UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
NET INCOME	$ 16,295	$ 17,357	$ 32,237	$ 35,023
OTHER COMPREHENSIVE LOSS
Foreign Currency Translation Adjustment	(73)	(131)	(10)	(63)
Total Other Comprehensive Loss	(73)	(131)	(10)	(63)
Comprehensive Income	16,222	17,226	32,227	34,960
Less: Comprehensive Income Attributable to Non-Controlling Interests	12,839	13,720	25,759	27,949
Total Comprehensive Income Attributable to Pzena Investment Management, Inc.	$ 3,383	$ 3,506	$ 6,468	$ 7,011