v3.26.3
Investment Risks
Nov. 01, 2026
DF Dent Premier Growth Fund | Capital Gains Risk  
Prospectus [Line Items]  
Risk [Text Block]

Capital Gains Risk. The sale of securities held in the Fund’s portfolio may generate capital gains if the value of a security sold has appreciated since the time of the Fund’s initial investment. There can be no guarantee that the Fund will not distribute such capital gains. Shareholders that are investing through a taxable account should consider the embedded gains or losses of the Fund, which are disclosed in the most recent annual and semi-annual report. A new shareholder could be subject to taxes on a distribution it receives from the Fund that was earned when it was not a shareholder.

DF Dent Premier Growth Fund | Redemption Risk  
Prospectus [Line Items]  
Risk [Text Block]

Redemption Risk. The Fund could experience a loss when selling securities to meet redemption requests by shareholders. The risk of loss increases if the redemption requests are unusually large or frequent or occur in times of overall market turmoil or declining prices. Furthermore, the Fund currently has a large shareholder controlled by the Fund’s Adviser, which could redeem shares to the detriment of other shareholders.

DF Dent Premier Growth Fund | Market Events Risk  
Prospectus [Line Items]  
Risk [Text Block]

Market Events Risk. The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably, based on overall economic and other factors, which may negatively affect performance. Disruptive events with geopolitical consequences, including tensions, war, or open conflict between nations, and pandemics, may destabilize various countries’ economies and markets, which may experience increased volatility and reduced liquidity. Policy changes by the Federal Reserve, including with respect to changes in interest rates and inflation, and political circumstances in the U.S. and abroad, and/or other government actors could similarly cause increased volatility in financial markets. Trade barriers and other protectionist trade policies (including those in the U.S.) may also result in market turbulence. Market volatility and reductions in market liquidity may negatively affect issuers worldwide, including issuers in which the Fund invests. Under such circumstances, the Fund may have difficulty liquidating portfolio holdings, particularly at favorable prices. To the extent that the Fund experiences higher levels of redemptions, the Fund may be required to sell portfolio holdings, which may negatively impact the Fund’s NAV. In addition, advancements in technology, including advanced development and increased regulation of artificial intelligence, may adversely impact market movements and liquidity.

DF Dent Premier Growth Fund | Management Risk  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is actively managed, and its performance will reflect the Adviser’s ability to make investment decisions that are suited to achieving the Fund’s investment objective.

DF Dent Premier Growth Fund | Growth Company Risk  
Prospectus [Line Items]  
Risk [Text Block]

Growth Company Risk. The Fund’s investments in growth securities may be more sensitive to company earnings and more volatile than the market in general primarily because their stock prices are based heavily on future expectations. If the Adviser’s assessment of the prospects for a company’s growth is wrong, or if the Adviser’s judgment of how other investors will value the company’s growth is wrong, then the price of the company’s stock may fall or not approach the value that the Adviser has placed on it.

DF Dent Premier Growth Fund | Equity Risk  
Prospectus [Line Items]  
Risk [Text Block]

Equity Risk. Equity securities, which include common stocks may decline in value because of changes in the price of a particular holding or a broad stock market decline. Common stock ranks below preferred stock and debt securities in claims for dividends and for assets of the company in a liquidation or bankruptcy. The value of a security may decline for a number of reasons that directly relate to the issuer of a security or broader economic or market events including changes in interest rates.

DF Dent Premier Growth Fund | Small and Mid-Sized Capitalization Company Risk  
Prospectus [Line Items]  
Risk [Text Block]

Small and Mid-Sized Capitalization Company Risk. Investments in small and mid-sized capitalization companies may be less liquid, and the prices of such securities may fluctuate more than those of larger, more established companies. These factors could adversely affect the Fund’s ability to sell such securities at a desirable time and price.

DF Dent Premier Growth Fund | Cash and Cash Equivalents Risk  
Prospectus [Line Items]  
Risk [Text Block]

Cash and Cash Equivalents Risk. When investing in cash and cash equivalents, the Fund risks achieving lower returns and potential lost opportunities to participate in market appreciation, which could negatively impact the Fund’s performance and ability to achieve its investment objective. This is particularly true when the market for other investments in which the Fund may invest is rapidly rising.

DF Dent Premier Growth Fund | Large Capitalization Company Risk  
Prospectus [Line Items]  
Risk [Text Block]

Large Capitalization Company Risk. The Fund’s investments in large capitalization companies may underperform other segments of the market because they may be less responsive to competitive challenges and opportunities and unable to attain high growth rates during periods of economic expansion.

DF Dent Premier Growth Fund | Sector Risk  
Prospectus [Line Items]  
Risk [Text Block]

Sector Risk. The Fund may invest a higher percentage of its total assets in one or more sectors. Developments affecting those sectors should be expected to impact the Fund more than a fund that is more broadly diversified and/or is not weighted in those sectors.

 

Financials Sector Risk. Performance of companies in the financials sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. The impact of more stringent capital requirements, recent or future regulation of any individual financial company, or recent or future regulation of the financials sector as a whole cannot be predicted.

 

Healthcare Sector Risk. The profitability of companies in the healthcare sector may be affected by government regulations changing costs of medical products and services, limited product lines, and product liability claims, among other things. Many healthcare companies are heavily dependent on patent protection, which may be time consuming and costly, and the expiration of a company’s patent may adversely affect that company’s profitability. Healthcare companies may be thinly capitalized and susceptible to product obsolescence. Many new products in the healthcare sector require significant research and development and may be subject to regulatory approvals, which may be time consuming and costly and with no guarantee that the product will come to market.

 

Industrials Sector Risk. The industrials sector includes, for example, aerospace and defense, nonresidential construction, engineering, machinery, transportation, and commercial and professional services companies. This sector can be significantly affected by, among other things, business cycle fluctuations, worldwide economy growth, government and corporate spending, supply and demand for specific products and manufacturing, and government regulation.

 

Information Technology Sector Risk. The information technology sector includes, for example, artificial intelligence, internet, semiconductor, software, hardware and technology equipment companies. This sector can be affected by, among other things, the supply and demand for specific products and services, the pace of technological development and government regulation.

DF Dent Premier Growth Fund | REIT Risk  
Prospectus [Line Items]  
Risk [Text Block]

REIT Risk. The value of the Fund’s investments in REITs may change in response to changes in the real estate market such as declines in the value of real estate, lack of available capital or financing opportunities, and increases in property taxes or operating costs. REITs typically are subject to management fees and other expenses that are separate from those of the Fund, and the Fund will bear a proportionate share of those fees and expenses.

DF Dent Premier Growth Fund | Initial Public Offering Risk  
Prospectus [Line Items]  
Risk [Text Block]

Initial Public Offering Risk. The Fund may purchase securities in an IPO. Securities purchased in an IPO may be illiquid, and therefore more difficult to sell promptly at the most favorable price, and may be subject to substantial price volatility due to factors such as unseasoned trading, lack of investor knowledge of the company, and limited operating history.

DF Dent Premier Growth Fund | ADR Risk  
Prospectus [Line Items]  
Risk [Text Block]

ADR Risk. The Fund may invest in ADRs. ADR risks include, but are not limited to, foreign investment risks, such as political and financial instability, less liquidity, lack of uniform accounting, auditing and financial reporting standards and increased price volatility. In addition, ADRs may not track the price of the underlying foreign securities, and their value may change materially at times when U.S. markets are not open for trading. Unsponsored ADRs may involve additional risks, and their prices may be more volatile than the prices of sponsored ADRs.

DF Dent Premier Growth Fund | Preferred Stock Risk  
Prospectus [Line Items]  
Risk [Text Block]

Preferred Stock Risk. Preferred stock is a class of a capital stock that typically pays dividends at a specified rate. Preferred stock is generally senior to common stock, but subordinate to debt securities, with respect to the payment of dividends and on liquidation of the issuer. The market value of preferred stock generally decreases when interest rates rise and is also affected by the issuer’s ability to make payments on the preferred stock.

DF Dent Premier Growth Fund | Convertible Securities Risk  
Prospectus [Line Items]  
Risk [Text Block]

Convertible Securities Risk. Investments in convertible securities entail some of the risks of both equity and debt securities. The value of convertible securities tends to decline as interest rates rise and, because of the conversion feature, tends to vary with the fluctuations in the market value of the underlying securities or any changes in the issuer’s credit rating. Convertible securities are subject to the risk that the credit rating of the issuer may have an effect on the value of the convertible securities.

DF Dent Premier Growth Fund | Exchange-Traded Funds Risk  
Prospectus [Line Items]  
Risk [Text Block]

Exchange-Traded Funds Risk. The risks of investment in these securities typically reflect the risks of types of instruments in which the ETFs invest. By investing in an ETF, the Fund becomes a shareholder of that ETF and bears its proportionate share of the fees and expenses of the ETF. ETF shares trade in the secondary market and may be purchased by the Fund at a premium or discount to their NAV. When selling such securities, the Fund may not sell at the same premium or discount and may lose money on the premium or discount.

DF Dent Premier Growth Fund | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] You could lose money on your investment in the Fund, and the Fund could underperform other investments.
DF Dent Premier Growth Fund | Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items]  
Risk [Text Block] An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
DF Dent Midcap Growth Fund | Capital Gains Risk  
Prospectus [Line Items]  
Risk [Text Block]

Capital Gains Risk. The sale of securities held in the Fund’s portfolio may generate capital gains if the value of a security sold has appreciated since the time of the Fund’s initial investment. There can be no guarantee that the Fund will not distribute such capital gains. Shareholders that are investing through a taxable account should consider the embedded gains or losses of the Fund, which are disclosed in the most recent annual and semi-annual report. A new shareholder could be subject to taxes on a distribution it receives from the Fund that was earned when it was not a shareholder.

DF Dent Midcap Growth Fund | Redemption Risk  
Prospectus [Line Items]  
Risk [Text Block]

Redemption Risk. The Fund could experience a loss when selling securities to meet redemption requests by shareholders. The risk of loss increases if the redemption requests are unusually large or frequent or occur in times of overall market turmoil or declining prices. Furthermore, the Fund currently has a large shareholder controlled by the Fund’s Adviser, which could redeem shares to the detriment of other shareholders.

DF Dent Midcap Growth Fund | Market Events Risk  
Prospectus [Line Items]  
Risk [Text Block]

Market Events Risk. The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably, based on overall economic and other factors, which may negatively affect performance. Disruptive events with geopolitical consequences, including tensions, war, or open conflict between nations, and pandemics, may destabilize various countries’ economies and markets, which may experience increased volatility and reduced liquidity. Policy changes by the Federal Reserve, including with respect to changes in interest rates and inflation, and political circumstances in the U.S. and abroad, and/or other government actors could similarly cause increased volatility in financial markets. Trade barriers and other protectionist trade policies (including those in the U.S.) may also result in market turbulence. Market volatility and reductions in market liquidity may negatively affect issuers worldwide, including issuers in which the Fund invests. Under such circumstances, the Fund may have difficulty liquidating portfolio holdings, particularly at favorable prices. To the extent that the Fund experiences higher levels of redemptions, the Fund may be

required to sell portfolio holdings, which may negatively impact the Fund’s NAV. In addition, advancements in technology, including advanced development and increased regulation of artificial intelligence, may adversely impact market movements and liquidity.

DF Dent Midcap Growth Fund | Management Risk  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is actively managed, and its performance will reflect the Adviser’s ability to make investment decisions that are suited to achieving the Fund’s investment objective.

DF Dent Midcap Growth Fund | Growth Company Risk  
Prospectus [Line Items]  
Risk [Text Block]

Growth Company Risk. The Fund’s investments in growth securities may be more sensitive to company earnings and more volatile than the market in general primarily because their stock prices are based heavily on future expectations. If the Adviser’s assessment of the prospects for a company’s growth is wrong, or if the Adviser’s judgment of how other investors will value the company’s growth is wrong, then the price of the company’s stock may fall or not approach the value that the Adviser has placed on it.

DF Dent Midcap Growth Fund | Equity Risk  
Prospectus [Line Items]  
Risk [Text Block]

Equity Risk. Equity securities, which include common stocks may decline in value because of changes in the price of a particular holding or a broad stock market decline. Common stock ranks below preferred stock and debt securities in claims for dividends and for assets of the company in a liquidation or bankruptcy. The value of a security may decline for a number of reasons that directly relate to the issuer of a security or broader economic or market events including changes in interest rates.

DF Dent Midcap Growth Fund | Small and Mid-Sized Capitalization Company Risk  
Prospectus [Line Items]  
Risk [Text Block]

Small and Mid-Sized Capitalization Company Risk. Investments in small and mid-sized capitalization companies may be less liquid, and the prices of such securities may fluctuate more than those of larger, more established companies. These factors could adversely affect the Fund’s ability to sell such securities at a desirable time and price. The Fund could have a significant percentage of its assets invested in securities that have appreciated or depreciated significantly from their market capitalizations at the time of the Fund’s investment.

DF Dent Midcap Growth Fund | Cash and Cash Equivalents Risk  
Prospectus [Line Items]  
Risk [Text Block]

Cash and Cash Equivalents Risk. When investing in cash and cash equivalents, the Fund risks achieving lower returns and potential lost opportunities to participate in market appreciation, which could negatively impact the Fund’s performance and ability to achieve its investment objective. This is particularly true when the market for other investments in which the Fund may invest is rapidly rising.

DF Dent Midcap Growth Fund | Sector Risk  
Prospectus [Line Items]  
Risk [Text Block]

Sector Risk. The Fund may invest a higher percentage of its total assets in one or more sectors. Developments affecting those sectors should be expected to impact the Fund more than a fund that is more broadly diversified and/or is not weighted in those sectors.

 

Financials Sector Risk. Performance of companies in the financials sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. The impact of more stringent capital requirements, recent or future regulation of any individual financial company, or recent or future regulation of the financials sector as a whole cannot be predicted.

 

Healthcare Sector Risk. The profitability of companies in the healthcare sector may be affected by government regulations changing costs of medical products and services, limited product lines, and product liability claims, among other things. Many healthcare companies are heavily dependent on patent protection, which may be time consuming and costly, and the expiration of a company’s patent may adversely affect that company’s profitability. Healthcare companies may be thinly capitalized and susceptible to product obsolescence. Many new products in the healthcare sector require significant research and development and may be subject to regulatory approvals, which may be time consuming and costly and with no guarantee that the product will come to market.

 

Industrials Sector Risk. The industrials sector includes, for example, aerospace and defense, nonresidential construction, engineering, machinery, transportation, and commercial and professional services companies. This sector can be significantly affected by, among other things, business cycle fluctuations, worldwide economy growth, government and corporate spending, supply and demand for specific products and manufacturing, and government regulation.

 

Information Technology Sector Risk. The information technology sector includes, for example, artificial intelligence, internet, semiconductor, software, hardware and technology equipment companies. This sector can be affected by, among other things, the supply and demand for specific products and services, the pace of technological development and government regulation.

DF Dent Midcap Growth Fund | REIT Risk  
Prospectus [Line Items]  
Risk [Text Block]

REIT Risk. The value of the Fund’s investments in REITs may change in response to changes in the real estate market such as declines in the value of real estate, lack of available capital or financing opportunities, and increases in property taxes or operating costs. REITs typically are subject to management fees and other expenses that are separate from those of the Fund, and the Fund will bear a proportionate share of those fees and expenses.

DF Dent Midcap Growth Fund | Initial Public Offering Risk  
Prospectus [Line Items]  
Risk [Text Block]

Initial Public Offering Risk. The Fund may purchase securities in an IPO. Securities purchased in an IPO may be illiquid, and therefore more difficult to sell promptly at the most favorable price, and may be subject to substantial price volatility due to factors such as unseasoned trading, lack of investor knowledge of the company, and limited operating history.

DF Dent Midcap Growth Fund | ADR Risk  
Prospectus [Line Items]  
Risk [Text Block]

ADR Risk. The Fund may invest in ADRs. ADR risks include, but are not limited to, foreign investment risks, such as political and financial instability, less liquidity, lack of uniform accounting, auditing and financial reporting standards and increased price volatility. In addition, ADRs may not track the price of the underlying foreign securities, and their value may change materially at times when U.S. markets are not open for trading. Unsponsored ADRs may involve additional risks, and their prices may be more volatile than the prices of sponsored ADRs.

DF Dent Midcap Growth Fund | Preferred Stock Risk  
Prospectus [Line Items]  
Risk [Text Block]

Preferred Stock Risk. Preferred stock is a class of a capital stock that typically pays dividends at a specified rate. Preferred stock is generally senior to common stock, but subordinate to debt securities, with respect to the payment of dividends and on liquidation of the issuer. The market value of preferred stock generally decreases when interest rates rise and is also affected by the issuer’s ability to make payments on the preferred stock.

DF Dent Midcap Growth Fund | Convertible Securities Risk  
Prospectus [Line Items]  
Risk [Text Block]

Convertible Securities Risk. Investments in convertible securities entail some of the risks of both equity and debt securities. The value of convertible securities tends to decline as interest rates rise and, because of the conversion feature, tends to vary with the fluctuations in the market value of the underlying securities or any changes in the issuer’s credit rating. Convertible securities are subject to the risk that the credit rating of the issuer may have an effect on the value of the convertible securities.

DF Dent Midcap Growth Fund | Exchange-Traded Funds Risk  
Prospectus [Line Items]  
Risk [Text Block]

Exchange-Traded Funds Risk. The risks of investment in these securities typically reflect the risks of types of instruments in which the ETFs invest. By investing in an ETF, the Fund becomes a shareholder of that ETF and bears its proportionate share of the fees and expenses of the ETF. ETF shares trade in the secondary market and may be purchased by the Fund at a premium or discount to their NAV. When selling such securities, the Fund may not sell at the same premium or discount and may lose money on the premium or discount.

DF Dent Midcap Growth Fund | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] You could lose money on your investment in the Fund, and the Fund could underperform other investments.
DF Dent Midcap Growth Fund | Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items]  
Risk [Text Block] An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
DF Dent Small Cap Growth Fund | Capital Gains Risk  
Prospectus [Line Items]  
Risk [Text Block]

Capital Gains Risk. The sale of securities held in the Fund’s portfolio may generate capital gains if the value of a security sold has appreciated since the time of the Fund’s initial investment. There can be no guarantee that the Fund will not distribute such capital gains. Shareholders that are investing through a taxable account should consider the embedded gains or losses of the Fund, which are disclosed in the most recent annual and semi-annual report. A new shareholder could be subject to taxes on a distribution it receives from the Fund that was earned when it was not a shareholder.

DF Dent Small Cap Growth Fund | Redemption Risk  
Prospectus [Line Items]  
Risk [Text Block]

Redemption Risk. The Fund could experience a loss when selling securities to meet redemption requests by shareholders. The risk of loss increases if the redemption requests are unusually large or frequent or occur in times of overall market turmoil or declining prices. Furthermore, the Fund currently has a large shareholder controlled by the Fund’s Adviser, which could redeem shares to the detriment of other shareholders.

DF Dent Small Cap Growth Fund | Market Events Risk  
Prospectus [Line Items]  
Risk [Text Block]

Market Events Risk. The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably, based on overall economic and other factors, which may negatively affect performance. Disruptive events with geopolitical consequences, including tensions, war, or open conflict between nations, and pandemics, may destabilize various countries’ economies and markets, which may experience increased volatility and reduced liquidity. Policy changes by the Federal Reserve, including with respect to changes in interest rates and inflation, and political circumstances in the U.S. and abroad, and/or other government actors could similarly cause increased volatility in financial markets. Trade barriers and other protectionist trade policies (including those in the U.S.) may also result in market turbulence. Market volatility and reductions in market liquidity may negatively affect issuers worldwide, including issuers in which the Fund invests. Under such circumstances, the Fund may have difficulty liquidating portfolio holdings, particularly at favorable prices. To the extent that the Fund experiences higher levels of redemptions, the Fund may be required to sell portfolio holdings, which may negatively impact the Fund’s NAV. In addition, advancements in technology, including advanced development and increased regulation of artificial intelligence, may adversely impact market movements and liquidity.

DF Dent Small Cap Growth Fund | Management Risk  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is actively managed, and its performance will reflect the Adviser’s ability to make investment decisions that are suited to achieving the Fund’s investment objective.

DF Dent Small Cap Growth Fund | Growth Company Risk  
Prospectus [Line Items]  
Risk [Text Block]

Growth Company Risk. The Fund’s investments in growth securities may be more sensitive to company earnings and more volatile than the market in general primarily because their stock prices are based heavily on future expectations. If the Adviser’s assessment of the prospects for a company’s growth is wrong, or if the Adviser’s judgment of how other investors will value the company’s growth is wrong, then the price of the company’s stock may fall or not approach the value that the Adviser has placed on it.

DF Dent Small Cap Growth Fund | Equity Risk  
Prospectus [Line Items]  
Risk [Text Block]

Equity Risk. Equity securities, which include common stocks may decline in value because of changes in the price of a particular holding or a broad stock market decline. Common stock ranks below preferred stock and debt securities in claims for dividends and for assets of the company in a liquidation or bankruptcy. The value of a security may decline for a number of reasons that directly relate to the issuer of a security or broader economic or market events including changes in interest rates.

DF Dent Small Cap Growth Fund | Cash and Cash Equivalents Risk  
Prospectus [Line Items]  
Risk [Text Block]

Cash and Cash Equivalents Risk. When investing in cash and cash equivalents, the Fund risks achieving lower returns and potential lost opportunities to participate in market appreciation, which could negatively impact the Fund’s performance and ability to achieve its investment objective. This is particularly true when the market for other investments in which the Fund may invest is rapidly rising.

DF Dent Small Cap Growth Fund | Sector Risk  
Prospectus [Line Items]  
Risk [Text Block]

Sector Risk. The Fund may invest a higher percentage of its total assets in one or more sectors. Developments affecting those sectors should be expected to impact the Fund more than a fund that is more broadly diversified and/or is not weighted in those sectors.

 

Healthcare Sector Risk. The profitability of companies in the healthcare sector may be affected by government regulations changing costs of medical products and services, limited product lines, and product liability claims, among other things. Many healthcare companies are heavily dependent on patent protection, which may be time consuming and costly, and the expiration of a company’s patent may adversely affect that company’s profitability. Healthcare companies may be thinly capitalized and susceptible to product obsolescence. Many new products in the healthcare sector require significant research and development and may be subject to regulatory approvals, which may be time consuming and costly and with no guarantee that the product will come to market.

 

Industrials Sector Risk. The industrials sector includes, for example, aerospace and defense, nonresidential construction, engineering, machinery, transportation, and commercial and professional services companies. This sector can be significantly affected by, among other things, business cycle fluctuations, worldwide economy growth, government and corporate spending, supply and demand for specific products and manufacturing, and government regulation.

 

Information Technology Sector Risk. The information technology sector includes, for example, artificial intelligence, internet, semiconductor, software, hardware and technology equipment companies. This sector can be affected by, among other things, the supply and demand for specific products and services, the pace of technological development and government regulation.

DF Dent Small Cap Growth Fund | REIT Risk  
Prospectus [Line Items]  
Risk [Text Block]

REIT Risk. The value of the Fund’s investments in REITs may change in response to changes in the real estate market such as declines in the value of real estate, lack of available capital or financing opportunities, and increases in property taxes or operating costs. REITs typically are subject to management fees and other expenses that are separate from those of the Fund, and the Fund will bear a proportionate share of those fees and expenses.

DF Dent Small Cap Growth Fund | Initial Public Offering Risk  
Prospectus [Line Items]  
Risk [Text Block]

Initial Public Offering Risk. The Fund may purchase securities in an IPO. Securities purchased in an IPO may be illiquid, and therefore more difficult to sell promptly at the most favorable price, and may be subject to substantial price volatility due to factors such as unseasoned trading, lack of investor knowledge of the company, and limited operating history.

DF Dent Small Cap Growth Fund | ADR Risk  
Prospectus [Line Items]  
Risk [Text Block]

ADR Risk. The Fund may invest in ADRs. ADR risks include, but are not limited to, foreign investment risks, such as political and financial instability, less liquidity, lack of uniform accounting, auditing and financial reporting standards and increased price volatility. In addition, ADRs may not track the price of the underlying foreign securities, and their value may change materially at times when U.S. markets are not open for trading. Unsponsored ADRs may involve additional risks, and their prices may be more volatile than the prices of sponsored ADRs.

DF Dent Small Cap Growth Fund | Preferred Stock Risk  
Prospectus [Line Items]  
Risk [Text Block]

Preferred Stock Risk. Preferred stock is a class of a capital stock that typically pays dividends at a specified rate. Preferred stock is generally senior to common stock, but subordinate to debt securities, with respect to the payment of dividends and on liquidation of the issuer. The market value of preferred stock generally decreases when interest rates rise and is also affected by the issuer’s ability to make payments on the preferred stock.

DF Dent Small Cap Growth Fund | Convertible Securities Risk  
Prospectus [Line Items]  
Risk [Text Block]

Convertible Securities Risk. Investments in convertible securities entail some of the risks of both equity and debt securities. The value of convertible securities tends to decline as interest rates rise and, because of the conversion feature, tends to vary with the fluctuations in the market value of the underlying securities or any changes in the issuer’s credit rating. Convertible securities are subject to the risk that the credit rating of the issuer may have an effect on the value of the convertible securities.

DF Dent Small Cap Growth Fund | Exchange-Traded Funds Risk  
Prospectus [Line Items]  
Risk [Text Block]

Exchange-Traded Funds Risk. The risks of investment in these securities typically reflect the risks of types of instruments in which the ETFs invest. By investing in an ETF, the Fund becomes a shareholder of that ETF and bears its proportionate share of the fees and expenses of the ETF. ETF shares trade in the secondary market and may be purchased by the Fund at a premium or discount to their NAV. When selling such securities, the Fund may not sell at the same premium or discount and may lose money on the premium or discount.

DF Dent Small Cap Growth Fund | Small Capitalization Company Risk  
Prospectus [Line Items]  
Risk [Text Block]

Small Capitalization Company Risk. The Fund’s investments in small capitalization companies may be less liquid and their securities’ prices may fluctuate more than those of larger, more established companies. These factors could adversely affect the Fund’s ability to sell such securities at a desirable time and price.

DF Dent Small Cap Growth Fund | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] You could lose money on your investment in the Fund, and the Fund could underperform other investments.
DF Dent Small Cap Growth Fund | Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items]  
Risk [Text Block] An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.