \| BRC Partners Opportunity Fund, LP \| Co-Chief Executive Officer
Related Party Transaction [Line Items]
Ownership, percentage								37.90%			37.90%	37.90%
Management \| 272 Capital L.P
Related Party Transaction [Line Items]
Ownership, percentage								14.30%			14.30%	14.30%
Management \| Loan Receivable Sold
Related Party Transaction [Line Items]
Financing receivable sold												$ 7,600
Number of related parties \| party								2			2	2
Management \| Loan Receivable Sold \| BRC Partners Opportunity Fund, LP
Related Party Transaction [Line Items]
Financing receivable sold												$ 3,519
Management \| Loan Receivable Sold \| 272 Capital L.P
Related Party Transaction [Line Items]
Financing receivable sold												$ 4,081