CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
REVENUE	$ 27,945	$ 22,132	$ 54,346	$ 42,974
EXPENSES
Compensation and Benefits Expense	9,899	8,914	19,949	18,522
General and Administrative Expense	2,505	1,943	4,825	3,752
Total Operating Expenses	12,404	10,857	24,774	22,274
Operating Income	15,541	11,275	29,572	20,700
OTHER (EXPENSE)/ INCOME
Interest Income	10	27	25	54
Dividend Income	112	87	162	116
Net Realized and Unrealized Gain from Investments	410	414	514	1,265
Change in Liability to Selling and Converting Shareholders	(1,996)	(229)	(2,123)	(1,268)
Other Income/ (Expense)	56	(48)	(33)	(88)
Total Other (Expense)/ Income	(1,408)	251	(1,455)	79
Income Before Income Taxes	14,133	11,526	28,117	20,779
Income Tax (Benefit)/ Expense	(274)	1,234	1,409	796
Net Income	14,407	10,292	26,708	19,983
Less: Net Income Attributable to Non-Controlling Interests	12,283	9,026	23,136	17,548
Net Income Attributable to Pzena Investment Management, Inc.	2,124	1,266	3,572	2,435
Net Income for Basic Earnings per Share	2,124	1,266	3,572	2,435
Basic Earnings Per Share (in dollars per share)	$ 0.17	$ 0.10	$ 0.29	$ 0.21
Basic Weighted Average Shares Outstanding (in shares)	12,180,192	12,315,065	12,178,402	11,793,938
Net Income for Diluted Earnings per Share	$ 9,096	$ 6,358	$ 16,692	$ 12,268
Diluted Earnings per Share (in dollars per share)	$ 0.13	$ 0.10	$ 0.25	$ 0.18
Diluted Weighted Average Shares Outstanding (in shares)	67,998,237	66,562,823	68,021,135	66,550,266
Cash Dividends per Share of Class A Common Stock (in dollars per share)	$ 0.03	$ 0.03	$ 0.29	$ 0.19