XML 82 R62.htm IDEA: XBRL DOCUMENT
v3.8.0.1

RISK MANAGEMENT AND USE OF FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Derivative financial instruments |  |
Unrealized losses reclassified from accumulated other comprehensive loss | $ 1,700 |
Amount estimated to be reclassified as an increase to interest expense | 400 |
Designated | Cash flow |  |
Derivative financial instruments |  |
Notional Amount | 100,000 | $ 300,000
Fair Value | $ (406) | (2,280)
Maximum number of days outstanding to have the option to borrow at the LIBOR | 30 days |
Designated | Cash flow | Hedge Product, Swap four |  |
Derivative financial instruments |  |
Notional Amount |  | $ 75,000
Swap, Strike rate (as a percent) |  | 1.336%
Fair Value |  | $ (103)
Designated | Cash flow | Hedge Product, Swap five |  |
Derivative financial instruments |  |
Notional Amount |  | $ 50,000
Swap, Strike rate (as a percent) |  | 1.336%
Fair Value |  | $ (69)
Designated | Cash flow | Hedge Product, Swap six |  |
Derivative financial instruments |  |
Notional Amount |  | $ 50,000
Swap, Strike rate (as a percent) |  | 1.336%
Fair Value |  | $ (69)
Designated | Cash flow | Hedge Product, Swap seven |  |
Derivative financial instruments |  |
Notional Amount |  | $ 25,000
Swap, Strike rate (as a percent) |  | 1.3375%
Fair Value |  | $ (34)
Designated | Cash flow | Hedge Product, Swap eight |  |
Derivative financial instruments |  |
Notional Amount | $ 40,000 | $ 40,000
Swap, Strike rate (as a percent) |  | 2.459%
Fair Value | (161) | $ (797)
Designated | Cash flow | Hedge Product, Swap nine |  |
Derivative financial instruments |  |
Notional Amount | 40,000 | $ 40,000
Swap, Strike rate (as a percent) |  | 2.4725%
Fair Value | (163) | $ (804)
Designated | Cash flow | Hedge Product, Swap ten |  |
Derivative financial instruments |  |
Notional Amount | 20,000 | $ 20,000
Swap, Strike rate (as a percent) |  | 2.475%
Fair Value | $ (82) | $ (404)

X
- Definition Represents the maximum number of days that borrowings may be outstanding in order for the entity to have the option to borrow at the prime rate of interest. + References No definition available. + Details
Name: | cube_DebtInstrumentInterestRatePrimeMaximumNumberOfDaysOutstanding
Namespace Prefix: | cube_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=64830801&loc=SL51823488-111719 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The effective portion of loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
Name: | us-gaap_DerivativeInstrumentsLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortion
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=cube_InterestRateSwapFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=cube_InterestRateSwapFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=cube_InterestRateSwapSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=cube_InterestRateSwapSevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=cube_InterestRateSwapEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=cube_InterestRateSwapNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=cube_InterestRateSwapTenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |