Investment Strategy	Jun. 28, 2025
Pzena Mid Cap Value Fund
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	Under normal market conditions, the Mid Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of “mid-cap” companies. The Fund defines a “mid-cap” company as an issuer whose market capitalization at the time of initial purchase, is in the range of those found in the Russell Midcap® Index (“mid cap companies”). As of May 31, 2025, the market capitalization of companies in the Russell Midcap® Index ranged from $185.2 million to $298.2 billion. The Fund may continue to hold a company with a market capitalization that appreciates above or depreciates below the market capitalization threshold and thus may from time to time hold less than 80% of its net assets in equity securities of mid-cap companies. In managing the Fund’s assets, the Adviser will follow a classic value strategy. The Fund’s portfolio will generally consist of 30 to 80 stocks identified through a research-driven, bottom-up security selection process based on thorough fundamental research. The Fund seeks to invest in mid cap company stocks that, in the opinion of the Adviser, sell at a substantial discount to their intrinsic value but have solid long-term prospects. Though the Fund primarily invests in U.S. companies, it may also invest up to 20% of its net assets in shares of foreign companies, through American Depositary Receipts (“ADRs”) or dollar-denominated foreign securities. The Fund’s investments in foreign securities may include investments in emerging markets securities. The Fund may also invest in real estate investment trusts (“REITs”). The Fund may also invest up to 10% of its net assets in limited partnerships and master limited partnerships (“MLPs”). From time to time, the Fund may invest, to a significant extent, in securities of companies in the same economic sector. In evaluating an investment for purchase by the Mid Cap Fund, the Adviser conducts a thorough fundamental assessment of the business, with a focus on those challenges that have created the value opportunity. The Adviser examines material issues that can influence the company’s long-term performance and risk profile. As a part of this process, the Adviser speaks with competitors, customers, and suppliers; conducts field research such as site visits to plants, stores, or other facilities; analyzes the financials and public filings of the company and its competitors; focuses on the company’s underlying financial condition and business prospects considering estimated earnings, economic conditions, degree of competitive or pricing pressures, the experience and competence of management; and integrates environmental, social and governance (“ESG”) considerations, which can vary across companies and industries (ESG considerations may include, but are not limited to, environmental impact, corporate governance and ethical business practices). The Adviser believes that assessing the potential impact of ESG issues on a company is critical to the investment process, both in terms of downside risk analysis and assessing future earnings upside potential. While ESG-related issues are analyzed for each company before and during ownership, the evaluation of all key investment considerations, including ESG issues, is company-specific. Each is analyzed internally, discussed with company management and industry experts and monitored. The Adviser evaluates all issues head-on, takes a view as to whether the company can remediate them, and will actively engage management, if necessary, if it decides to become shareholders. The Adviser believes that investing in times of controversy can result in significant future upside, assuming the risks and turnaround potential are appropriately analyzed and, where possible, priced in at the point of investment. Consequently, no one issue, ESG-related or otherwise, necessarily disqualifies a company from investment, and no individual characteristic must be present prior to investment. Each step of this process contributes to the Adviser’s determination of whether to invest and at what position size. Once an investment has been made, the Adviser continues to engage with the company on an ongoing basis to exert a constructive, long-term oriented influence on the trajectory of the company. The Adviser’s sell discipline is guided by the same process with which the Adviser originally screens the investment universe. The Adviser typically sells a security when it reaches what the Adviser judges to be fair value, there are more attractive opportunities or there is a change in company fundamentals.
Strategy Portfolio Concentration [Text]	Under normal market conditions, the Mid Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of “mid-cap” companies.
Pzena Small Cap Value Fund
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	Under normal market conditions, the Small Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of “small-cap” companies. The Fund defines a “small-cap” company as an issuer whose market capitalization at the time of initial purchase, is in the range of those found in the Russell 2000® Index during the most recent 11-month period (based on month-end data) plus the most recent data during the current month (“small cap companies”). As of May 31, 2025, the market capitalization of companies in the Russell 2000® Index ranged from $2.46 million to $16.91 billion. The Fund may continue to hold a company with a market capitalization that appreciates above or depreciates below the market capitalization threshold and thus may from time to time hold less than 80% of its net assets in equity securities of small-cap companies. In managing the Fund’s assets, the Adviser will follow a classic value strategy. The Fund’s portfolio will generally consist of 40 to 90 stocks identified through a research-driven, bottom-up security selection process based on thorough fundamental research. The Fund seeks to invest in small-cap company stocks that, in the opinion of the Adviser, sell at a substantial discount to their intrinsic value but have solid long-term prospects. Though the Fund primarily invests in U.S. companies, it may also invest up to 20% of its net assets in shares of foreign securities, through American Depositary Receipts (“ADRs”) or dollar-denominated foreign securities. The Fund’s investments in foreign securities may include investments in emerging market securities. The Fund may also invest in real estate investment trusts (“REITs”). The Fund may also invest up to 10% of its net assets in limited partnerships and master limited partnerships (“MLPs”). From time to time, the Fund may invest, to a significant extent, in securities of companies in the same economic sector. In evaluating an investment for purchase by the Small Cap Fund, the Adviser conducts a thorough fundamental assessment of the business, with a focus on those challenges that have created the value opportunity. The Adviser examines material issues that can influence the company’s long-term performance and risk profile. As a part of this process, the Adviser speaks with competitors, customers, and suppliers; conducts field research such as site visits to plants, stores, or other facilities; analyzes the financials and public filings of the company and its competitors; focuses on the company’s underlying financial condition and business prospects considering estimated earnings, economic conditions, degree of competitive or pricing pressures, the experience and competence of management; and integrates environmental, social and governance (“ESG”) considerations, which can vary across companies and industries (ESG considerations may include, but are not limited to, environmental impact, corporate governance and ethical business practices). The Adviser believes that assessing the potential impact of ESG issues on a company is critical to the investment process, both in terms of downside risk analysis and assessing future earnings upside potential. While ESG-related issues are analyzed for each company before and during ownership, the evaluation of all key investment considerations, including ESG issues, is company-specific. Each is analyzed internally, discussed with company management and industry experts and monitored. The Adviser evaluates all issues head-on, takes a view as to whether the company can remediate them, and will actively engage management, if necessary, if it decides to become shareholders. The Adviser believes that investing in times of controversy can result in significant future upside, assuming the risks and turnaround potential are appropriately analyzed and, where possible, priced in at the point of investment. Consequently, no one issue, ESG-related or otherwise, necessarily disqualifies a company from investment, and no individual characteristic must be present prior to investment. Each step of this process contributes to the Adviser’s determination of whether to invest and at what position size. Once an investment has been made, the Adviser continues to engage with the company on an ongoing basis to exert a constructive, long-term oriented influence on the trajectory of the company. The Adviser’s sell discipline is guided by the same process with which the Adviser originally screens the investment universe. The Adviser typically sells a security when it reaches what the Adviser judges to be fair value, there are more attractive opportunities or there is a change in company fundamentals.
Strategy Portfolio Concentration [Text]	Under normal market conditions, the Small Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of “small-cap” companies.
Pzena Emerging Markets Value Fund
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	Under normal market conditions, the Emerging Markets Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of companies located in emerging market and pre-emerging market countries. Emerging market companies are generally located in, or operating within, newly industrialized countries or countries in the beginning stages of development, such as most countries in Africa, Asia, Latin America, the Middle East and Eastern Europe. The Fund may also invest in “frontier” markets, which are considered pre-emerging market countries. This includes companies located in, or primarily operating from, countries in the Morgan Stanley Capital International (“MSCI”) Emerging Markets Index and/or MSCI Frontier Emerging Markets Index. The Adviser determines a company’s country by referring to: its stock exchange listing; where it is registered, organized or incorporated; where its headquarters are located; its MSCI country classification; where it derives at least 50% of its revenues or profits from goods produced or sold, investments made, or services performed; or where at least 50% of its assets are located. In managing the Fund’s assets, the Adviser will follow a classic value strategy. The Fund’s portfolio will generally consist of 40 to 80 stocks identified through a research-driven, bottom-up security selection process based on thorough fundamental research. The Fund seeks to invest in stocks that, in the opinion of the Adviser, sell at a substantial discount to their intrinsic value but have solid long-term prospects. The Fund may gain exposure to emerging market companies by purchasing equity securities in the form of depositary receipts, such as American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs) and Global Depositary Receipts (“GDRs”). The Fund may also invest in real estate investment trusts (“REITs”), including foreign real estate companies operating in emerging markets. From time to time, the Fund may invest, to a significant extent, in securities of companies in the same economic sector. As of February 28, 2025, 27.1% of the Fund’s total investments were invested in the financial services sector. In evaluating an investment for purchase by the Emerging Markets Fund, the Adviser conducts a thorough fundamental assessment of the business, with a focus on those challenges that have created the value opportunity. The Adviser examines material issues that can influence the company’s long-term performance and risk profile. As a part of this process, the Adviser speaks with competitors, customers, and suppliers; conducts field research such as site visits to plants, stores, or other facilities; analyzes the financials and public filings of the company and its competitors; focuses on the company’s underlying financial condition and business prospects considering estimated earnings, economic conditions, degree of competitive or pricing pressures, the experience and competence of management; and integrates environmental, social and governance (“ESG”) considerations, which can vary across companies and industries (ESG considerations may include, but are not limited to, environmental impact, corporate governance and ethical business practices). The Adviser believes that assessing the potential impact of ESG issues on a company is critical to the investment process, both in terms of downside risk analysis and assessing future earnings upside potential. While ESG-related issues are analyzed for each company before and during ownership, the evaluation of all key investment considerations, including ESG issues, is company-specific. Each is analyzed internally, discussed with company management and industry experts and monitored. The Adviser evaluates all issues head-on, takes a view as to whether the company can remediate them, and will actively engage management, if necessary, if it decides to become shareholders. The Adviser believes that investing in times of controversy can result in significant future upside, assuming the risks and turnaround potential are appropriately analyzed and, where possible, priced in at the point of investment. Consequently, no one issue, ESG-related or otherwise, necessarily disqualifies a company from investment, and no individual characteristic must be present prior to investment. Each step of this process contributes to the Adviser’s determination of whether to invest and at what position size. Once an investment has been made, the Adviser continues to engage with the company on an ongoing basis to exert a constructive, long-term oriented influence on the trajectory of the company. The Adviser’s sell discipline is guided by the same process with which the Adviser originally screens the investment universe. The Adviser typically sells a security when it reaches what the Adviser judges to be fair value, there are more attractive opportunities or there is a change in company fundamentals.
Strategy Portfolio Concentration [Text]	Under normal market conditions, the Emerging Markets Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of companies located in emerging market and pre-emerging market countries.
Pzena International Small Cap Value Fund
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	Under normal market conditions the International Small Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks of small-cap companies located in Developed Markets outside the U.S. The Fund defines a “small-cap” company as an issuer whose market capitalization at the time of initial purchase is in the range of those found in the MSCI World ex USA Small Cap Index (the “Small Cap Index”), during the most recent 11-month period (based on month-end data) plus the most recent data during the current month (“small cap companies”). As of May 31, 2025, the market capitalization of companies in the MSCI World ex USA Small Cap Index ranged from $118.68 million to $97.7 billion. The Fund may continue to hold a company with a market capitalization that appreciates above or depreciates below the market capitalization threshold and thus may from time to time hold less than 80% of its total assets in equity securities of small-cap companies. The Fund defines “Developed Markets” primarily as those classified as developed by Morgan Stanley Capital International (“MSCI”). The Adviser determines a company’s country by referring to: its stock exchange listing; where it is registered, organized or incorporated; where its headquarters are located; its MSCI country classification; where it derives at least 50% of its revenues or profits from goods produced or sold, investments made, or services performed; or where at least 50% of its assets are located. In managing the Fund’s assets, the Adviser will follow a classic value strategy. The Fund’s portfolio will generally consist of 40 to 90 stocks identified through a research-driven, bottom-up security selection process based on thorough fundamental research. The Fund seeks to invest in stocks that, in the opinion of the Adviser, sell at a substantial discount to their intrinsic value but have solid long-term prospects. The Fund may gain exposure to Developed Markets, emerging market, and frontier market companies by purchasing equity securities in the form of depositary receipts, such as American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs) and Global Depositary Receipts (“GDRs”). The Fund may also invest in real estate investment trusts (“REITs”), foreign real estate companies, emerging market and frontier market securities, limited partnerships, and master limited partnerships (“MLPs”) (limited partnerships in which the ownership units are publicly traded). The Fund may invest in a wide range of industries. However, from time to time, the Fund may invest, to a significant extent, in securities of companies in the same economic sector. In evaluating an investment for purchase by the International Small Cap Fund, the Adviser conducts a thorough fundamental assessment of the business, with a focus on those challenges that have created the value opportunity. The Adviser examines material issues that can influence the company’s long-term performance and risk profile. As a part of this process, the Adviser speaks with competitors, customers, and suppliers; conducts field research such as site visits to plants, stores, or other facilities; analyzes the financials and public filings of the company and its competitors; focuses on the company’s underlying financial condition and business prospects considering estimated earnings, economic conditions, degree of competitive or pricing pressures, the experience and competence of management; and integrates environmental, social and governance (“ESG”) considerations, which can vary across companies and industries (ESG considerations may include, but are not limited to, environmental impact, corporate governance and ethical business practices). The Adviser believes that assessing the potential impact of ESG issues on a company is critical to the investment process, both in terms of downside risk analysis and assessing future earnings upside potential. While ESG-related issues are analyzed for each company before and during ownership, the evaluation of all key investment considerations, including ESG issues, is company-specific. Each is analyzed internally, discussed with company management and industry experts and monitored. The Adviser evaluates all issues head-on, takes a view as to whether the company can remediate them, and will actively engage management, if necessary, if it decides to become shareholders. The Adviser believes that investing in times of controversy can result in significant future upside, assuming the risks and turnaround potential are appropriately analyzed and, where possible, priced in at the point of investment. Consequently, no one issue, ESG-related or otherwise, necessarily disqualifies a company from investment, and no individual characteristic must be present prior to investment. Each step of this process contributes to the Adviser’s determination of whether to invest and at what position size. Once an investment has been made, the Adviser continues to engage with the company on an ongoing basis to exert a constructive, long-term oriented influence on the trajectory of the company. The Adviser’s sell discipline is guided by the same process with which the Adviser originally screens the investment universe. The Adviser typically sells a security when it reaches what the Adviser judges to be fair value, there are more attractive opportunities or there is a change in company fundamentals.
Strategy Portfolio Concentration [Text]	Under normal market conditions the International Small Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks of small-cap companies located in Developed Markets outside the U.S.
Pzena International Value Fund
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	Under normal market conditions the International Value Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks of Developed Market companies, not including U.S. companies. The Fund defines “Developed Markets” primarily as those classified as developed by Morgan Stanley Capital International (“MSCI”). The Adviser determines a company’s country by referring to: its stock exchange listing; where it is registered, organized or incorporated; where its headquarters are located; its MSCI country classification; where it derives at least 50% of its revenues or profits from goods produced or sold, investments made, or services performed; or where at least 50% of its assets are located. In managing the Fund’s assets, the Adviser will follow a classic value strategy. The Fund’s portfolio will generally consist of 60 to 80 stocks identified through a research-driven, bottom-up security selection process based on thorough fundamental research. The Fund seeks to invest in stocks that, in the opinion of the Adviser, sell at a substantial discount to their intrinsic value but have solid long-term prospects. The Fund may gain exposure to Developed Markets and emerging market companies by purchasing equity securities directly or in the form of depositary receipts, such as American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs) and Global Depositary Receipts (“GDRs”). The Fund may invest up to 15% of its net assets in emerging market and frontier market securities. The Fund may also invest in real estate investment trusts (“REITs”), foreign real estate companies, and up to 10% of its net assets in limited partnerships, and master limited partnerships (“MLPs”) (limited partnerships in which the ownership units are publicly traded). The Fund may invest in a wide range of industries. However, from time to time, the Fund may invest, to a significant extent, in securities of companies in the same economic sector. As of February 28, 2025, 27.9% of the Fund’s total investments were invested in the financial services sector. In evaluating an investment for purchase by the International Value Fund, the Adviser conducts a thorough fundamental assessment of the business, with a focus on those challenges that have created the value opportunity. The Adviser examines material issues that can influence the company’s long-term performance and risk profile. As a part of this process, the Adviser speaks with competitors, customers, and suppliers; conducts field research such as site visits to plants, stores, or other facilities; analyzes the financials and public filings of the company and its competitors; focuses on the company’s underlying financial condition and business prospects considering estimated earnings, economic conditions, degree of competitive or pricing pressures, the experience and competence of management; and integrates environmental, social and governance (“ESG”) considerations, which can vary across companies and industries (ESG considerations may include, but are not limited to, environmental impact, corporate governance and ethical business practices). The Adviser believes that assessing the potential impact of ESG issues on a company is critical to the investment process, both in terms of downside risk analysis and assessing future earnings upside potential. While ESG-related issues are analyzed for each company before and during ownership, the evaluation of all key investment considerations, including ESG issues, is company-specific. Each is analyzed internally, discussed with company management and industry experts and monitored. The Adviser evaluates all issues head-on, takes a view as to whether the company can remediate them, and will actively engage management, if necessary, if it decides to become shareholders. The Adviser believes that investing in times of controversy can result in significant future upside, assuming the risks and turnaround potential are appropriately analyzed and, where possible, priced in at the point of investment. Consequently, no one issue, ESG-related or otherwise, necessarily disqualifies a company from investment, and no individual characteristic must be present prior to investment. Each step of this process contributes to the Adviser’s determination of whether to invest and at what position size. Once an investment has been made, the Adviser continues to engage with the company on an ongoing basis to exert a constructive, long-term oriented influence on the trajectory of the company. The Adviser’s sell discipline is guided by the same process with which the Adviser originally screens the investment universe. The Adviser typically sells a security when it reaches what the Adviser judges to be fair value, there are more attractive opportunities or there is a change in company fundamentals.
Strategy Portfolio Concentration [Text]	Under normal market conditions the International Value Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks of Developed Market companies, not including U.S. companies.

Investment Strategy

Jun. 28, 2025

Principal Investment Strategies

Under normal market conditions, the Mid Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of “mid-cap” companies. The Fund defines a “mid-cap” company as an issuer whose market capitalization at the time of initial purchase, is in the range of those found in the Russell Midcap® Index (“mid cap companies”). As of May 31, 2025, the market capitalization of companies in the Russell Midcap® Index ranged from $185.2 million to $298.2 billion. The Fund may continue to hold a company with a market capitalization that appreciates above or depreciates below the market capitalization threshold and thus may from time to time hold less than 80% of its net assets in equity securities of mid-cap companies.

In managing the Fund’s assets, the Adviser will follow a classic value strategy. The Fund’s portfolio will generally consist of 30 to 80 stocks identified through a research-driven, bottom-up security selection process based on thorough fundamental research. The Fund seeks to invest in mid cap company stocks that, in the opinion of the Adviser, sell at a substantial discount to their intrinsic value but have solid long-term prospects. Though the Fund primarily invests in U.S. companies, it may also invest up to 20% of its net assets in shares of foreign companies, through American Depositary Receipts (“ADRs”) or dollar-denominated foreign securities. The Fund’s investments in foreign securities may include investments in emerging markets securities. The Fund may also invest in real estate investment trusts (“REITs”). The Fund may also invest up to 10% of its net assets in limited partnerships and master limited partnerships (“MLPs”). From time to time, the Fund may invest, to a significant extent, in securities of companies in the same economic sector.

In evaluating an investment for purchase by the Mid Cap Fund, the Adviser conducts a thorough fundamental assessment of the business, with a focus on those challenges that have created the value opportunity. The Adviser examines material issues that can influence the company’s long-term performance and risk profile. As a part of this process, the Adviser speaks with competitors, customers, and suppliers; conducts field research such as site visits to plants, stores, or other facilities; analyzes the financials and public filings of the company and its competitors; focuses on the company’s underlying financial condition and business prospects considering estimated earnings, economic conditions, degree of competitive or pricing pressures, the experience and competence of management; and integrates

environmental, social and governance (“ESG”) considerations, which can vary across companies and industries (ESG considerations may include, but are not limited to, environmental impact, corporate governance and ethical business practices). The Adviser believes that assessing the potential impact of ESG issues on a company is critical to the investment process, both in terms of downside risk analysis and assessing future earnings upside potential.

While ESG-related issues are analyzed for each company before and during ownership, the evaluation of all key investment considerations, including ESG issues, is company-specific. Each is analyzed internally, discussed with company management and industry experts and monitored. The Adviser evaluates all issues head-on, takes a view as to whether the company can remediate them, and will actively engage management, if necessary, if it decides to become shareholders. The Adviser believes that investing in times of controversy can result in significant future upside, assuming the risks and turnaround potential are appropriately analyzed and, where possible, priced in at the point of investment. Consequently, no one issue, ESG-related or otherwise, necessarily disqualifies a company from investment, and no individual characteristic must be present prior to investment.

Each step of this process contributes to the Adviser’s determination of whether to invest and at what position size. Once an investment has been made, the Adviser continues to engage with the company on an ongoing basis to exert a constructive, long-term oriented influence on the trajectory of the company.

The Adviser’s sell discipline is guided by the same process with which the Adviser originally screens the investment universe. The Adviser typically sells a security when it reaches what the Adviser judges to be fair value, there are more attractive opportunities or there is a change in company fundamentals.

Strategy Portfolio Concentration [Text]

Under normal market conditions, the Mid Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of “mid-cap” companies.

Pzena Small Cap Value Fund

Prospectus [Line Items]

Strategy [Heading]

Principal Investment Strategies

Strategy Narrative [Text Block]

Under normal market conditions, the Small Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of “small-cap” companies. The Fund defines a “small-cap” company as an issuer whose market capitalization at the time of initial purchase, is in the range of those found in the Russell 2000® Index during the most recent 11-month period (based on month-end data) plus the most recent data during the current month (“small cap companies”). As of May 31, 2025, the market capitalization of companies in the Russell 2000® Index ranged from $2.46 million to $16.91 billion. The Fund may continue to hold a company with a market capitalization that appreciates above or depreciates below the market capitalization threshold and thus may from time to time hold less than 80% of its net assets in equity securities of small-cap companies.

In managing the Fund’s assets, the Adviser will follow a classic value strategy. The Fund’s portfolio will generally consist of 40 to 90 stocks identified through a research-driven, bottom-up security selection process based on thorough fundamental research. The Fund seeks to invest in small-cap company stocks that, in the opinion of the Adviser, sell at a substantial discount to their intrinsic value but have solid long-term prospects. Though the Fund primarily invests in U.S. companies, it may also invest up to 20% of its net assets in shares of foreign securities, through American Depositary Receipts (“ADRs”) or dollar-denominated foreign securities. The Fund’s investments in foreign securities may include investments in emerging market securities. The Fund may also invest in real estate investment trusts (“REITs”). The Fund may also invest up to 10% of its net assets in limited partnerships and master limited partnerships (“MLPs”). From time to time, the Fund may invest, to a significant extent, in securities of companies in the same economic sector.

In evaluating an investment for purchase by the Small Cap Fund, the Adviser conducts a thorough fundamental assessment of the business, with a focus on those challenges that have created the value opportunity. The Adviser examines material issues that can influence the company’s long-term performance and risk profile. As a part of this process, the Adviser speaks with competitors, customers, and suppliers; conducts field research such as site visits to plants, stores, or other facilities; analyzes the financials and public filings of the company and its competitors; focuses on the company’s underlying financial condition and business prospects considering estimated earnings, economic conditions, degree

of competitive or pricing pressures, the experience and competence of management; and integrates environmental, social and governance (“ESG”) considerations, which can vary across companies and industries (ESG considerations may include, but are not limited to, environmental impact, corporate governance and ethical business practices). The Adviser believes that assessing the potential impact of ESG issues on a company is critical to the investment process, both in terms of downside risk analysis and assessing future earnings upside potential.

Strategy Portfolio Concentration [Text]

Under normal market conditions, the Small Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of “small-cap” companies.

Pzena Emerging Markets Value Fund

Prospectus [Line Items]

Strategy [Heading]

Principal Investment Strategies

Strategy Narrative [Text Block]

Under normal market conditions, the Emerging Markets Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of companies located in emerging market and pre-emerging market countries. Emerging market companies are generally located in, or operating within, newly industrialized countries or countries in the beginning stages of development, such as most countries in Africa, Asia, Latin America, the Middle East and Eastern Europe. The Fund may also invest in “frontier” markets, which are considered pre-emerging market countries. This includes companies located in, or primarily operating from, countries in the Morgan Stanley Capital International (“MSCI”) Emerging Markets Index and/or MSCI Frontier Emerging Markets Index. The Adviser determines a company’s country by referring to: its stock exchange listing; where it is registered, organized or incorporated; where its headquarters are located; its MSCI country classification; where it derives at least 50% of its revenues or profits from goods produced or sold, investments made, or services performed; or where at least 50% of its assets are located.

In managing the Fund’s assets, the Adviser will follow a classic value strategy. The Fund’s portfolio will generally consist of 40 to 80 stocks identified through a research-driven, bottom-up security selection process based on thorough fundamental research. The Fund seeks to invest in stocks that, in the opinion of the Adviser, sell at a substantial discount to their intrinsic value but have solid long-term prospects. The Fund may gain exposure to emerging market companies by purchasing equity securities in the form of depositary receipts, such as American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs) and Global Depositary Receipts (“GDRs”). The Fund may also invest in real estate investment trusts (“REITs”), including foreign real estate companies operating in emerging markets. From time to time, the Fund may invest, to a significant extent, in securities of companies in the same economic sector. As of February 28, 2025, 27.1% of the Fund’s total investments were invested in the financial services sector.

In evaluating an investment for purchase by the Emerging Markets Fund, the Adviser conducts a thorough fundamental assessment of the business, with a focus on those challenges that have created the value opportunity. The Adviser examines material issues that can influence the company’s long-term performance and risk profile. As a part of this process, the Adviser speaks with competitors, customers, and suppliers; conducts field research such as site visits to plants, stores, or other facilities; analyzes the financials and public filings of the company and its competitors; focuses on the company’s underlying financial condition and business prospects considering estimated earnings, economic conditions, degree of competitive or pricing pressures, the experience and competence of management; and integrates environmental, social and governance (“ESG”) considerations, which can vary across companies and industries (ESG considerations may include, but are not limited to, environmental impact, corporate governance and ethical business practices). The Adviser believes that assessing the potential impact of

ESG issues on a company is critical to the investment process, both in terms of downside risk analysis and assessing future earnings upside potential.

Strategy Portfolio Concentration [Text]

Pzena International Small Cap Value Fund

Prospectus [Line Items]

Strategy [Heading]

Principal Investment Strategies

Strategy Narrative [Text Block]

Under normal market conditions the International Small Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks of small-cap companies located in Developed Markets outside the U.S. The Fund defines a “small-cap” company as an issuer whose market capitalization at the time of initial purchase is in the range of those found in the MSCI World ex USA Small Cap Index (the “Small Cap Index”), during the most recent 11-month period (based on month-end data) plus the most recent data during the current month (“small cap companies”). As of May 31, 2025, the market capitalization of companies in the MSCI World ex USA Small Cap Index ranged from $118.68 million to $97.7 billion. The Fund may continue to hold a company with a market capitalization that appreciates above or depreciates below the market capitalization threshold and thus may from time to time hold less than 80% of its total assets in equity securities of small-cap companies. The Fund defines “Developed Markets” primarily as those classified as developed by Morgan Stanley Capital International (“MSCI”). The Adviser determines a company’s country by referring to: its stock exchange listing; where it is registered, organized or incorporated; where its headquarters are located; its MSCI country classification; where it derives at least 50% of its revenues or profits from goods produced or sold, investments made, or services performed; or where at least 50% of its assets are located.

In managing the Fund’s assets, the Adviser will follow a classic value strategy. The Fund’s portfolio will generally consist of 40 to 90 stocks identified through a research-driven, bottom-up security selection process based on thorough fundamental research. The Fund seeks to invest in stocks that, in the opinion of the Adviser, sell at a substantial discount to their intrinsic value but have solid long-term prospects. The Fund may gain exposure to Developed Markets, emerging market, and frontier market companies by purchasing equity securities in the form of depositary receipts, such as American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs) and Global Depositary Receipts (“GDRs”). The Fund may also invest in real estate investment trusts (“REITs”), foreign real estate companies, emerging market and frontier market securities, limited partnerships, and master limited partnerships (“MLPs”) (limited partnerships in which the ownership units are publicly traded). The Fund may invest in a wide range of industries. However, from time to time, the Fund may invest, to a significant extent, in securities of companies in the same economic sector.

In evaluating an investment for purchase by the International Small Cap Fund, the Adviser conducts a thorough fundamental assessment of the business, with a focus on those challenges that have created the value opportunity. The Adviser examines material issues that can influence the company’s long-term performance and risk profile. As a part of this process, the Adviser speaks with competitors, customers, and suppliers; conducts field research such as site visits to plants, stores, or other facilities; analyzes the financials and public filings of the company and its competitors; focuses on the company’s underlying financial condition and business prospects considering estimated earnings, economic conditions, degree of competitive or pricing pressures, the experience and competence of management; and integrates environmental, social and governance (“ESG”) considerations, which can vary across companies and industries (ESG considerations may include, but are not limited to, environmental impact, corporate governance and ethical business practices). The Adviser believes that assessing the potential impact of ESG issues on a company is critical to the investment process, both in terms of downside risk analysis and assessing future earnings upside potential.

Strategy Portfolio Concentration [Text]

Pzena International Value Fund

Prospectus [Line Items]

Strategy [Heading]

Principal Investment Strategies

Strategy Narrative [Text Block]

Under normal market conditions the International Value Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in common stocks of Developed Market companies, not including U.S. companies. The Fund defines “Developed Markets” primarily as those classified as developed by Morgan Stanley Capital International (“MSCI”). The Adviser determines a company’s country by referring to: its stock exchange listing; where it is registered, organized or incorporated; where its headquarters are located; its MSCI country classification; where it derives at least 50% of its revenues or profits from goods produced or sold, investments made, or services performed; or where at least 50% of its assets are located.

In managing the Fund’s assets, the Adviser will follow a classic value strategy. The Fund’s portfolio will generally consist of 60 to 80 stocks identified through a research-driven, bottom-up security selection process based on thorough fundamental research. The Fund seeks to invest in stocks that, in the opinion of the Adviser, sell at a substantial discount to their intrinsic value but have solid long-term prospects. The Fund may gain exposure to Developed Markets and emerging market companies by purchasing equity securities directly or in the form of depositary receipts, such as American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs) and Global Depositary Receipts (“GDRs”). The Fund may invest up to 15% of its net assets in emerging market and frontier market securities. The Fund may also invest in real estate investment trusts (“REITs”), foreign real estate companies, and up to 10% of its net assets in limited partnerships, and master limited partnerships (“MLPs”) (limited partnerships in which the ownership units are publicly traded). The Fund may invest in a wide range of industries. However, from time to time, the Fund may invest, to a significant extent, in securities of companies in the same economic sector. As of February 28, 2025, 27.9% of the Fund’s total investments were invested in the financial services sector.

In evaluating an investment for purchase by the International Value Fund, the Adviser conducts a thorough fundamental assessment of the business, with a focus on those challenges that have created the value opportunity. The Adviser examines material issues that can influence the company’s long-term performance and risk profile. As a part of this process, the Adviser speaks with competitors, customers, and suppliers; conducts field research such as site visits to plants, stores, or other facilities; analyzes the financials and public filings of the company and its competitors; focuses on the company’s underlying financial condition and business prospects considering estimated earnings, economic conditions, degree of competitive or pricing pressures, the experience and competence of management; and integrates environmental, social and governance (“ESG”) considerations, which can vary across companies and industries (ESG considerations may include, but are not limited to, environmental impact, corporate governance and ethical business practices). The Adviser believes that assessing the potential impact of

ESG issues on a company is critical to the investment process, both in terms of downside risk analysis and assessing future earnings upside potential.

Strategy Portfolio Concentration [Text]