EQUITY SECURITIES PORTFOLIO INVESTMENT - Narrative (Details) $ in Thousands, £ in Millions			3 Months Ended		6 Months Ended
	Apr. 03, 2020 USD ($)	Apr. 03, 2020 GBP (£)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 03, 2020
Offsetting Liabilities [Line Items]
Fair value of investment			$ 52,853		$ 52,853		$ 61,608
Earnings on equity investment in joint venture			0	$ 42,085	0	$ 42,085
Net income including noncontrolling interests in subsidiaries			(18,779)	(61,503)	(9,332)	(134,769)
Net income attributable to noncontrolling interests in subsidiaries			0	14,013	0	14,013
Interest income, other			75	$ 73	146	151
Arix
Offsetting Liabilities [Line Items]
Fair value of investment			$ 42,200		$ 42,200
Arix | Arix
Offsetting Liabilities [Line Items]
Equity method investment ownership			26.00%		26.00%
MalinJ1
Offsetting Liabilities [Line Items]
Ownership percentage								63.90%
Earnings on equity investment in joint venture					$ 0	$ 42,100
MalinJ1 | MalinJ1
Offsetting Liabilities [Line Items]
Equity method investment ownership			41.00%		41.00%
Equity Securities
Offsetting Liabilities [Line Items]
Investment at fair value			$ 67,900		$ 67,900		$ 68,400
Option Agreement | Portfolio Companies
Offsetting Liabilities [Line Items]
Payments to acquire investments	$ 277,500	£ 223.9