Consolidated Company-Sponsored Investment Funds - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) investment	Dec. 31, 2020 USD ($)
Derivative [Line Items]
Cash collateral payable to trade counterparties	$ 2,900	$ 400
Cash collateral received	5,600	6,400
Maximum risk of loss in investment in VIEs	8,800	7,100
Institutional investment advisory and services fees receivable	$ 185,653	148,746
Seed capital
Derivative [Line Items]
Number of deconsolidated funds | investment	4
Investment owned at fair value, deconsolidated amount		93,900
VIEs
Derivative [Line Items]
Futures, forwards and swaps held	$ 12,500	3,700
Gains (losses) on derivatives	(700)	(600)
Cash collateral payable to trade counterparties	904	513
Cash collateral received	1,800	4,200
VOEs
Derivative [Line Items]
Futures, forwards and swaps held	0	200
Gains (losses) on derivatives	0	200
Cash collateral payable to trade counterparties	0	0
Cash collateral received	0	100
Variable Interest Entity, Not Primary Beneficiary
Derivative [Line Items]
Net assets	68,900,000	73,400,000
Institutional investment advisory and services fees receivable	$ 75,700	$ 77,600