Condensed Consolidated Statements of Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Loss	Noncontrolling Interest	Total
Begining Balance, Shares at Dec. 31, 2013		1,500,107
Begining Balance, Amount at Dec. 31, 2013			$ 3,086	$ (6,611)	$ (638)	$ 12	$ (4,151)
Issuance of common stock on June 5, 2014 for cash, net of issuance costs of $215, Shares		10,289,300
Issuance of common stock on June 5, 2014 for cash, net of issuance costs of $215, Amount		$ 1	51,232				51,233
Foregiveness of long-term debt on June 5, 2014 from the former Great American Group Members			18,759				18,759
Issuance of common stock for acquisition of B. Riley & Co., Inc. on June 18, 2014, Shares		4,191,512
Issuance of common stock for acquisition of B. Riley & Co., Inc. on June 18, 2014, Amount		$ 1	26,406				26,407
B. Riley Financial, Inc. common stock owned by B. Riley & Co., Inc. - cancelled upon acquisition, Shares		(3,437)
B. Riley Financial, Inc. common stock owned by B. Riley & Co., Inc. - cancelled upon acquisition, Amount			(29)				(29)
Unrealized loss on available for sale investments, net of tax benefit of $4					(6)		(6)
Foreign currency translation adjustment					17		17
Issuance of common stock for acquisition of MK Capital Advisors, LLC and contigent equity consideration, Shares
Issuance of common stock for acquisition of MK Capital Advisors, LLC and contigent equity consideration, Amount
Issuance of common stock, Shares
Issuance of common stock, Amount
Vesting of Restricted stock, Share
Vesting of Restricted stock, Amount
Share based payments
Dividends paid
Net income (loss)				(2,979)		86	(2,893)
Ending Balance, Shares at Sep. 30, 2014		15,977,482
Ending Balance, Amount at Sep. 30, 2014		$ 2	99,454	(9,590)	(627)	98	89,337
Begining Balance, Shares at Dec. 31, 2014		15,968,607
Begining Balance, Amount at Dec. 31, 2014		$ 2	110,598	(12,891)	(648)	18	97,079
Issuance of common stock on June 5, 2014 for cash, net of issuance costs of $215, Shares
Issuance of common stock on June 5, 2014 for cash, net of issuance costs of $215, Amount
Foregiveness of long-term debt on June 5, 2014 from the former Great American Group Members
Issuance of common stock for acquisition of B. Riley & Co., Inc. on June 18, 2014, Shares
Issuance of common stock for acquisition of B. Riley & Co., Inc. on June 18, 2014, Amount
B. Riley Financial, Inc. common stock owned by B. Riley & Co., Inc. - cancelled upon acquisition, Shares
B. Riley Financial, Inc. common stock owned by B. Riley & Co., Inc. - cancelled upon acquisition, Amount
Unrealized loss on available for sale investments, net of tax benefit of $4
Foreign currency translation adjustment					(287)		(287)
Issuance of common stock for acquisition of MK Capital Advisors, LLC and contigent equity consideration, Shares		333,333
Issuance of common stock for acquisition of MK Capital Advisors, LLC and contigent equity consideration, Amount			$ 4,657				$ 4,657
Issuance of common stock, Shares		$ 3,296
Issuance of common stock, Amount			35				35
Vesting of Restricted stock, Share		6,216
Vesting of Restricted stock, Amount
Share based payments			$ 1,133				$ 1,133
Dividends paid				(4,241)			(4,241)
Net income (loss)				12,809		1,814	14,623
Ending Balance, Shares at Sep. 30, 2015		16,311,452
Ending Balance, Amount at Sep. 30, 2015		$ 2	$ 116,423	$ (4,323)	$ (935)	$ 1,832	$ 112,999