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      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>40302 - Disclosure - STORAGE FACILITIES (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureStorageFacilitiesDetails2</Role>
      <ShortName>STORAGE FACILITIES (Details 2)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>40401 - Disclosure - INVESTMENT ACTIVITY (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureInvestmentActivityDetails</Role>
      <ShortName>INVESTMENT ACTIVITY (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>40501 - Disclosure - INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureInvestmentInUnconsolidatedRealEstateVentureDetails</Role>
      <ShortName>INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURE (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>40601 - Disclosure - UNSECURED SENIOR NOTES (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureUnsecuredSeniorNotesDetails</Role>
      <ShortName>UNSECURED SENIOR NOTES (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>40701 - Disclosure - REVOLVING CREDIT FACILITY AND UNSECURED TERM LOANS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureRevolvingCreditFacilityAndUnsecuredTermLoansDetails</Role>
      <ShortName>REVOLVING CREDIT FACILITY AND UNSECURED TERM LOANS (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>40801 - Disclosure - MORTGAGE LOANS AND NOTES PAYABLE (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureMortgageLoansAndNotesPayableDetails</Role>
      <ShortName>MORTGAGE LOANS AND NOTES PAYABLE (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>40802 - Disclosure - MORTGAGE LOANS AND NOTES PAYABLE (Details 2)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureMortgageLoansAndNotesPayableDetails2</Role>
      <ShortName>MORTGAGE LOANS AND NOTES PAYABLE (Details 2)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>40901 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureAccumulatedOtherComprehensiveLossDetails</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>41001 - Disclosure - RISK MANAGEMENT AND USE OF FINANCIAL INSTRUMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureRiskManagementAndUseOfFinancialInstrumentsDetails</Role>
      <ShortName>RISK MANAGEMENT AND USE OF FINANCIAL INSTRUMENTS (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>41101 - Disclosure - FAIR VALUE MEASUREMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureFairValueMeasurementsDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>41201 - Disclosure - NONCONTROLLING INTERESTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureNoncontrollingInterestsDetails</Role>
      <ShortName>NONCONTROLLING INTERESTS (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>41202 - Disclosure - NONCONTROLLING INTERESTS (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureNoncontrollingInterestsDetails2</Role>
      <ShortName>NONCONTROLLING INTERESTS (Details 2)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>41301 - Disclosure - RELATED PARTY TRANSACTIONS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureRelatedPartyTransactionsDetails</Role>
      <ShortName>RELATED PARTY TRANSACTIONS (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>41401 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureCommitmentsAndContingenciesDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>41501 - Disclosure - SHARE-BASED COMPENSATION PLANS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureShareBasedCompensationPlansDetails</Role>
      <ShortName>SHARE-BASED COMPENSATION PLANS (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>41601 - Disclosure - EARNINGS PER SHARE AND UNIT AND SHAREHOLDERS' EQUITY AND CAPITAL (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureEarningsPerShareAndUnitAndShareholdersEquityAndCapitalDetails</Role>
      <ShortName>EARNINGS PER SHARE AND UNIT AND SHAREHOLDERS' EQUITY AND CAPITAL (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>41602 - Disclosure - EARNINGS PER SHARE AND UNIT AND SHAREHOLDERS' EQUITY AND CAPITAL (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureEarningsPerShareAndUnitAndShareholdersEquityAndCapitalDetails2</Role>
      <ShortName>EARNINGS PER SHARE AND UNIT AND SHAREHOLDERS' EQUITY AND CAPITAL (Details 2)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>41701 - Disclosure - INCOME TAXES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureIncomeTaxesDetails</Role>
      <ShortName>INCOME TAXES (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>41801 - Disclosure - DISCONTINUED OPERATIONS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureDiscontinuedOperationsDetails</Role>
      <ShortName>DISCONTINUED OPERATIONS (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>41901 - Disclosure - PRO FORMA FINANCIAL INFORMATION (UNAUDITED) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureProFormaFinancialInformationUnauditedDetails</Role>
      <ShortName>PRO FORMA FINANCIAL INFORMATION (UNAUDITED) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>42001 - Disclosure - SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureSelectedQuarterlyFinancialDataUnauditedDetails</Role>
      <ShortName>SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>42101 - Disclosure - SCHEDULE III REAL ESTATE AND RELATED DEPRECIATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureScheduleIiiRealEstateAndRelatedDepreciationDetails</Role>
      <ShortName>SCHEDULE III REAL ESTATE AND RELATED DEPRECIATION (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>42102 - Disclosure - SCHEDULE III REAL ESTATE AND RELATED DEPRECIATION (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/DisclosureScheduleIiiRealEstateAndRelatedDepreciationDetails2</Role>
      <ShortName>SCHEDULE III REAL ESTATE AND RELATED DEPRECIATION (Details 2)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>50100 - Statement - CONSOLIDATED BALANCE SHEETS (LP cube)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/StatementConsolidatedBalanceSheetsLpCube</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (LP cube)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>50150 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) (LP cube)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/StatementConsolidatedBalanceSheetsParentheticalLpCube</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical) (LP cube)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>50200 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS (LP cube)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/StatementConsolidatedStatementsOfOperationsLpCube</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF OPERATIONS (LP cube)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>50300 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (LP cube)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/StatementConsolidatedStatementsOfComprehensiveIncomeLossLpCube</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (LP cube)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>50400 - Statement - CONSOLIDATED STATEMENTS OF CAPITAL (LP cube)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/StatementConsolidatedStatementsOfCapitalLpCube</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CAPITAL (LP cube)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>50500 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (LP cube)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cubesmart.com/role/StatementConsolidatedStatementsOfCashFlowsLpCube</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS (LP cube)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Info">Element us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain had a mix of decimals attribute values: -5 -3.</Log>
    <Log type="Info">Element us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 had a mix of decimals attribute values: 0 4.</Log>
    <Log type="Info">Element us-gaap_GainLossOnSaleOfProperties had a mix of decimals attribute values: -5 -3.</Log>
    <Log type="Info">Element us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance had a mix of decimals attribute values: -5 -3.</Log>
    <Log type="Info">Element us-gaap_PaymentsToAcquireEquityMethodInvestments had a mix of decimals attribute values: -5 -3.</Log>
    <Log type="Info">Element us-gaap_RealEstateInvestmentPropertyNet had a mix of decimals attribute values: -6 -3.</Log>
    <Log type="Info">'Monetary' elements on report '40202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '40204 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 4)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '40401 - Disclosure - INVESTMENT ACTIVITY (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '40501 - Disclosure - INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURE (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '40701 - Disclosure - REVOLVING CREDIT FACILITY AND UNSECURED TERM LOANS (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '40802 - Disclosure - MORTGAGE LOANS AND NOTES PAYABLE (Details 2)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '41001 - Disclosure - RISK MANAGEMENT AND USE OF FINANCIAL INSTRUMENTS (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '41101 - Disclosure - FAIR VALUE MEASUREMENTS (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '41201 - Disclosure - NONCONTROLLING INTERESTS (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '41301 - Disclosure - RELATED PARTY TRANSACTIONS (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '41401 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Shares' elements on report '41601 - Disclosure - EARNINGS PER SHARE AND UNIT AND SHAREHOLDERS' EQUITY AND CAPITAL (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '41602 - Disclosure - EARNINGS PER SHARE AND UNIT AND SHAREHOLDERS' EQUITY AND CAPITAL (Details 2)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">Process Flow-Through: 00100 - Statement - CONSOLIDATED BALANCE SHEETS</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2011'</Log>
    <Log type="Info">Process Flow-Through: 00105 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2012'</Log>
    <Log type="Info">Process Flow-Through: 00200 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Dec. 31, 2014'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Sep. 30, 2014'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Jun. 30, 2014'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Mar. 31, 2014'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Dec. 31, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Sep. 30, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Jun. 30, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Mar. 31, 2013'</Log>
    <Log type="Info">Process Flow-Through: 00300 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)</Log>
    <Log type="Info">Process Flow-Through: 00500 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</Log>
    <Log type="Info">Process Flow-Through: 50100 - Statement - CONSOLIDATED BALANCE SHEETS (LP cube)</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2011'</Log>
    <Log type="Info">Process Flow-Through: 50150 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) (LP cube)</Log>
    <Log type="Info">Process Flow-Through: 50200 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS (LP cube)</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Dec. 31, 2014'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Sep. 30, 2014'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Jun. 30, 2014'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Mar. 31, 2014'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Dec. 31, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Sep. 30, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Jun. 30, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Mar. 31, 2013'</Log>
    <Log type="Info">Process Flow-Through: 50300 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (LP cube)</Log>
    <Log type="Info">Process Flow-Through: 50400 - Statement - CONSOLIDATED STATEMENTS OF CAPITAL (LP cube)</Log>
    <Log type="Info">Process Flow-Through: 50500 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (LP cube)</Log>
  </Logs>
  <InputFiles>
    <File>cube-20141231.xml</File>
    <File>cube-20141231.xsd</File>
    <File>cube-20141231_cal.xml</File>
    <File>cube-20141231_def.xml</File>
    <File>cube-20141231_lab.xml</File>
    <File>cube-20141231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
