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Collaborative Arrangement, Rights and Obligations, Interest Accrual Percentage

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Collaborative Arrangement, Rights and Obligations, Milestone Payment

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Earnings on equity investment in joint venture

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Return on prepayment

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EQUITY SECURITIES PORTFOLIO INVESTMENT - Narrative (Details) £ in Thousands, $ in Thousands			3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 03, 2020 USD ($)	Apr. 03, 2020 GBP (£)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 GBP (£)	Apr. 30, 2022 USD ($)	Oct. 13, 2021 USD ($)	Oct. 13, 2021 GBP (£)	Dec. 03, 2020
Offsetting Liabilities [Line Items]
Fair value of investment			$ 126,345		$ 126,345		$ 361,778
Earnings on equity investment in joint venture			42,085	$ 7	42,085	$ 2,737
Net (loss) income including noncontrolling interests in subsidiaries			(61,503)	19,660	(134,769)	(144,805)
Net income attributable to noncontrolling interests in subsidiaries			14,013	$ 6	14,013	906
Interest receivable			300		300
Notes receivable, related parties										$ 4,000	£ 2,950
Interest income, other			73		151
MalinJ1
Offsetting Liabilities [Line Items]
Milestone payment			1,800		1,800				$ 40,000
Deferred milestone payment			1,200		1,200				$ 26,700
Interest accrual percentage									8.50%
Other Noncurrent Assets
Offsetting Liabilities [Line Items]
Notes receivable, related parties			3,800		3,800		4,000
Unsecured Debt
Offsetting Liabilities [Line Items]
Interest rate										8.00%	8.00%
Arix
Offsetting Liabilities [Line Items]
Fair value of investment			$ 38,900		$ 38,900
Arix \| Arix
Offsetting Liabilities [Line Items]
Equity method investment ownership			22.00%		22.00%
MalinJ1
Offsetting Liabilities [Line Items]
Ownership percentage												63.90%
Earnings on equity investment in joint venture			$ 42,100		$ 42,100	2,700
Net (loss) income including noncontrolling interests in subsidiaries					$ 0	1,800
Net income attributable to noncontrolling interests in subsidiaries						$ 906
MalinJ1 \| MalinJ1
Offsetting Liabilities [Line Items]
Equity method investment ownership			41.00%		41.00%
Equity Securities
Offsetting Liabilities [Line Items]
Investment at fair value			$ 155,900		$ 155,900		343,100
Option Agreement \| Portfolio Companies
Offsetting Liabilities [Line Items]
Payments to acquire investments	$ 277,500	£ 223,900
Net gain on prepaid investment							$ 2,800
Option Agreement \| Portfolio Companies \| United Kingdom, Pounds
Offsetting Liabilities [Line Items]
Return on prepayment \| £								£ 4,500
Proceeds from sale of debt securities \| £								£ 33