Investment Risks |
Jul. 29, 2026 |
|---|---|
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Risk Not Insured [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Funds is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, SIMC or any of its affiliates. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk. Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Quality Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quality Securities Risk. There is no guarantee that the past performance of stocks that SIMC determines are quality will continue. Companies that issue these stocks may experience lower than expected returns or may experience negative growth, as well as increased leverage, resulting in lower than expected or negative returns to Fund shareholders. Many factors can affect a stock's quality and performance, and the impact of these factors on a stock or its price can be difficult to predict. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Quantitative Investing Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quantitative Investing Risk. Due to the significant role technology plays in quantitative strategies, they carry the risk of unintended or unrecognized issues or flaws in the design, coding, implementation or maintenance of the computer programs or technology used in the development and implementation of the quantitative strategy. Utility interruptions or other key systems outages also can impair the performance of quantitative investment strategies. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Large-Capitalization Companies Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Large-Capitalization Companies Risk. Large-capitalization companies may be less able than smaller capitalization companies to adapt to changing market conditions, may be more mature and may be subject to more limited growth potential compared with smaller capitalization companies. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Risk. The market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the equity or bond market as a whole. The Fund's market price may deviate from the value of the Fund's underlying portfolio holdings, particularly in times of market stress, with the result that investors may pay significantly more or receive significantly less than the underlying value of the Fund shares bought or sold. This can be reflected as a spread between the bid and ask prices for the Fund quoted during the day or a premium or discount in the closing price from the Fund's NAV. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Risk of Investing in the U.S. [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Risk of Investing in the U.S. Certain changes in the U.S. economy, such as when the U.S. economy weakens or when its financial markets decline, may have an adverse effect on the securities to which the Fund has exposure. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Issuer Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Issuer Risk. The performance of the Fund depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the Fund to decline. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Market Trading Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Trading Risk. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Active trading markets for the Fund's shares may not be developed or maintained by market makers or Authorized Participants (as defined below). Authorized Participants are not obligated to make a market in the Fund's shares or to submit purchase or redemption orders for Creation Units (as defined below). In times of market stress, market makers or Authorized Participants may step away from their respective roles, which could lead to variances between the market price of the Fund's shares and its underlying NAV. Trading in shares on an exchange may be halted in certain circumstances. If a trading halt occurs, a shareholder may temporarily be unable to purchase or sell shares of the Fund. Any of these factors could lead the Fund's shares to trade at a premium or discount to NAV. Thus, you may pay more (or less) than NAV when you buy shares of the Fund in the secondary market, and you may receive less (or more) than NAV when you sell those shares in the secondary market, particularly during times of market stress. SIMC cannot predict whether shares will trade above (premium), below (discount) or at NAV or whether the spread between bid and ask prices will widen. In addition, there can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Fund will continue to be met. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Convertible and Preferred Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Convertible and Preferred Securities Risk. Convertible and preferred securities have many of the same characteristics as stocks, including many of the same risks. In addition, convertible bonds may be more sensitive to changes in interest rates than stocks. Convertible bonds may also have credit ratings below investment grade, meaning that they carry a higher risk of failure by the issuer to pay principal and/or interest when due. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Depositary Receipts Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Depositary Receipts Risk. Depositary receipts, such as American Depositary Receipts, are certificates evidencing ownership of shares of a foreign issuer that are issued by depositary banks and generally trade on an established market. Depositary receipts are subject to many of the risks associated with investing directly in foreign securities, including, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environment. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Warrants and Rights Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Warrants and Rights Risk. Warrants and rights may lack a liquid secondary market for resale. The prices of warrants and rights may fluctuate as a result of speculation or other factors. Warrants and rights can provide a greater potential for profit or loss than an equivalent investment in the underlying security. Prices of warrants and rights do not necessarily move in tandem with the prices of their underlying securities and are highly volatile and speculative investments. If a warrant or right expires without being exercised, the Fund will lose any amount paid for the warrant or right. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Liquidity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Liquidity Risk. In stressed market conditions, the market for a Fund's shares may become less liquid in response to deteriorating liquidity in the markets for the Fund's underlying portfolio holdings. This adverse effect on liquidity for the Fund's shares in turn could lead to differences between the market price of the Fund's shares and its underlying NAV and/or widening the spread between bid and ask prices. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk. SIMC may not successfully implement the Fund's investment strategies and, as a result, the Fund may not meet its investment objective and/or underperform other investment vehicles with similar investment objectives and strategies. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Operational Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] |
Operational Risk. The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third parties, failed or inadequate processes and technology or systems failures. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Authorized Participant Concentration Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Authorized Participant Concentration Risk. Only broker-dealers (referred to as Authorized Participants or APs) that have executed authorized participation agreements with respect to the Trust may engage in creation or redemption transactions directly with the Fund, and no AP is obligated to engage in creation and/or redemption transactions. To the extent that APs exit the business or are unable to proceed with orders, Fund shares may be more likely to trade at a premium or discount to NAV, have wider spreads between bid and ask prices, have wider spreads between bid and ask prices or face trading halts or delisting. |
| SEI QiM U.S. Large Cap Quality Active ETF | SEI QiM U.S. Large Cap Quality Active ETF | Cybersecurity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cybersecurity Risk. Failures or breaches of the electronic systems of the Fund, SIMC, the Fund's distributor, and other service providers, market makers, APs or the issuers of securities in which the Fund invests have the ability to cause disruptions, negatively impact the Fund's business operations and/or potentially result in financial losses to the Fund and its shareholders. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Risk Not Insured [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Funds is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, SIMC or any of its affiliates. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk. Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Momentum Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Momentum Securities Risk. Stocks that previously exhibited high momentum characteristics may not experience positive momentum or may experience more volatility than the market as a whole. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Quantitative Investing Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quantitative Investing Risk. Due to the significant role technology plays in quantitative strategies, they carry the risk of unintended or unrecognized issues or flaws in the design, coding, implementation or maintenance of the computer programs or technology used in the development and implementation of the quantitative strategy. Utility interruptions or other key systems outages also can impair the performance of quantitative investment strategies. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Large-Capitalization Companies Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Large-Capitalization Companies Risk. Large-capitalization companies may be less able than smaller capitalization companies to adapt to changing market conditions, may be more mature and may be subject to more limited growth potential compared with smaller capitalization companies. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Risk. The market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the equity or bond market as a whole. The Fund's market price may deviate from the value of the Fund's underlying portfolio holdings, particularly in times of market stress, with the result that investors may pay significantly more or receive significantly less than the underlying value of the Fund shares bought or sold. This can be reflected as a spread between the bid and ask prices for the Fund quoted during the day or a premium or discount in the closing price from the Fund's NAV. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Risk of Investing in the U.S. [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Risk of Investing in the U.S. Certain changes in the U.S. economy, such as when the U.S. economy weakens or when its financial markets decline, may have an adverse effect on the securities to which the Fund has exposure. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Issuer Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Issuer Risk. The performance of the Fund depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the Fund to decline. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Market Trading Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Trading Risk. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Active trading markets for the Fund's shares may not be developed or maintained by market makers or Authorized Participants (as defined below). Authorized Participants are not obligated to make a market in the Fund's shares or to submit purchase or redemption orders for Creation Units (as defined below). In times of market stress, market makers or Authorized Participants may step away from their respective roles, which could lead to variances between the market price of the Fund's shares and its underlying NAV. Trading in shares on an exchange may be halted in certain circumstances. If a trading halt occurs, a shareholder may temporarily be unable to purchase or sell shares of the Fund. Any of these factors could lead the Fund's shares to trade at a premium or discount to NAV. Thus, you may pay more (or less) than NAV when you buy shares of the Fund in the secondary market, and you may receive less (or more) than NAV when you sell those shares in the secondary market, particularly during times of market stress. SIMC cannot predict whether shares will trade above (premium), below (discount) or at NAV or whether the spread between bid and ask prices will widen. In addition, there can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Fund will continue to be met. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Convertible and Preferred Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Convertible and Preferred Securities Risk. Convertible and preferred securities have many of the same characteristics as stocks, including many of the same risks. In addition, convertible bonds may be more sensitive to changes in interest rates than stocks. Convertible bonds may also have credit ratings below investment grade, meaning that they carry a higher risk of failure by the issuer to pay principal and/or interest when due. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Depositary Receipts Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Depositary Receipts Risk. Depositary receipts, such as American Depositary Receipts, are certificates evidencing ownership of shares of a foreign issuer that are issued by depositary banks and generally trade on an established market. Depositary receipts are subject to many of the risks associated with investing directly in foreign securities, including, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environment. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Warrants and Rights Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Warrants and Rights Risk. Warrants and rights may lack a liquid secondary market for resale. The prices of warrants and rights may fluctuate as a result of speculation or other factors. Warrants and rights can provide a greater potential for profit or loss than an equivalent investment in the underlying security. Prices of warrants and rights do not necessarily move in tandem with the prices of their underlying securities and are highly volatile and speculative investments. If a warrant or right expires without being exercised, the Fund will lose any amount paid for the warrant or right. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Liquidity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Liquidity Risk. In stressed market conditions, the market for a Fund's shares may become less liquid in response to deteriorating liquidity in the markets for the Fund's underlying portfolio holdings. This adverse effect on liquidity for the Fund's shares in turn could lead to differences between the market price of the Fund's shares and its underlying NAV and/or widening the spread between bid and ask prices. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk. SIMC may not successfully implement the Fund's investment strategies and, as a result, the Fund may not meet its investment objective and/or underperform other investment vehicles with similar investment objectives and strategies. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Operational Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] |
Operational Risk. The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third parties, failed or inadequate processes and technology or systems failures. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Authorized Participant Concentration Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Authorized Participant Concentration Risk. Only broker-dealers (referred to as Authorized Participants or APs) that have executed authorized participation agreements with respect to the Trust may engage in creation or redemption transactions directly with the Fund, and no AP is obligated to engage in creation and/or redemption transactions. To the extent that APs exit the business or are unable to proceed with orders, Fund shares may be more likely to trade at a premium or discount to NAV, have wider spreads between bid and ask prices or face trading halts or delisting. |
| SEI QiM U.S. Large Cap Momentum Active ETF | SEI QiM U.S. Large Cap Momentum Active ETF | Cybersecurity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cybersecurity Risk. Failures or breaches of the electronic systems of the Fund, SIMC, the Fund's distributor, and other service providers, market makers, APs or the issuers of securities in which the Fund invests have the ability to cause disruptions, negatively impact the Fund's business operations and/or potentially result in financial losses to the Fund and its shareholders. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Risk Not Insured [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Funds is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, SIMC or any of its affiliates. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk. Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Value Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Value Securities Risk. Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. SIMC may be unsuccessful in identifying undervalued securities. Value securities have generally performed better than non-value securities during periods of economic recovery (although there is no assurance that they will continue to do so). Value securities may go in and out of favor over time. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Quantitative Investing Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quantitative Investing Risk. Due to the significant role technology plays in quantitative strategies, they carry the risk of unintended or unrecognized issues or flaws in the design, coding, implementation or maintenance of the computer programs or technology used in the development and implementation of the quantitative strategy. Utility interruptions or other key systems outages also can impair the performance of quantitative investment strategies. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Large-Capitalization Companies Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Large-Capitalization Companies Risk. Large-capitalization companies may be less able than smaller capitalization companies to adapt to changing market conditions, may be more mature and may be subject to more limited growth potential compared with smaller capitalization companies. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Risk. The market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the equity or bond market as a whole. The Fund's market price may deviate from the value of the Fund's underlying portfolio holdings, particularly in times of market stress, with the result that investors may pay significantly more or receive significantly less than the underlying value of the Fund shares bought or sold. This can be reflected as a spread between the bid and ask prices for the Fund quoted during the day or a premium or discount in the closing price from the Fund's NAV. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Risk of Investing in the U.S. [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Risk of Investing in the U.S. Certain changes in the U.S. economy, such as when the U.S. economy weakens or when its financial markets decline, may have an adverse effect on the securities to which the Fund has exposure. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Issuer Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Issuer Risk. The performance of the Fund depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the Fund to decline. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Market Trading Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Trading Risk. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Active trading markets for the Fund's shares may not be developed or maintained by market makers or Authorized Participants (as defined below). Authorized Participants are not obligated to make a market in the Fund's shares or to submit purchase or redemption orders for Creation Units (as defined below). In times of market stress, market makers or Authorized Participants may step away from their respective roles, which could lead to variances between the market price of the Fund's shares and its underlying NAV. Trading in shares on an exchange may be halted in certain circumstances. If a trading halt occurs, a shareholder may temporarily be unable to purchase or sell shares of the Fund. Any of these factors could lead the Fund's shares to trade at a premium or discount to NAV. Thus, you may pay more (or less) than NAV when you buy shares of the Fund in the secondary market, and you may receive less (or more) than NAV when you sell those shares in the secondary market, particularly during times of market stress. SIMC cannot predict whether shares will trade above (premium), below (discount) or at NAV or whether the spread between bid and ask prices will widen. In addition, there can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Fund will continue to be met. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Convertible and Preferred Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Convertible and Preferred Securities Risk. Convertible and preferred securities have many of the same characteristics as stocks, including many of the same risks. In addition, convertible bonds may be more sensitive to changes in interest rates than stocks. Convertible bonds may also have credit ratings below investment grade, meaning that they carry a higher risk of failure by the issuer to pay principal and/or interest when due. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Depositary Receipts Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Depositary Receipts Risk. Depositary receipts, such as American Depositary Receipts, are certificates evidencing ownership of shares of a foreign issuer that are issued by depositary banks and generally trade on an established market. Depositary receipts are subject to many of the risks associated with investing directly in foreign securities, including, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environment. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Warrants and Rights Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Warrants and Rights Risk. Warrants and rights may lack a liquid secondary market for resale. The prices of warrants and rights may fluctuate as a result of speculation or other factors. Warrants and rights can provide a greater potential for profit or loss than an equivalent investment in the underlying security. Prices of warrants and rights do not necessarily move in tandem with the prices of their underlying securities and are highly volatile and speculative investments. If a warrant or right expires without being exercised, the Fund will lose any amount paid for the warrant or right. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Liquidity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Liquidity Risk. In stressed market conditions, the market for a Fund's shares may become less liquid in response to deteriorating liquidity in the markets for the Fund's underlying portfolio holdings. This adverse effect on liquidity for the Fund's shares in turn could lead to differences between the market price of the Fund's shares and its underlying NAV and/or widening the spread between bid and ask prices. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk. SIMC may not successfully implement the Fund's investment strategies and, as a result, the Fund may not meet its investment objective and/or underperform other investment vehicles with similar investment objectives and strategies. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Operational Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] |
Operational Risk. The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third parties, failed or inadequate processes and technology or systems failures. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Authorized Participant Concentration Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Authorized Participant Concentration Risk. Only broker-dealers (referred to as Authorized Participants or APs) that have executed authorized participation agreements with respect to the Trust may engage in creation or redemption transactions directly with the Fund, and no AP is obligated to engage in creation and/or redemption transactions. To the extent that APs exit the business or are unable to proceed with orders, Fund shares may be more likely to trade at a premium or discount to NAV, have wider spreads between bid and ask prices or face trading halts or delisting. |
| SEI QiM U.S. Large Cap Value Active ETF | SEI QiM U.S. Large Cap Value Active ETF | Cybersecurity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cybersecurity Risk. Failures or breaches of the electronic systems of the Fund, SIMC, the Fund's distributor, and other service providers, market makers, APs or the issuers of securities in which the Fund invests have the ability to cause disruptions, negatively impact the Fund's business operations and/or potentially result in financial losses to the Fund and its shareholders. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Risk Not Insured [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Funds is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, SIMC or any of its affiliates. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk. Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Volatility Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Volatility Risk. Although SIMC seeks to construct a portfolio with lower volatility than the broad U.S. large cap equity market, there is no guarantee that SIMC will be successful. As a result, the Fund may not be any less volatile than the market as a whole, and could be more volatile. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Quantitative Investing Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quantitative Investing Risk. Due to the significant role technology plays in quantitative strategies, they carry the risk of unintended or unrecognized issues or flaws in the design, coding, implementation or maintenance of the computer programs or technology used in the development and implementation of the quantitative strategy. Utility interruptions or other key systems outages also can impair the performance of quantitative investment strategies. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Large-Capitalization Companies Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Large-Capitalization Companies Risk. Large-capitalization companies may be less able than smaller capitalization companies to adapt to changing market conditions, may be more mature and may be subject to more limited growth potential compared with smaller capitalization companies. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Risk. The market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the equity or bond market as a whole. The Fund's market price may deviate from the value of the Fund's underlying portfolio holdings, particularly in times of market stress, with the result that investors may pay significantly more or receive significantly less than the underlying value of the Fund shares bought or sold. This can be reflected as a spread between the bid and ask prices for the Fund quoted during the day or a premium or discount in the closing price from the Fund's NAV. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Risk of Investing in the U.S. [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Risk of Investing in the U.S. Certain changes in the U.S. economy, such as when the U.S. economy weakens or when its financial markets decline, may have an adverse effect on the securities to which the Fund has exposure. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Issuer Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Issuer Risk. The performance of the Fund depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the Fund to decline. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Market Trading Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Trading Risk. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Active trading markets for the Fund's shares may not be developed or maintained by market makers or Authorized Participants (as defined below). Authorized Participants are not obligated to make a market in the Fund's shares or to submit purchase or redemption orders for Creation Units (as defined below). In times of market stress, market makers or Authorized Participants may step away from their respective roles, which could lead to variances between the market price of the Fund's shares and its underlying NAV. Trading in shares on an exchange may be halted in certain circumstances. If a trading halt occurs, a shareholder may temporarily be unable to purchase or sell shares of the Fund. Any of these factors could lead the Fund's shares to trade at a premium or discount to NAV. Thus, you may pay more (or less) than NAV when you buy shares of the Fund in the secondary market, and you may receive less (or more) than NAV when you sell those shares in the secondary market, particularly during times of market stress. SIMC cannot predict whether shares will trade above (premium), below (discount) or at NAV or whether the spread between bid and ask prices will widen. In addition, there can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Fund will continue to be met. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Convertible and Preferred Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Convertible and Preferred Securities Risk. Convertible and preferred securities have many of the same characteristics as stocks, including many of the same risks. In addition, convertible bonds may be more sensitive to changes in interest rates than stocks. Convertible bonds may also have credit ratings below investment grade, meaning that they carry a higher risk of failure by the issuer to pay principal and/or interest when due. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Depositary Receipts Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Depositary Receipts Risk. Depositary receipts, such as American Depositary Receipts, are certificates evidencing ownership of shares of a foreign issuer that are issued by depositary banks and generally trade on an established market. Depositary receipts are subject to many of the risks associated with investing directly in foreign securities, including, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environment. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Warrants and Rights Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Warrants and Rights Risk. Warrants and rights may lack a liquid secondary market for resale. The prices of warrants and rights may fluctuate as a result of speculation or other factors. Warrants and rights can provide a greater potential for profit or loss than an equivalent investment in the underlying security. Prices of warrants and rights do not necessarily move in tandem with the prices of their underlying securities and are highly volatile and speculative investments. If a warrant or right expires without being exercised, the Fund will lose any amount paid for the warrant or right. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Liquidity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Liquidity Risk. In stressed market conditions, the market for a Fund's shares may become less liquid in response to deteriorating liquidity in the markets for the Fund's underlying portfolio holdings. This adverse effect on liquidity for the Fund's shares in turn could lead to differences between the market price of the Fund's shares and its underlying NAV and/or widening the spread between bid and ask prices. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk. SIMC may not successfully implement the Fund's investment strategies and, as a result, the Fund may not meet its investment objective and/or underperform other investment vehicles with similar investment objectives and strategies. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Operational Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Operational Risk. The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Authorized Participant Concentration Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Authorized Participant Concentration Risk. Only broker-dealers (referred to as Authorized Participants or APs) that have executed authorized participation agreements with respect to the Trust may engage in creation or redemption transactions directly with the Fund, and no AP is obligated to engage in creation and/or redemption transactions. To the extent that APs exit the business or are unable to proceed with orders, Fund shares may be more likely to trade at a premium or discount to NAV, have wider spreads between bid and ask prices or face trading halts or delisting. |
| SEI QiM U.S. Large Cap Low Volatility Active ETF | SEI QiM U.S. Large Cap Low Volatility Active ETF | Cybersecurity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cybersecurity Risk. Failures or breaches of the electronic systems of the Fund, SIMC, the Fund's distributor, and other service providers, market makers, APs or the issuers of securities in which the Fund invests have the ability to cause disruptions, negatively impact the Fund's business operations and/or potentially result in financial losses to the Fund and its shareholders. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Risk Not Insured [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Fund is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, SIMC or any of its affiliates. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk. Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Volatility Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Volatility Risk. Although SIMC seeks to construct a portfolio with lower volatility than the broad U.S. large cap equity market, there is no guarantee that SIMC will be successful. As a result, the Fund may not be any less volatile than the market as a whole, and could be more volatile. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Value Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Value Securities Risk. Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. SIMC may be unsuccessful in identifying undervalued securities. Value securities have generally performed better than non-value securities during periods of economic recovery (although there is no assurance that they will continue to do so). Value securities may go in and out of favor over time. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Momentum Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Momentum Securities Risk. Stocks that previously exhibited high momentum characteristics may not experience positive momentum or may experience more volatility than the market as a whole. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Quality Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quality Securities Risk. There is no guarantee that the past performance of stocks that SIMC determines are quality will continue. Companies that issue these stocks may experience lower than expected returns or may experience negative growth, as well as increased leverage, resulting in lower than expected or negative returns to Fund shareholders. Many factors can affect a stock's quality and performance, and the impact of these factors on a stock or its price can be difficult to predict. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Quantitative Investing Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quantitative Investing Risk. Due to the significant role technology plays in quantitative strategies, they carry the risk of unintended or unrecognized issues or flaws in the design, coding, implementation or maintenance of the computer programs or technology used in the development and implementation of the quantitative strategy. Utility interruptions or other key systems outages also can impair the performance of quantitative investment strategies. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Risk. The market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the equity or bond market as a whole. The Fund's market price may deviate from the value of the Fund's underlying portfolio holdings, particularly in times of market stress, with the result that investors may pay significantly more or receive significantly less than the underlying value of the Fund shares bought or sold. This can be reflected as a spread between the bid and ask prices for the Fund quoted during the day or a premium or discount in the closing price from the Fund's NAV. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Large Capitalization Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Large Capitalization Risk. The risk that larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and consumer tastes. Larger companies also may not be able to attain the high growth rates of successful smaller companies. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Small and Medium Capitalization Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Small and Medium Capitalization Risk. The risk that small and medium capitalization companies in which the Fund may invest may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small and medium capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small capitalization and medium capitalization stocks may be more volatile than those of larger companies. Small capitalization and medium capitalization stocks may be traded over-the-counter (OTC). OTC stocks may trade less frequently and in smaller volume than exchange listed stocks and may have more price volatility than that of exchange-listed stocks. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Investment Style [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Investment Style Risk. The risk that the Fund's investment strategy may underperform other segments of the equity markets or the equity markets as a whole. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Risk of Investing in the U.S. [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Risk of Investing in the U.S. Certain changes in the U.S. economy, such as when the U.S. economy weakens or when its financial markets decline, may have an adverse effect on the securities to which the Fund has exposure. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Issuer Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Issuer Risk. The performance of the Fund depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the Fund to decline. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Market Trading Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Trading Risk. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Active trading markets for the Fund's shares may not be developed or maintained by market makers or Authorized Participants (as defined below). Authorized Participants are not obligated to make a market in the Fund's shares or to submit purchase or redemption orders for Creation Units (as defined below). In times of market stress, market makers or Authorized Participants may step away from their respective roles, which could lead to variances between the market price of the Fund's shares and its underlying NAV. Trading in shares on an exchange may be halted in certain circumstances. If a trading halt occurs, a shareholder may temporarily be unable to purchase or sell shares of the Fund. Any of these factors could lead the Fund's shares to trade at a premium or discount to NAV. Thus, you may pay more (or less) than NAV when you buy shares of the Fund in the secondary market, and you may receive less (or more) than NAV when you sell those shares in the secondary market, particularly during times of market stress. SIMC cannot predict whether shares will trade above (premium), below (discount) or at NAV or whether the spread between bid and ask prices will widen. In addition, there can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Fund will continue to be met. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Convertible and Preferred Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Convertible and Preferred Securities Risk. Convertible and preferred securities have many of the same characteristics as stocks, including many of the same risks. In addition, convertible securities may be more sensitive to changes in interest rates than stocks. Convertible securities may also have credit ratings below investment grade, meaning that they carry a higher risk of failure by the issuer to pay principal and/or interest when due. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Real Estate Investment Trusts (REITs) Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Real Estate Investment Trusts (REITs) Risk. REITs are trusts that invest primarily in commercial real estate or real estate-related loans. The Fund's investments in REITs will be subject to the risks associated with the direct ownership of real estate. Risks commonly associated with the direct ownership of real estate include fluctuations in the value of underlying properties, defaults by borrowers or tenants, changes in interest rates and risks related to general or local economic conditions. Some REITs may have limited diversification and may be subject to risks inherent in financing a limited number of properties. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Structured Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Structured Securities Risk. The payment and credit qualities of structured securities derive from their underlying assets, and they may behave in ways not anticipated by the Fund, or they may not receive tax, accounting or regulatory treatment anticipated by the Fund. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Depositary Receipts Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Depositary Receipts Risk. Depositary receipts, such as ADRs, are certificates evidencing ownership of shares of a foreign issuer that are issued by depositary banks and generally trade on an established market. Depositary receipts are subject to many of the risks associated with investing directly in foreign securities, including, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environments. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Liquidity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Liquidity Risk. In stressed market conditions, the market for the Fund's shares may become less liquid in response to deteriorating liquidity in the markets for the Fund's underlying portfolio holdings. This adverse effect on liquidity for the Fund's shares in turn could lead to differences between the market price of the Fund's shares and its underlying NAV and/or widening the spread between bid and ask prices. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk. SIMC may not successfully implement the Fund's investment strategies and, as a result, the Fund may not meet its investment objective and/or underperform other investment vehicles with similar investment objectives and strategies. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Operational Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] |
Operational Risk. The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third parties, failed or inadequate processes and technology or systems failures. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | New Fund Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | New Fund Risk. The Fund is a new fund, with a limited operating history, which may result in additional risks for investors in the Fund. There can be no assurance that the Fund will grow to an economically viable size, in which case the Fund may cease operations. In such an event, investors may be required to liquidate or transfer their investments at an inopportune time. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Authorized Participant Concentration Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Authorized Participant Concentration Risk. Only broker-dealers (referred to as Authorized Participants or APs) that have executed authorized participation agreements with respect to the Trust may engage in creation or redemption transactions directly with the Fund, and no AP is obligated to engage in creation and/or redemption transactions. To the extent that APs exit the business or are unable to proceed with orders, Fund shares may be more likely to trade at a premium or discount to NAV, have wider spreads between bid and ask prices, have wider spreads between bid and ask prices or face trading halts or delisting. |
| SEI QiM U.S. Equity Factor Allocation Active ETF | SEI QIM U.S. Equity Factor Allocation Active ETF | Cybersecurity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cybersecurity Risk. Failures or breaches of the electronic systems of the Fund, SIMC, the Fund's distributor, and other service providers, market makers, APs or the issuers of securities in which the Fund invests have the ability to cause disruptions, negatively impact the Fund's business operations and/or potentially result in financial losses to the Fund and its shareholders. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Risk Not Insured [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Fund is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, SIMC or any of its affiliates. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk. Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Value Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Value Securities Risk. Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. SIMC or a Sub-Adviser may be unsuccessful in identifying undervalued securities. Value securities have generally performed better than non-value securities during periods of economic recovery (although there is no assurance that they will continue to do so). Value securities may go in and out of favor over time. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Low Volatility Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Low Volatility Risk. Although subject to the risks of common stocks, low volatility stocks are seen as having a lower risk profile than the overall markets. However, a portfolio comprised of low volatility stocks may not produce investment exposure that has lower variability to changes in such stocks' price levels. Low volatility stocks are likely to underperform the broader market during periods of rapidly rising stock prices when market volatility is high. Low volatility stocks also may not protect against market declines. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Momentum Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Momentum Securities Risk. Stocks that previously exhibited high momentum characteristics may not experience positive momentum or may experience more volatility than the market as a whole. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Quality Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quality Securities Risk. There is no guarantee that the past performance of stocks that SIMC or a Sub-Adviser determines are quality will continue. Companies that issue these stocks may experience lower than expected returns or may experience negative growth, as well as increased leverage, resulting in lower than expected or negative returns to Fund shareholders. Many factors can affect a stock's quality and performance, and the impact of these factors on a stock or its price can be difficult to predict. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Quantitative Investing Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quantitative Investing Risk. Due to the significant role technology plays in quantitative strategies, they carry the risk of unintended or unrecognized issues or flaws in the design, coding, implementation or maintenance of the computer programs or technology used in the development and implementation of the quantitative strategy. Utility interruptions or other key systems outages also can impair the performance of quantitative investment strategies. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Risk. The market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the equity or bond market as a whole. The Fund's market price may deviate from the value of the Fund's underlying portfolio holdings, particularly in times of market stress, with the result that investors may pay significantly more or receive significantly less than the underlying value of the Fund shares bought or sold. This can be reflected as a spread between the bid and ask prices for the Fund quoted during the day or a premium or discount in the closing price from the Fund's NAV. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Small and Medium Capitalization Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Small and Medium Capitalization Risk. The risk that small and medium capitalization companies in which the Fund may invest may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small and medium capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small capitalization and medium capitalization stocks may be more volatile than those of larger companies. Small capitalization and medium capitalization stocks may be traded over-the-counter (OTC). OTC stocks may trade less frequently and in smaller volume than exchange listed stocks and may have more price volatility than that of exchange-listed stocks. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Risk of Investing in the U.S. [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Risk of Investing in the U.S. Certain changes in the U.S. economy, such as when the U.S. economy weakens or when its financial markets decline, may have an adverse effect on the securities to which the Fund has exposure. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Issuer Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Issuer Risk. The performance of the Fund depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the Fund to decline. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Market Trading Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Trading Risk. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Active trading markets for the Fund's shares may not be developed or maintained by market makers or Authorized Participants (as defined below). Authorized Participants are not obligated to make a market in the Fund's shares or to submit purchase or redemption orders for Creation Units (as defined below). In times of market stress, market makers or Authorized Participants may step away from their respective roles, which could lead to variances between the market price of the Fund's shares and its underlying NAV. Trading in shares on an exchange may be halted in certain circumstances. If a trading halt occurs, a shareholder may temporarily be unable to purchase or sell shares of the Fund. Any of these factors could lead the Fund's shares to trade at a premium or discount to NAV. Thus, you may pay more (or less) than NAV when you buy shares of the Fund in the secondary market, and you may receive less (or more) than NAV when you sell those shares in the secondary market, particularly during times of market stress. SIMC or a Sub-Adviser cannot predict whether shares will trade above (premium), below (discount) or at NAV or whether the spread between bid and ask prices will widen. In addition, there can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Fund will continue to be met. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Liquidity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Liquidity Risk. In stressed market conditions, the market for a Fund's shares may become less liquid in response to deteriorating liquidity in the markets for the Fund's underlying portfolio holdings. This adverse effect on liquidity for the Fund's shares in turn could lead to differences between the market price of the Fund's shares and its underlying NAV and/or widening the spread between bid and ask prices. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk. SIMC or a Sub-Adviser may not successfully implement the Fund's investment strategies and, as a result, the Fund may not meet its investment objective and/or underperform other investment vehicles with similar investment objectives and strategies. Errors or delays in coordinating creation and redemption basket processes among Sub-Advisers can also reduce the Fund's performance. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Operational Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] |
Operational Risk. The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third parties, failed or inadequate processes and technology or systems failures. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Authorized Participant Concentration Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Authorized Participant Concentration Risk. Only broker-dealers (referred to as Authorized Participants or APs) that have executed authorized participation agreements with respect to the Trust may engage in creation or redemption transactions directly with the Fund, and no AP is obligated to engage in creation and/or redemption transactions. To the extent that APs exit the business or are unable to proceed with orders, Fund shares may be more likely to trade at a premium or discount to NAV, have wider spreads between bid and ask prices, have wider spreads between bid and ask prices or face trading halts or delisting. |
| SEI Select Small Cap ETF | SEI Select Small Cap ETF | Cybersecurity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cybersecurity Risk. Failures or breaches of the electronic systems of the Fund, SIMC, a Sub-Adviser, the Fund's distributor, and other service providers, market makers, APs or the issuers of securities in which the Fund invests have the ability to cause disruptions, negatively impact the Fund's business operations and/or potentially result in financial losses to the Fund and its shareholders. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Risk Not Insured [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Fund is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, SIMC or any of its affiliates. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk. Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Value Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Value Securities Risk. Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. SIMC or a Sub-Adviser may be unsuccessful in identifying undervalued securities. Value securities have generally performed better than non-value securities during periods of economic recovery (although there is no assurance that they will continue to do so). Value securities may go in and out of favor over time. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Low Volatility Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Low Volatility Risk. Although subject to the risks of common stocks, low volatility stocks are seen as having a lower risk profile than the overall markets. However, a portfolio comprised of low volatility stocks may not produce investment exposure that has lower variability to changes in such stocks' price levels. Low volatility stocks are likely to underperform the broader market during periods of rapidly rising stock prices when market volatility is high. Low volatility stocks also may not protect against market declines. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Momentum Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Momentum Securities Risk. Stocks that previously exhibited high momentum characteristics may not experience positive momentum or may experience more volatility than the market as a whole. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Quality Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quality Securities Risk. There is no guarantee that the past performance of stocks that SIMC or a Sub-Adviser determines are quality will continue. Companies that issue these stocks may experience lower than expected returns or may experience negative growth, as well as increased leverage, resulting in lower than expected or negative returns to Fund shareholders. Many factors can affect a stock's quality and performance, and the impact of these factors on a stock or its price can be difficult to predict. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Quantitative Investing Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quantitative Investing Risk. Due to the significant role technology plays in quantitative strategies, they carry the risk of unintended or unrecognized issues or flaws in the design, coding, implementation or maintenance of the computer programs or technology used in the development and implementation of the quantitative strategy. Utility interruptions or other key systems outages also can impair the performance of quantitative investment strategies. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Risk. The market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the equity or bond market as a whole. The Fund's market price may deviate from the value of the Fund's underlying portfolio holdings, particularly in times of market stress, with the result that investors may pay significantly more or receive significantly less than the underlying value of the Fund shares bought or sold. This can be reflected as a spread between the bid and ask prices for the Fund quoted during the day or a premium or discount in the closing price from the Fund's NAV. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Large Capitalization Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Large Capitalization Risk. The risk that larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and consumer tastes. Larger companies also may not be able to attain the high growth rates of successful smaller companies. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Small and Medium Capitalization Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Small and Medium Capitalization Risk. The risk that small and medium capitalization companies in which the Fund may invest may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small and medium capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small capitalization and medium capitalization stocks may be more volatile than those of larger companies. Small capitalization and medium capitalization stocks may be traded over-the-counter (OTC). OTC stocks may trade less frequently and in smaller volume than exchange listed stocks and may have more price volatility than that of exchange-listed stocks. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Issuer Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Issuer Risk. The performance of the Fund depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the Fund to decline. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Market Trading Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Trading Risk. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Active trading markets for the Fund's shares may not be developed or maintained by market makers or Authorized Participants (as defined below). Authorized Participants are not obligated to make a market in the Fund's shares or to submit purchase or redemption orders for Creation Units (as defined below). In times of market stress, market makers or Authorized Participants may step away from their respective roles, which could lead to variances between the market price of the Fund's shares and its underlying NAV. Trading in shares on an exchange may be halted in certain circumstances. If a trading halt occurs, a shareholder may temporarily be unable to purchase or sell shares of the Fund. Any of these factors could lead the Fund's shares to trade at a premium or discount to NAV. Thus, you may pay more (or less) than NAV when you buy shares of the Fund in the secondary market, and you may receive less (or more) than NAV when you sell those shares in the secondary market, particularly during times of market stress. SIMC or a Sub-Adviser cannot predict whether shares will trade above (premium), below (discount) or at NAV or whether the spread between bid and ask prices will widen. In addition, there can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Fund will continue to be met. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Foreign Investment/Emerging Markets Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Foreign Investment/Emerging Markets Risk. The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environments. These additional risks may be heightened with respect to emerging market countries because political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Investments in emerging markets are subject to the added risk that information in emerging market investments may be unreliable or outdated due to differences in regulatory, accounting or auditing and financial record keeping standards, or because less information about emerging market investments is publicly available. In addition, the rights and remedies associated with emerging market investments may be different than investments in developed markets. A lack of reliable information, rights and remedies increase the risks of investing in emerging markets in comparison to more developed markets. In addition, periodic U.S. Government restrictions on investments in issuers from certain foreign countries may require the Fund to sell such investments at inopportune times, which could result in losses to the Fund. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Currency Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Currency Risk. As a result of the Fund's investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Participation Notes (P-Notes) Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Participation Notes (P-Notes) Risk. P-Notes are participation interest notes that are issued by banks or broker-dealers and are designed to offer a return linked to a particular underlying equity, debt, currency or market. Investments in P-Notes involve the same risks associated with a direct investment in the underlying foreign companies or foreign securities markets that they seek to replicate. However, there can be no assurance that the trading price of P-Notes will equal the underlying value of the foreign companies or foreign securities markets that they seek to replicate. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Depositary Receipts Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Depositary Receipts Risk. Depositary receipts, such as American Depositary Receipts, are certificates evidencing ownership of shares of a foreign issuer that are issued by depositary banks and generally trade on an established market. Depositary receipts are subject to many of the risks associated with investing directly in foreign securities, including, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environment. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Liquidity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Liquidity Risk. The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price of the security, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk. SIMC or a Sub-Adviser may not successfully implement the Fund's investment strategies and, as a result, the Fund may not meet its investment objective and/or underperform other investment vehicles with similar investment objectives and strategies. Errors or delays in coordinating creation and redemption basket processes among Sub-Advisers can also reduce the Fund's performance. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Operational Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] |
Operational Risk. The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third parties, failed or inadequate processes and technology or systems failures. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Authorized Participant Concentration Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Authorized Participant Concentration Risk. Only broker-dealers (referred to as Authorized Participants or APs) that have executed authorized participation agreements with respect to the Trust may engage in creation or redemption transactions directly with the Fund, and no AP is obligated to engage in creation and/or redemption transactions. To the extent that APs exit the business or are unable to proceed with orders, Fund shares may be more likely to trade at a premium or discount to NAV, have wider spreads between bid and ask prices or face trading halts or delisting. |
| SEI Select International Equity ETF | SEI Select International Equity ETF | Cybersecurity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cybersecurity Risk. Failures or breaches of the electronic systems of the Fund, SIMC, a Sub-Adviser, the Fund's distributor, and other service providers, market makers, APs or the issuers of securities in which the Fund invests have the ability to cause disruptions, negatively impact the Fund's business operations and/or potentially result in financial losses to the Fund and its shareholders. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Risk Not Insured [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Fund is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, SIMC or any of its affiliates. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk. Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Value Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Value Securities Risk. Securities issued by companies that may be perceived as undervalued may fail to appreciate for long periods of time and may never realize their full potential value. SIMC or a Sub-Adviser may be unsuccessful in identifying undervalued securities. Value securities have generally performed better than non-value securities during periods of economic recovery (although there is no assurance that they will continue to do so). Value securities may go in and out of favor over time. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Low Volatility Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Low Volatility Risk. Although subject to the risks of common stocks, low volatility stocks are seen as having a lower risk profile than the overall markets. However, a portfolio comprised of low volatility stocks may not produce investment exposure that has lower variability to changes in such stocks' price levels. Low volatility stocks are likely to underperform the broader market during periods of rapidly rising stock prices when market volatility is high. Low volatility stocks also may not protect against market declines. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Momentum Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Momentum Securities Risk. Stocks that previously exhibited high momentum characteristics may not experience positive momentum or may experience more volatility than the market as a whole. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Quality Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quality Securities Risk. There is no guarantee that the past performance of stocks that SIMC or a Sub-Adviser determines are quality will continue. Companies that issue these stocks may experience lower than expected returns or may experience negative growth, as well as increased leverage, resulting in lower than expected or negative returns to Fund shareholders. Many factors can affect a stock's quality and performance, and the impact of these factors on a stock or its price can be difficult to predict. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Quantitative Investing Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quantitative Investing Risk. Due to the significant role technology plays in quantitative strategies, they carry the risk of unintended or unrecognized issues or flaws in the design, coding, implementation or maintenance of the computer programs or technology used in the development and implementation of the quantitative strategy. Utility interruptions or other key systems outages also can impair the performance of quantitative investment strategies. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Risk. The market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the equity or bond market as a whole. The Fund's market price may deviate from the value of the Fund's underlying portfolio holdings, particularly in times of market stress, with the result that investors may pay significantly more or receive significantly less than the underlying value of the Fund shares bought or sold. This can be reflected as a spread between the bid and ask prices for the Fund quoted during the day or a premium or discount in the closing price from the Fund's NAV. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Large Capitalization Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Large Capitalization Risk. The risk that larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and consumer tastes. Larger companies also may not be able to attain the high growth rates of successful smaller companies. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Small and Medium Capitalization Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Small and Medium Capitalization Risk. The risk that small and medium capitalization companies in which the Fund may invest may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small and medium capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small capitalization and medium capitalization stocks may be more volatile than those of larger companies. Small capitalization and medium capitalization stocks may be traded over-the-counter (OTC). OTC stocks may trade less frequently and in smaller volume than exchange listed stocks and may have more price volatility than that of exchange-listed stocks. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Issuer Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Issuer Risk. The performance of the Fund depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the Fund to decline. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Market Trading Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Trading Risk. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Active trading markets for the Fund's shares may not be developed or maintained by market makers or Authorized Participants (as defined below). Authorized Participants are not obligated to make a market in the Fund's shares or to submit purchase or redemption orders for Creation Units (as defined below). In times of market stress, market makers or Authorized Participants may step away from their respective roles, which could lead to variances between the market price of the Fund's shares and its underlying NAV. Trading in shares on an exchange may be halted in certain circumstances. If a trading halt occurs, a shareholder may temporarily be unable to purchase or sell shares of the Fund. Any of these factors could lead the Fund's shares to trade at a premium or discount to NAV. Thus, you may pay more (or less) than NAV when you buy shares of the Fund in the secondary market, and you may receive less (or more) than NAV when you sell those shares in the secondary market, particularly during times of market stress. SIMC or a Sub-Adviser cannot predict whether shares will trade above (premium), below (discount) or at NAV or whether the spread between bid and ask prices will widen. In addition, there can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Fund will continue to be met. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Foreign Investment/Emerging Markets Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Foreign Investment/Emerging Markets Risk. The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environments. These additional risks may be heightened with respect to emerging market countries because political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Investments in emerging markets are subject to the added risk that information in emerging market investments may be unreliable or outdated due to differences in regulatory, accounting or auditing and financial record keeping standards, or because less information about emerging market investments is publicly available. In addition, the rights and remedies associated with emerging market investments may be different than investments in developed markets. A lack of reliable information, rights and remedies increase the risks of investing in emerging markets in comparison to more developed markets. In addition, periodic U.S. Government restrictions on investments in issuers from certain foreign countries may require the Fund to sell such investments at inopportune times, which could result in losses to the Fund. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Country Concentration Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Country Concentration Risk. The Fund's concentration of its assets in issuers located in a single country or a limited number of countries will increase the impact of, and potential losses associated with, the risks set forth in the Foreign Investment/Emerging Markets Risk. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Risk of Investing in China [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Risk of Investing in China. China is an emerging market, and as a result, investments in securities of companies organized and listed in China may be subject to liquidity constraints and significantly higher volatility, from time to time, than investments in securities of more developed markets. China may be subject to considerable government intervention and varying degrees of economic, political and social instability. Internal social unrest or confrontations with other neighboring countries could have a significant impact on the economy of China. Reduction in spending on Chinese products and services, institution of tariffs or other trade barriers, or a downturn in any of the economies of China's key trading partners may have an adverse impact on the Chinese economy. There also is no guarantee that the Chinese government will not revert from its current open-market economy to an economic policy of central planning. These factors may result in, among other things, a greater risk of stock market, interest rate, and currency fluctuations, as well as inflation. Accounting, auditing and financial reporting standards in China are different from U.S. standards and, therefore, disclosure of certain material information may not be made, may be less available, or may be less reliable. It may also be difficult or impossible for the Fund, U.S. authorities and regulators to obtain or enforce a judgment in a Chinese court. In addition, periodic U.S. Government restrictions on investments in Chinese companies may result in a Fund having to sell such prohibited securities at inopportune times. Such prohibited securities may have less liquidity as a result of such U.S. Government designation and the market price of such prohibited securities may decline, which may cause the Fund to incur losses. The Fund may also be subject to additional risks related to investments in VIEs. Instead of directly owning the equity securities of a Chinese company, a VIE enters into service and other contracts with the Chinese company. Although the VIE has no equity ownership of the Chinese company, the contractual arrangements permit the VIE to consolidate the Chinese company into its financial statements. Intervention by the Chinese government with respect to VIEs could significantly affect the Chinese company's performance and the enforceability of the VIE's contractual arrangements with the Chinese company. The Fund may, directly or indirectly, purchase China A-Shares through Stock Connect or that may be available in the future through additional stock connect programs, a mutual market access program designed to, among other things, enable foreign investment in the People's Republic of China (PRC) via brokers in Hong Kong. There are significant risks inherent in investing in China A-Shares through Stock Connect. The underdeveloped state of PRC's investment and banking systems subjects the settlement, clearing, and registration of China A-Shares transactions to heightened risks. Stock Connect can only operate when both PRC and Hong Kong markets are open for trading and when banking services are available in both markets on the corresponding settlement days. As such, if either or both markets are closed on a U.S. trading day, the Fund may not be able to dispose of its China A-Shares in a timely manner, which could adversely affect the Fund's performance. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Currency Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Currency Risk. As a result of the Fund's investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Participation Notes (P-Notes) Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Participation Notes (P-Notes) Risk. P-Notes are participation interest notes that are issued by banks or broker-dealers and are designed to offer a return linked to a particular underlying equity, debt, currency or market. Investments in P-Notes involve the same risks associated with a direct investment in the underlying foreign companies or foreign securities markets that they seek to replicate. However, there can be no assurance that the trading price of P-Notes will equal the underlying value of the foreign companies or foreign securities markets that they seek to replicate. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Depositary Receipts Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Depositary Receipts Risk. Depositary receipts, such as American Depositary Receipts, are certificates evidencing ownership of shares of a foreign issuer that are issued by depositary banks and generally trade on an established market. Depositary receipts are subject to many of the risks associated with investing directly in foreign securities, including, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environment. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Liquidity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Liquidity Risk. In stressed market conditions, the market for a Fund's shares may become less liquid in response to deteriorating liquidity in the markets for the Fund's underlying portfolio holdings. This adverse effect on liquidity for the Fund's shares in turn could lead to differences between the market price of the Fund's shares and its underlying NAV and/or widening the spread between bid and ask prices. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk. SIMC or a Sub-Adviser may not successfully implement the Fund's investment strategies and, as a result, the Fund may not meet its investment objective and/or underperform other investment vehicles with similar investment objectives and strategies. Errors or delays in coordinating creation and redemption basket processes among Sub-Advisers can also reduce the Fund's performance. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Operational Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] |
Operational Risk. The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third parties, failed or inadequate processes and technology or systems failures. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Authorized Participant Concentration Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Authorized Participant Concentration Risk. Only broker-dealers (referred to as Authorized Participants or APs) that have executed authorized participation agreements with respect to the Trust may engage in creation or redemption transactions directly with the Fund, and no AP is obligated to engage in creation and/or redemption transactions. To the extent that APs exit the business or are unable to proceed with orders, Fund shares may be more likely to trade at a premium or discount to NAV, have wider spreads between bid and ask prices or face trading halts or delisting. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Cybersecurity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cybersecurity Risk. Failures or breaches of the electronic systems of the Fund, SIMC, a Sub-Adviser, the Fund's distributor, and other service providers, market makers, APs or the issuers of securities in which the Fund invests have the ability to cause disruptions, negatively impact the Fund's business operations and/or potentially result in financial losses to the Fund and its shareholders. |
| SEI Select Emerging Markets Equity ETF | SEI Select Emerging Markets Equity ETF | Cash Transactions Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cash Transactions Risk. The Fund, unlike certain other ETFs, may effect creations and redemptions partly or wholly for cash, rather than through in-kind distributions of securities. Because the Fund may effect redemptions for cash rather than in-kind, the Fund may be required to sell portfolio securities in order to obtain the cash needed to distribute redemption proceeds and it may subsequently recognize gains on such sales that the Fund might not have recognized if it were to distribute portfolio securities in-kind. As a result, an investment in the Fund may be less tax-efficient than an investment in an ETF that primarily or wholly effects creations and redemptions in-kind. Moreover, cash transactions may have to be carried out over several days if the securities markets are relatively illiquid at the time the Fund must sell securities and may involve considerable brokerage fees and taxes. These brokerage fees and taxes, which will be higher than if the Fund sold and redeemed its shares principally in-kind, will be passed on to purchasers and redeemers of Creation Units in the form of creation and redemption transaction fees. As a result of these factors, the spreads between the bid and the offered prices of the Fund's shares may be wider than those of shares of ETFs that primarily or wholly transact in-kind. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Risk Not Insured [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Fund is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, SIMC or any of its affiliates. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Derivatives Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Derivatives Risk. The Fund's use of futures contracts, forward contracts, options and swaps is subject to market risk, leverage risk, correlation risk and liquidity risk. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Leverage risk and liquidity risk are described below. Many over-the-counter (OTC) derivative instruments will not have liquidity beyond the counterparty to the instrument. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of forward contracts and swap agreements is also subject to credit risk and valuation risk. Credit risk is described below. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. The other parties to certain derivative contracts present the same types of credit risk as issuers of fixed income securities. The Fund's use of derivatives may also increase the amount of taxes payable by shareholders. Both U.S. and non-U.S. regulators have adopted and implemented regulations governing derivatives markets, the ultimate impact of which remains unclear. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Long/Short Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Long/Short Risk. The Fund seeks long exposure to certain financial instruments and short exposure to certain other financial instruments. There is no guarantee that the returns on the Fund's long or short positions will produce positive returns and the Fund could lose money if either or both the Fund's long and short positions produce negative returns. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Asset Allocation Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Asset Allocation Risk. Through the Fund's investments in derivatives it is indirectly subject to asset allocation risk, which is the risk that the allocation of the Fund's assets among various asset classes will cause the Fund to underperform other funds with a similar investment objective and/or underperform the markets in which the Fund invests. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Quantitative Investing Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Quantitative Investing Risk. A quantitative investment style generally involves the use of computers to implement a systematic or rules-based approach to selecting investments based on specific measurable factors. Due to the significant role technology plays in such strategies, they carry the risk of unintended or unrecognized issues or flaws in the design, coding, implementation or maintenance of the computer programs or technology used in the development and implementation of the quantitative strategy. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Investment Style [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Investment Style. Investment style risk is the risk that the Fund's investment in certain securities in a particular market segment pursuant to its particular investment strategy may underperform other market segments or the market as a whole. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | U.S. Government Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | U.S. Government Securities Risk. The Fund may be exposed to U.S. government securities risk through the Fund's investments in derivatives. Although U.S. Government securities are considered to be among the safest investments, they are still subject to the credit risk of the U.S. Government and are not guaranteed against price movements due to changing interest rates. Obligations issued by some U.S. Government agencies are backed by the U.S. Treasury, while others are backed solely by the ability of the agency to borrow from the U.S. Treasury or by the agency's own resources. No assurance can be given that the U.S. Government will provide financial support to its agencies and instrumentalities if it is not obligated by law to do so. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Market Trading Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Trading Risk. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Active trading markets for the Fund's shares may not be developed or maintained by market makers or Authorized Participants (as defined above). Authorized Participants are not obligated to make a market in the Fund's shares or to submit purchase or redemption orders for Creation Units (as defined below). In times of market stress, market makers or Authorized Participants may step away from their respective roles, which could lead to variances between the market price of the Fund's shares and its underlying NAV. Trading in shares on an exchange may be halted in certain circumstances. If a trading halt occurs, a shareholder may temporarily be unable to purchase or sell shares of the Fund. Any of these factors could lead the Fund's shares to trade at a premium or discount to NAV. Thus, you may pay more (or less) than NAV when you buy shares of the Fund in the secondary market, and you may receive less (or more) than NAV when you sell those shares in the secondary market, particularly during times of market stress. SIMC or a Sub-Adviser cannot predict whether shares will trade above (premium), below (discount) or at NAV or whether the spread between bid and ask prices will widen. In addition, there can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Fund will continue to be met. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Foreign Investment/Emerging Markets Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Foreign Investment/Emerging Markets Risk. The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environments. These additional risks may be heightened with respect to emerging market countries because political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Investments in emerging markets are subject to the added risk that information in emerging market investments may be unreliable or outdated due to differences in regulatory, accounting or auditing and financial record keeping standards, or because less information about emerging market investments is publicly available. In addition, the rights and remedies associated with emerging market investments may be different than investments in developed markets. A lack of reliable information, rights and remedies increase the risks of investing in emerging markets in comparison to more developed markets. In addition, periodic U.S. Government restrictions on investments in issuers from certain foreign countries may require the Fund to sell such investments at inopportune times, which could result in losses to the Fund. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Asset-Backed Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Asset-Backed Securities Risk. The Fund may be exposed to asset-backed securities risk through the Fund's investments in derivatives. Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities. Securitization trusts generally do not have any assets or sources of funds other than the receivables and related property they own, and asset-backed securities are generally not insured or guaranteed by the related sponsor or any other entity. Asset-backed securities may be more illiquid than more conventional types of fixed income securities that the Fund may acquire. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Mortgage-Backed Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Mortgage-Backed Securities Risk. The Fund may be exposed to mortgage-backed securities risk through the Fund's investments in derivatives. Mortgage-backed securities are affected significantly by the rate of prepayments and modifications of the mortgage loans backing those securities, as well as by other factors such as borrower defaults, delinquencies, realized or liquidation losses and other shortfalls. Mortgage-backed securities are particularly sensitive to prepayment risk, which is described below, given that the term to maturity for mortgage loans is generally substantially longer than the expected lives of those securities; however, the timing and amount of prepayments cannot be accurately predicted. The timing of changes in the rate of prepayments of the mortgage loans may significantly affect the Fund's actual yield to maturity on any mortgage-backed securities, even if the average rate of principal payments is consistent with the Fund's expectation. Along with prepayment risk, mortgage-backed securities are significantly affected by interest rate risk, which is described below. In a low interest rate environment, mortgage loan prepayments would generally be expected to increase due to factors such as refinancings and loan modifications at lower interest rates. In contrast, if prevailing interest rates rise, prepayments of mortgage loans would generally be expected to decline and therefore extend the weighted average lives of mortgage-backed securities held or acquired by the Fund. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Mortgage Dollar Rolls Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Mortgage Dollar Rolls Risk. The Fund may be exposed to mortgage dollar rolls risk through the Fund's investments in derivatives. Mortgage dollar rolls are transactions in which the Fund sells securities (usually mortgage-backed securities) and simultaneously contracts to repurchase substantially similar, but not identical, securities on a specified future date. If the broker-dealer to whom the Fund sells the security becomes insolvent, the Fund's right to repurchase the security may be restricted. Other risks involved in entering into mortgage dollar rolls include the risk that the value of the security may change adversely over the term of the mortgage dollar roll and that the security the Fund is required to repurchase may be worth less than the security that the Fund originally held. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Below Investment Grade Securities (Junk Bonds) Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Below Investment Grade Securities (Junk Bonds) Risk. The Fund may be exposed to below investment grade securities (junk bond) risk through the Fund's investments in derivatives. Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are generally more volatile than investment grade securities because the prospect for repayment of principal and interest of many of these securities is speculative. Because these securities typically offer a higher rate of return to compensate investors for these risks, they are sometimes referred to as "high yield bonds," but there is no guarantee that an investment in these securities will result in a high rate of return. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Preferred Stock Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Preferred Stock Risk. The Fund may be exposed to preferred stock risk through the Fund's investments in derivatives. Preferred stock represents an equity or ownership interest in an issuer that pays dividends at a specified rate and that has precedence over common stock in the payment of dividends. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of bonds take precedence over the claims of those who own preferred and common stock. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Currency Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Currency Risk. Currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Due to the Fund's investments in securities, including debt securities, denominated in foreign currencies, as well as the Fund's investments in currency futures contracts, it will be subject to the risk that currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad. Although the Sub-Adviser may use currency futures contracts in an attempt to mitigate currency risk, there is no guarantee that such positions will be successful in reducing the risk in the portfolio. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Equity Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Market Risk. The Fund may be exposed to equity market risk through the Fund's investments in derivatives. Equity market risk is the risk that the market value of an equity security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the equity or bond market as a whole. Equity markets may decline significantly in response to adverse issuer, political, regulatory, market, economic or other developments that may cause broad changes in market value, public perceptions concerning these developments, and adverse investor sentiment or publicity. Similarly, environmental and public health risks, such as natural disasters, epidemics, pandemics or widespread fear that such events may occur, may impact markets adversely and cause market volatility in both the short- and long-term. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Fixed Income Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Fixed Income Market Risk. The Fund may be exposed to fixed income market risk through the Fund's investments in derivatives or through the Fund's investments in ETFs. The prices of the fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. Generally, fixed income securities will decrease in value if interest rates rise and vice versa. In a low interest rate environment, risks associated with rising rates are heightened. Declines in dealer market-making capacity as a result of structural or regulatory changes could decrease liquidity and/or increase volatility in the fixed income markets. Markets for fixed income securities may decline significantly in response to adverse issuer, political, regulatory, market, economic or other developments that may cause broad changes in market value, public perceptions concerning these developments, and adverse investor sentiment or publicity. Similarly, environmental and public health risks, such as natural disasters, epidemics, pandemics or widespread fear that such events may occur, may impact markets adversely and cause market volatility in both the short- and long-term. In response to these events, the Fund's value may fluctuate and/or the Fund may experience increased redemptions from shareholders, which may impact the Fund's liquidity or force the Fund (or an underlying ETF) to sell investments into a declining or illiquid market. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Information Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Information Risk. The Sub-Adviser relies on information published by third parties when constructing and maintaining the Composite, including information about private funds. Because private funds are only required to make limited information about their operations and investments publicly available, the information used by the Sub-Adviser may be incomplete, inaccurate or out of date and the Sub-Adviser will be limited it its ability to verify the accuracy of such information. In addition, because any errors in the underlying data sources may not be readily discoverable, the Sub-Adviser could make investment decisions based on inaccurate information, which could influence the Fund's investments, alter the Fund's risk profile and change the Fund's performance. Data sources used by the Sub-Adviser (or underlying data sources used by third parties on which the Sub-Adviser relies) could change the frequency with which they make data available or change the universe of data that is available, both of which could affect the Sub-Adviser's ability to construct and maintain the Composite. Changes in regulation could result in such data providers deciding to cease or substantially change their business, which could similarly affect the Sub-Adviser. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Exchange-Traded Funds Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Exchange-Traded Funds Risk. The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. When the Fund invests in an ETF, in addition to directly bearing the expenses associated with its own operations, it will bear a pro rata portion of the ETF's expenses. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Real Estate Investment Trusts (REITs) Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Real Estate Investment Trusts (REITs) Risk. The Fund may be exposed to REITs risk through the Fund's investments in derivatives. REITs are trusts that invest primarily in commercial real estate or real estate-related loans. The Fund's indirect investments in REITs will be subject to the risks associated with the direct ownership of real estate. Risks commonly associated with the direct ownership of real estate include fluctuations in the value of underlying properties, defaults by borrowers or tenants, changes in interest rates and risks related to general or local economic conditions. Some REITs may have limited diversification and may be subject to risks inherent in financing a limited number of properties. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Corporate Fixed Income Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Corporate Fixed Income Securities Risk. The Fund may be exposed to corporate fixed income securities risk through the Fund's investments in derivatives. Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | To-Be-Announced (TBA) Transactions Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | To-Be-Announced (TBA) Transactions Risk. The Fund may be exposed to TBA transactions risk through the Fund's investments in derivatives. TBA purchase commitments involve a risk of loss if the value of the securities to be purchased declines prior to the settlement date or if the counterparty does not deliver the securities as promised. Selling a TBA involves a risk of loss if the value of the securities to be sold goes up prior to settlement date. TBA transactions involve counterparty risk. Default or bankruptcy of a counterparty to a TBA transaction would expose the Fund to potential loss and could affect the Fund's returns. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Depositary Receipts Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Depositary Receipts Risk. The Fund may be exposed to depositary receipts risk through the Fund's investments in derivatives. Depositary receipts, such as ADRs, are certificates evidencing ownership of shares of a foreign issuer that are issued by depositary banks and generally trade on an established market. Depositary receipts are subject to many of the risks associated with investing directly in foreign securities, including, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory, tax, accounting and audit environments. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Zero Coupon Bonds Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Zero Coupon Bonds Risk. Zero-coupon bonds usually trade at a deep discount from their face or par values and are subject to greater market value fluctuations from changing interest rates than debt obligations of comparable maturities that make current distributions of interest. Zero-coupon bonds may also be subject to unique tax considerations for the Fund. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Liquidity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Liquidity Risk. The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price of the security, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. In stressed market conditions, the market for the Fund's shares may become less liquid in response to deteriorating liquidity in the market for the Fund's underlying holdings. This adverse effect on the liquidity of the Fund's shares may, in turn, lead to wider bid-ask spreads and differences between the market value of the Fund's shares and the Fund's net asset value. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Leverage Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Leverage Risk. The Fund's use of derivatives may result in the Fund's total investment exposure substantially exceeding the value of its portfolio securities and the Fund's investment returns depending substantially on the performance of securities that the Fund may not directly own. The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. The Fund's use of leverage may result in a heightened risk of investment loss. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Credit Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Credit Risk. The risk that the issuer of a security or the counterparty to a contract will default or otherwise become unable to honor a financial obligation. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Tax Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Tax Risk. To the extent the Fund invests in commodities and commodity derivatives, it will seek to restrict its income from such investments that do not generate qualifying income, to a maximum of 10% of its gross income (when combined with its other investments that produce non-qualifying income) to permit the Fund to comply with certain qualifying income tests necessary for the Fund to qualify as a regulated investment company (RIC) under Subchapter M of the Internal Revenue Code of 1986, as amended (the Code). However, the Fund may generate more non-qualifying income than anticipated, may not be able to generate qualifying income in a particular taxable year at levels sufficient to meet the qualifying income test, or may not be able to accurately predict the non-qualifying income from these investments. Failure to comply with the qualifying income test could have significant negative consequences to Fund shareholders. The tax treatment of the commodity futures in which the Fund invests may be affected by future regulatory or legislative changes that could affect the character, timing and/or amount of the Fund's taxable income or gains and distributions. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Interest Rate Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Interest Rate Risk. The risk that a change in interest rates will cause a fall in the value of fixed income securities, including U.S. Government securities. Generally, the value of fixed income securities will vary inversely with the direction of prevailing interest rates. Changing interest rates may have unpredictable effects on the markets and may affect the value and liquidity of instruments held. Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Duration Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Duration Risk. Longer-term securities tend to be more volatile than shorter-term securities. A portfolio with a longer average portfolio duration is more sensitive to changes in interest rates than a portfolio with a shorter average portfolio duration. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Extension Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Extension Risk. The risk that rising interest rates may extend the duration of a fixed income security, typically reducing the security's value. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Prepayment Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Prepayment Risk. The risk that, in a declining interest rate environment, fixed income securities with stated interest rates may have the principal paid earlier than expected, which may cause proceeds to be reinvested at generally lower interest rates. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Operational Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Operational Risk. The Fund is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Authorized Participant Concentration Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Authorized Participant Concentration Risk. Only broker-dealers (referred to as Authorized Participants or APs) that have executed authorized participation agreements with respect to the Trust may engage in creation or redemption transactions directly with the Fund, and no AP is obligated to engage in creation and/or redemption transactions. To the extent that APs exit the business or are unable to proceed with orders, Fund shares may be more likely to trade at a premium or discount to NAV, have wider spreads between bid and ask prices, have wider spreads between bid and ask prices or face trading halts or delisting. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Cybersecurity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cybersecurity Risk. Failures or breaches of the electronic systems of the Fund, SIMC, the Fund's distributor, and other service providers, market makers, APs or the issuers of securities in which the Fund invests have the ability to cause disruptions, negatively impact the Fund's business operations and/or potentially result in financial losses to the Fund and its shareholders. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Cash Transactions Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cash Transactions Risk. The Fund intends to effectuate all or a portion of the issuance and redemption of Creation Units for cash, rather than in-kind securities. As a result, an investment in the Fund is expected to be less tax-efficient than an investment in an ETF that effectuates its transactions in Creation Units primarily on an in-kind basis. A fund that effects redemptions for cash may be required to sell portfolio securities in order to obtain the cash needed to distribute redemption proceeds. Any recognized gain on these sales by the Fund will generally cause the Fund to recognize a gain it might not otherwise have recognized, or to recognize such gain sooner than would otherwise be required as compared to an ETF that distributes portfolio securities in-kind in redemption of Creation Units. The Fund intends to distribute gains that arise by virtue of the issuance and redemption of Creation Units being effectuated in cash to shareholders to avoid being taxed on this gain at the fund level and otherwise comply with applicable tax requirements. This may cause shareholders to be subject to tax on gains to which they would not otherwise be subject, or at an earlier date than if they had made an investment in another ETF. Moreover, cash transactions may have to be carried out over several days if the securities market is relatively illiquid and may involve considerable brokerage fees and taxes. Brokerage fees, which will be higher than if the Fund sold and redeemed its shares principally in-kind, will be passed on to those purchasing and redeeming Creation Units in the form of creation and redemption transaction fees. In addition, these factors may result in wider spreads between the bid and ask prices of Fund shares than for fees. In addition, these factors may result in wider spreads between the bid and ask prices of Fund shares than for ETFs that receive and distribute portfolio securities in-kind. The Fund's use of cash for creations and redemptions could also result in dilution to the Fund and increased transaction costs, which could negatively impact the Fund's ability to achieve its investment objective ability to achieve its investment objective. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Cash Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Cash Management Risk. The value of the investments held by the Fund for cash management purposes may be affected by market risks, changing interest rates and by changes in credit ratings of the investments. To the extent that the Fund has any uninvested cash, the Fund would be subject to credit risk with respect to the depository institution holding the cash. If the Fund holds uninvested cash, the Fund will not earn income on the cash. During such periods, it may be more difficult for the Fund to achieve its investment objective. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Money Market Funds [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Money Market Funds. An investment in a money market fund is not a bank deposit and is not insured or guaranteed by any bank, the Federal Deposit Insurance Corporation (FDIC) or any other government agency. Certain money market funds float their NAV while others seek to preserve the value of investments at a stable NAV (typically, $1.00 per share). An investment in a money market fund, even an investment in a fund seeking to maintain a stable NAV per share, is not guaranteed and it is possible for the Fund to lose money by investing in these and other types of money market funds. If the liquidity of a money market fund's portfolio deteriorates below certain levels, the money market fund may suspend redemptions (i.e., impose a redemption gate) and thereby prevent the Fund from selling its investment in the money market fund or impose a fee of up to 2% on amounts the Fund redeems from the money market fund (i.e., impose a liquidity fee). To the extent the Fund invests in derivative instruments, the Fund may hold investments, which may be significant, in money market fund shares to cover its obligations resulting from the Fund's investments in such instruments. Money market funds and the securities they invest in are subject to comprehensive regulations. The enactment of new legislation or regulations, as well as changes in interpretation and enforcement of current laws, may affect the manner of operation, performance and/or yield of money market funds. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Commercial Paper Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Commercial Paper Risk. The Fund may be exposed to commercial paper risk through the Fund's investments in derivatives. Commercial paper is a short-term obligation with a maturity generally ranging from one to 270 days and is issued by U.S. or foreign companies or other entities in order to finance their current operations. Such investments are unsecured and usually discounted from their value at maturity. The value of commercial paper may be affected by changes in the credit rating or financial condition of the issuing entities and will tend to fall when interest rates rise and rise when interest rates fall. Asset-backed commercial paper may be issued by structured investment vehicles or other conduits that are organized to issue the commercial paper and to purchase trade receivables or other financial assets. The repayment of asset-backed commercial paper depends primarily on the cash collections received from such issuer's underlying asset portfolio and the issuer's ability to issue new asset-backed commercial paper. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Warrants Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Warrants Risk. The Fund may be exposed to warrants risk through the Fund's investments in derivatives. Warrants are instruments that entitle the holder to buy an equity security at a specific price for a specific period of time. Warrants may be more speculative than other types of investments. The price of a warrant may be more volatile than the price of its underlying security, and a warrant may offer greater potential for capital appreciation as well as capital loss. A warrant ceases to have value if it is not exercised prior to its expiration date. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Supranational Entities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Supranational Entities Risk. The Fund may be exposed to supranational entities risk through the Fund's investments in derivatives. The Fund may invest in obligations issued or guaranteed by the World Bank. The government members, or "stockholders," usually make initial capital contributions to the World Bank and in many cases are committed to make additional capital contributions if the World Bank is unable to repay its borrowings. There is no guarantee that one or more stockholders of the World Bank will continue to make any necessary additional capital contributions. If such contributions are not made, the entity may be unable to pay interest or repay principal on its debt securities, and the Fund may lose money on such investments. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Foreign Sovereign Debt Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Foreign Sovereign Debt Securities Risk. The Fund may be exposed to foreign sovereign debt securities risk through the Fund's investments in derivatives. The risks that (i) the governmental entity that controls the repayment of sovereign debt may not be willing or able to repay the principal and/or interest when it becomes due, because of factors such as debt service burden, political constraints, cash flow problems and other national economic factors; (ii) governments may default on their debt securities, which may require holders of such securities to participate in debt rescheduling or additional lending to defaulting governments; and (iii) there is no bankruptcy proceeding by which defaulted sovereign debt may be collected in whole or in part. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Event-Driven Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Event-Driven Risk. Event-driven opportunities may not occur as anticipated, resulting in potentially reduced returns or losses to the Fund as it unwinds trades where those opportunities do not materialize as anticipated. |
| SEI DBi Multi-Strategy Alternative ETF | SEI DBi Multi-Strategy Alternative ETF | Directional and Tactical Strategies Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Directional and Tactical Strategies Risk. The risk that the investment decisions made by the Adviser or Sub-Adviser in using this strategy may prove to be incorrect, may not produce the returns expected by the Adviser or Sub-Adviser and may cause the Fund's shares to lose value. |