Non-Controlling Interests (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Noncontrolling Interest [Line Items]
Net Income Attributable to Non-Controlling Interests	$ 11,916	$ 22,474	$ 27,583	$ 43,316
Non-Controlling Interests of Pzena Investment Management, LLC
Noncontrolling Interest [Line Items]
Net Income Attributable to Non-Controlling Interests	14,090	22,225	28,913	42,873
Non-Controlling Interests of Consolidated Subsidiaries
Noncontrolling Interest [Line Items]
Net Income Attributable to Non-Controlling Interests	$ (2,174)	$ 249	$ (1,330)	$ 443