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MORTGAGE LOANS AND NOTES PAYABLE (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Mortgage loans and Notes payable |  |
Carrying value | $ 192,367us-gaap_DebtInstrumentCarryingAmount |
Unamortized fair value adjustment | 3,484cube_DebtInstrumentUnamortizedFairValueAdjustment | 3,674cube_DebtInstrumentUnamortizedFairValueAdjustment
Total mortgage loans and notes payable | 195,851us-gaap_NotesAndLoansPayable | 200,218us-gaap_NotesAndLoansPayable
Net book value of self-storage facilities | 2,625,129us-gaap_RealEstateInvestmentPropertyNet | 2,155,170us-gaap_RealEstateInvestmentPropertyNet
YSI 10 |  |
Mortgage loans and Notes payable |  |
Carrying value |  | 3,839us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI10LoanMember
Effective interest rate (as a percent) | 5.87%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI10LoanMember |
YSI 15 |  |
Mortgage loans and Notes payable |  |
Carrying value |  | 1,733us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI15LoanMember
Effective interest rate (as a percent) | 6.41%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI15LoanMember |
YSI 52 |  |
Mortgage loans and Notes payable |  |
Carrying value |  | 4,548us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI52LoanMember
Effective interest rate (as a percent) | 5.63%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI52LoanMember |
YSI 58 |  |
Mortgage loans and Notes payable |  |
Carrying value |  | 8,676us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI58LoanMember
Effective interest rate (as a percent) | 2.97%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI58LoanMember |
YSI 29 |  |
Mortgage loans and Notes payable |  |
Carrying value | 12,635us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI29LoanMember | 12,853us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI29LoanMember
Effective interest rate (as a percent) | 3.69%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI29LoanMember |
YSI 13 |  |
Mortgage loans and Notes payable |  |
Carrying value | 8,427us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI13LoanMember | 8,500us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI13LoanMember
Effective interest rate (as a percent) | 3.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI13LoanMember |
YSI 20 |  |
Mortgage loans and Notes payable |  |
Carrying value | 54,091us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI20LoanMember | 56,373us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI20LoanMember
Effective interest rate (as a percent) | 5.97%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI20LoanMember |
YSI 63 |  |
Mortgage loans and Notes payable |  |
Carrying value | 7,466us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI63LoanMember |
Effective interest rate (as a percent) | 2.82%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI63LoanMember |
YSI 59 |  |
Mortgage loans and Notes payable |  |
Carrying value | 9,221us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI59LoanMember | 9,418us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI59LoanMember
Effective interest rate (as a percent) | 4.82%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI59LoanMember |
YSI 60 |  |
Mortgage loans and Notes payable |  |
Carrying value | 3,610us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI60LoanMember | 3,670us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI60LoanMember
Effective interest rate (as a percent) | 5.04%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI60LoanMember |
YSI 51 |  |
Mortgage loans and Notes payable |  |
Carrying value | 7,105us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI51LoanMember | 7,219us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI51LoanMember
Effective interest rate (as a percent) | 5.15%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI51LoanMember |
YSI 64 |  |
Mortgage loans and Notes payable |  |
Carrying value | 7,919us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI64LoanMember |
Effective interest rate (as a percent) | 3.54%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI64LoanMember |
YSI 62 |  |
Mortgage loans and Notes payable |  |
Carrying value | 7,962us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI62LoanMember |
Effective interest rate (as a percent) | 3.54%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI62LoanMember |
YSI 35 |  |
Mortgage loans and Notes payable |  |
Carrying value |  | 4,274us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI35LoanMember
Effective interest rate (as a percent) | 6.90%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI35LoanMember |
YSI 33 |  |
Mortgage loans and Notes payable |  |
Carrying value | 10,429us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI33LoanMember | 10,688us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI33LoanMember
Effective interest rate (as a percent) | 6.42%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI33LoanMember |
YSI 26 |  |
Mortgage loans and Notes payable |  |
Carrying value | 8,780us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI26LoanMember | 8,945us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI26LoanMember
Effective interest rate (as a percent) | 4.56%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI26LoanMember |
YSI 57 |  |
Mortgage loans and Notes payable |  |
Carrying value | 3,082us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI57LoanMember | 3,140us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI57LoanMember
Effective interest rate (as a percent) | 4.61%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI57LoanMember |
YSI 55 |  |
Mortgage loans and Notes payable |  |
Carrying value | 23,767us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI55LoanMember | 24,145us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI55LoanMember
Effective interest rate (as a percent) | 4.85%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI55LoanMember |
YSI 24 |  |
Mortgage loans and Notes payable |  |
Carrying value | 27,873us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI24LoanMember | 28,523us-gaap_DebtInstrumentCarryingAmount / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI24LoanMember
Effective interest rate (as a percent) | 4.64%us-gaap_DebtInstrumentInterestRateEffectivePercentage / cube_MortgageLoansOnRealEstateByPortfolioAxis = cube_YSI24LoanMember |
Mortgage Loans |  |
Mortgage loans and Notes payable |  |
Net book value of self-storage facilities | $ 344,000us-gaap_RealEstateInvestmentPropertyNet / cube_MortgageLoansOnRealEstateByPortfolioAxis = us-gaap_MortgageLoansOnRealEstateMember | $ 371,000us-gaap_RealEstateInvestmentPropertyNet / cube_MortgageLoansOnRealEstateByPortfolioAxis = us-gaap_MortgageLoansOnRealEstateMember

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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of all notes and loans payable (with maturities initially due after one year or beyond the operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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