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               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Top 10 Issuers&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;(%)&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Targa Resources Corp.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;16.9%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Energy Transfer, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;12.0%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;MPLX, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;11.5%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Plains GP Holdings, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;10.9%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Western Midstream Partners, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;9.5%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Williams Companies, Inc.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;8.3%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;ONEOK, Inc.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;7.8%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Cheniere Energy, Inc.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;7.1%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Enterprise Products Partners, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;7.0%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Phillips 66&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;2.1%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;Industry Breakdown (%)&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;img alt="image" src="ts7916img003.jpg" style="width:121.53708668453977%"/&gt;&lt;/div&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfTotalInv
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      unitRef="RATIO">0.115</oef:PctOfTotalInv>
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      contextRef="c_7916_instant_MainGateMLPFund_ClassA_2026-05-31_91383Member"
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      id="ixv-10158"
      unitRef="RATIO">0.109</oef:PctOfTotalInv>
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      unitRef="RATIO">0.021</oef:PctOfTotalInv>
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      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;This &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;semi-annual shareholder report&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt; contains important information about the &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;MainGate MLP Fund (the &#x201c;Fund&#x201d;) for the period &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;of&#160;&#x2009;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;December 1, 2025 to &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;May 31, 2026. &lt;/span&gt;</oef:AnnlOrSemiAnnlStatementTextBlock>
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      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;You can find additional information about the Fund at &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;https://maingatefunds.com/literature/&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;. You can also request this information by contacting us at&#160;&#x2009;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;1-855-MLP-FUND (1-855-657-3863)&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;.&lt;/span&gt;</oef:AddlInfoTextBlock>
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      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS?&#160;&#x2009;&lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(based on a hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #E6FAFF;border-left:1.5pt solid #E6FAFF;  border-right:1.5pt solid #E6FAFF;  border-bottom:1.5pt solid #E6FAFF; margin-left:7.9pt;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:50%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:22.33812949640288%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:27.661870503597125%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Class Name&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Costs of a $10,000 &lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;investment&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Costs paid as a percentage of &lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;a $10,000 investment&lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;*&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;Class C&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$133&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;2.45%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="c_7917_duration_MainGateMLPFund_ClassC_2025-12-01_2026-05-31Member"
      decimals="INF"
      id="ixv-10168"
      unitRef="USD">133</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="c_7917_duration_MainGateMLPFund_ClassC_2025-12-01_2026-05-31Member"
      decimals="INF"
      id="foot-7917_856071-1021"
      unitRef="RATIO">0.0245</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="c_7917_duration_MainGateMLPFund_ClassC_2025-12-01_2026-05-31Member"
      id="ixv-505"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;KEY FUND STATISTICS &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(as of &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;May 31, 2026)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #6B6B6B;margin-left:7.75pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:74.41007194244604%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:25.58992805755396%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Net Assets&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$834,604,338&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Number of Holdings&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;16&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Portfolio Turnover&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;4%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31Member"
      decimals="INF"
      id="ixv-10170"
      unitRef="USD">834604338</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31Member"
      decimals="INF"
      id="ixv-10171"
      unitRef="UNIT">16</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="c_7917_duration_MainGateMLPFund_ClassC_2025-12-01_2026-05-31Member"
      decimals="INF"
      id="ixv-10172"
      unitRef="RATIO">0.04</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="c_7917_duration_MainGateMLPFund_ClassC_2025-12-01_2026-05-31Member"
      id="ixv-548"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;WHAT DID THE FUND INVEST IN? &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(% of total investments as of&#160;&#x2009;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;May 31, 2026)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;margin-left:8.25pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:81.23020257826887%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:18.769797421731123%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Top 10 Issuers&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;(%)&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Targa Resources Corp.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;16.9%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Energy Transfer, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;12.0%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;MPLX, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;11.5%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Plains GP Holdings, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;10.9%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Western Midstream Partners, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;9.5%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Williams Companies, Inc.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;8.3%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;ONEOK, Inc.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;7.8%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Cheniere Energy, Inc.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;7.1%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Enterprise Products Partners, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;7.0%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Phillips 66&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;2.1%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;Industry Breakdown (%)&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;img alt="image" src="ts7917img003.jpg" style="width:121.53708668453977%"/&gt;&lt;/div&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfTotalInv
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      decimals="INF"
      id="ixv-10173"
      unitRef="RATIO">0.169</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_91378Member"
      decimals="INF"
      id="ixv-10174"
      unitRef="RATIO">0.120</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_91379Member"
      decimals="INF"
      id="ixv-10175"
      unitRef="RATIO">0.115</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_91383Member"
      decimals="INF"
      id="ixv-10176"
      unitRef="RATIO">0.109</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_91381Member"
      decimals="INF"
      id="ixv-10177"
      unitRef="RATIO">0.095</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_91384Member"
      decimals="INF"
      id="ixv-10178"
      unitRef="RATIO">0.083</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_26486Member"
      decimals="INF"
      id="ixv-10179"
      unitRef="RATIO">0.078</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_26487Member"
      decimals="INF"
      id="ixv-10180"
      unitRef="RATIO">0.071</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_91382Member"
      decimals="INF"
      id="ixv-10181"
      unitRef="RATIO">0.070</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_114875Member"
      decimals="INF"
      id="ixv-10182"
      unitRef="RATIO">0.021</oef:PctOfTotalInv>
    <oef:UpdProspectusWebAddress
      contextRef="c_7917_duration_MainGateMLPFund_ClassC_2025-12-01_2026-05-31Member"
      id="ixv-669"
      xml:lang="en-US">https://maingatefunds.com/literature/</oef:UpdProspectusWebAddress>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_91375Member"
      decimals="INF"
      id="ixv-10183"
      unitRef="RATIO">0.452</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_91376Member"
      decimals="INF"
      id="ixv-10184"
      unitRef="RATIO">0.284</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7917_instant_MainGateMLPFund_ClassC_2026-05-31_91377Member"
      decimals="INF"
      id="ixv-10185"
      unitRef="RATIO">0.264</oef:PctOfTotalInv>
    <oef:FundName
      contextRef="c_7918_duration_MainGateMLPFund_ClassI_2025-12-01_2026-05-31Member"
      id="ixv-714"
      xml:lang="en-US">MainGate MLP Fund</oef:FundName>
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      contextRef="c_7918_duration_MainGateMLPFund_ClassI_2025-12-01_2026-05-31Member"
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    <dei:TradingSymbol
      contextRef="c_7918_duration_MainGateMLPFund_ClassI_2025-12-01_2026-05-31Member"
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      xml:lang="en-US">IMLPX</dei:TradingSymbol>
    <dei:DocumentPeriodEndDate
      contextRef="c_7916_duration_MainGateMLPFund_2025-12-01_2026-05-31Member"
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      xml:lang="en-US">2026-05-31</dei:DocumentPeriodEndDate>
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      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;This &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;semi-annual shareholder report&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt; contains important information about the &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;MainGate MLP Fund (the &#x201c;Fund&#x201d;) for the period &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;of&#160;&#x2009;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;December 1, 2025 to &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;May 31, 2026. &lt;/span&gt;</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
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      xml:lang="en-US">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
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      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;You can find additional information about the Fund at &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;https://maingatefunds.com/literature/&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;. You can also request this information by contacting us at&#160;&#x2009;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;1-855-MLP-FUND (1-855-657-3863)&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;.&lt;/span&gt;</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="c_7918_duration_MainGateMLPFund_ClassI_2025-12-01_2026-05-31Member"
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    <oef:AddlInfoPhoneNumber
      contextRef="c_7918_duration_MainGateMLPFund_ClassI_2025-12-01_2026-05-31Member"
      id="ixv-749"
      xml:lang="en-US">1-855-MLP-FUND (1-855-657-3863)</oef:AddlInfoPhoneNumber>
    <oef:MaterialFundChngNoticeTextBlock
      contextRef="c_7918_duration_MainGateMLPFund_ClassI_2025-12-01_2026-05-31Member"
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      xml:lang="en-US">&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;"&gt;&lt;b&gt;&lt;i&gt;This report describes changes to the Fund that occurred during the reporting period.&lt;/i&gt;&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;</oef:MaterialFundChngNoticeTextBlock>
    <oef:ExpensesTextBlock
      contextRef="c_7918_duration_MainGateMLPFund_ClassI_2025-12-01_2026-05-31Member"
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      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS?&#160;&#x2009;&lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(based on a hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #E6FAFF;border-left:1.5pt solid #E6FAFF;  border-right:1.5pt solid #E6FAFF;  border-bottom:1.5pt solid #E6FAFF; margin-left:7.9pt;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:50%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:22.33812949640288%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:27.661870503597125%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Class Name&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Costs of a $10,000 &lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;investment&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Costs paid as a percentage of &lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;a $10,000 investment&lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;*&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;Class I&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$79&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;1.45%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
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      id="ixv-10186"
      unitRef="USD">79</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
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      decimals="INF"
      id="foot-7918_856162-1021"
      unitRef="RATIO">0.0145</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
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      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;KEY FUND STATISTICS &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(as of &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;May 31, 2026)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #6B6B6B;margin-left:7.75pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:74.41007194244604%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:25.58992805755396%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Net Assets&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$834,604,338&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Number of Holdings&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;16&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Portfolio Turnover&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
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            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;4%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
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    <us-gaap:AssetsNet
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    <us-gaap:InvestmentCompanyPortfolioTurnover
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      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;WHAT DID THE FUND INVEST IN? &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(% of total investments as of&#160;&#x2009;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;May 31, 2026)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;margin-left:8.25pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:81.23020257826887%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:18.769797421731123%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Top 10 Issuers&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;(%)&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Targa Resources Corp.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;16.9%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Energy Transfer, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;12.0%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;MPLX, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;11.5%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Plains GP Holdings, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;10.9%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Western Midstream Partners, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;9.5%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Williams Companies, Inc.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;8.3%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;ONEOK, Inc.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;7.8%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Cheniere Energy, Inc.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;7.1%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Enterprise Products Partners, L.P.&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E4F5FF;;border-bottom:0.75pt solid #6B6B6B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E4F5FF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;7.0%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:3pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="padding-left:0pt;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Phillips 66&lt;/span&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:3pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;2.1%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;Industry Breakdown (%)&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;img alt="image" src="ts7918img003.jpg" style="width:121.53708668453977%"/&gt;&lt;/div&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfTotalInv
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    <oef:UpdProspectusWebAddress
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      decimals="INF"
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      decimals="INF"
      id="ixv-10203"
      unitRef="RATIO">0.264</oef:PctOfTotalInv>
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