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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net (loss) income attributable to B. Riley Financial, Inc.	$ (73,823)	$ 47,837	$ (10,287)	$ (102,384)

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- Definition

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

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