<?xml version='1.0' encoding='UTF-8'?>
<FilingSummary>
  <Version>3.3.1.900</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>465</ContextCount>
  <ElementCount>413</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>133</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>18</UnitCount>
  <MyReports>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>1001000 - Statement - Consolidated Statements of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/ConsolidatedStatementsOfOperations</Role>
      <ShortName>Consolidated Statements of Operations</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1002000 - Statement - Consolidated Statements of Comprehensive Income (Loss)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/ConsolidatedStatementsOfComprehensiveIncomeLoss</Role>
      <ShortName>Consolidated Statements of Comprehensive Income (Loss)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1003000 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/ConsolidatedStatementsOfCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1004000 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/ConsolidatedBalanceSheets</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1004501 - Statement - Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/ConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>1005000 - Statement - Consolidated Statements of Partners' Capital Statement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/ConsolidatedStatementsOfPartnersCapitalStatement</Role>
      <ShortName>Consolidated Statements of Partners' Capital Statement</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>2101100 - Disclosure - Organization and Description of Business</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/OrganizationAndDescriptionOfBusiness</Role>
      <ShortName>Organization and Description of Business</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>2102100 - Disclosure - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2103100 - Disclosure - Net Income Per Limited Partner and General Partner Interest</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/NetIncomePerLimitedPartnerAndGeneralPartnerInterest</Role>
      <ShortName>Net Income Per Limited Partner and General Partner Interest</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2105100 - Disclosure - Casper Terminal Acquisition</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CasperTerminalAcquisition</Role>
      <ShortName>Casper Terminal Acquisition</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2106100 - Disclosure - Restricted Cash</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/RestrictedCash</Role>
      <ShortName>Restricted Cash</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2107100 - Disclosure - Accounts Receivable (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://usdpartners.com/role/AccountsReceivableNotes</Role>
      <ShortName>Accounts Receivable (Notes)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2108100 - Disclosure - Property and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/PropertyAndEquipment</Role>
      <ShortName>Property and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2109100 - Disclosure - Goodwill and Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/GoodwillAndIntangibleAssets</Role>
      <ShortName>Goodwill and Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2110100 - Disclosure - Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/Debt</Role>
      <ShortName>Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2111100 - Disclosure - Deferred Revenue</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DeferredRevenue</Role>
      <ShortName>Deferred Revenue</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2112100 - Disclosure - Collaborative Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CollaborativeArrangements</Role>
      <ShortName>Collaborative Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2113100 - Disclosure - Transactions with Related Parties</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedParties</Role>
      <ShortName>Transactions with Related Parties</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2114100 - Disclosure - Partners' Capital</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/PartnersCapital</Role>
      <ShortName>Partners' Capital</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2115100 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2116100 - Disclosure - Segment Reporting</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SegmentReporting</Role>
      <ShortName>Segment Reporting</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2117100 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/IncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2118100 - Disclosure - Major Customers and Concentration of Credit Risk</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/MajorCustomersAndConcentrationOfCreditRisk</Role>
      <ShortName>Major Customers and Concentration of Credit Risk</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2119100 - Disclosure - Derivative Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DerivativeFinancialInstruments</Role>
      <ShortName>Derivative Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2120100 - Disclosure - Unit Based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/UnitBasedCompensation</Role>
      <ShortName>Unit Based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2121100 - Disclosure - Supplemental Cash Flow Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SupplementalCashFlowInformation</Role>
      <ShortName>Supplemental Cash Flow Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2122100 - Disclosure - Discontinued Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DiscontinuedOperations</Role>
      <ShortName>Discontinued Operations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2123100 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2124100 - Disclosure - Quarterly Financial Data (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/QuarterlyFinancialDataUnaudited</Role>
      <ShortName>Quarterly Financial Data (Unaudited)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2202201 - Disclosure - Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://usdpartners.com/role/SummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2301301 - Disclosure - Organization and Description of Business (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/OrganizationAndDescriptionOfBusinessTables</Role>
      <ShortName>Organization and Description of Business (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/OrganizationAndDescriptionOfBusiness</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2302302 - Disclosure - Summary of Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SummaryOfSignificantAccountingPoliciesTables</Role>
      <ShortName>Summary of Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/SummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2303301 - Disclosure - Net Income Per Limited Partner and General Partner Interest (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/NetIncomePerLimitedPartnerAndGeneralPartnerInterestTables</Role>
      <ShortName>Net Income Per Limited Partner and General Partner Interest (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/NetIncomePerLimitedPartnerAndGeneralPartnerInterest</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2305301 - Disclosure - Casper Terminal Acquisition (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CasperTerminalAcquisitionTables</Role>
      <ShortName>Casper Terminal Acquisition (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/CasperTerminalAcquisition</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2308301 - Disclosure - Property and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/PropertyAndEquipmentTables</Role>
      <ShortName>Property and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/PropertyAndEquipment</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>2309301 - Disclosure - Goodwill and Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/GoodwillAndIntangibleAssetsTables</Role>
      <ShortName>Goodwill and Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/GoodwillAndIntangibleAssets</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>2310301 - Disclosure - Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DebtTables</Role>
      <ShortName>Debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/Debt</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>2311301 - Disclosure - Deferred Revenue (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DeferredRevenueTables</Role>
      <ShortName>Deferred Revenue (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/DeferredRevenue</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>2313301 - Disclosure - Transactions with Related Parties (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesTables</Role>
      <ShortName>Transactions with Related Parties (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/TransactionsWithRelatedParties</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>2315301 - Disclosure - Commitments and Contingencies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CommitmentsAndContingenciesTables</Role>
      <ShortName>Commitments and Contingencies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/CommitmentsAndContingencies</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>2316301 - Disclosure - Segment Reporting (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SegmentReportingTables</Role>
      <ShortName>Segment Reporting (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/SegmentReporting</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>2317301 - Disclosure - Income Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/IncomeTaxesTables</Role>
      <ShortName>Income Taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/IncomeTaxes</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>2318301 - Disclosure - Major Customers and Concentration of Credit Risk (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/MajorCustomersAndConcentrationOfCreditRiskTables</Role>
      <ShortName>Major Customers and Concentration of Credit Risk (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/MajorCustomersAndConcentrationOfCreditRisk</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>2319301 - Disclosure - Derivative Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DerivativeFinancialInstrumentsTables</Role>
      <ShortName>Derivative Financial Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/DerivativeFinancialInstruments</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>2320301 - Disclosure - Unit Based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/UnitBasedCompensationTables</Role>
      <ShortName>Unit Based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/UnitBasedCompensation</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>2321301 - Disclosure - Supplemental Cash Flow Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SupplementalCashFlowInformationTables</Role>
      <ShortName>Supplemental Cash Flow Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/SupplementalCashFlowInformation</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>2322301 - Disclosure - Discontinued Operations (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DiscontinuedOperationsTables</Role>
      <ShortName>Discontinued Operations (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/DiscontinuedOperations</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>2323301 - Disclosure - Subsequent Events (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SubsequentEventsTables</Role>
      <ShortName>Subsequent Events (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/SubsequentEvents</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>2324301 - Disclosure - Quarterly Financial Data (Unaudited) (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/QuarterlyFinancialDataUnauditedTables</Role>
      <ShortName>Quarterly Financial Data (Unaudited) (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://usdpartners.com/role/QuarterlyFinancialDataUnaudited</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>2401402 - Disclosure - Organization and Description of Business - General (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/OrganizationAndDescriptionOfBusinessGeneralDetails</Role>
      <ShortName>Organization and Description of Business - General (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://usdpartners.com/role/OrganizationAndDescriptionOfBusinessTables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>2401403 - Disclosure - Organization and Description of Business - Initial Public Offering (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/OrganizationAndDescriptionOfBusinessInitialPublicOfferingDetails</Role>
      <ShortName>Organization and Description of Business - Initial Public Offering (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>2401404 - Disclosure - Organization and Description of Business - Acquisition (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/OrganizationAndDescriptionOfBusinessAcquisitionDetails</Role>
      <ShortName>Organization and Description of Business - Acquisition (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>2402403 - Disclosure - Summary of Significant Accounting Policies  - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SummaryOfSignificantAccountingPoliciesAdditionalInformationDetails</Role>
      <ShortName>Summary of Significant Accounting Policies  - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>2402404 - Disclosure - Summary of Significant Accounting Policies - Revision (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SummaryOfSignificantAccountingPoliciesRevisionDetails</Role>
      <ShortName>Summary of Significant Accounting Policies - Revision (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>2403402 - Disclosure - Net Income Per Limited Partner and General Partner Interest - Distributions to Limited and General Partners (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/NetIncomePerLimitedPartnerAndGeneralPartnerInterestDistributionsToLimitedAndGeneralPartnersDetails</Role>
      <ShortName>Net Income Per Limited Partner and General Partner Interest - Distributions to Limited and General Partners (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>2403403 - Disclosure - Net Income Per Limited Partner and General Partner Interest - Schedule of Earnings per Units by Class (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/NetIncomePerLimitedPartnerAndGeneralPartnerInterestScheduleOfEarningsPerUnitsByClassDetails</Role>
      <ShortName>Net Income Per Limited Partner and General Partner Interest - Schedule of Earnings per Units by Class (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>2405402 - Disclosure - Casper Terminal Acquisition - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CasperTerminalAcquisitionAdditionalInformationDetails</Role>
      <ShortName>Casper Terminal Acquisition - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>2405403 - Disclosure - Casper Terminal Acquisition - Purchase Price Allocation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CasperTerminalAcquisitionPurchasePriceAllocationDetails</Role>
      <ShortName>Casper Terminal Acquisition - Purchase Price Allocation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>2405404 - Disclosure - Casper Terminal Acquisition - Pro Forma Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CasperTerminalAcquisitionProFormaInformationDetails</Role>
      <ShortName>Casper Terminal Acquisition - Pro Forma Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>2406401 - Disclosure - Restricted Cash (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/RestrictedCashDetails</Role>
      <ShortName>Restricted Cash (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://usdpartners.com/role/RestrictedCash</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>2407401 - Disclosure - Accounts Receivable (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/AccountsReceivableDetails</Role>
      <ShortName>Accounts Receivable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://usdpartners.com/role/AccountsReceivableNotes</ParentRole>
      <Position>62</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>2408402 - Disclosure - Property and Equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/PropertyAndEquipmentDetails</Role>
      <ShortName>Property and Equipment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://usdpartners.com/role/PropertyAndEquipmentTables</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>2409402 - Disclosure - Goodwill and Intangible Assets  - Goodwill (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/GoodwillAndIntangibleAssetsGoodwillDetails</Role>
      <ShortName>Goodwill and Intangible Assets  - Goodwill (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>2409403 - Disclosure - Goodwill and Intangible Assets  - Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/GoodwillAndIntangibleAssetsIntangibleAssetsDetails</Role>
      <ShortName>Goodwill and Intangible Assets  - Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>2410402 - Disclosure - Debt - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DebtAdditionalInformationDetails</Role>
      <ShortName>Debt - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>2410403 - Disclosure - Debt - Capacity on Credit Facility (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DebtCapacityOnCreditFacilityDetails</Role>
      <ShortName>Debt - Capacity on Credit Facility (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>2410404 - Disclosure - Debt - Schedule of Interest Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DebtScheduleOfInterestExpenseDetails</Role>
      <ShortName>Debt - Schedule of Interest Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>2410405 - Disclosure - Debt - Composition of Long-term Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DebtCompositionOfLongTermDebtDetails</Role>
      <ShortName>Debt - Composition of Long-term Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>2411402 - Disclosure - Deferred Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DeferredRevenueDetails</Role>
      <ShortName>Deferred Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://usdpartners.com/role/DeferredRevenueTables</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>2412401 - Disclosure - Collaborative Arrangements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CollaborativeArrangementsDetails</Role>
      <ShortName>Collaborative Arrangements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://usdpartners.com/role/CollaborativeArrangements</ParentRole>
      <Position>71</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>2413402 - Disclosure - Transactions with Related Parties - Nature of Relationship (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesNatureOfRelationshipDetails</Role>
      <ShortName>Transactions with Related Parties - Nature of Relationship (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>2413403 - Disclosure - Transactions with Related Parties - Initial Public Offering Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesInitialPublicOfferingTransactionsDetails</Role>
      <ShortName>Transactions with Related Parties - Initial Public Offering Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>2413404 - Disclosure - Transactions with Related Parties - Omnibus Agreement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesOmnibusAgreementDetails</Role>
      <ShortName>Transactions with Related Parties - Omnibus Agreement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>2413405 - Disclosure - Transactions with Related Parties - Indemnification (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesIndemnificationDetails</Role>
      <ShortName>Transactions with Related Parties - Indemnification (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>2413406 - Disclosure - Transactions with Related Parties - Assignment of Costs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesAssignmentOfCostsDetails</Role>
      <ShortName>Transactions with Related Parties - Assignment of Costs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>2413407 - Disclosure - Transactions with Related Parties - Variable Interest Entities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesVariableInterestEntitiesDetails</Role>
      <ShortName>Transactions with Related Parties - Variable Interest Entities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>2413408 - Disclosure - Transactions with Related Parties - Related Party Revenue and Deferred Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesRelatedPartyRevenueAndDeferredRevenueDetails</Role>
      <ShortName>Transactions with Related Parties - Related Party Revenue and Deferred Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>2413409 - Disclosure - Transactions with Related Parties - Cost Allocations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesCostAllocationsDetails</Role>
      <ShortName>Transactions with Related Parties - Cost Allocations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>2413410 - Disclosure - Transactions with Related Parties - Loan from USDG (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesLoanFromUsdgDetails</Role>
      <ShortName>Transactions with Related Parties - Loan from USDG (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>2413411 - Disclosure - Transactions with Related Parties - Cash Distributions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesCashDistributionsDetails</Role>
      <ShortName>Transactions with Related Parties - Cash Distributions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>2413412 - Disclosure - Transactions with Related Parties - Transition Services Agreement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/TransactionsWithRelatedPartiesTransitionServicesAgreementDetails</Role>
      <ShortName>Transactions with Related Parties - Transition Services Agreement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>2414401 - Disclosure - Partners' Capital (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/PartnersCapitalDetails</Role>
      <ShortName>Partners' Capital (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://usdpartners.com/role/PartnersCapital</ParentRole>
      <Position>83</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>2415402 - Disclosure - Commitments and Contingencies - Railcar Operating Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CommitmentsAndContingenciesRailcarOperatingLeasesDetails</Role>
      <ShortName>Commitments and Contingencies - Railcar Operating Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>84</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>2415403 - Disclosure - Commitments and Contingencies - Rail Service Agreements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CommitmentsAndContingenciesRailServiceAgreementsDetails</Role>
      <ShortName>Commitments and Contingencies - Rail Service Agreements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>85</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>2415404 - Disclosure - Commitments and Contingencies - Operating Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CommitmentsAndContingenciesOperatingLeasesDetails</Role>
      <ShortName>Commitments and Contingencies - Operating Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>2415405 - Disclosure - Commitments and Contingencies - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/CommitmentsAndContingenciesAdditionalInformationDetails</Role>
      <ShortName>Commitments and Contingencies - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>87</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>2416402 - Disclosure - Segment Reporting - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SegmentReportingAdditionalInformationDetails</Role>
      <ShortName>Segment Reporting - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>88</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>2416403 - Disclosure - Segment Reporting - Reportable Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SegmentReportingReportableSegmentDetails</Role>
      <ShortName>Segment Reporting - Reportable Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>89</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>2416404 - Disclosure - Segment Reporting - Reconciliation of Adjusted EBITDA (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SegmentReportingReconciliationOfAdjustedEbitdaDetails</Role>
      <ShortName>Segment Reporting - Reconciliation of Adjusted EBITDA (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>90</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>2416405 - Disclosure - Segment Reporting - Revenue and Assets by Geographic Area (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SegmentReportingRevenueAndAssetsByGeographicAreaDetails</Role>
      <ShortName>Segment Reporting - Revenue and Assets by Geographic Area (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>91</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>2417402 - Disclosure - Income Taxes - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/IncomeTaxesAdditionalInformationDetails</Role>
      <ShortName>Income Taxes - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>92</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>2417403 - Disclosure - Income Taxes - Schedule of Components of Income Tax and Effective Tax Reconciliation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/IncomeTaxesScheduleOfComponentsOfIncomeTaxAndEffectiveTaxReconciliationDetails</Role>
      <ShortName>Income Taxes - Schedule of Components of Income Tax and Effective Tax Reconciliation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>93</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>2417404 - Disclosure - Income Taxes - Schedule of Deferred Tax Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/IncomeTaxesScheduleOfDeferredTaxAssetsDetails</Role>
      <ShortName>Income Taxes - Schedule of Deferred Tax Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>94</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>2417405 - Disclosure - - Schedule of Income (Loss) before Income Taxes and Reconciliation Between Interest Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/ScheduleOfIncomeLossBeforeIncomeTaxesAndReconciliationBetweenInterestExpenseDetails</Role>
      <ShortName>- Schedule of Income (Loss) before Income Taxes and Reconciliation Between Interest Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>95</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>2418402 - Disclosure - Major Customers and Concentration of Credit Risk (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/MajorCustomersAndConcentrationOfCreditRiskDetails</Role>
      <ShortName>Major Customers and Concentration of Credit Risk (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://usdpartners.com/role/MajorCustomersAndConcentrationOfCreditRiskTables</ParentRole>
      <Position>96</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>2419402 - Disclosure - Derivative Financial Instruments - Balance Sheet (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DerivativeFinancialInstrumentsBalanceSheetDetails</Role>
      <ShortName>Derivative Financial Instruments - Balance Sheet (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>97</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>2419403 - Disclosure - Derivative Financial Instruments - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DerivativeFinancialInstrumentsAdditionalInformationDetails</Role>
      <ShortName>Derivative Financial Instruments - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>98</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>2419404 - Disclosure - Derivative Financial Instruments - Gain (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DerivativeFinancialInstrumentsGainDetails</Role>
      <ShortName>Derivative Financial Instruments - Gain (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://usdpartners.com/role/DerivativeFinancialInstrumentsTables</ParentRole>
      <Position>99</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>2419405 - Disclosure - Derivative Financial Instruments - Foreign Currency Contract (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DerivativeFinancialInstrumentsForeignCurrencyContractDetails</Role>
      <ShortName>Derivative Financial Instruments - Foreign Currency Contract (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>100</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R101.htm</HtmlFileName>
      <LongName>2419406 - Disclosure - Derivative Financial Instruments - Fair Value (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DerivativeFinancialInstrumentsFairValueDetails</Role>
      <ShortName>Derivative Financial Instruments - Fair Value (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>101</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R102.htm</HtmlFileName>
      <LongName>2420402 - Disclosure - Unit Based Compensation - Class A Units (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/UnitBasedCompensationClassUnitsDetails</Role>
      <ShortName>Unit Based Compensation - Class A Units (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>102</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>2420403 - Disclosure - Unit Based Compensation - Long-term Incentive Plan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/UnitBasedCompensationLongTermIncentivePlanDetails</Role>
      <ShortName>Unit Based Compensation - Long-term Incentive Plan (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>103</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>2421402 - Disclosure - Supplemental Cash Flow Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SupplementalCashFlowInformationDetails</Role>
      <ShortName>Supplemental Cash Flow Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://usdpartners.com/role/SupplementalCashFlowInformationTables</ParentRole>
      <Position>104</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R105.htm</HtmlFileName>
      <LongName>2422402 - Disclosure - Discontinued Operations - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DiscontinuedOperationsAdditionalInformationDetails</Role>
      <ShortName>Discontinued Operations - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>105</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>2422403 - Disclosure - Discontinued Operations - Summary of Operating Results from Discontinued Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/DiscontinuedOperationsSummaryOfOperatingResultsFromDiscontinuedOperationsDetails</Role>
      <ShortName>Discontinued Operations - Summary of Operating Results from Discontinued Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>106</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>2423402 - Disclosure - Subsequent Events - Distribution to Partners (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SubsequentEventsDistributionToPartnersDetails</Role>
      <ShortName>Subsequent Events - Distribution to Partners (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>107</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R108.htm</HtmlFileName>
      <LongName>2423403 - Disclosure - Subsequent Events - Long-term Incentive Plan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SubsequentEventsLongTermIncentivePlanDetails</Role>
      <ShortName>Subsequent Events - Long-term Incentive Plan (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>108</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R109.htm</HtmlFileName>
      <LongName>2423404 - Disclosure - Subsequent Events - Class A Units (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SubsequentEventsClassUnitsDetails</Role>
      <ShortName>Subsequent Events - Class A Units (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>109</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R110.htm</HtmlFileName>
      <LongName>2423405 - Disclosure - Subsequent Events - Subordinated Units (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SubsequentEventsSubordinatedUnitsDetails</Role>
      <ShortName>Subsequent Events - Subordinated Units (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>110</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R111.htm</HtmlFileName>
      <LongName>2423406 - Disclosure - Subsequent Events - Revolving Credit Facility (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/SubsequentEventsRevolvingCreditFacilityDetails</Role>
      <ShortName>Subsequent Events - Revolving Credit Facility (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>111</Position>
    </Report>
    <Report instance="usdp-20151231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R112.htm</HtmlFileName>
      <LongName>2424402 - Disclosure - Quarterly Financial Data (Unaudited) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://usdpartners.com/role/QuarterlyFinancialDataUnauditedDetails</Role>
      <ShortName>Quarterly Financial Data (Unaudited) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://usdpartners.com/role/QuarterlyFinancialDataUnauditedTables</ParentRole>
      <Position>112</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>usdp-20151231.xml</File>
    <File>usdp-20151231.xsd</File>
    <File>usdp-20151231_cal.xml</File>
    <File>usdp-20151231_def.xml</File>
    <File>usdp-20151231_lab.xml</File>
    <File>usdp-20151231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies/>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
