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NET CAPITAL REQUIREMENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
B. Riley Securities
Net Capital Requirements (Details) [Line Items]
Net capital	$ 3,777	$ 4,398
Excess capital	65,420	130,163
B. Riley Wealth Management
Net Capital Requirements (Details) [Line Items]
Excess capital	14,832	10,431
Maximum | B. Riley Securities
Net Capital Requirements (Details) [Line Items]
Net capital	69,197	134,561
Maximum | B. Riley Wealth Management
Net Capital Requirements (Details) [Line Items]
Excess capital	16,384	12,328
Minimum | B. Riley Wealth Management
Net Capital Requirements (Details) [Line Items]
Net capital	$ 1,552	$ 1,897

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Net Capital Requirements (Details) [Line Items]

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Amount of net capital in excess of minimum required net capital, calculated under Alternative Standard.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Rule 15c3-1
-Number 240
-Section 15c3-1
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