Investments - Summary of Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Summary of Investment Holdings [Line Items]
Investments owned	$ 535,204	$ 243,554
Seed capital
Summary of Investment Holdings [Line Items]
Investments owned	294,700	394,200
Equity securities: | Long-term incentive compensation-related
Summary of Investment Holdings [Line Items]
Investments owned	31,934	18,882
Equity securities: | Seed capital
Summary of Investment Holdings [Line Items]
Investments owned	169,502	128,771
Equity securities: | Other
Summary of Investment Holdings [Line Items]
Investments owned	388	0
Investments in limited partnership hedge funds: | Long-term incentive compensation-related
Summary of Investment Holdings [Line Items]
Investments owned	10,831	21,151
Investments in limited partnership hedge funds: | Seed capital
Summary of Investment Holdings [Line Items]
Investments owned	18,397	57,624
Investment in joint ventures
Summary of Investment Holdings [Line Items]
Investments owned	286,721	0
Time deposits
Summary of Investment Holdings [Line Items]
Investments owned	6,100	6,517
Other
Summary of Investment Holdings [Line Items]
Investments owned	$ 11,331	$ 10,609