v3.26.1
Investment Risks
Jun. 25, 2026
VistaShares Target 15 Berkshire Select Income ETF | Berkshire Hathaway Management Change [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Berkshire Hathaway Management Change: The share price of Berkshire Hathaway’s stock (including BRK.B) has been significantly affected by the leadership and public profile of Warren E. Buffett, who has long shaped Berkshire Hathaway’s strategy and image. Mr. Buffett has stepped down as CEO on January 1, 2026, with Greg Abel succeeding him. While the succession plan offers continuity, Mr. Buffett’s continued role as Chairman and any changes in his involvement may impact investor sentiment and lead to increased volatility. The market’s perception of Mr. Abel’s leadership and potential strategic shifts could also introduce uncertainty and materially affect the Fund’s performance.

VistaShares Target 15 Berkshire Select Income ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indexes. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, leverage, imperfect daily correlations with underlying investments or the Fund’s other portfolio holdings, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be imperfect correlation between the return of the Index and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested.

The Fund will be subject to regulatory constraints relating to level of value at risk that the Fund may incur through its derivative portfolio. To the extent the Fund exceeds these regulatory thresholds over an extended period, the Fund may determine that it is necessary to make adjustments to the Fund’s investment strategy, including the desired daily leveraged performance for the Fund.

In addition, the Fund’s investments in derivatives are subject to the following risks:

VistaShares Target 15 Berkshire Select Income ETF | Options [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Options. Purchasing and writing put and call options are highly specialized activities and entail greater than ordinary investment risks. The Fund may not fully benefit from or may lose money on an option if changes in its value do not correspond as anticipated to changes in the value of the underlying securities. If the Fund is not able to sell an option held in its portfolio, it would have to exercise the option to realize any profit and would incur transaction costs upon the purchase or sale of the underlying securities. Ownership of options involves the payment of premiums, which may adversely affect the Fund’s performance.

VistaShares Target 15 Berkshire Select Income ETF | Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Counterparty Risk. Counterparty risk is the likelihood or probability that a party involved in a transaction might default on its contractual obligation. Where the Fund enters into derivative contracts that are exchange-traded, the Fund is subject to the counterparty risk associated with the Fund’s clearing broker or clearinghouse. Relying on a counterparty exposes the Fund to the risk that a counterparty will not settle a transaction in accordance with its terms and conditions because of a dispute over the terms of the contract (whether or not bona fide) or because of a credit or liquidity problem, thus causing the Fund to suffer a loss. If a counterparty defaults on its payment obligations to the Fund, this default will cause the value of an investment in the Fund to decrease. In addition, to the extent the Fund deals with a limited number of counterparties, it will be more susceptible to the credit risks associated with those counterparties.

VistaShares Target 15 Berkshire Select Income ETF | Index / Strategy Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Index / Strategy Risks. The Index’s holdings are derived from publicly available data, which may be delayed relative to the then-current portfolio of Berkshire Hathaway. Consequently, the Fund’s holdings, which are based on the Index, may not accurately reflect Berkshire Hathaway’s most recent publicly-disclosed investment positions and may deviate substantially from its actual current portfolio. The equity securities represented in the Index are subject to a range of risks, including, but not limited to, fluctuations in market conditions, increased competition, and evolving regulatory environments, all of which could adversely affect their performance. Moreover, while the Fund seeks to incorporate aspects of Berkshire Hathaway’s investment philosophy, past

performance of the companies included in the Index does not guarantee future results. There is no assurance that these companies will deliver positive performance or generate long-term capital appreciation.

In addition, the Index includes an approximately 10% allocation to Berkshire Hathaway’s class B shares (BRK.B). Investing in BRK.B through the Fund presents several risks. Fund investors have no direct ownership in Berkshire Hathaway and lack voting rights or influence over corporate decisions, while remaining exposed to fluctuations in BRK.B’s stock price. Public perception and other factors outside of the control of Berkshire Hathaway may additionally impact BRK.B’s stock price due to Berkshire Hathaway garnering a disproportionate degree of public attention, regardless of actual operating performance. Additionally, Berkshire Hathaway’s performance may not meet expectations due to inaccurate projections or unforeseen challenges, and as part of the diversified financial services industry, BRK.B is exposed to broader economic risks, regulatory changes, and market competition.

VistaShares Target 15 Berkshire Select Income ETF | Distribution Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Distribution Risk. Although the Fund has an annual income target, the Fund intends to distribute income on a monthly basis. There is no assurance that the Fund will make a distribution in any given month. If the Fund does make distributions, the amounts of such distributions will likely vary greatly from one distribution to the next. Additionally, monthly distributions, if any, may consist of returns of capital, which would decrease the Fund’s NAV and trading price over time. As a result, an investor may suffer significant losses to their investment.

VistaShares Target 15 Berkshire Select Income ETF | NAV Decline Risk Due to Distributions [Member]  
Prospectus [Line Items]  
Risk [Text Block]

NAV Decline Risk Due to Distributions. When the Fund makes a distribution, the Fund’s NAV will typically drop by the amount of the distribution on the related ex-dividend date. The repeated payment of distributions by the Fund, if any, may result in a decline in the Fund’s NAV and trading price over time. As a result, an investor may suffer losses to their investment.

VistaShares Target 15 Berkshire Select Income ETF | Equity Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Equity Market Risk. Common stocks are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from specific issuers. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests.

VistaShares Target 15 Berkshire Select Income ETF | ETF Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

ETF Risks

VistaShares Target 15 Berkshire Select Income ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as Authorized Participants or APs). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

VistaShares Target 15 Berkshire Select Income ETF | Cash Redemption Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Cash Redemption Risk. An ETF’s investment strategy may require it to redeem its shares for cash or to otherwise include cash as part of its redemption proceeds. For example, an ETF may not be able to redeem in-kind certain securities held by the ETF (e.g., derivative instruments). In such a case, the ETF may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the ETF to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the ETF may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes.

VistaShares Target 15 Berkshire Select Income ETF | Costs of Buying or Selling Shares [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Costs of Buying or Selling Shares. Buying or selling Shares involves certain costs, including brokerage commissions, other charges imposed by brokers, and bid-ask spreads. The bid-ask spread represents the difference between the price at which an investor is willing to buy Shares and the price at which an investor is willing to sell Shares. The spread varies over time based on the Shares’ trading volume and market liquidity. The spread is generally lower if Shares have more trading volume and market liquidity and higher if Shares have little trading volume and market liquidity. Due to the costs of buying or selling Shares, frequent trading of Shares may reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

VistaShares Target 15 Berkshire Select Income ETF | Shares May Trade at Prices Other Than NAV [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

VistaShares Target 15 Berkshire Select Income ETF | Trading [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  Trading. Although Shares are listed for trading on a national securities exchange, such as NYSE Arca, Inc. (the Exchange), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares and the liquidity of the Fund’s portfolio holdings may deteriorate.

VistaShares Target 15 Berkshire Select Income ETF | Focused Portfolio Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Focused Portfolio Risk. The Fund will hold a relatively focused portfolio that may contain securities of fewer issuers than the portfolios of other ETFs. Holding a relatively concentrated portfolio may increase the risk that the value of the Fund could go down because of the poor performance of one or a few investments.

VistaShares Target 15 Berkshire Select Income ETF | High Portfolio Turnover Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

High Portfolio Turnover Risk. The Fund may actively and frequently trade a significant portion of the Fund’s holdings. A high portfolio turnover rate increases transaction costs, which may increase the Fund’s expenses. Frequent trading may also cause adverse tax consequences for investors in the Fund due to an increase in short-term capital gains.

VistaShares Target 15 Berkshire Select Income ETF | Inflation Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be less in the future as inflation decreases the value of money. As inflation increases, the present value of the Fund’s assets and distributions, if any, may decline.

VistaShares Target 15 Berkshire Select Income ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is actively-managed and may not meet its investment objective based on the portfolio managers success or failure in implementing the Fund’s investment strategies.

VistaShares Target 15 Berkshire Select Income ETF | Market Capitalization Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Capitalization Risk.

VistaShares Target 15 Berkshire Select Income ETF | Large-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

 

 

 

Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

VistaShares Target 15 Berkshire Select Income ETF | Mid-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

 

 

 

Mid-Capitalization Investing. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large-capitalization stocks or the stock market as a whole.

VistaShares Target 15 Berkshire Select Income ETF | Market Events Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Events Risk. The Fund’s investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities and other financial instruments. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, inflation, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Fund is subject to the risk that geopolitical events will disrupt securities and other financial markets and adversely affect global economies and markets. Local, regional or global events such as war, military conflicts, acts of terrorism, natural disasters, the spread of infectious illness or other public health issues, or other events could have a significant impact on the Fund and its investments. Continuing uncertainties regarding interest rates, rising inflation, political events, rising government debt in the U.S. and trade tensions also contribute to market volatility. Conflict, loss of life and disaster connected to ongoing armed conflict between Ukraine and Russia in Europe and between Israel and Hamas in the Middle East could have severe adverse effects on the related region, including significant adverse effects on the regional or global economies and the markets for certain securities. The U.S. and the European Union have imposed sanctions on certain Russian individuals and companies, including certain financial institutions, and have limited certain exports and imports to and from Russia. These conflicts have contributed to recent market volatility and may continue to do so.

VistaShares Target 15 Berkshire Select Income ETF | Newer Fund Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Fund Risk. The Fund is a recently organized management investment company with limited operating history. As a result, prospective investors have a limited track record or history on which to base their investment decisions. There can be no assurance that the Fund will maintain an economically viable size.

VistaShares Target 15 Berkshire Select Income ETF | Newer Sub-Adviser Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Sub-Adviser Risk. The Sub-Adviser is newly registered with the SEC and has limited experience with managing an exchange-traded fund regulated under the 1940 Act, which may limit the Sub-Adviser’s effectiveness. As a result, there is no long-term track record against which an investor may judge the Sub-Adviser and it is possible the Sub-Adviser may not achieve the Fund’s intended investment objective.

VistaShares Target 15 Berkshire Select Income ETF | Operational Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Operational Risk. The Fund is subject to risks arising from various operational 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. The Fund relies on third parties for a range of services, including custody. Any delay or

failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, the Adviser, and the Sub-Adviser seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

VistaShares Target 15 Berkshire Select Income ETF | Tax Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Tax Risk. The Fund intends to elect and to qualify each year to be treated as a RIC under Subchapter M of the Code. As a RIC, the Fund will not be subject to U.S. federal income tax on the portion of its net investment income and net capital gain that it distributes to Shareholders, provided that it satisfies certain requirements of the Code. If the Fund does not qualify as a RIC for any taxable year and certain relief provisions are not available, the Fund’s taxable income will be subject to tax at the Fund level and to a further tax at the shareholder level when such income is distributed.

VistaShares Target 15 Berkshire Select Income ETF | U.S. Government and U.S. Agency Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.

VistaShares Target 15 Berkshire Select Income ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund.
VistaShares Target 15 Berkshire Select Income ETF | Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Non-Diversification Risk. Because the Fund is non-diversified, it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.

VistaShares Target 15 USA Momentum Income ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indexes. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, leverage, imperfect daily correlations with underlying investments or the Fund’s other portfolio holdings, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be imperfect correlation between the return of the Index and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested.

The Fund will be subject to regulatory constraints relating to level of value at risk that the Fund may incur through its derivative portfolio. To the extent the Fund exceeds these regulatory thresholds over an extended period, the Fund may determine that it is necessary to make adjustments to the Fund’s investment strategy, including the desired daily leveraged performance for the Fund.

In addition, the Fund’s investments in derivatives are subject to the following risks:

VistaShares Target 15 USA Momentum Income ETF | Options [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Options. Purchasing and writing put and call options are highly specialized activities and entail greater than ordinary investment risks. The Fund may not fully benefit from or may lose money on an option if changes in its value do not correspond as anticipated to changes in the value of the underlying securities. If the Fund is not able to sell an option held in its portfolio, it would have to exercise the option to realize any profit and would incur transaction costs upon the purchase or sale of the underlying securities. Ownership of options involves the payment of premiums, which may adversely affect the Fund’s performance.

VistaShares Target 15 USA Momentum Income ETF | Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Counterparty Risk. Counterparty risk is the likelihood or probability that a party involved in a transaction might default on its contractual obligation. Where the Fund enters into derivative contracts that are exchange-traded, the Fund is subject to the counterparty risk associated with the Fund’s clearing broker or clearinghouse. Relying on a counterparty exposes the Fund to the risk that a counterparty will not settle a transaction in accordance with its terms and conditions because of a dispute over the terms of the contract (whether or not bona fide) or because of a credit or liquidity problem, thus causing the Fund to suffer a loss. If a counterparty defaults on its payment obligations to the Fund, this default will cause the value of an investment in the Fund to decrease. In addition, to the extent the Fund deals with a limited number of counterparties, it will be more susceptible to the credit risks associated with those counterparties.

VistaShares Target 15 USA Momentum Income ETF | Distribution Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Distribution Risk. Although the Fund has an annual income target, the Fund intends to distribute income on a monthly basis. There is no assurance that the Fund will make a distribution in any given month. If the Fund does make distributions, the amounts of such distributions will likely vary greatly from one distribution to the next. Additionally, monthly distributions, if any, may consist of returns of capital, which would decrease the Fund’s NAV and trading price over time. As a result, an investor may suffer significant losses to their investment.

VistaShares Target 15 USA Momentum Income ETF | NAV Decline Risk Due to Distributions [Member]  
Prospectus [Line Items]  
Risk [Text Block]

NAV Decline Risk Due to Distributions. When the Fund makes a distribution, the Fund’s NAV will typically drop by the amount of the distribution on the related ex-dividend date. The repeated payment of distributions by the Fund, if any, may result in a decline in the Fund’s NAV and trading price over time. As a result, an investor may suffer losses to their investment.

VistaShares Target 15 USA Momentum Income ETF | ETF Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

ETF Risks

VistaShares Target 15 USA Momentum Income ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as Authorized Participants or APs). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

VistaShares Target 15 USA Momentum Income ETF | Cash Redemption Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Cash Redemption Risk. An ETF’s investment strategy may require it to redeem its shares for cash or to otherwise include cash as part of its redemption proceeds. For example, an ETF may not be able to redeem in-kind certain securities held by the ETF (e.g., derivative instruments). In such a case, the ETF may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the ETF to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the ETF may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes.

VistaShares Target 15 USA Momentum Income ETF | Costs of Buying or Selling Shares [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Costs of Buying or Selling Shares. Buying or selling Shares involves certain costs, including brokerage commissions, other charges imposed by brokers, and bid-ask spreads. The bid-ask spread represents the difference between the price at which an investor is willing to buy Shares and the price at which an investor is willing to sell Shares. The spread varies over time based on the Shares’ trading volume and market liquidity. The spread is generally lower if Shares have more trading volume and market liquidity and higher if Shares have little trading volume and market liquidity. Due to the costs of buying or selling Shares, frequent trading of Shares may reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

VistaShares Target 15 USA Momentum Income ETF | Shares May Trade at Prices Other Than NAV [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

VistaShares Target 15 USA Momentum Income ETF | Trading [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  Trading. Although Shares are listed for trading on a national securities exchange, such as NYSE Arca, Inc. (the Exchange), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares and the liquidity of the Fund’s portfolio holdings may deteriorate.

VistaShares Target 15 USA Momentum Income ETF | Focused Portfolio Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Focused Portfolio Risk. The Fund will hold a relatively focused portfolio that may contain securities of fewer issuers than the portfolios of other ETFs. Holding a relatively concentrated portfolio may increase the risk that the value of the Fund could go down because of the poor performance of one or a few investments.

VistaShares Target 15 USA Momentum Income ETF | High Portfolio Turnover Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

High Portfolio Turnover Risk. The Fund may actively and frequently trade a significant portion of the Fund’s holdings. A high portfolio turnover rate increases transaction costs, which may increase the Fund’s expenses. Frequent trading may also cause adverse tax consequences for investors in the Fund due to an increase in short-term capital gains.

VistaShares Target 15 USA Momentum Income ETF | Inflation Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be less in the future as inflation decreases the value of money. As inflation increases, the present value of the Fund’s assets and distributions, if any, may decline.

VistaShares Target 15 USA Momentum Income ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is actively-managed and may not meet its investment objective based on the portfolio managers success or failure in implementing the Fund’s investment strategies.

VistaShares Target 15 USA Momentum Income ETF | Market Capitalization Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Capitalization Risk.

VistaShares Target 15 USA Momentum Income ETF | Large-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

 

 

 

Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

VistaShares Target 15 USA Momentum Income ETF | Mid-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

 

 

 

Mid-Capitalization Investing. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large-capitalization stocks or the stock market as a whole.

VistaShares Target 15 USA Momentum Income ETF | Market Events Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Events Risk. The Fund’s investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities and other financial instruments. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, inflation, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Fund is subject to the risk that geopolitical events will disrupt securities and other financial markets and adversely affect global economies and markets. Local, regional or global events such as war, military conflicts, acts of terrorism, natural disasters, the spread of infectious illness or other public health issues, or other events could have a significant impact on the Fund and its investments. Continuing uncertainties regarding interest rates, rising inflation, political events, rising government debt in the U.S. and trade tensions also contribute to market volatility. Conflict, loss of life and disaster connected to ongoing armed conflict between Ukraine and Russia in Europe and between Israel and Hamas in the Middle East could have severe adverse effects on the related region, including significant adverse effects on the regional or global economies and the markets for certain securities. The U.S. and the European Union have imposed sanctions on certain Russian individuals and companies, including certain financial institutions, and have limited certain exports and imports to and from Russia. These conflicts have contributed to recent market volatility and may continue to do so.

VistaShares Target 15 USA Momentum Income ETF | Newer Sub-Adviser Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Sub-Adviser Risk. The Sub-Adviser is newly registered with the SEC and has limited experience with managing an exchange-traded fund regulated under the 1940 Act, which may limit the Sub-Adviser’s effectiveness. As a result, there is no long-term track record against which an investor may judge the Sub-Adviser and it is possible the Sub-Adviser may not achieve the Fund’s intended investment objective.

VistaShares Target 15 USA Momentum Income ETF | Operational Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Operational Risk. The Fund is subject to risks arising from various operational 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. The Fund relies on third parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, the Adviser, and the Sub-Adviser seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

VistaShares Target 15 USA Momentum Income ETF | Tax Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Tax Risk. The Fund intends to elect and to qualify each year to be treated as a RIC under Subchapter M of the Code. As a RIC, the Fund will not be subject to U.S. federal income tax on the portion of its net investment income and net capital gain that it distributes to Shareholders, provided that it satisfies certain requirements of the Code. If the Fund does not qualify as a RIC for any taxable year and certain relief provisions are not available, the Fund’s taxable income will be subject to tax at the Fund level and to a further tax at the shareholder level when such income is distributed.

VistaShares Target 15 USA Momentum Income ETF | U.S. Government and U.S. Agency Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.

VistaShares Target 15 USA Momentum Income ETF | Momentum Investing Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Momentum Investing Risk. Securities that have previously exhibited price momentum may be more volatile than a broad cross-section of securities and their returns may be less than the returns of the overall stock market or other styles of investing. High momentum may also be a sign that the securities’ prices have peaked. Momentum can turn quickly and cause significant variation from other types of investments. The Fund may experience significant losses if momentum stops, turns or otherwise behaves differently than predicted.

VistaShares Target 15 USA Momentum Income ETF | New Fund Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

New Fund Risk. The Fund is a recently organized management investment company with limited operating history. As a result, prospective investors do not have a track record or history on which to base their investment decisions.

VistaShares Target 15 USA Momentum Income ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund.
VistaShares Target 15 USA Momentum Income ETF | Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Non-Diversification Risk. Because the Fund is non-diversified, it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.

VistaShares Target 15 USA Value Income ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indexes. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, leverage, imperfect daily correlations with underlying investments or the Fund’s other portfolio holdings, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be imperfect correlation between the return of the Index and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested.

The Fund will be subject to regulatory constraints relating to level of value at risk that the Fund may incur through its derivative portfolio. To the extent the Fund exceeds these regulatory thresholds over an extended period, the Fund may determine that it is necessary to make adjustments to the Fund’s investment strategy, including the desired daily leveraged performance for the Fund.

In addition, the Fund’s investments in derivatives are subject to the following risks:

VistaShares Target 15 USA Value Income ETF | Options [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Options. Purchasing and writing put and call options are highly specialized activities and entail greater than ordinary investment risks. The Fund may not fully benefit from or may lose money on an option if changes in its value do not correspond as anticipated to changes in the value of the underlying securities. If the Fund is not able to sell an option held in its portfolio, it would have to exercise the option to realize any profit and would incur transaction costs upon the purchase or sale of the underlying securities. Ownership of options involves the payment of premiums, which may adversely affect the Fund’s performance.

VistaShares Target 15 USA Value Income ETF | Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Counterparty Risk. Counterparty risk is the likelihood or probability that a party involved in a transaction might default on its contractual obligation. Where the Fund enters into derivative contracts that are exchange-traded, the Fund is subject to the counterparty risk associated with the Fund’s clearing broker or clearinghouse. Relying on a counterparty exposes the Fund to the risk that a counterparty will not settle a transaction in accordance with its terms and conditions because of a dispute over the terms of the contract (whether or not bona fide) or because of a credit or liquidity problem, thus causing the Fund to suffer a loss. If a counterparty defaults on its payment obligations to the Fund, this default will cause the value of an investment in the Fund to decrease. In addition, to the extent the Fund deals with a limited number of counterparties, it will be more susceptible to the credit risks associated with those counterparties.

VistaShares Target 15 USA Value Income ETF | Distribution Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Distribution Risk. Although the Fund has an annual income target, the Fund intends to distribute income on a monthly basis. There is no assurance that the Fund will make a distribution in any given month. If the Fund does make distributions, the amounts of such distributions will likely vary greatly from one distribution to the next. Additionally, monthly distributions, if any, may consist of

returns of capital, which would decrease the Fund’s NAV and trading price over time. As a result, an investor may suffer significant losses to their investment.

VistaShares Target 15 USA Value Income ETF | NAV Decline Risk Due to Distributions [Member]  
Prospectus [Line Items]  
Risk [Text Block]

NAV Decline Risk Due to Distributions. When the Fund makes a distribution, the Fund’s NAV will typically drop by the amount of the distribution on the related ex-dividend date. The repeated payment of distributions by the Fund, if any, may result in a decline in the Fund’s NAV and trading price over time. As a result, an investor may suffer losses to their investment.

VistaShares Target 15 USA Value Income ETF | Equity Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Equity Market Risk. Common stocks are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from specific issuers. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests.

VistaShares Target 15 USA Value Income ETF | ETF Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

ETF Risks

VistaShares Target 15 USA Value Income ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as Authorized Participants or APs). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

VistaShares Target 15 USA Value Income ETF | Cash Redemption Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Cash Redemption Risk. An ETF’s investment strategy may require it to redeem its shares for cash or to otherwise include cash as part of its redemption proceeds. For example, an ETF may not be able to redeem in-kind certain securities held by the ETF (e.g., derivative instruments). In such a case, the ETF may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the ETF to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the ETF may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes.

VistaShares Target 15 USA Value Income ETF | Costs of Buying or Selling Shares [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Costs of Buying or Selling Shares. Buying or selling Shares involves certain costs, including brokerage commissions, other charges imposed by brokers, and bid-ask spreads. The bid-ask spread represents the difference between the price at which an investor is willing to buy Shares and the price at which an investor is willing to sell Shares. The spread varies over time based on the Shares’ trading volume and market liquidity. The spread is generally lower if Shares have more trading volume and market liquidity and higher if Shares have little trading volume and market liquidity. Due to the costs of buying or selling Shares, frequent trading of Shares may reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

VistaShares Target 15 USA Value Income ETF | Shares May Trade at Prices Other Than NAV [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

VistaShares Target 15 USA Value Income ETF | Trading [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  Trading. Although Shares are listed for trading on a national securities exchange, such as NYSE Arca, Inc. (the Exchange), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares and the liquidity of the Fund’s portfolio holdings may deteriorate.

VistaShares Target 15 USA Value Income ETF | Focused Portfolio Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Focused Portfolio Risk. The Fund will hold a relatively focused portfolio that may contain securities of fewer issuers than the portfolios of other ETFs. Holding a relatively concentrated portfolio may increase the risk that the value of the Fund could go down because of the poor performance of one or a few investments.

VistaShares Target 15 USA Value Income ETF | High Portfolio Turnover Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

High Portfolio Turnover Risk. The Fund may actively and frequently trade a significant portion of the Fund’s holdings. A high portfolio turnover rate increases transaction costs, which may increase the Fund’s expenses. Frequent trading may also cause adverse tax consequences for investors in the Fund due to an increase in short-term capital gains.

VistaShares Target 15 USA Value Income ETF | Inflation Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be less in the future as inflation decreases the value of money. As inflation increases, the present value of the Fund’s assets and distributions, if any, may decline.

VistaShares Target 15 USA Value Income ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is actively-managed and may not meet its investment objective based on the portfolio managers success or failure in implementing the Fund’s investment strategies.

VistaShares Target 15 USA Value Income ETF | Market Capitalization Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Capitalization Risk.

VistaShares Target 15 USA Value Income ETF | Large-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

 

 

 

Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

VistaShares Target 15 USA Value Income ETF | Mid-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

 

 

 

Mid-Capitalization Investing. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large-capitalization stocks or the stock market as a whole.

VistaShares Target 15 USA Value Income ETF | Market Events Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Events Risk. The Fund’s investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities and other financial instruments. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, inflation, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Fund is subject to the risk that geopolitical events will disrupt securities and other financial markets and adversely affect global economies and markets. Local, regional or global events such as war, military conflicts, acts of terrorism, natural disasters, the spread of infectious illness or other public health issues, or other events could have a significant impact on the Fund and its investments. Continuing uncertainties regarding interest rates, rising inflation, political events, rising government debt in the U.S. and trade tensions also contribute to market volatility. Conflict, loss of life and disaster connected to ongoing armed conflict between Ukraine and Russia in Europe and between Israel and Hamas in the Middle East could have severe adverse effects on the related region, including significant adverse effects on the regional or global economies and the markets for certain securities. The U.S. and the European Union have imposed sanctions on certain Russian individuals and companies, including certain financial institutions, and have limited certain exports and imports to and from Russia. These conflicts have contributed to recent market volatility and may continue to do so.

VistaShares Target 15 USA Value Income ETF | Newer Sub-Adviser Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Sub-Adviser Risk. The Sub-Adviser is newly registered with the SEC and has limited experience with managing an exchange-traded fund regulated under the 1940 Act, which may limit the Sub-Adviser’s effectiveness. As a result, there is no long-term track record against which an investor may judge the Sub-Adviser and it is possible the Sub-Adviser may not achieve the Fund’s intended investment objective.

VistaShares Target 15 USA Value Income ETF | Operational Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Operational Risk. The Fund is subject to risks arising from various operational 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. The Fund relies on third parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, the Adviser, and the Sub-Adviser seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

VistaShares Target 15 USA Value Income ETF | Tax Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Tax Risk. The Fund intends to elect and to qualify each year to be treated as a RIC under Subchapter M of the Code. As a RIC, the Fund will not be subject to U.S. federal income tax on the portion of its net investment income and net capital gain that it distributes to Shareholders, provided that it satisfies certain requirements of the Code. If the Fund does not qualify as a RIC for any taxable year and certain relief provisions are not available, the Fund’s taxable income will be subject to tax at the Fund level and to a further tax at the shareholder level when such income is distributed.

VistaShares Target 15 USA Value Income ETF | U.S. Government and U.S. Agency Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no

assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.

VistaShares Target 15 USA Value Income ETF | New Fund Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

New Fund Risk. The Fund is a recently organized management investment company with limited operating history. As a result, prospective investors do not have a track record or history on which to base their investment decisions.

VistaShares Target 15 USA Value Income ETF | Value Investing Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Value Investing Risk. Investing in or having exposure to “value” securities presents the risk that the securities may never reach what the Sub-Adviser believes are their full market values, either because the market fails to recognize what the Sub-Adviser considers to be the security’s true value or because the Sub-Adviser misjudged that value. In addition, there may be periods during which the investment performance of the Fund while using a value strategy may suffer.

VistaShares Target 15 USA Value Income ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund.
VistaShares Target 15 USA Value Income ETF | Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Non-Diversification Risk. Because the Fund is non-diversified, it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.

VistaShares Target 15 USA Quality Income ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indexes. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, leverage, imperfect daily correlations with underlying investments or the Fund’s other portfolio holdings, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be imperfect correlation between the return of the Index and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested.

The Fund will be subject to regulatory constraints relating to level of value at risk that the Fund may incur through its derivative portfolio. To the extent the Fund exceeds these regulatory thresholds over an extended period, the Fund may determine that it is necessary to make adjustments to the Fund’s investment strategy, including the desired daily leveraged performance for the Fund.

In addition, the Fund’s investments in derivatives are subject to the following risks:

VistaShares Target 15 USA Quality Income ETF | Options [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Options. Purchasing and writing put and call options are highly specialized activities and entail greater than ordinary investment risks. The Fund may not fully benefit from or may lose money on an option if changes in its value do not correspond as anticipated to changes in the value of the underlying securities. If the Fund is not able to sell an option held in its portfolio, it would have to exercise the option to realize any profit and would incur transaction costs upon the purchase or sale of the underlying securities. Ownership of options involves the payment of premiums, which may adversely affect the Fund’s performance.

VistaShares Target 15 USA Quality Income ETF | Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Counterparty Risk. Counterparty risk is the likelihood or probability that a party involved in a transaction might default on its contractual obligation. Where the Fund enters into derivative contracts that are exchange-traded, the Fund is subject to the counterparty risk associated with the Fund’s clearing broker or clearinghouse. Relying on a counterparty exposes the Fund to the risk that a counterparty will not settle a transaction in accordance with its terms and conditions because of a dispute over the terms of the contract (whether or not bona fide) or because of a credit or liquidity problem, thus causing the Fund to suffer a loss. If a counterparty defaults on its payment obligations to the Fund, this default will cause the value of an investment in the Fund to decrease. In addition, to the extent the Fund deals with a limited number of counterparties, it will be more susceptible to the credit risks associated with those counterparties.

VistaShares Target 15 USA Quality Income ETF | Distribution Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Distribution Risk. Although the Fund has an annual income target, the Fund intends to distribute income on a monthly basis. There is no assurance that the Fund will make a distribution in any given month. If the Fund does make distributions, the amounts of such distributions will likely vary greatly from one distribution to the next. Additionally, monthly distributions, if any, may consist of returns of capital, which would decrease the Fund’s NAV and trading price over time. As a result, an investor may suffer significant losses to their investment.

VistaShares Target 15 USA Quality Income ETF | NAV Decline Risk Due to Distributions [Member]  
Prospectus [Line Items]  
Risk [Text Block]

NAV Decline Risk Due to Distributions. When the Fund makes a distribution, the Fund’s NAV will typically drop by the amount of the distribution on the related ex-dividend date. The repeated payment of distributions by the Fund, if any, may result in a decline in the Fund’s NAV and trading price over time. As a result, an investor may suffer losses to their investment.

VistaShares Target 15 USA Quality Income ETF | Equity Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Equity Market Risk. Common stocks are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from specific issuers. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests.

VistaShares Target 15 USA Quality Income ETF | ETF Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

ETF Risks

VistaShares Target 15 USA Quality Income ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as Authorized Participants or APs). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

VistaShares Target 15 USA Quality Income ETF | Cash Redemption Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Cash Redemption Risk. An ETF’s investment strategy may require it to redeem its shares for cash or to otherwise include cash as part of its redemption proceeds. For example, an ETF may not be able to redeem in-kind certain securities held by the ETF (e.g., derivative instruments). In such a case, the ETF may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the ETF to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the ETF may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes.

VistaShares Target 15 USA Quality Income ETF | Costs of Buying or Selling Shares [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Costs of Buying or Selling Shares. Buying or selling Shares involves certain costs, including brokerage commissions, other charges imposed by brokers, and bid-ask spreads. The bid-ask spread represents the difference between the price at which an investor is willing to buy Shares and the price at which an investor is willing to sell Shares. The spread varies over time based on the Shares’ trading volume and market liquidity. The spread is generally lower if Shares have more trading volume and market liquidity and higher if Shares have little trading volume and market liquidity. Due to the costs of buying or selling Shares, frequent trading of Shares may reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

VistaShares Target 15 USA Quality Income ETF | Shares May Trade at Prices Other Than NAV [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

VistaShares Target 15 USA Quality Income ETF | Trading [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  Trading. Although Shares are listed for trading on a national securities exchange, such as NYSE Arca, Inc. (the Exchange), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares and the liquidity of the Fund’s portfolio holdings may deteriorate.

VistaShares Target 15 USA Quality Income ETF | Focused Portfolio Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Focused Portfolio Risk. The Fund will hold a relatively focused portfolio that may contain securities of fewer issuers than the portfolios of other ETFs. Holding a relatively concentrated portfolio may increase the risk that the value of the Fund could go down because of the poor performance of one or a few investments.

VistaShares Target 15 USA Quality Income ETF | High Portfolio Turnover Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

High Portfolio Turnover Risk. The Fund may actively and frequently trade a significant portion of the Fund’s holdings. A high portfolio turnover rate increases transaction costs, which may increase the Fund’s expenses. Frequent trading may also cause adverse tax consequences for investors in the Fund due to an increase in short-term capital gains.

VistaShares Target 15 USA Quality Income ETF | Inflation Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be less in the future as inflation decreases the value of money. As inflation increases, the present value of the Fund’s assets and distributions, if any, may decline.

VistaShares Target 15 USA Quality Income ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is actively-managed and may not meet its investment objective based on the portfolio managers success or failure in implementing the Fund’s investment strategies.

VistaShares Target 15 USA Quality Income ETF | Market Capitalization Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Capitalization Risk.

VistaShares Target 15 USA Quality Income ETF | Large-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

 

 

 

Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

VistaShares Target 15 USA Quality Income ETF | Mid-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

 

 

 

Mid-Capitalization Investing. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large-capitalization stocks or the stock market as a whole.

VistaShares Target 15 USA Quality Income ETF | Market Events Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Events Risk. The Fund’s investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities and other financial instruments. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, inflation, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Fund is subject to the risk that geopolitical events will disrupt securities and other financial markets and adversely affect global economies and markets. Local, regional or global events such as war, military conflicts, acts of terrorism, natural disasters, the spread of infectious illness or other public health issues, or other events could have a significant impact on the Fund and its investments. Continuing uncertainties regarding interest rates, rising inflation, political events, rising government debt in the U.S. and trade tensions also contribute to market volatility. Conflict, loss of life and disaster connected to ongoing armed conflict between Ukraine and Russia in Europe and between Israel and Hamas in the Middle East could have severe adverse effects on the related region, including significant adverse effects on the regional or global economies and the markets for certain securities. The U.S. and the European Union have imposed sanctions on certain Russian individuals and companies, including certain financial institutions, and have limited certain exports and imports to and from Russia. These conflicts have contributed to recent market volatility and may continue to do so.

VistaShares Target 15 USA Quality Income ETF | Newer Fund Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Fund Risk. The Fund is a recently organized management investment company with limited operating history. As a result, prospective investors have a limited track record or history on which to base their investment decisions. There can be no assurance that the Fund will maintain an economically viable size.

VistaShares Target 15 USA Quality Income ETF | Newer Sub-Adviser Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Sub-Adviser Risk. The Sub-Adviser is newly registered with the SEC and has limited experience with managing an exchange-traded fund regulated under the 1940 Act, which may limit the Sub-Adviser’s effectiveness. As a result, there is no long-term track record against which an investor may judge the Sub-Adviser and it is possible the Sub-Adviser may not achieve the Fund’s intended investment objective.

VistaShares Target 15 USA Quality Income ETF | Operational Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Operational Risk. The Fund is subject to risks arising from various operational 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. The Fund relies on third parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, the Adviser, and the Sub-Adviser seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

VistaShares Target 15 USA Quality Income ETF | Tax Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Tax Risk. The Fund intends to elect and to qualify each year to be treated as a RIC under Subchapter M of the Code. As a RIC, the Fund will not be subject to U.S. federal income tax on the portion of its net investment income and net capital gain that it distributes to Shareholders, provided that it satisfies certain requirements of the Code. If the Fund does not qualify as a RIC for any taxable year and certain relief provisions are not available, the Fund’s taxable income will be subject to tax at the Fund level and to a further tax at the shareholder level when such income is distributed.

VistaShares Target 15 USA Quality Income ETF | U.S. Government and U.S. Agency Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.

VistaShares Target 15 USA Quality Income ETF | Quality Style Investing Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Quality Style Investing Risks. Securities included in the Fund’s Equity Strategy are deemed by VistaShares to be quality stocks, but there is no guarantee that the past performance of these stocks will continue. Companies that issue these stocks may experience a decline in value, 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.

VistaShares Target 15 USA Quality Income ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund.
VistaShares Target 15 USA Quality Income ETF | Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Non-Diversification Risk. Because the Fund is non-diversified, it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.

VistaShares Target 15 USA Low Volatility Income ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Derivatives Risk. Derivatives are financial instruments that derive value from the underlying reference asset or assets, such as stocks, bonds, or funds (including ETFs), interest rates or indexes. The Fund’s investments in derivatives may pose risks in addition to, and greater than, those associated with directly investing in securities or other ordinary investments, including risk related to the market, leverage, imperfect daily correlations with underlying investments or the Fund’s other portfolio holdings, higher price volatility, lack of availability, counterparty risk, liquidity, valuation and legal restrictions. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. The use of derivatives may result in larger losses or smaller gains than directly investing in securities. When the Fund uses derivatives, there may be imperfect correlation between the return of the Index and the derivative, which may prevent the Fund from achieving its investment objective. Because derivatives often require only a limited initial investment, the use of derivatives may expose the Fund to losses in excess of those amounts initially invested.

The Fund will be subject to regulatory constraints relating to level of value at risk that the Fund may incur through its derivative portfolio. To the extent the Fund exceeds these regulatory thresholds over an extended period, the Fund may determine that it is necessary to make adjustments to the Fund’s investment strategy, including the desired daily leveraged performance for the Fund.

In addition, the Fund’s investments in derivatives are subject to the following risks:

VistaShares Target 15 USA Low Volatility Income ETF | Options [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Options. Purchasing and writing put and call options are highly specialized activities and entail greater than ordinary investment risks. The Fund may not fully benefit from or may lose money on an option if changes in its value do not correspond as anticipated to changes in the value of the underlying securities. If the Fund is not able to sell an option held in its portfolio, it would have to exercise the option to realize any profit and would incur transaction costs upon the purchase or sale of the underlying securities. Ownership of options involves the payment of premiums, which may adversely affect the Fund’s performance.

VistaShares Target 15 USA Low Volatility Income ETF | Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Counterparty Risk. Counterparty risk is the likelihood or probability that a party involved in a transaction might default on its contractual obligation. Where the Fund enters into derivative contracts that are exchange-traded, the Fund is subject to the counterparty risk associated with the Fund’s clearing broker or clearinghouse. Relying on a counterparty exposes the Fund to the risk that a counterparty will not settle a transaction in accordance with its terms and conditions because of a dispute over the terms of the contract (whether or not bona fide) or because of a credit or liquidity problem, thus causing the Fund to suffer a loss. If a counterparty defaults on its payment obligations to the Fund, this default will cause the value of an investment in the Fund to decrease. In addition, to the extent the Fund deals with a limited number of counterparties, it will be more susceptible to the credit risks associated with those counterparties.

VistaShares Target 15 USA Low Volatility Income ETF | Distribution Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Distribution Risk. Although the Fund has an annual income target, the Fund intends to distribute income on a monthly basis. There is no assurance that the Fund will make a distribution in any given month. If the Fund does make distributions, the amounts of such distributions will likely vary greatly from one distribution to the next. Additionally, monthly distributions, if any, may consist of returns of capital, which would decrease the Fund’s NAV and trading price over time. As a result, an investor may suffer significant losses to their investment.

VistaShares Target 15 USA Low Volatility Income ETF | NAV Decline Risk Due to Distributions [Member]  
Prospectus [Line Items]  
Risk [Text Block]

NAV Decline Risk Due to Distributions. When the Fund makes a distribution, the Fund’s NAV will typically drop by the amount of the distribution on the related ex-dividend date. The repeated payment of distributions by the Fund, if any, may result in a decline in the Fund’s NAV and trading price over time. As a result, an investor may suffer losses to their investment.

VistaShares Target 15 USA Low Volatility Income ETF | Equity Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Equity Market Risk. Common stocks are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from specific issuers. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests.

VistaShares Target 15 USA Low Volatility Income ETF | ETF Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

ETF Risks

VistaShares Target 15 USA Low Volatility Income ETF | Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that are authorized to purchase and redeem Shares directly from the Fund (known as Authorized Participants or APs). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services; or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

VistaShares Target 15 USA Low Volatility Income ETF | Cash Redemption Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Cash Redemption Risk. An ETF’s investment strategy may require it to redeem its shares for cash or to otherwise include cash as part of its redemption proceeds. For example, an ETF may not be able to redeem in-kind certain securities held by the ETF (e.g., derivative instruments). In such a case, the ETF may be required to sell or unwind portfolio investments to obtain the cash needed to distribute redemption proceeds. This may cause the ETF to recognize a capital gain that it might not have recognized if it had made a redemption in-kind. As a result, the ETF may pay out higher annual capital gain distributions than if the in-kind redemption process was used. By paying out higher annual capital gain distributions, investors may be subjected to increased capital gains taxes.

VistaShares Target 15 USA Low Volatility Income ETF | Costs of Buying or Selling Shares [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Costs of Buying or Selling Shares. Buying or selling Shares involves certain costs, including brokerage commissions, other charges imposed by brokers, and bid-ask spreads. The bid-ask spread represents the difference between the price at which an investor is willing to buy Shares and the price at which an investor is willing to sell Shares. The spread varies over time based on the Shares’ trading volume and market liquidity. The spread is generally lower if Shares have more trading volume and market liquidity and higher if Shares have little trading volume and market liquidity. Due to the costs of buying or selling Shares, frequent trading of Shares may reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

VistaShares Target 15 USA Low Volatility Income ETF | Shares May Trade at Prices Other Than NAV [Member]  
Prospectus [Line Items]  
Risk [Text Block]

●   Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

VistaShares Target 15 USA Low Volatility Income ETF | Trading [Member]  
Prospectus [Line Items]  
Risk [Text Block]

  Trading. Although Shares are listed for trading on a national securities exchange, such as NYSE Arca, Inc. (the Exchange), and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares and the liquidity of the Fund’s portfolio holdings may deteriorate.

VistaShares Target 15 USA Low Volatility Income ETF | Focused Portfolio Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Focused Portfolio Risk. The Fund will hold a relatively focused portfolio that may contain securities of fewer issuers than the portfolios of other ETFs. Holding a relatively concentrated portfolio may increase the risk that the value of the Fund could go down because of the poor performance of one or a few investments.

VistaShares Target 15 USA Low Volatility Income ETF | High Portfolio Turnover Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

High Portfolio Turnover Risk. The Fund may actively and frequently trade a significant portion of the Fund’s holdings. A high portfolio turnover rate increases transaction costs, which may increase the Fund’s expenses. Frequent trading may also cause adverse tax consequences for investors in the Fund due to an increase in short-term capital gains.

VistaShares Target 15 USA Low Volatility Income ETF | Inflation Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Inflation Risk. Inflation risk is the risk that the value of assets or income from investments will be less in the future as inflation decreases the value of money. As inflation increases, the present value of the Fund’s assets and distributions, if any, may decline.

VistaShares Target 15 USA Low Volatility Income ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Management Risk. The Fund is actively-managed and may not meet its investment objective based on the portfolio managers success or failure in implementing the Fund’s investment strategies.

VistaShares Target 15 USA Low Volatility Income ETF | Market Capitalization Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Capitalization Risk.

VistaShares Target 15 USA Low Volatility Income ETF | Large-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

 

 

 

Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

VistaShares Target 15 USA Low Volatility Income ETF | Mid-Capitalization Investing [Member]  
Prospectus [Line Items]  
Risk [Text Block]

 

 

 

 

Mid-Capitalization Investing. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large-capitalization stocks or the stock market as a whole.

VistaShares Target 15 USA Low Volatility Income ETF | Market Events Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Market Events Risk. The Fund’s investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities and other financial instruments. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, inflation, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Fund is subject to the risk that geopolitical events will disrupt securities and other financial markets and adversely affect global economies and markets. Local, regional or global events such as war, military conflicts, acts of terrorism, natural disasters, the spread of infectious illness or other public health issues, or other events could have a significant impact on the Fund and its investments. Continuing uncertainties regarding interest rates, rising inflation, political events, rising government debt in the U.S. and trade tensions also contribute to market volatility. Conflict, loss of life and disaster connected to ongoing armed conflict between Ukraine and Russia in Europe and between Israel and Hamas in the Middle East could have severe adverse effects on the related region, including significant adverse effects on the regional or global economies and the markets for certain securities. The U.S. and the European Union have imposed sanctions on certain Russian individuals and companies, including certain financial institutions, and have limited certain exports and imports to and from Russia. These conflicts have contributed to recent market volatility and may continue to do so.

VistaShares Target 15 USA Low Volatility Income ETF | Newer Sub-Adviser Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Newer Sub-Adviser Risk. The Sub-Adviser is newly registered with the SEC and has limited experience with managing an exchange-traded fund regulated under the 1940 Act, which may limit the Sub-Adviser’s effectiveness. As a result, there is no long-term track record against which an investor may judge the Sub-Adviser and it is possible the Sub-Adviser may not achieve the Fund’s intended investment objective.

VistaShares Target 15 USA Low Volatility Income ETF | Operational Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Operational Risk. The Fund is subject to risks arising from various operational 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. The Fund relies on third parties for a range of services, including custody. Any delay or failure relating to engaging or maintaining such service providers may affect the Fund’s ability to meet its investment objective. Although the Fund, the Adviser, and the Sub-Adviser seek to reduce these operational risks through controls and procedures, there is no way to completely protect against such risks.

VistaShares Target 15 USA Low Volatility Income ETF | Tax Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Tax Risk. The Fund intends to elect and to qualify each year to be treated as a RIC under Subchapter M of the Code. As a RIC, the Fund will not be subject to U.S. federal income tax on the portion of its net investment income and net capital gain that it distributes to Shareholders, provided that it satisfies certain requirements of the Code. If the Fund does not qualify as a RIC for any taxable year and certain relief provisions are not available, the Fund’s taxable income will be subject to tax at the Fund level and to a further tax at the shareholder level when such income is distributed.

VistaShares Target 15 USA Low Volatility Income ETF | U.S. Government and U.S. Agency Obligations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

U.S. Government and U.S. Agency Obligations Risk. The Fund may invest in securities issued by the U.S. government or its agencies or instrumentalities. U.S. Government obligations include securities issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities, such as the U.S. Treasury. Payment of principal and interest on U.S. Government obligations may be backed by the full faith and credit of the United States or may be backed solely by the issuing or guaranteeing agency or instrumentality itself. In the latter case, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment, which agency or instrumentality may be privately owned. There can be no assurance that the U.S. Government would provide financial support to its agencies or instrumentalities (including government-sponsored enterprises) where it is not obligated to do so.

VistaShares Target 15 USA Low Volatility Income ETF | New Fund Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]

New Fund Risk. The Fund is a recently organized management investment company with limited operating history. As a result, prospective investors do not have a track record or history on which to base their investment decisions.

VistaShares Target 15 USA Low Volatility Income ETF | Low Volatility Investing Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Low Volatility Investing Risks. Securities included in the Fund’s Equity Strategy are selected based on low volatility metrics, yet there is no assurance that these stocks will maintain stable performance or meet anticipated return objectives. A low volatility strategy may lead the Fund to underperform during periods of strong market growth, as low-volatility stocks often lag behind higher-growth or more volatile stocks in rising markets. Additionally, low volatility does not eliminate the risk of losses; these stocks may still experience significant declines in value due to adverse market conditions, economic downturns, or unforeseen company-specific events. Moreover, low volatility stocks can become overvalued in prolonged periods of investor preference for stable returns, potentially resulting in sharp price declines if market sentiment shifts. Consequently, relying on low volatility characteristics may not protect the Fund from losses or provide the intended level of risk-adjusted returns.

VistaShares Target 15 USA Low Volatility Income ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The Fund may not achieve its investment objective and there is a risk that you could lose all of your money invested in the Fund.
VistaShares Target 15 USA Low Volatility Income ETF | Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block]

Non-Diversification Risk. Because the Fund is non-diversified, it may invest a greater percentage of its assets in the securities of a single issuer or a smaller number of issuers than if it was a diversified fund. As a result, a decline in the value of an investment in a single issuer or a smaller number of issuers could cause the Fund’s overall value to decline to a greater degree than if the Fund held a more diversified portfolio.