SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional information (Details)		1 Months Ended			3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 19, 2022 USD ($)	Jul. 29, 2022 USD ($)	Dec. 31, 2021 USD ($) $ / shares shares	Jun. 30, 2018	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) $ / shares shares	Jun. 30, 2022 EUR (€)	May 31, 2022	Dec. 31, 2021 EUR (€) shares	Dec. 20, 2021 USD ($)	Dec. 01, 2021	Nov. 30, 2021
Accounting Policies [Line Items]
Interest expense from loan participations						$ 258,000		$ 726,000
Advertising costs					$ 2,594,000	578,000	$ 4,357,000	1,156,000
Market value percentage				85.00%
Recognized compensation expense					43,000	115,000	196,000	342,000
Restricted cash			$ 927,000		928,000		928,000		$ 927,000
Depreciation and amortization					1,021,000	1,031,000	2,053,000	1,904,000
Net of unamortized costs, origination fees, premiums and discounts			9,304,000		5,071,000		5,071,000		9,304,000
Unrealized gains (losses)					(10,985,000)	(680,000)	(129,000)	10,046,000
Loans receivable, at fair value			167,744,000		88,893,000		88,893,000		167,744,000
Partnership investment interests							78,965,000		77,383,000
Investment securities			59,745,000		84,280,000		84,280,000		59,745,000
Warrant liability			12,938,000		3,737,000		3,737,000		12,938,000
Fair value assets			2,613,177,000		2,098,005,000		2,098,005,000		2,613,177,000
Senior notes payable			1,606,560,000		1,644,678,000		1,644,678,000		1,606,560,000
Fair value			1,661,189,000		1,544,036,000		1,544,036,000		1,661,189,000
Forward exchange contracts | €										€ 0		€ 6,000,000
Transaction gains (losses)					834,000	(390,000)	1,130,000	166,000
Redemption value			345,000,000		352,894,000		352,894,000		345,000,000
Equity investments			$ 39,190,000		43,235,000		43,235,000		$ 39,190,000
Equity securities					850,000	133,453,000	850,000	133,453,000
Loan receivable amount								35,000,000
Debt securities issued								35,000,000
Notes issued								36,000,000
Agent fees							$ 12,088,000	25,382,000
Sold price per unit (in dollars per share) | $ / shares			$ 10.00						$ 10.00
Assets held in trust			$ 345,000,000						$ 345,000,000
Consummate business combination transaction term									24 months
Consummate business combination transaction term, circumstance based									27 months
BRPM 150
Accounting Policies [Line Items]
Gross proceeds									$ 172,500,000
BRPM 250
Accounting Policies [Line Items]
Gross proceeds									$ 172,500,000
FaZeClan Holdings, Inc | Subsequent Event
Accounting Policies [Line Items]
Funds held in trust account		$ 172,762,000
Decrease		$ 172,500,000
Common Class A
Accounting Policies [Line Items]
Exercise price per share (in dollars per share) | $ / shares			$ 11.50						$ 11.50
Minimum
Accounting Policies [Line Items]
Cash fee percentage							7.00%
Carried interest percentage							8.00%
Maximum
Accounting Policies [Line Items]
Cash fee percentage							10.00%
Carried interest percentage							15.00%
FocalPoint Securities, LLC ("FocalPoint")
Accounting Policies [Line Items]
Business combination, consideration transferred, equity	$ 20,320,000						$ 20,320,000
Business combination, deferred cash consideration							22,661,000
Lingo
Accounting Policies [Line Items]
Debt conversion, converted instrument, amount							17,500,000
Warrant
Accounting Policies [Line Items]
Warrant liability			$ 12,938,000		3,737,000		3,737,000		$ 12,938,000
IPO
Accounting Policies [Line Items]
Consummated units (in shares) | shares									17,250,000
IPO | Redeemable warrant
Accounting Policies [Line Items]
Class of warrant or right, number of securities called by each warrant or right (in shares) | shares			0.33						0.33			0.33
IPO | Common Class A
Accounting Policies [Line Items]
Class of warrant or right, number of securities called by each warrant or right (in shares) | shares			1						1			1
Significant unobservable inputs (Level 3)
Accounting Policies [Line Items]
Warrant liability			$ 0		0		0		$ 0
Fair value assets			1,250,735,000		1,104,756,000		1,104,756,000		1,250,735,000
W.S. Badcock Corporation
Accounting Policies [Line Items]
Cash													$ 400,000,000
Loans receivable, at fair value			400,000,000		309,355,000		309,355,000		400,000,000
Fair Value, Measurements, Recurring
Accounting Policies [Line Items]
Loans receivable carrying value			877,527,000		783,901,000		783,901,000		877,527,000
Loans receivable			$ 886,831,000		$ 788,972,000		$ 788,972,000		$ 886,831,000
Fair Value, Measurements, Recurring | Significant unobservable inputs (Level 3)
Accounting Policies [Line Items]
Percentage of total assets measured in Level 3 of the hierarchy level			21.40%		18.80%		18.80%		21.40%	18.80%		21.40%
Loans Receivable
Accounting Policies [Line Items]
Loans receivable fair value							$ 770,840,000		$ 873,186,000
Fixed Income Securities
Accounting Policies [Line Items]
Interest expense					$ 14,544,000	10,725,000	26,310,000	29,446,000
Forward Contracts
Accounting Policies [Line Items]
Net gain (loss) forward exchange contract					0	$ 363,000	68,000	$ 673,000
Lingo
Accounting Policies [Line Items]
Fair value of noncontrolling interest (in percentage)											20.00%
Redeemable noncontrolling interest, redemption value					$ 7,284,000		7,284,000
Net income (loss)							$ (127,000)
Great American Global Partners, LLC
Accounting Policies [Line Items]
Ownership, percentage					50.00%		50.00%			50.00%
Bebe Stores Inc. ("bebe")
Accounting Policies [Line Items]
Ownership, percentage			40.10%		40.10%		40.10%		40.10%	40.10%		40.10%		40.10%	39.50%
Additional purchase of shares (in shares) | shares			71,970
Additional purchase of value			$ 612,000