NET CAPITAL REQUIREMENTS (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
B. Riley Securities (“BRS”)
Broker-Dealer, Net Capital Requirement [Line Items]
Net capital	$ 49,255	$ 69,197
Excess capital	47,118	65,420
Required minimum net capital	2,137	3,777
B. Riley Wealth Management (“BRWM”)
Broker-Dealer, Net Capital Requirement [Line Items]
Net capital	17,082	16,384
Excess capital	15,621	14,832
Required minimum net capital	$ 1,461	$ 1,552

Broker Dealer, Net Capital Requirement [Line Items]

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

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

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Minimum amount of net capital of broker-dealer and its subsidiary, calculated under Alternative Standard.

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

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Amount of net capital of broker-dealer.

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

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