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        <measure>pure</measure>
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    <unit id="usd">
        <measure>iso4217:USD</measure>
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    <dei:EntityCentralIndexKey contextRef="c-1" id="f-7">0001540305</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag contextRef="c-1" id="f-8">false</dei:AmendmentFlag>
    <oef:AnnlRtrPct contextRef="c-3" decimals="4" id="f-9" unitRef="number">0.2975</oef:AnnlRtrPct>
    <oef:AnnlRtrPct contextRef="c-4" decimals="4" id="f-10" unitRef="number">-0.0706</oef:AnnlRtrPct>
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    <oef:ExpenseExampleNarrativeTextBlock contextRef="c-11" id="f-105">This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then continue to hold or redeem all of your Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same.</oef:ExpenseExampleNarrativeTextBlock>
    <dei:DocumentPeriodEndDate contextRef="c-1" id="f-1">2026-06-24</dei:DocumentPeriodEndDate>
    <dei:EntityInvCompanyType contextRef="c-1" id="f-2">N-1A</dei:EntityInvCompanyType>
    <dei:EntityRegistrantName contextRef="c-1" id="f-3">ETF SERIES SOLUTIONS</dei:EntityRegistrantName>
    <oef:RiskReturnHeading contextRef="c-2" id="f-4">U.S. Diversified Real Estate ETF</oef:RiskReturnHeading>
    <oef:ProspectusDate contextRef="c-1" id="f-5">2026-06-30</oef:ProspectusDate>
    <oef:ObjectiveHeading contextRef="c-2" id="f-16">Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock contextRef="c-2" id="f-17">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The U.S. Diversified Real Estate ETF (the &#x201c;Fund&#x201d;) seeks to track the performance, before fees and expenses, of the USREX &#x2013; U.S. Diversified Real Estate Index&#x2122; (the &#x201c;Index&#x201d;).&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading contextRef="c-2" id="f-18">Fees and Expenses of the Fund</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock contextRef="c-2" id="f-19">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund (&#x201c;Shares&#x201d;). &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and Example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption contextRef="c-2" id="f-20">Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets contextRef="c-10" decimals="4" id="f-21" unitRef="number">0.0053</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets contextRef="c-10" decimals="4" id="f-22" unitRef="number">0.0000</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets contextRef="c-10" decimals="4" id="f-23" unitRef="number">0.0000</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets contextRef="c-10" decimals="4" id="f-24" unitRef="number">0.0053</oef:ExpensesOverAssets>
    <oef:ExpenseExampleHeading contextRef="c-2" id="f-25">Expense Example</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock contextRef="c-11" id="f-27">This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then continue to hold or redeem all of your Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same.</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleNarrativeTextBlock contextRef="c-2" id="f-26">This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then continue to hold or redeem all of your Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same.</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleNoRedemptionByYearCaption contextRef="c-2" id="f-28">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</oef:ExpenseExampleNoRedemptionByYearCaption>
    <oef:ExpenseExampleByYearCaption contextRef="c-2" id="f-29">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</oef:ExpenseExampleByYearCaption>
    <oef:ExpenseExampleYear01 contextRef="c-10" decimals="0" id="f-30" unitRef="usd">54</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01 contextRef="c-10" decimals="0" id="f-31" unitRef="usd">54</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03 contextRef="c-10" decimals="0" id="f-32" unitRef="usd">170</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03 contextRef="c-10" decimals="0" id="f-33" unitRef="usd">170</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05 contextRef="c-10" decimals="0" id="f-34" unitRef="usd">296</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05 contextRef="c-10" decimals="0" id="f-35" unitRef="usd">296</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleNoRedemptionYear10 contextRef="c-10" decimals="0" id="f-36" unitRef="usd">665</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10 contextRef="c-10" decimals="0" id="f-37" unitRef="usd">665</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading contextRef="c-2" id="f-38">Portfolio Turnover</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock contextRef="c-2" id="f-39">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund&#x2019;s performance. For the fiscal year ended February&#160;28, 2026, the Fund&#x2019;s portfolio turnover rate was 13% of the average value of its portfolio.&lt;/span&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate contextRef="c-2" decimals="2" id="f-40" unitRef="number">0.13</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading contextRef="c-2" id="f-41">Principal Investment Strategy</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock contextRef="c-2" id="f-42">&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund uses a &#x201c;passive management&#x201d; &#x2013; or indexing &#x2013; investment approach to track the performance, before fees and expenses, of the Index.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;USREX &#x2013; U.S. Diversified Real Estate Index&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Index uses a rules-based methodology to provide diversified exposure to the liquid U.S. real estate market.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Construction of the Index begins with the universe of U.S.-listed equity securities with a market capitalization of at least $750 million and meeting certain liquidity thresholds (the &#x201c;Equity Universe&#x201d;). Companies in the Equity Universe are then screened to keep only those that derive at least 85% of their income from ownership or management of real property. Companies that meet this criterion are then screened to remove companies that are externally managed or that have a low percentage of their shares directly or indirectly available to the public. The companies remaining after the above screens constitute the Index&#x2019;s investment universe.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;  &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Index is designed to ensure diversification by property type and by location, while favoring companies with prudent leverage (&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;i.e.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;,&#160;the debt-to-enterprise value ratio of real estate investments). Companies in the Index&#x2019;s investment universe may not be included in the Index due to certain leverage levels. Individual securities are subject to a maximum weighting of 4% at the time of each reconstitution of the Index.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;  &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Index rules assign each company in the Index a classification (each, a &#x201c;Property Type&#x201d;) based on the percentage of the company&#x2019;s assets invested in a particular property type. The Property Types included in the Index and the weight allocated to each Property Type, as of each Index reconstitution date, are as follows:&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;vertical-align:top;width:100.000%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:23.694%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:5.612%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.484%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:24.242%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:5.612%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.347%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:27.393%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:5.616%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Residential &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;21.1%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Hotel &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;7.1%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Manufactured Home&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2.1%&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Office&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;16.2%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Health Care&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;8.5%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Self-Storage &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2.2%&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Industrial &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;13.9%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Data Center &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;8.1%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Home &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;0%&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="border-bottom:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Retail &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="border-bottom:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;13.2%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-bottom:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-bottom:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Diversified &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="border-bottom:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;7.7%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-bottom:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-bottom:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-bottom:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Alternative and specialty Property Types not shown above, &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;e.g.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;, infrastructure, casinos, billboards, prisons, are excluded from the Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Index seeks to diversify the geographic exposure of each Property Type by weighting each company within a Property Type based on the value and location of each property owned by such company. For each of the Residential, Office, Industrial, Retail, and Diversified Property Types, the Index calculates a target weight for each of the largest metropolitan areas in the United States based on factors related to population and productivity (each, a &#x201c;Metro Area&#x201d;), generally assigning higher target weights to Metro Areas with larger populations and greater productivity. The Index seeks to weight companies in each such Property Type so as to allocate the target weight assigned to each Metro Area, if any.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Index also establishes target leverage levels by Property Type. Allocations to a company are reduced in proportion to the extent to which such company&#x2019;s leverage level exceeds the greater of (i) the target leverage level for the applicable Property Type or (ii)&#160;the weighted average leverage level for the applicable Property Type.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Index is reconstituted and rebalanced semi-annually in January and July. To reduce turnover, lower market capitalization and liquidity thresholds apply to companies included in the Index with respect to whether they are removed at the time of a reconstitution.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Index is expected to be primarily composed of companies that qualify as real estate investment trusts (&#x201c;REITs&#x201d;) but may also include real estate companies that are not tax-qualified REITs.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Index was created on January 9, 2018 by Vident Financial, LLC, the former parent company of Vident Asset Management (&#x201c;Vident&#x201d; or the &#x201c;Adviser&#x201d;), for use by the Fund. The Adviser now also serves as the Index provider.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;The Fund&#x2019;s Investment Strategy&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Under normal circumstances, at least 80% of the Fund&#x2019;s net assets, plus borrowings for investment purposes, will be invested in real estate companies principally traded on a U.S. exchange. The foregoing policy may be changed without shareholder approval upon 60 days&#x2019; written notice to shareholders. For purposes of the foregoing policy, the Fund defines &#x201c;real estate companies&#x201d; to mean companies that (i) earn a majority of their revenue or income from or have a majority of their assets invested in owning or managing real estate properties or (ii) are structured as REITs.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund will generally use a &#x201c;replication&#x201d; strategy to achieve its investment objective, meaning it generally will invest in all of the component securities of the Index in approximately the same proportion as in the Index. However, the Fund may use a &#x201c;representative sampling&#x201d; strategy, meaning it may invest in a sample of the securities in the Index whose risk, return and other characteristics closely resemble the risk, return and other characteristics of the Index as a whole, when the Fund&#x2019;s adviser believes it is in the best interests of the Fund (&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;e.g.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;, when replicating the Index involves practical difficulties or substantial costs, an Index constituent becomes temporarily illiquid, unavailable, or less liquid, or as a result of legal restrictions or limitations that apply to the Fund but not to the Index).&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;  &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund generally may invest in securities or other investments not included in the Index, but which the Fund&#x2019;s adviser believes will help the Fund track the Index. For example, the Fund may invest in securities that are not components of the Index to reflect various corporate actions and other changes to the Index (such as reconstitutions, additions, and deletions).&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;  &lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;To the extent the Index concentrates (&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;i.e.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;, holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index. The Index, and consequently the Fund, is expected to generally be concentrated in real estate-related industries.&lt;/span&gt;</oef:StrategyNarrativeTextBlock>
    <oef:StrategyPortfolioConcentration contextRef="c-2" id="f-43">To the extent the Index concentrates (i.e., holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index. The Index, and consequently the Fund, is expected to generally be concentrated in real estate-related industries.</oef:StrategyPortfolioConcentration>
    <oef:RiskTextBlock contextRef="c-12" id="f-44">As with any investment, there is a risk that you could lose all or a portion of your investment in the Fund.</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-13" id="f-45">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Concentration Risk. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund&#x2019;s investments will be concentrated in an industry or group of industries to the extent that the Index is so concentrated, and the Index is expected to be concentrated in real estate-related industries. Accordingly, the value of Shares may rise and fall more than the value of shares of a fund that invests in securities of companies in a broader range of industries. In addition, at times, real estate-related industries may be out of favor and underperform other industries or groups of industries or the market as a whole.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-14" id="f-46">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Equity Market Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The equity securities held in the Fund&#x2019;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. 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 issuers. In addition, local, regional or global events such as war, including Russia&#x2019;s invasion of Ukraine,  regional armed conflict, acts of terrorism,  market volatility related to global trade policy and the imposition of tariffs, the spread of infectious diseases or other public health issues (such as the global pandemic caused by the COVID-19 virus), recessions, rising inflation, or other events could have a significant negative impact on the Fund and its investments. Such events may affect certain geographic regions, countries, sectors and industries more significantly than others. Such events could adversely affect the prices and liquidity of the Fund&#x2019;s portfolio securities or other instruments and could result in disruptions in the trading markets.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-15" id="f-47">&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:18pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;ETF Risks. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund is an ETF, and, as a result of an ETF&#x2019;s structure, it is exposed to the following risks:&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk.&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund has a limited number of financial institutions that may act as Authorized Participants (&#x201c;APs&#x201d;). 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)&#160;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)&#160;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. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Costs of Buying or Selling Shares.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Shares May Trade at Prices Other Than NAV. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;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&#x2019;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. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Trading&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Although Shares are listed for trading on NYSE Arca, Inc. (the &#x201c;Exchange&#x201d;) 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 may begin to mirror the liquidity of the Fund&#x2019;s underlying portfolio holdings, which can be significantly less liquid than Shares, and this could lead to differences between the market price of the Shares and the underlying value of those Shares.&lt;/span&gt;&lt;/div&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-16" id="f-48">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk.&#160;&lt;/span&gt;The Fund has a limited number of financial institutions that may act as Authorized Participants (&#x201c;APs&#x201d;). 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)&#160;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)&#160;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.</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-17" id="f-49">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Costs of Buying or Selling Shares.&lt;/span&gt; Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-18" id="f-50">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Shares May Trade at Prices Other Than NAV. &lt;/span&gt;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&#x2019;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.</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-19" id="f-51">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Trading&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Although Shares are listed for trading on NYSE Arca, Inc. (the &#x201c;Exchange&#x201d;) 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 may begin to mirror the liquidity of the Fund&#x2019;s underlying portfolio holdings, which can be significantly less liquid than Shares, and this could lead to differences between the market price of the Shares and the underlying value of those Shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-20" id="f-52">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Models and Data Risk.&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The composition of the Index is heavily dependent on a proprietary quantitative model as well as information and data supplied by third parties (&#x201c;Models and Data&#x201d;).&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;When Models and Data prove to be incorrect or incomplete, any decisions made in reliance thereon may lead to the inclusion or exclusion of securities from the Index that would have been excluded or included had the Models and Data been correct and complete. If the composition of the Index reflects such errors, the Fund&#x2019;s portfolio can be expected to reflect the errors, too.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-21" id="f-53">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Passive Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;. The Fund is not actively managed, and its adviser would not sell shares of an equity security due to current or projected underperformance of a security, industry, or sector, unless that security is removed from the Index or the &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;selling of shares of that security is otherwise required upon a reconstitution or rebalancing of the Index in accordance with the Index methodology.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-22" id="f-54">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Real Estate Investment Risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; Investments in real estate companies involve unique risks. Real estate companies, including REITs and real estate operating companies, may have limited financial resources, may trade less frequently and in limited volume, and may be more volatile than other securities. Investing in real estate companies entails certain risks associated with the direct ownership of real estate, such as a decrease in value of real estate, as well as the real estate industry in general. Many factors may affect real estate values, including general, regional and local economic conditions, fluctuations in interest rates and property tax rates, the amount of new construction in a particular area, laws and regulations affecting real estate (including zoning and tax laws, environmental regulations, and other governmental action, such as the exercise of eminent domain), and the costs of owning, maintaining and improving real estate. The availability of mortgages may also affect real estate values. Real estate companies are also subject to heavy cash flow dependency, increased operating expenses, the skill of management, changes in property values and rental rates, overbuilding, losses due to natural disasters, casualty or condemnation, defaults by borrowers, and self-liquidation. &lt;/span&gt;In addition to these risks, property-owning REITs may be affected by changes in the value of the underlying property owned by the trusts, while mortgage-based REITs may be affected by the quality of any credit extended. REITs are also subject to heavy cash flow dependency, defaults by borrowers and self-liquidation. In addition, U.S. REITs could possibly fail to qualify for the beneficial tax treatment available to REITs under the Internal Revenue Code of 1986, as amended (the &#x201c;Code&#x201d;), or to maintain their exemptions from registration under the Investment Company Act of 1940, as amended (the &#x201c;1940 Act&#x201d;). The Fund expects that dividends received from a REIT and distributed to Fund shareholders generally will be taxable to the shareholder as ordinary income. The above factors may also adversely affect a borrower&#x2019;s or a lessee&#x2019;s ability to meet its obligations to the REIT. In the event of a default by a borrower or lessee, the REIT may experience delays in enforcing its rights as a mortgagee or lessor and may incur substantial costs associated with protecting investments. In addition, the Fund holds interests in REITs, and it is expected that investors in the Fund will bear two layers of asset-based management fees and expenses (directly at the Fund level and indirectly at the REIT level).</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-23" id="f-55">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Smaller Companies Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The equity securities of smaller companies have historically been subject to greater investment risk than securities of larger companies. The prices of equity securities of smaller companies tend to be more volatile and less liquid than the prices of equity securities of larger companies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-24" id="f-56">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;As with all index funds, the performance of the Fund and the Index may differ from each other for a variety of reasons. For example, the Fund incurs operating expenses and portfolio transaction costs not incurred by the Index. In addition, the Fund may not be fully invested in the securities of the Index at all times or may hold securities not included in the Index.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading contextRef="c-2" id="f-57">Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock contextRef="c-2" id="f-59">&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following performance information indicates some of the risks of investing in the Fund. The bar chart shows the Fund&#x2019;s performance for the calendar years ended December 31. The table illustrates how the Fund&#x2019;s average annual returns for the 1-year, 5-year, and since inception periods compare with those of the Index, the S&amp;amp;P 500&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; Index, a broad measure of U.S. equity market performance and the Fund&#x2019;s primary benchmark index, and the MSCI US REIT Gross Index, the Fund&#x2019;s secondary benchmark index. The Fund&#x2019;s past performance, before and after taxes, does not necessarily indicate how it will perform in the future. Updated performance information is available on the Fund&#x2019;s website at videntam.com/etf/us-diversified-real-estate-etf/.&lt;/span&gt;&lt;/div&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns contextRef="c-2" id="f-58">The following performance information indicates some of the risks of investing in the Fund.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceAdditionalMarketIndex contextRef="c-2" id="f-60">The table illustrates how the Fund&#x2019;s average annual returns for the 1-year, 5-year, and since inception periods compare with those of the Index, the S&amp;P 500&#xae; Index, a broad measure of U.S. equity market performance and the Fund&#x2019;s primary benchmark index, and the MSCI US REIT Gross Index, the Fund&#x2019;s secondary benchmark index.</oef:PerformanceAdditionalMarketIndex>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="c-2" id="f-61">The Fund&#x2019;s past performance, before and after taxes, does not necessarily indicate how it will perform in the future.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress contextRef="c-2" id="f-62">videntam.com/etf/us-diversified-real-estate-etf/</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:BarChartHeading contextRef="c-2" id="f-63">Calendar Year Total Returns</oef:BarChartHeading>
    <oef:BarChartClosingTextBlock contextRef="c-2" id="f-64">&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;For the year-to-date period ended March 31, 2026, the Fund&#x2019;s total return was 0.16%.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;  &lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;During the period of time shown in the bar chart, the Fund&#x2019;s highest quarterly return was 17.02% for the quarter ended March 31, 2019, and the lowest quarterly return was -25.49% for the quarter ended March 31, 2020.&lt;/span&gt;</oef:BarChartClosingTextBlock>
    <oef:YearToDateReturnLabel contextRef="c-2" id="f-65">year-to-date period</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturnDate contextRef="c-2" id="f-66">2026-03-31</oef:BarChartYearToDateReturnDate>
    <oef:BarChartYearToDateReturn contextRef="c-2" decimals="4" id="f-67" unitRef="number">0.0016</oef:BarChartYearToDateReturn>
    <oef:HighestQuarterlyReturnLabel contextRef="c-2" id="f-68">highest quarterly return</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn contextRef="c-2" decimals="4" id="f-69" unitRef="number">0.1702</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate contextRef="c-2" id="f-70">2019-03-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel contextRef="c-2" id="f-71">lowest quarterly return</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn contextRef="c-2" decimals="4" id="f-72" unitRef="number">-0.2549</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate contextRef="c-2" id="f-73">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading contextRef="c-2" id="f-74">Average Annual Total Returns  For the Periods Ended December 31, 2025</oef:PerformanceTableHeading>
    <oef:PerfInceptionDate contextRef="c-25" id="f-75">2018-03-26</oef:PerfInceptionDate>
    <oef:AverageAnnualReturnLabel contextRef="c-25" id="f-76">Return Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct contextRef="c-26" decimals="4" id="f-77" unitRef="number">-0.0382</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-27" decimals="4" id="f-78" unitRef="number">0.0434</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-28" decimals="4" id="f-79" unitRef="number">0.0603</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel contextRef="c-29" id="f-80">Return After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct contextRef="c-30" decimals="4" id="f-81" unitRef="number">-0.0472</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-31" decimals="4" id="f-82" unitRef="number">0.0352</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-32" decimals="4" id="f-83" unitRef="number">0.0516</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel contextRef="c-33" id="f-84">Return After Taxes on Distributions and Sale of Fund Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct contextRef="c-34" decimals="4" id="f-85" unitRef="number">-0.0205</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-35" decimals="4" id="f-86" unitRef="number">0.0312</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-36" decimals="4" id="f-87" unitRef="number">0.0445</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel contextRef="c-37" id="f-88">USREX &#x2013; U.S. Diversified Real Estate Index&#x2122;(reflects no deduction for fees, expenses, or taxes)</oef:AverageAnnualReturnLabel>
    <oef:IndexNoDeductionForFeesExpensesTaxes contextRef="c-2" id="f-89">(reflects no deduction for fees, expenses, or taxes)</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct contextRef="c-38" decimals="4" id="f-90" unitRef="number">-0.0333</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-39" decimals="4" id="f-91" unitRef="number">0.0495</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-40" decimals="4" id="f-92" unitRef="number">0.0651</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel contextRef="c-41" id="f-93">S&amp;P 500&#xae; Index(reflects no deduction for fees, expenses, or taxes)</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct contextRef="c-42" decimals="4" id="f-94" unitRef="number">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-43" decimals="4" id="f-95" unitRef="number">0.1442</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-44" decimals="4" id="f-96" unitRef="number">0.1481</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel contextRef="c-45" id="f-97">MSCI US REIT Gross Index(reflects no deduction for fees, expenses, or taxes)</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct contextRef="c-46" decimals="4" id="f-98" unitRef="number">0.0295</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-47" decimals="4" id="f-99" unitRef="number">0.0658</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct contextRef="c-48" decimals="4" id="f-100" unitRef="number">0.0715</oef:AvgAnnlRtrPct>
    <oef:PerformanceTableClosingTextBlock contextRef="c-2" id="f-102">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates during the period covered by the table above and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Shares through tax-deferred arrangements such as an individual retirement account (&#x201c;IRA&#x201d;) or other tax-advantaged accounts. In certain cases, the figure representing &#x201c;Return After Taxes on Distributions and Sale of Shares&#x201d; may be higher than the other return figures for the same period. A higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.&lt;/span&gt;</oef:PerformanceTableClosingTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate contextRef="c-2" id="f-101">After-tax returns are calculated using the historical highest individual federal marginal income tax rates during the period covered by the table above and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred contextRef="c-2" id="f-103">After-tax returns shown are not relevant to investors who hold their Shares through tax-deferred arrangements such as an individual retirement account (&#x201c;IRA&#x201d;) or other tax-advantaged accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher contextRef="c-2" id="f-104">In certain cases, the figure representing &#x201c;Return After Taxes on Distributions and Sale of Shares&#x201d; may be higher than the other return figures for the same period. A higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.</oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:RiskReturnHeading contextRef="c-11" id="f-106">The Frontier Economic Fund</oef:RiskReturnHeading>
    <oef:ObjectiveHeading contextRef="c-11" id="f-107">Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock contextRef="c-11" id="f-108">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Frontier Economic Fund (the &#x201c;Fund&#x201d;) seeks to track the performance, before fees and expenses, of The Alaska Last Frontier Index (the &#x201c;Index&#x201d;).&lt;/span&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading contextRef="c-11" id="f-109">Fees and Expenses of the Fund</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock contextRef="c-11" id="f-110">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund (&#x201c;Shares&#x201d;). &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and Example below.&lt;/span&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption contextRef="c-11" id="f-111">Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets contextRef="c-49" decimals="4" id="f-112" unitRef="number">0.0020</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets contextRef="c-49" decimals="4" id="f-113" unitRef="number">0.0000</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets contextRef="c-49" decimals="4" id="f-114" unitRef="number">0.0000</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets contextRef="c-49" decimals="4" id="f-115" unitRef="number">0.0020</oef:ExpensesOverAssets>
    <oef:ExpenseExampleHeading contextRef="c-11" id="f-116">Expense Example</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock contextRef="c-11" id="f-117">This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then continue to hold or redeem all of your Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same.</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleNoRedemptionByYearCaption contextRef="c-11" id="f-118">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</oef:ExpenseExampleNoRedemptionByYearCaption>
    <oef:ExpenseExampleByYearCaption contextRef="c-11" id="f-119">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</oef:ExpenseExampleByYearCaption>
    <oef:ExpenseExampleYear01 contextRef="c-49" decimals="0" id="f-120" unitRef="usd">20</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01 contextRef="c-49" decimals="0" id="f-121" unitRef="usd">20</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleNoRedemptionYear03 contextRef="c-49" decimals="0" id="f-122" unitRef="usd">64</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear03 contextRef="c-49" decimals="0" id="f-123" unitRef="usd">64</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear05 contextRef="c-49" decimals="0" id="f-124" unitRef="usd">113</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear05 contextRef="c-49" decimals="0" id="f-125" unitRef="usd">113</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear10 contextRef="c-49" decimals="0" id="f-126" unitRef="usd">255</oef:ExpenseExampleNoRedemptionYear10>
    <oef:ExpenseExampleYear10 contextRef="c-49" decimals="0" id="f-127" unitRef="usd">255</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading contextRef="c-11" id="f-128">Portfolio Turnover</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock contextRef="c-11" id="f-129">&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund&#x2019;s performance. For the fiscal period June 25, 2025 (commencement of operations) through February 28, 2026, the Fund&#x2019;s portfolio turnover rate was 29% of the average value of its portfolio.&lt;/span&gt;&lt;/div&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate contextRef="c-11" decimals="2" id="f-130" unitRef="number">0.29</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading contextRef="c-11" id="f-131">Principal Investment Strategy</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock contextRef="c-11" id="f-132">&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund employs a &#x201c;passive management&#x201d; - or indexing - investment approach designed to track the performance of the Index.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;The Alaska Last Frontier Index&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Index is a rules-based strategy index comprised of U.S. and non-U.S. listed equity securities of companies and MLPs that have exposure to the State of Alaska through their engagement in Alaskan Business Activities (defined below) (&#x201c;Alaska Companies&#x201d;), as determined by the index methodology criteria developed by Vident Asset Management (&#x201c;Vident&#x201d; or the &#x201c;Adviser&#x201d;). The starting universe of eligible companies in the Index consists of companies with market capitalization of at least $100 million (excluding non-traded shares). Companies eligible for inclusion must also meet certain minimum liquidity requirements.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Index identifies and selects companies for inclusion using criteria designed to evaluate the extent of a company&#x2019;s business activities connected to Alaska, including involvement in the state&#x2019;s economic development through state revenue and GDP growth, job creation for Alaskan residents, having a local operational presence and physical assets in the State, and/or playing a role in Alaska&#x2019;s long-term development. To be eligible for inclusion in the Index, a company must meet one of the following criteria related to its business activities in Alaska: (1) Operational Presence, or (2) Capital Investment, each as defined below (together, &#x201c;Alaskan Business Activities&#x201d;). To demonstrate Operational Presence in Alaska, a company must (i) employ full-time or part-time workers within Alaska or (ii) be physically present through the location of its regional headquarters, logistics hubs, retail outlets or other infrastructure in Alaska. To demonstrate Capital Investment, a company must (i) engage in strategic partnerships in Alaska (&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;e.g.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;, collaborations or formal partnerships within Alaska, including those with government entities, private enterprises, or publicly traded companies) or (ii) make fixed asset investments in Alaska (&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;e.g.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;, deployment of capital in mines, ports, pipelines, data centers, or other substantial infrastructure). Such data is collected from, but not limited to, a company&#x2019;s press releases, public regulatory filings, documents &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;provided by a company&#x2019;s investment relations department, and other publicly available sources. If a company&#x2019;s exposure to Alaskan Business Activities is below a minimum threshold, as determined by this criteria, the company will be excluded from the Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Eligible companies are weighted according to their market capitalization tier, defined as large-cap for all stocks in the top 70% of the investable universe by market capitalization, mid-cap for the next 20%, and small-cap for the remaining stocks. Upward adjustments to weighting are made programmatically to emphasize companies belonging to sectors that are particularly significant to Alaska&#x2019;s economy as measured by Alaska&#x2019;s share of U.S. GDP attributable to that sector. Accordingly, companies belonging to sectors deemed more central to the state&#x2019;s economic profile, as determined by these criteria, are eligible to receive a higher weighting in the Index.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Index components are selected and weighted based on the above factors, subject to certain adjustments and limitations, including the following constraints: market capitalization, maximum allocation to a single security, minimum allocation to a single security, and minimum liquidity threshold. All Index rules are systematized and rely on data available at the end of each rebalancing period. The Index is reconstituted and rebalanced semi-annually in February and August.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Index was created by Vident in 2025 for use by the Fund.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;The Fund&#x2019;s Investment Strategy&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Under normal circumstances, the Fund invests primarily in equity securities of Alaska Companies.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund attempts to invest all, or substantially all, of its assets in the common stocks that make up the Index. The Fund will generally use a &#x201c;replication&#x201d; strategy to achieve its investment objective, meaning it may invest in all of the component securities of the Index, but may, when Vident believes it is in the best interests of the Fund, use a &#x201c;representative sampling&#x201d; strategy, meaning it may invest in a sample of the securities in the Index whose risk, return and other characteristics closely resemble the risk, return and other characteristics of the Index as a whole. The Adviser expects that, over time, the correlation between the Fund&#x2019;s performance and that of the Index, before fees and expenses, will be 95% or better.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;To the extent the Index concentrates (&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;i.e.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;, holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index. As of May 31, 2026, the Index, and consequently the Fund, had significant exposure to the industrial, energy, and consumer discretionary sectors and as of May 31, 2026, the Index was not concentrated in any industry or group of industries.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund.&lt;/span&gt;&lt;/div&gt;</oef:StrategyNarrativeTextBlock>
    <oef:StrategyPortfolioConcentration contextRef="c-11" id="f-133">To the extent the Index concentrates (i.e., holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index. As of May 31, 2026, the Index, and consequently the Fund, had significant exposure to the industrial, energy, and consumer discretionary sectors and as of May 31, 2026, the Index was not concentrated in any industry or group of industries.</oef:StrategyPortfolioConcentration>
    <oef:RiskTextBlock contextRef="c-50" id="f-134">As with any investment, there is a risk that you could lose all or a portion of your investment in the Fund.</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-51" id="f-135">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;ADR Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;ADRs involve risks similar to those associated with investments in foreign securities, such as changes in political or economic conditions of other countries and changes in the exchange rates of foreign currencies. ADRs listed on U.S. exchanges are issued by banks or trust companies, and ADRs entitle the holder to all dividends and capital gains that are paid out on the underlying foreign shares.</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-52" id="f-136">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Equity Market Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The equity securities held in the Fund&#x2019;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. 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 issuers. In addition, local, regional or global events such as war, including Russia&#x2019;s invasion of Ukraine,  regional armed conflict, acts of terrorism,  market volatility related to global trade policy and the imposition of tariffs, the spread of infectious diseases or other public health issues (such as the global pandemic caused by the COVID-19 virus), recessions, rising inflation, or other events could have a significant negative impact on the Fund and its investments. Such events may affect certain geographic regions, countries, sectors and industries more significantly than others. Such events could adversely affect the prices and liquidity of the Fund&#x2019;s portfolio securities or other instruments and could result in disruptions in the trading markets.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-53" id="f-137">&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:18pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;ETF Risks. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund is an ETF, and, as a result of an ETF&#x2019;s structure, it is exposed to the following risks:&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk.&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund has a limited number of financial institutions that may act as Authorized Participants (&#x201c;APs&#x201d;). 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)&#160;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)&#160;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. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Costs of Buying or Selling Shares.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Shares May Trade at Prices Other Than NAV. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;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&#x2019;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. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Trading&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Although Shares are listed for trading on the New York Stock Exchange (the &#x201c;Exchange&#x201d;) 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. There can be no assurance that an active trading market for such Shares will develop or be maintained. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund&#x2019;s underlying portfolio holdings, which can be significantly less liquid than Shares, and this could lead to differences between the market price of the Shares and the underlying value of those Shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-54" id="f-138">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk.&#160;&lt;/span&gt;The Fund has a limited number of financial institutions that may act as Authorized Participants (&#x201c;APs&#x201d;). 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)&#160;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)&#160;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.</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-55" id="f-139">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Costs of Buying or Selling Shares.&lt;/span&gt; Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-56" id="f-140">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Shares May Trade at Prices Other Than NAV. &lt;/span&gt;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&#x2019;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.</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-57" id="f-141">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Trading&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Although Shares are listed for trading on the New York Stock Exchange (the &#x201c;Exchange&#x201d;) 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. There can be no assurance that an active trading market for such Shares will develop or be maintained. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund&#x2019;s underlying portfolio holdings, which can be significantly less liquid than Shares, and this could lead to differences between the market price of the Shares and the underlying value of those Shares.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-58" id="f-142">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Foreign Securities Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;. Investments in non-U.S. securities involve certain risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. There may be less information publicly available about a non-U.S. issuer than a U.S. issuer. Investments in non-U.S. securities also may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. These and other factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-59" id="f-143">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Geographic Investment Risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; The Fund invests primarily in the securities of Alaska Companies. As a result, the Fund is more likely to be impacted by events or conditions affecting Alaska. For example, political and economic conditions and changes in regulatory, tax, or economic policy in Alaska could significantly affect Alaska Companies, result in significant market volatility, and have a negative impact on the Fund&#x2019;s performance. In particular, the economic success of Alaska Companies may depend upon their access to natural resources and commodities located in Alaska, which may be barred or limited by the local, state, or federal government. In addition, Alaska&#x2019;s environment and local economy is subject to significant risks related to the impact of climate change, such as sea level rise, thawing permafrost, coastal erosion, as well as natural disasters such as earthquakes, wildfire, and tsunamis.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-60" id="f-144">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Market Capitalization Risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Large-Capitalization Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;. The Fund may invest in the securities of large-capitalization companies. 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.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Mid-Capitalization Investing Risk. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund may invest in the securities of mid-capitalization companies. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies, but they may also be subject to slower growth than small-capitalization companies during times of economic expansion. 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. Mid-capitalization companies may be particularly sensitive to changes in interest rates, government regulation, borrowing costs, and earnings.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Small-Capitalization Investing Risk. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund may invest in the securities of small-capitalization companies. The securities of small-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of larger-capitalization companies. The securities of small-capitalization companies generally trade in lower &lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;volumes and are subject to greater and more unpredictable price changes than larger capitalization stocks or the stock market as a whole. Small-capitalization companies also may be particularly sensitive to changes in interest rates, government regulation, borrowing costs and earnings.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-61" id="f-145">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Large-Capitalization Investing Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;. The Fund may invest in the securities of large-capitalization companies. 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.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-62" id="f-146">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Mid-Capitalization Investing Risk. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund may invest in the securities of mid-capitalization companies. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies, but they may also be subject to slower growth than small-capitalization companies during times of economic expansion. 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. Mid-capitalization companies may be particularly sensitive to changes in interest rates, government regulation, borrowing costs, and earnings.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-63" id="f-147">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Small-Capitalization Investing Risk. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Fund may invest in the securities of small-capitalization companies. The securities of small-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of larger-capitalization companies. The securities of small-capitalization companies generally trade in lower &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;volumes and are subject to greater and more unpredictable price changes than larger capitalization stocks or the stock market as a whole. Small-capitalization companies also may be particularly sensitive to changes in interest rates, government regulation, borrowing costs and earnings.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-64" id="f-148">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;MLP Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;MLP investment returns are enhanced during periods of declining or low interest rates and tend to be negatively influenced when interest rates are rising. In addition, most MLPs are fairly leveraged and typically carry a portion of a &#x201c;floating&#x201d; rate debt. As such, a significant upward swing in interest rates would also drive interest expense higher. Furthermore, most MLPs grow by acquisitions partly financed by debt, and higher interest rates could make it more difficult to make acquisitions. MLP investments also entail many of the general tax risks of investing in a partnership. Limited partners in an MLP typically have limited control and limited rights to vote on matters affecting the partnership. Additionally, there is always the risk that an MLP will fail to qualify for favorable tax treatment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-65" id="f-149">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;New Fund Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;The Fund is a recently organized investment company with limited operating history. As a result, prospective investors have limited track record or history on which to base their investment decision.</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-66" id="f-150">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Non-Diversification Risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; The Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund&#x2019;s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund&#x2019;s performance.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-67" id="f-151">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Passive Investment Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;. The Fund invests in the securities included in, or representative of, the Index regardless of their investment merit. The Fund does not attempt to outperform the Index or take defensive positions in declining markets. As a result, the Fund&#x2019;s performance may be adversely affected by a general decline in the market segments relating to the Index.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-68" id="f-152">&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:18pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Sector Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt;&#160;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors. The Fund may invest a significant portion of its assets in the following sectors and, therefore, the performance of the Fund could be negatively impacted by events affecting each of these sectors.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Consumer Discretionary Sector Risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; The success of consumer product manufacturers and retailers is tied closely to the performance of domestic and international economies, interest rates, exchange rates, competition, consumer confidence, changes in demographics and consumer preferences. Companies in the consumer discretionary sector depend heavily on disposable household income and consumer spending, and such companies may be strongly affected by social trends and marketing campaigns. These companies may be subject to severe competition, which may have an adverse impact on their profitability.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Energy Sector Risk. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The energy sector is comprised of energy, industrial, infrastructure, and logistics companies, and will therefore be susceptible to adverse economic, environmental, business, regulatory, or other occurrences affecting that sector. The energy sector has historically experienced substantial price volatility. At times, the performance of these investments may lag the performance of other sectors or the market as a whole. Companies operating in the energy sector are subject to specific risks, including, among others, fluctuations in commodity prices; reduced consumer demand for commodities such as oil, natural gas, or petroleum products; reduced availability of natural gas or other commodities for transporting, processing, storing, or delivering; slowdowns in new construction; extreme weather or other natural disasters; and threats of attack by terrorists on energy assets. Additionally, energy sector companies are subject to substantial government regulation and changes in the regulatory environment for energy companies may adversely impact their profitability. Over time, depletion of natural gas reserves and other energy reserves may also affect the profitability of energy companies.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x25e6;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Industrials Sector Risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; The industrials sector can be significantly affected by, among other things, worldwide economic growth, supply and demand for specific products and services, rapid technological developments, international political and economic developments, environmental issues, tariffs and trade barriers, and tax and governmental regulatory policies. As the demand for, or prices of, industrials increase, the value of the Fund&#x2019;s investments generally would be expected to also increase. Conversely, declines in the demand for, or prices of, industrials generally would be expected to contribute to declines in the value of such securities. Such declines may occur quickly and without warning and may negatively impact the value of the Fund and your investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-69" id="f-153">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Consumer Discretionary Sector Risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; The success of consumer product manufacturers and retailers is tied closely to the performance of domestic and international economies, interest rates, exchange rates, competition, consumer confidence, changes in demographics and consumer preferences. Companies in the consumer discretionary sector depend heavily on disposable household income and consumer spending, and such companies may be strongly affected by social trends and marketing campaigns. These companies may be subject to severe competition, which may have an adverse impact on their profitability.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-70" id="f-154">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Energy Sector Risk. &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The energy sector is comprised of energy, industrial, infrastructure, and logistics companies, and will therefore be susceptible to adverse economic, environmental, business, regulatory, or other occurrences affecting that sector. The energy sector has historically experienced substantial price volatility. At times, the performance of these investments may lag the performance of other sectors or the market as a whole. Companies operating in the energy sector are subject to specific risks, including, among others, fluctuations in commodity prices; reduced consumer demand for commodities such as oil, natural gas, or petroleum products; reduced availability of natural gas or other commodities for transporting, processing, storing, or delivering; slowdowns in new construction; extreme weather or other natural disasters; and threats of attack by terrorists on energy assets. Additionally, energy sector companies are subject to substantial government regulation and changes in the regulatory environment for energy companies may adversely impact their profitability. Over time, depletion of natural gas reserves and other energy reserves may also affect the profitability of energy companies.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-71" id="f-155">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.46pt"&gt;Industrials Sector Risk.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; The industrials sector can be significantly affected by, among other things, worldwide economic growth, supply and demand for specific products and services, rapid technological developments, international political and economic developments, environmental issues, tariffs and trade barriers, and tax and governmental regulatory policies. As the demand for, or prices of, industrials increase, the value of the Fund&#x2019;s investments generally would be expected to also increase. Conversely, declines in the demand for, or prices of, industrials generally would be expected to contribute to declines in the value of such securities. Such declines may occur quickly and without warning and may negatively impact the value of the Fund and your investment.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock contextRef="c-72" id="f-156">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%;padding-left:14.5pt"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;As with all index funds, the performance of the Fund and the Index may differ from each other for a variety of reasons. For example, the Fund incurs operating expenses and portfolio transaction costs not incurred by the Index. In addition, the Fund may not be fully invested in the securities of the Index at all times or may hold securities not included in the Index.&lt;/span&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading contextRef="c-11" id="f-157">Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock contextRef="c-11" id="f-159">&lt;div style="margin-bottom:6pt;margin-top:6pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus. In the future, performance information for the Fund will be presented in this section. Updated performance information will be available on the Fund&#x2019;s website at www.thealaskaetf.com&lt;/span&gt;&lt;/div&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceOneYearOrLess contextRef="c-11" id="f-158">Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus.</oef:PerformanceOneYearOrLess>
    <oef:PerformanceAvailabilityWebSiteAddress contextRef="c-11" id="f-160">www.thealaskaetf.com</oef:PerformanceAvailabilityWebSiteAddress>
</xbrl>
