RELATED PARTY TRANSACTIONS (Details) (USD $) In Thousands, except Share data, unless otherwise specified
|
0 Months Ended |
1 Months Ended |
3 Months Ended |
2 Months Ended |
12 Months Ended |
0 Months Ended |
|
Jan. 01, 2015
property
|
Jan. 31, 2015
property
|
Mar. 31, 2015
property
|
Mar. 31, 2014
|
May 31, 2015
property
|
Dec. 31, 2014
property
|
Apr. 01, 2015
|
Jul. 01, 2014
|
Related Party Transaction [Line Items] |
|
|
|
|
|
|
|
|
Property operating expenses |
|
|
$ 9,842us-gaap_CostOfRealEstateRevenue
|
$ 4,922us-gaap_CostOfRealEstateRevenue
|
|
|
|
|
General and administrative expenses |
|
|
3,613us-gaap_GeneralAndAdministrativeExpense
|
1,338us-gaap_GeneralAndAdministrativeExpense
|
|
|
|
|
Note receivable from PRO |
|
|
0us-gaap_NotesReceivableRelatedParties
|
|
|
1,778us-gaap_NotesReceivableRelatedParties
|
|
|
Loan receivable settled in self storage property acquisition |
|
|
1,778nsa_BusinessCombinationConsiderationTransferredNotesReceivable
|
|
|
|
|
|
Number of self storage properties acquired |
5us-gaap_NumberOfBusinessesAcquired
|
6us-gaap_NumberOfBusinessesAcquired
|
6us-gaap_NumberOfBusinessesAcquired
|
|
|
|
|
|
Subsequent Event [Member] |
|
|
|
|
|
|
|
|
Related Party Transaction [Line Items] |
|
|
|
|
|
|
|
|
Number of self storage properties acquired |
|
|
|
|
21us-gaap_NumberOfBusinessesAcquired / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
|
|
|
|
Participating Regional Operator [Member] | Management [Member] |
|
|
|
|
|
|
|
|
Related Party Transaction [Line Items] |
|
|
|
|
|
|
|
|
Note receivable from PRO |
|
|
|
|
|
|
|
8,000us-gaap_NotesReceivableRelatedParties / us-gaap_CounterpartyNameAxis = nsa_ParticipatingRegionalOperatorMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ManagementMember
|
Loan receivable settled in self storage property acquisition |
|
|
|
|
|
6,200nsa_BusinessCombinationConsiderationTransferredNotesReceivable / us-gaap_CounterpartyNameAxis = nsa_ParticipatingRegionalOperatorMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ManagementMember
|
|
|
Number of self storage properties acquired |
|
2us-gaap_NumberOfBusinessesAcquired / us-gaap_CounterpartyNameAxis = nsa_ParticipatingRegionalOperatorMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ManagementMember
|
|
|
|
13us-gaap_NumberOfBusinessesAcquired / us-gaap_CounterpartyNameAxis = nsa_ParticipatingRegionalOperatorMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ManagementMember
|
|
|
Supervisory and Administrative Fee Agreement [Member] | Participating Regional Operator [Member] | Management [Member] |
|
|
|
|
|
|
|
|
Related Party Transaction [Line Items] |
|
|
|
|
|
|
|
|
General and administrative expenses |
|
|
1,600us-gaap_GeneralAndAdministrativeExpense / us-gaap_CounterpartyNameAxis = nsa_ParticipatingRegionalOperatorMember / us-gaap_RelatedPartyTransactionAxis = nsa_SupervisoryandAdministrativeFeeAgreementMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ManagementMember
|
800us-gaap_GeneralAndAdministrativeExpense / us-gaap_CounterpartyNameAxis = nsa_ParticipatingRegionalOperatorMember / us-gaap_RelatedPartyTransactionAxis = nsa_SupervisoryandAdministrativeFeeAgreementMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ManagementMember
|
|
|
|
|
Supervisory and Administrative Fee Agreement [Member] | Participating Regional Operator [Member] | Minimum [Member] | Management [Member] |
|
|
|
|
|
|
|
|
Related Party Transaction [Line Items] |
|
|
|
|
|
|
|
|
Fee agreement on gross revenue, percent |
|
|
5.00%nsa_RelatedPartyTransactionManagementAgreementPercentOfRevenue / us-gaap_CounterpartyNameAxis = nsa_ParticipatingRegionalOperatorMember / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_RelatedPartyTransactionAxis = nsa_SupervisoryandAdministrativeFeeAgreementMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ManagementMember
|
|
|
|
|
|
Supervisory and Administrative Fee Agreement [Member] | Participating Regional Operator [Member] | Maximum [Member] | Management [Member] |
|
|
|
|
|
|
|
|
Related Party Transaction [Line Items] |
|
|
|
|
|
|
|
|
Fee agreement on gross revenue, percent |
|
|
6.00%nsa_RelatedPartyTransactionManagementAgreementPercentOfRevenue / us-gaap_CounterpartyNameAxis = nsa_ParticipatingRegionalOperatorMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RelatedPartyTransactionAxis = nsa_SupervisoryandAdministrativeFeeAgreementMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ManagementMember
|
|
|
|
|
|
Payroll Services [Member] | Participating Regional Operator [Member] | Management [Member] |
|
|
|
|
|
|
|
|
Related Party Transaction [Line Items] |
|
|
|
|
|
|
|
|
Property operating expenses |
|
|
2,900us-gaap_CostOfRealEstateRevenue / us-gaap_CounterpartyNameAxis = nsa_ParticipatingRegionalOperatorMember / us-gaap_RelatedPartyTransactionAxis = nsa_PayrollServicesMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ManagementMember
|
1,500us-gaap_CostOfRealEstateRevenue / us-gaap_CounterpartyNameAxis = nsa_ParticipatingRegionalOperatorMember / us-gaap_RelatedPartyTransactionAxis = nsa_PayrollServicesMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ManagementMember
|
|
|
|
|
Call Center Services [Member] | SecuCare Self Storage Inc. [Member] | Affiliated Entity [Member] |
|
|
|
|
|
|
|
|
Related Party Transaction [Line Items] |
|
|
|
|
|
|
|
|
Property operating expenses |
|
|
200us-gaap_CostOfRealEstateRevenue / us-gaap_CounterpartyNameAxis = nsa_SecuCareSelfStorageInc.Member / us-gaap_RelatedPartyTransactionAxis = nsa_CallCenterServicesMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember
|
100us-gaap_CostOfRealEstateRevenue / us-gaap_CounterpartyNameAxis = nsa_SecuCareSelfStorageInc.Member / us-gaap_RelatedPartyTransactionAxis = nsa_CallCenterServicesMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember
|
|
|
|
|
Area occupied by related party |
|
|
1,500us-gaap_AreaOfRealEstateProperty / us-gaap_CounterpartyNameAxis = nsa_SecuCareSelfStorageInc.Member / us-gaap_RelatedPartyTransactionAxis = nsa_CallCenterServicesMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember
|
|
|
|
|
|
Annual rent |
|
|
25nsa_LessorLeasingArrangementsOperatingLeasesTermOfContractAnnualizedBaseRent / us-gaap_CounterpartyNameAxis = nsa_SecuCareSelfStorageInc.Member / us-gaap_RelatedPartyTransactionAxis = nsa_CallCenterServicesMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember
|
|
|
|
|
|
Call Center [Member] | Call Center Services [Member] | SecuCare Self Storage Inc. [Member] | Affiliated Entity [Member] | Subsequent Event [Member] |
|
|
|
|
|
|
|
|
Related Party Transaction [Line Items] |
|
|
|
|
|
|
|
|
Issuance of OP units and subordinated performance units for acquisition of call center |
|
|
|
|
|
|
50,000nsa_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationUnitsIssued / us-gaap_CounterpartyNameAxis = nsa_SecuCareSelfStorageInc.Member / us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis = nsa_CallCenterMember / us-gaap_RelatedPartyTransactionAxis = nsa_CallCenterServicesMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
|
|
Other assets, net [Member] | Participating Regional Operator [Member] | Management [Member] |
|
|
|
|
|
|
|
|
Related Party Transaction [Line Items] |
|
|
|
|
|
|
|
|
Note receivable from PRO |
|
|
|
|
|
$ 1,800us-gaap_NotesReceivableRelatedParties / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherAssetsMember / us-gaap_CounterpartyNameAxis = nsa_ParticipatingRegionalOperatorMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ManagementMember
|
|
|