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Investment Securities - Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Unrealized gain (loss) on investment securities held at the end of the period	$ (6,675)	$ (2,098)	$ (24,145)	$ 1,516
Consolidated Entity Excluding Variable Interest Entities (VIE)
Marketable Securities [Line Items]
Net investment gain (loss)	(5,563)	(2,109)	(23,729)	2,022
Seed Investments
Marketable Securities [Line Items]
Net investment gain (loss)	(1,649)	(1,741)	(4,585)	113
Long-Term Cash Awards
Marketable Securities [Line Items]
Net investment gain (loss)	(3,987)	(357)	(19,192)	2,117
Other
Marketable Securities [Line Items]
Net investment gain (loss)	$ 73	$ (11)	$ 48	$ (208)

X

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

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Amount of unrealized gain (loss) on investment.

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