UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
NET INCOME	$ 16,916	$ 19,447	$ 49,153	$ 54,470
OTHER COMPREHENSIVE LOSS
Foreign Currency Translation Adjustment	(104)	(27)	(114)	(90)
Total Other Comprehensive Loss	(104)	(27)	(114)	(90)
Comprehensive Income	16,812	19,420	49,039	54,380
Less: Comprehensive Income Attributable to Non-Controlling Interests	13,308	15,151	39,067	43,100
Total Comprehensive Income Attributable to Pzena Investment Management, Inc.	$ 3,504	$ 4,269	$ 9,972	$ 11,280