Non-Controlling Interests (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Noncontrolling Interest [Line Items]
Net Income Attributable to Non-Controlling Interests	$ 13,091	$ 23,635	$ 40,674	$ 66,951
Non-Controlling Interests of Pzena Investment Management, LLC
Noncontrolling Interest [Line Items]
Net Income Attributable to Non-Controlling Interests	13,887	23,385	42,800	66,258
Non-Controlling Interests of Consolidated Subsidiaries
Noncontrolling Interest [Line Items]
Net Income Attributable to Non-Controlling Interests	$ (796)	$ 250	$ (2,126)	$ 693