Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) Segment		Dec. 31, 2020 USD ($)		Dec. 31, 2019 USD ($)
Accounting Standards Update and Change in Accounting Principle [Abstract]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2021
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
Accounting Standards Update [Extensible Enumeration]	us-gaap:AccountingStandardsUpdate201912Member
Revenue Recognition
Contract measurement period (in years)	3 years
Cash and Cash Equivalents
Cash	$ 81,133,000	[1]	$ 65,534,000	[1]	$ 52,480,000
Restricted Cash	1,056,000		1,050,000		$ 1,036,000
Investments
Impairment losses recognized	0		0
Concentration of Credit Risk
Allowance for doubtful accounts receivable	$ 0		0
Leases
Lease term	12 months
Business Segments
Number of operating segments (in segments) | Segment	1
Income Taxes
Cash savings generated by this election will be distributed to selling and converting shareholders upon realization (in hundredth)	85.00%
Percentage of cash tax savings in income tax if realizes company expects to benefit	15.00%
Percentage of estimated realizable tax benefit added to liability due under tax receivable agreement	85.00%
Cash savings generated by this election will increase additional paid-in capital	15.00%
Valuation allowance on deferred tax assets	$ 0		0
Foreign Currency
Other comprehensive losses (income) associated with foreign currency translation adjustments	$ (866,000)		$ 565,000
Equipment | Minimum
Property Plant and Equipment
Property and equipment, useful life (years)	3 years
Equipment | Maximum
Property Plant and Equipment
Property and equipment, useful life (years)	7 years
Internal-use Software Developments
Property Plant and Equipment
Property and equipment, useful life (years)	3 years

[1] Asset and liability amounts in parentheses represent the aggregated balances at December 31, 2021 and 2020 attributable to Pzena U.S. Best Ideas (GP), LLC, Pzena Global Best Ideas (GP), LLC, and Pzena Global Focused Value Fund which were variable interest entities as of December 31, 2021 and 2020, respectively.