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NONCONTROLLING INTERESTS - Narrative (Details)
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Mar. 31, 2015
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Dec. 31, 2014
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| NSA OP, LP [Member] | ||
| Noncontrolling Interest [Line Items] | ||
| Investment in company, percent, less than |
1.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / dei_LegalEntityAxis = nsa_NSAOPLPMember |
1.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / dei_LegalEntityAxis = nsa_NSAOPLPMember |
| NSA OP, LP [Member] | OP units [Member] | National Storage Affiliates Holdings LLC [Member] | ||
| Noncontrolling Interest [Line Items] | ||
| Shares owned by NSA Holdings (in shares) |
126,400us-gaap_InvestmentOwnedBalanceShares / us-gaap_InvestmentTypeAxis = nsa_ClassAUnitsMember / dei_LegalEntityAxis = nsa_NationalStorageAffiliatesHoldingsLLCMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = nsa_NSAOPLPMember |
126,400us-gaap_InvestmentOwnedBalanceShares / us-gaap_InvestmentTypeAxis = nsa_ClassAUnitsMember / dei_LegalEntityAxis = nsa_NationalStorageAffiliatesHoldingsLLCMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = nsa_NSAOPLPMember |
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- Definition
Balance held at close of period in number of shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. No definition available.
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- Details
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- Details
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