RELATED PARTY TRANSACTIONS (Details) - USD ($)		1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 19, 2022	Mar. 31, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Apr. 25, 2022	Mar. 09, 2022	Jan. 03, 2022	Nov. 01, 2021
Related Party Transaction [Line Items]
Due from related party			$ 645,000		$ 645,000		$ 2,306,000
Interest expense			31,764,000	$ 20,856,000	62,200,000	$ 40,642,000
Loans receivable, at fair value			$ 88,893,000		$ 88,893,000		$ 167,744,000
Price per share acquired (in dollars per share)							$ 10.00
Common Class A | Subsequent Event | FaZeClan Holdings, Inc
Related Party Transaction [Line Items]
Shares acquired (in shares)	5,342,500
Price per share acquired (in dollars per share)	$ 10.00
Executive Officer's and Board of Directors
Related Party Transaction [Line Items]
Financial interest			48.10%		48.10%
Funds from Mananagement Fees
Related Party Transaction [Line Items]
Due from related party			$ 625,000		$ 625,000		$ 621,000
CA Global Partners, LLC
Related Party Transaction [Line Items]
Other operating expenses							1,635,000
B. Riley Partners Opportunity Fund
Related Party Transaction [Line Items]
Interest expense			0	133,000	0	479,000
Commissions trade Income			$ 0	92,000	$ 0	422,000
B. Riley Partners Opportunity Fund | Co-Chief Executive Officer
Related Party Transaction [Line Items]
Financial interest			27.30%		27.30%
Whitehawk Capital Partners, L.P.
Related Party Transaction [Line Items]
Management fees			$ 94,000	236,000	$ 1,173,000	1,446,000
Babcock and Wilcox
Related Party Transaction [Line Items]
Underwriting and financial advisory fees			11,000	1,710,000	$ 64,000	12,348,000
Written notice termination period					30 days
Services fees					$ 750,000
Performance fee		$ 1,000,000
The Arena Group Holdings, Inc.
Related Party Transaction [Line Items]
Loans receivable, at fair value			68,047,000		$ 68,047,000		69,835,000
Interest on loan payable percentage					10.00%
Revenue from related parties			2,000		$ 2,023,000
California Natural Resources Group, LLC
Related Party Transaction [Line Items]
Loans receivable, at fair value											$ 34,393,000
Interest bears											10.00%
California Natural Resources Group, LLC | Indirect Guarantee of Indebtedness
Related Party Transaction [Line Items]
Debt and lease obligation										$ 10,375,000
Faze Clan, Inc
Related Party Transaction [Line Items]
Loans receivable, at fair value								$ 10,000,000	$ 10,000,000
Other Related Party
Related Party Transaction [Line Items]
Loans receivable, at fair value			500,000		500,000		$ 4,201,000
Underwriting and financial advisory and other fees			$ 2,156,000	$ 1,234,000	$ 4,036,000	$ 2,957,000