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Investments - Gains and Losses Recognized in Gain (Loss) on Securities, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
(Loss) Gain on Securities [Line Items]
Net Unrealized Gains (Losses)			$ (33,315)	$ 2,442
Gain (Loss) on Securities, net	$ (20,885)	$ 6,245	(32,580)	7,624
Investments—Consolidated Investment Companies
(Loss) Gain on Securities [Line Items]
Net Unrealized Gains (Losses)	(12,395)	1,098	(17,583)	(805)
Net Realized Gains (Losses)	(1,016)	341	(1,478)	1,602
Gain (Loss) on Securities, net	(13,411)	1,439	(19,061)	797
Investments—Affiliates and Other
(Loss) Gain on Securities [Line Items]
Net Unrealized Gains (Losses)	(9,073)	1,665	(15,732)	3,247
Net Realized Gains (Losses)	1,599	3,141	2,213	3,580
Gain (Loss) on Securities, net	$ (7,474)	$ 4,806	$ (13,519)	$ 6,827

X

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Amount of realized and unrealized gain (loss) on investment.

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