NSA


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostOfRevenue
us-gaap:CounterpartyName, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:CostsAndExpenses

us-gaap:GeneralAndAdministrativeExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestExpense
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NonoperatingIncomeExpense
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:PreferredStockDividendsIncomeStatementImpact

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
us-gaap:ProductOrService
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:Revenues
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:StockholdersEquity

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:Land
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssets
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:MinorityInterest

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
nsa:LeaseArrangements
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
nsa:LeaseArrangements
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour
nsa:LeaseArrangements
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive
nsa:LeaseArrangements

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
nsa:LeaseArrangements

us-gaap:OperatingLeaseLiability
nsa:LeaseArrangements
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue
nsa:LeaseArrangements
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
nsa:LeaseArrangements
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:MinorityInterest
us-gaap:StatementClassOfStock
us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:AmortizationOfFinancingCosts

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividendsCommonStock
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentInterestRateStatedPercentage

nsa:AssetAcquisitionAssetsAcquiredandLiabilitiesAssumedNet
nsa:AssetAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:AssetAcquisitionCapitalizedAcquisitionCosts

nsa:AssetAcquisitionConsiderationTransferred
us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:SubsequentEventType

nsa:AssetAcquisitionsEquityInterestsIssuedAndIssuableValue
us-gaap:CounterpartyName, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:SubsequentEventType

nsa:AssetAcquisitionsLiabilitiesAndOtherConsideration
us-gaap:SubsequentEventType

nsa:DeprecationDepletionAndAmortizationExcludingFinancingCostsAndDiscounts
us-gaap:StatementEquityComponents
nsa:EffectOfChangesInOwnershipForConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
nsa:FairValueAssumptionsWeightedAverageContractualInterestRate
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
nsa:FairValueAssumptionsWeightedAverageMarketInterestRate
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInEarningsCashFlowHedgeIneffectiveness
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInEarningsReclassificationFromAOCICurrentPeriod
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInOtherComprehensiveIncomeLoss

nsa:IncreaseDecreaseInDeferredRevenueLeasesAndContractWithCustomer

nsa:IncrementalCommonSharesAttributableToDilutiveEffectOfOPUnitsOutstanding

nsa:IncrementalCommonSharesAttributableToDilutiveEffectOfSubordinatedPerformanceUnitsAndDownREITSubordinatedPerformanceUnitEquivalents

nsa:NoncontrollingInterestIncreaseFromInvestorsUponFormationOfQualifyingREIT
us-gaap:StatementEquityComponents

nsa:PaymentsForAssetAcquisitions
us-gaap:SubsequentEventType

nsa:RedemptionAndConversionOfPartnershipInterests

nsa:ReductionInReceivablesFromPartnership
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock
nsa:SaleOfStockAveragePricePerShare
us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock

nsa:StockIssuedDuringPeriodValueRestrictedStockAwardVestingAndForfeited
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition
us-gaap:StatementEquityComponents

us-gaap:AmortizationOfDebtDiscountPremium

us-gaap:AssetAcquisitionConsiderationTransferred
us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType
us-gaap:SubsequentEventType

us-gaap:AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable
us-gaap:CounterpartyName, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType
us-gaap:SubsequentEventType

us-gaap:BusinessCombinationAcquisitionRelatedCosts
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DepreciationAndAmortization
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DepreciationNonproduction

us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther

us-gaap:DistributionMadeToLimitedPartnerCashDistributionsPaid

us-gaap:DividendsCommonStock
us-gaap:StatementEquityComponents

us-gaap:DividendsPreferredStock
us-gaap:StatementEquityComponents

us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:EquitySecuritiesFvNiGainLoss
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FinitelivedIntangibleAssetsAcquired1

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncrementalCommonSharesAttributableToEquityForwardAgreements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:StatementEquityComponents
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty
us-gaap:OperatingLeaseExpense

us-gaap:OperatingLeaseLeaseIncome

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherGeneralExpense

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic

us-gaap:PaymentsForCapitalImprovements

us-gaap:PaymentsForDepositsOnRealEstateAcquisitions

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock

us-gaap:PaymentsOfStockIssuanceCosts

us-gaap:PaymentsToAcquireCommercialRealEstate

us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:PaymentsToAcquireFurnitureAndFixtures

us-gaap:ProceedsFromIssuanceOfCommonStock
us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock
us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock

us-gaap:ProceedsFromPartnershipContribution

us-gaap:ProceedsFromPaymentsToMinorityShareholders

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:PropertyPlantAndEquipmentAdditions
us-gaap:CounterpartyName, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType
us-gaap:CounterpartyName, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty
us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock
us-gaap:SaleOfStockConsiderationReceivedOnTransaction
us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock

us-gaap:StockIssued1
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueConversionOfUnits
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockRedeemedOrCalledDuringPeriodValue

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersBasic

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersDiluted
us-gaap:SubsidiarySaleOfStock
nsa:CommonAndPreferredStockRemainingValueOfSharesAuthorizedUnderATMProgram

nsa:DebtLongtermAndShorttermCombinedAmountsGross
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

nsa:DeferredFinanceCostsAndDebtPremium
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasis

nsa:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFiveGross

nsa:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearOneGross

nsa:LongTermDebtPremiumAmortizationRepaymentsOfPrincipalAfterYearFive

nsa:LongTermDebtPremiumAmortizationRepaymentsOfPrincipalInYearOne

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationAfterYearFive

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInNextTwelveMonths

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearFive

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearFour

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearThree

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearTwo

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearFiveGross

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearFourGross

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearThreeGross

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearTwoGross

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalRemainderOfYearGross

nsa:LongtermDebtMaturitiesRepaymentsofPrincipalAfterYearFiveGross

nsa:LongtermDebtMaturitiesRepaymentsofPrincipalDueNextTwelveMonthsGross

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearFive

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearFour

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearThree

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearTwo

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalRemainderOfYear

nsa:NumberOfStorageUnits
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RealEstateProperties
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty
nsa:RelatedPartyCapitalContributions
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty
nsa:RelatedPartyLongTermDebt
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty
nsa:RelatedPartyOwnershipInterest

srt:RealEstateAndAccumulatedDepreciationAmountOfEncumbrances

srt:RealEstateFederalIncomeTaxBasis

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent

us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableRelatedParties

us-gaap:CommonStockValueOutstanding
us-gaap:ProductOrService
us-gaap:ContractWithCustomerLiability
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentFaceAmount
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:Range, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtLongtermAndShorttermCombinedAmount
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredRevenue
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:DerivativeAssetsLiabilitiesAtFairValueNet

us-gaap:DerivativeLiabilities

us-gaap:DueFromJointVentures

us-gaap:EarnestMoneyDeposits
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
us-gaap:AwardType, us-gaap:PlanName
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:EquityMethodInvestmentOwnershipPercentage
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestments
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FixturesAndEquipmentGross

us-gaap:InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet

us-gaap:InterestRateDerivativeLiabilitiesAtFairValue

us-gaap:InvestmentBuildingAndBuildingImprovements

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
nsa:LeaseArrangements
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LoansPayableFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
us-gaap:Range, us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType
us-gaap:LongTermDebtMeasurementInput
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtWeightedAverageInterestRate

us-gaap:NetRentableArea
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RealEstateProperties
us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:NumberOfUnitsInRealEstateProperty
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RealEstateProperties
us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty
nsa:LeaseArrangements
us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:OtherLiabilities

us-gaap:PreferredStockValueOutstanding

us-gaap:PrepaidExpenseCurrentAndNoncurrent

us-gaap:RealEstateAccumulatedDepreciation

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfLand

us-gaap:RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfLand

us-gaap:RealEstateGrossAtCarryingValue

us-gaap:RealEstateInvestmentPropertyAccumulatedDepreciation

us-gaap:RealEstateInvestmentPropertyAtCost

us-gaap:RealEstateInvestmentPropertyNet
us-gaap:ConsolidatedEntities
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RestrictedCashAndCashEquivalents
us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock
us-gaap:SaleOfStockPricePerShare
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType, us-gaap:PlanName
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock
us-gaap:SharesIssuedPricePerShare
us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Goodwill
Assets
Property Plant And Equipment Net
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Share Outstanding Basic And Diluted
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Remainder Of Fiscal Year

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁129.578123.187NANA68.2159.798NANA57.54356.655NANA50.48699.935NA44.26944.22343.401
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁76.71271.794NANA68.2159.798NANA57.54356.655NANA50.48650.299NA44.26944.22343.401
us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted NANANA68.88768.2159.798NA59.27857.54356.655NA55.722NANANA44.269NANA
us-gaap:EarningsPerShareBasic █▁0.330.24NANA0.10.060.17-0.2-0.190.08-0.160.030.070.16-0.080.030.050.01
us-gaap:EarningsPerShareDiluted █▁0.250.19NANA0.10.060.13-0.2-0.190.08-0.160.030.070.09-0.080.030.050.01
us-gaap:EarningsPerShareBasicAndDiluted NANA0.210000000000000020.150.10.060.17-0.2-0.190.08-0.180.03NANA-0.080.03NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
 Cost Ratio us-gaap:EquityMethodInvestmentNonconsolidatedInvestee,us-gaap:RelatedPartyTransactionsByRelatedParty us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees,us-gaap:CorporateJointVenture█▅▅▃▁▂▂▃▂46.08643.69542.91641.87839.7340.23840.57441.640.858NANANANANANANANANA
 Operating Margin us-gaap:EquityMethodInvestmentNonconsolidatedInvestee,us-gaap:RelatedPartyTransactionsByRelatedParty us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees,us-gaap:CorporateJointVenture█▅▅▃▁▂▂▃▂46.08643.69542.91641.87839.7340.23840.57441.640.858NANANANANANANANANA
 SG&A Ratio us-gaap:EquityMethodInvestmentNonconsolidatedInvestee,us-gaap:RelatedPartyTransactionsByRelatedParty us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees,us-gaap:CorporateJointVenture█▅▅▃▁▂▂▃▂46.08643.69542.91641.87839.7340.23840.57441.640.858NANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▇█▇▆▅▁▆▂▂▄▃▅▅▆▅▄▄▅27.59338.67824.08416.4996.126-35.64522.591-20.679-20.6481.494-15.7145.9788.59116.0081.8321.2420.4921.978
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▅▇▆▆▅▁▆██▄▇▇▆▅▇▆▇▆6.48114.8149.2449.3235.172-14.34910.99618.82118.0292.13116.07613.338.8345.00415.1839.93611.9927.586
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▇█▇▆▅▁▇▄▄▅▄▆▆▆▆▅▅▅34.07453.49233.32825.82211.298-49.99433.587-1.858-2.6193.6250.36219.30817.42521.01217.01511.17812.4849.564
us-gaap:CostOfRevenue █▇▅▆▅▅▄▄▄▃▃▃▃▃▂▁36.65434.60431.09131.54630.25730.59227.71228.98827.1926.45726.91326.55225.18425.22623.28521.618NANA
us-gaap:CostsAndExpenses █▆▅▅▅▅▄▄▃▃▂▂▁▁85.46578.66371.79571.77670.35771.1866.66168.62564.18961.57260.4457.86956.03354.9NANANANA
us-gaap:GeneralAndAdministrativeExpense █▆▇▆▅▆▇▇▆▆▆▃▃▂▂▁▁▁12.4511.23811.39910.81810.32911.09411.60612.03911.1710.76610.6068.8488.468.3067.9947.487.4057.181
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▆▅▄▄▃▄▃▄▂▃▃▂▂▂▂▃▁36.3527.83125.31321.75718.0316.04919.21816.73717.97713.43214.83217.11113.08512.11612.40711.38815.8647.498
us-gaap:IncomeTaxExpenseBenefit ▇▂█▄▃▃▄▃▃▅▄▃▁▂▄▂▃▄0.6750.1960.7960.3460.2430.2860.3920.2230.2440.4920.3490.2820.0440.1430.3920.1620.2880.317
us-gaap:InterestExpense ██▇▇▇▇▆▆▆▅▄▃▃▃▂▂▁▁17.33916.79216.19215.26215.51315.62814.87414.43213.94713.21111.96110.65610.4729.6359.289.1578.167.471
us-gaap:InterestPaidNet ▅█▄▇▅▇▅▅▅▄▃▃▃▂▂▂▁▁13.25318.35912.64116.33913.86416.50212.81813.84913.85712.14211.07310.42110.0428.9399.1768.7147.937.131
us-gaap:NetIncomeLoss █▇▆▅▅▄▅▁▁▄▁▃▄▅▂▃▃▃28.71820.83818.05213.48710.4226.64813.088-8.86-7.6567.411-6.6364.3945.89110.46-1.2321.2712.3670.555
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▃▃▂▃▃▃▂██▂▇▄▃▁▄▃▄▂6.9576.7976.4657.9247.3659.1155.73825.37425.3895.52921.11912.4357.151.51313.2479.95513.2096.626
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic █▇▆▅▅▄▅▁▁▄▂▄▄▅▃▃▄▃25.44217.56314.77710.2127.1483.3759.815-12.132-10.9134.823-9.2231.8063.3047.872-3.5321.2712.3670.555
us-gaap:NonoperatingIncomeExpense ▁▁▁▂▂▁▂▂▃▂▃▄▄▅▅▅█▅-16.431-16.498-17.001-15.941-16.03-16.993-14.689-15.975-13.253-15.568-14.026-10.402-10.605-9.477-9.513-9.909-3.469-8.452
 us-gaap:OperatingIncomeLoss us-gaap:EquityMethodInvestmentNonconsolidatedInvestee,us-gaap:RelatedPartyTransactionsByRelatedParty us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees,us-gaap:CorporateJointVenture█▆▅▃▂▁▃▃▂33.56331.90730.83828.87328.35927.0628.54428.87328.314NANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▆█▇▆▆▁▇▅▄▅▅▆▆▇▆▆▆▆-1.60125.8578.8114.411-6.489-65.75714.761-18.372-20.352-9.315-14.1212.4794.3849.0395.0-0.048-3.0922.383
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome▁█-1.12517.84NA3.012-4.296-42.293NA-11.819-12.992-5.917-9.0781.5842.75.5483.064-0.029-1.8751.423
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:NoncontrollingInterest▁█-0.4768.017NA1.399-2.193-23.464NA-6.553-7.36-3.398-5.0430.8951.6843.4911.936-0.019-1.2170.96
us-gaap:OtherNonoperatingIncomeExpense ▃▃▁▃▂▃█▄▃▄▃▅▄▄▄▄▄▄-0.148-0.173-0.582-0.12-0.317-0.1920.727-0.008-0.169-0.098-0.160.1530.0-0.0840.017-0.009-0.014-0.052
us-gaap:PreferredStockDividendsIncomeStatementImpact █████████▇▇▇▇▇▆▁▁▁3.2763.2753.2753.2753.2743.2733.2733.2723.2572.5882.5872.5882.5872.5882.30.00.00.0
us-gaap:ProfitLoss █▆▅▄▄▃▄▃▄▂▃▃▂▂▂▂▃▁35.67527.63524.51721.41117.78715.76318.82616.51417.73312.9414.48316.82913.04111.97312.01511.22615.5767.181
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nsa:AcquisitionFees▁▁▃█▆█▆▆████▃▃▆▁0.20.20.30.50.40.50.40.40.50.50.50.50.30.30.40.2NANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nsa:ManagementFeesAndOther█▇██▇▇▇▇▆▆▆▃▁▁▁▁6.1075.7285.9915.9015.6975.4495.3525.3745.1164.8934.8463.1482.1552.1612.0831.998NANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nsa:PropertyManagementCallCenterAndPlatformFees██▇▇▇▇▇▇▇▇▇▃▂▁▁▁3.63.53.33.43.23.23.13.33.23.23.21.91.41.31.21.3NANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nsa:PropertyRelatedOther█▆▅▆▄▄▄▄▄▃▂▂▂▁▁▁4.8294.1373.8523.8833.4183.3713.1333.2173.1282.8242.6262.6872.5492.3212.1842.145NANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nsa:RetailProductsAndSupplies█▄▃▆▃▃▃▃▄▃▃▁▃▃▁▃0.70.50.40.60.40.40.40.40.50.40.40.30.40.40.30.4NANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nsa:TenantInsuranceAndProtectionPlanFeesAndCommissions█▆▆▆▅▄▄▄▃▃▂▂▂▁▁▁3.63.12.9000000000000012.92.72.62.42.42.22.12.02.01.81.71.61.6NANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nsa:TenantWarrantyProtection█▇▃▇▇▆▄▄▄▄▂▂▁▁▁▁2.21.90.82.01.91.61.11.21.21.20.70.70.50.50.50.4NANA
us-gaap:Revenues █▇▆▅▅▅▅▅▄▄▄▃▃▂▂▂▁▁138.246122.992114.109109.474104.417104.222100.568101.33795.41990.57289.29885.38279.72376.49373.36868.85864.34161.563
 us-gaap:SellingGeneralAndAdministrativeExpense us-gaap:EquityMethodInvestmentNonconsolidatedInvestee,us-gaap:RelatedPartyTransactionsByRelatedParty us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees,us-gaap:CorporateJointVenture█▆▅▄▁▂▂▃▂3.0142.8822.8462.782.642.6692.7092.752.706NANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:Assets █▇▇▆▆▆▅▅▅▄▄▄▃▃▂▂▁▁3891.2463651.6363513.5773280.9163285.053278.8733084.2453110.7973061.8552896.0312729.2632715.4182460.5552391.9092266.732072.9971977.5421905.731
us-gaap:Liabilities █▇▇▆▆▆▅▅▄▄▃▃▂▂▁▂▁▁2203.722070.0162083.1021920.5161916.3051897.8181632.1441653.5911563.0711492.8431326.9641281.0641190.3181107.221995.2431112.4591002.875927.711
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▆▆▆▅▅▅▄▄▄▃▃▂▂▁▁3891.2463651.6363513.5773280.9163285.053278.8733084.2453110.7973061.8552896.0312729.2632715.4182460.5552391.9092266.732072.9971977.5421905.731
us-gaap:StockholdersEquity █▇▆▅▅▅▅▅▆▅▅▅▄▄▄▁▁▁1167.3011084.651968.957915.229917.569923.482919.63915.702957.576893.446916.839950.52821.165829.295841.023566.404575.513582.891
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue ▃▂▂▂▂▂▃█▁▂▁▁▂▁▁▁▁▁22.4119.51318.72316.77917.27118.68920.55844.74915.25515.87813.18115.04516.41915.26213.36613.67313.59114.207
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▃▂▂▂▂▂▃█▂▂▁▂▂▁▁▁▃▁25.97522.8121.70121.26522.90622.68624.27650.20619.75319.42316.36319.74923.52818.19116.40718.35627.54517.25
us-gaap:Land █▇▇▆▆▆▅▅▅▄▄▃▃▃▂▂▁▁790.748765.453738.863690.581687.33680.035649.938643.524640.052612.273583.455577.167559.182550.025528.304502.503482.983464.59
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
 us-gaap:AmortizationOfIntangibleAssets us-gaap:FiniteLivedIntangibleAssetsByMajorClass nsa:TenantReinsuranceIntangible▄▁█▁▁▁▁▄▁0.20.10.30.10.10.10.10.20.1NANANANANANANANANA
 us-gaap:AmortizationOfIntangibleAssets us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:LeasesAcquiredInPlace▇▃▂▁▃▄▄▅▄▃▃▄▅▄▄▄▅█4.02.42.01.72.42.92.73.32.82.52.42.93.33.03.03.03.24.3
 us-gaap:AmortizationOfIntangibleAssets us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:ServiceAgreements▄██▄█▄▁▄▄▄▄▄▄▄▄▄▄▄0.20.30.30.20.30.20.10.20.20.20.20.20.20.20.20.20.20.2
us-gaap:PropertyPlantAndEquipmentNet ▁▁▁▂▂▂▂█▁▁▁▁▁▁▁▁▁▁1.4811.6121.6731.8251.9982.0151.9258.7761.7041.5841.5741.271.3411.4281.4441.2451.2091.19
us-gaap:Goodwill ██████▁▁▁▁▁▁▁▁▁▁▁▁8.1828.1828.1828.1828.1828.1825.755.755.755.755.755.755.755.755.755.755.755.75
 us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass us-gaap:TradeNames██████▁▁6.386.386.386.386.386.383.23.2NANA3.2NANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA32.195NANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass nsa:TenantReinsuranceIntangible▁▂▃▃▄▅▆▇█13.44413.5913.73713.84413.9914.13714.28314.42914.58NA0.0NANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:LeasesAcquiredInPlace█▅▄▁▂▃▂▄▆▄▂▃▃▅▄▃▃▄10.8547.936.462.6943.7515.3523.7045.6198.0296.2174.0634.4925.0646.9476.594.6374.666.076
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:ServiceAgreements▆▆▇▇██▁▁▂▂▂▂▃▃▃▄▄▄11.4911.74411.99812.25112.50512.768.3498.5268.7038.889.0579.2349.4119.5889.7659.94210.11910.296
us-gaap:OperatingLeaseRightOfUseAsset ██████████▁22.67422.90323.12923.35423.57723.79823.30623.50722.97123.110.0NA0.0NANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:MinorityInterest ▇▆▄▃▄▄███▆▅▅▄▄▃▁▁▁520.225496.969461.518445.171451.176457.573532.471541.504541.208509.742485.46483.834449.072455.393430.464394.134399.154395.129
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA1.9241.9241.9241.9151.8311.7051.6711.671NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo nsa:LeaseArrangements nsa:LeaseholdInterestPropertiesNANA1.459NANANA1.444NANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo nsa:LeaseArrangements nsa:OfficeLeasesNANA0.465NANANA0.387NANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty nsa:CorporateOfficeNANANA0.4650.4650.4710.3870.2860.2860.286NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty nsa:LeaseholdInterestPropertiesNANANA1.4591.4591.4441.4441.4191.3851.385NANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA1.8941.8941.8941.9241.841.8311.7971.797NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree nsa:LeaseArrangements nsa:LeaseholdInterestPropertiesNANA1.464NANANA1.459NANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree nsa:LeaseArrangements nsa:OfficeLeasesNANA0.43NANANA0.381NANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty nsa:CorporateOfficeNANANA0.430.430.4650.3810.3870.3870.387NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty nsa:LeaseholdInterestPropertiesNANANA1.4641.4641.4591.4591.4441.411.41NANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA1.921.921.921.8941.811.841.8061.806NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour nsa:LeaseArrangements nsa:LeaseholdInterestPropertiesNANA1.47NANANA1.464NANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour nsa:LeaseArrangements nsa:OfficeLeasesNANA0.45NANANA0.346NANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty nsa:CorporateOfficeNANANA0.450.450.430.3460.3810.3810.381NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty nsa:LeaseholdInterestPropertiesNANANA1.471.471.4641.4641.4591.4251.425NANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA1.977NANA1.921.8231.811.7771.777NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive nsa:LeaseArrangements nsa:LeaseholdInterestPropertiesNANA1.521NANANA1.47NANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive nsa:LeaseArrangements nsa:OfficeLeasesNANA0.456NANANA0.353NANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA35.83NANA37.80837.41939.24137.77137.462NANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive nsa:LeaseArrangements nsa:LeaseholdInterestPropertiesNANA35.206NANANA36.728NANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive nsa:LeaseArrangements nsa:OfficeLeasesNANA0.624NANANA0.691NANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:StockholdersEquity █▇▆▅▅▅▅▅▆▅▅▅▄▄▄▁▁▁1167.3011084.651968.957915.229917.569923.482919.63915.702957.576893.446916.839950.52821.165829.295841.023566.404575.513582.891
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest █▇▆▅▅▅▆▆▆▅▅▆▄▄▄▁▁▁1687.5261581.621430.4751360.41368.7451381.0551452.1011457.2061498.7841403.1881402.2991434.3541270.2371284.6881271.487960.538974.667978.02
us-gaap:AdditionalPaidInCapital █▇▆▅▅▅▄▄▄▄▄▄▂▂▂▁▁▁1244.2691156.3781050.714993.164984.95970.786905.763901.53901.499839.162844.276842.679701.256700.762711.467595.354594.192590.526
us-gaap:RetainedEarningsAccumulatedDeficit ▁▁▁▂▂▂▃▃▄▅▅▆▆▇▇▇██-263.117-259.155-251.704-242.222-228.924-213.447-197.075-187.305-156.192-126.309-114.122-87.903-73.307-61.956-55.729-38.117-27.87-18.728
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▃▃▂▁▁▁▅▅▆▇▇███▇▇▇▇-33.046-31.642-49.084-54.723-57.462-52.855-7.833-17.294-5.4667.52613.61822.67920.21117.48512.2828.7248.74810.651
us-gaap:MinorityInterest ▇▆▄▃▄▄███▆▅▅▄▄▃▁▁▁520.225496.969461.518445.171451.176457.573532.471541.504541.208509.742485.46483.834449.072455.393430.464394.134399.154395.129
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementClassOfStock us-gaap:CommonClassA▁█103.67122.412NA5.86811.9164.249NANA70.637NANA175.691NANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementClassOfStock,us-gaap:StatementEquityComponents us-gaap:CommonClassA,us-gaap:AdditionalPaidInCapital▁█103.646122.375NA5.86611.9124.248NANA70.613NANA175.632NANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementClassOfStock,us-gaap:StatementEquityComponents us-gaap:CommonClassA,us-gaap:CommonStock▁█0.0240.037NA0.0020.0040.001NANA0.024NANA0.059NANANANANANA
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders █▁24.60620.604NA17.89716.84319.813NA19.82519.03817.18117.21316.57415.70914.51515.69515.17314.3513.016
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▄▆▅▄▄▅▄▄▂▄▃▂▁▃▁▁80.18964.0753.00961.96254.99850.68546.5756.60647.07746.39838.13349.37840.42633.85929.41639.32827.33928.205
us-gaap:NetCashProvidedByUsedInInvestingActivities ▂▄▂██▃█▇▄▅▇▁▆▆▃▅▇█-248.736-149.4-241.185-24.6-32.786-211.112-28.659-46.298-174.367-143.706-53.953-272.59-82.841-105.105-192.165-125.319-67.203-24.604
us-gaap:NetCashProvidedByUsedInFinancingActivities ▇▄▇▁▂▆▁▃▆▅▂█▃▄▆▄▃▂171.71286.439188.612-39.003-21.992158.837-43.84120.145127.62100.36812.434219.43347.75273.03160.876.80250.159-1.688
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▅▄▄▄▄▄▁█▄▅▄▄▅▄▄▃▅▄3.1651.1090.436-1.6410.22-1.59-25.9330.4530.333.06-3.386-3.7795.3371.784-1.949-9.18910.2951.913
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AmortizationOfFinancingCosts ██▇▇▇▆▇▆▆▅▅▄▄▃▂▂▂▁0.820.8060.7970.770.7670.7540.7630.7360.7210.6930.6860.6640.6290.590.5620.5540.5430.516
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▄▆▅▄▄▅▄▄▂▄▃▂▁▃▁▁80.18964.0753.00961.96254.99850.68546.5756.60647.07746.39838.13349.37840.42633.85929.41639.32827.33928.205
us-gaap:NetIncomeLoss █▇▆▅▅▄▅▁▁▄▁▃▄▅▂▃▃▃28.71820.83818.05213.48710.4226.64813.088-8.86-7.6567.411-6.6364.3945.89110.46-1.2321.2712.3670.555
us-gaap:ProfitLoss █▆▅▄▄▃▄▃▄▂▃▃▂▂▂▂▃▁35.67527.63524.51721.41117.78715.76318.82616.51417.73312.9414.48316.82913.04111.97312.01511.22615.5767.181
us-gaap:ShareBasedCompensation █▇▆▆▆▁▆▆▅▅▄▄▃▂▃▃▃▄1.3481.2861.171.1831.1510.7741.1541.1531.1081.1121.0291.0220.9190.8670.920.9210.940.983
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▂▄▂██▃█▇▄▅▇▁▆▆▃▅▇█-248.736-149.4-241.185-24.6-32.786-211.112-28.659-46.298-174.367-143.706-53.953-272.59-82.841-105.105-192.165-125.319-67.203-24.604
 us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:EquityMethodInvestmentNonconsolidatedInvestee,us-gaap:RealEstateProperties,us-gaap:RelatedPartyTransactionsByRelatedParty nsa:A2016JointVenture,us-gaap:UnconsolidatedProperties,us-gaap:CorporateJointVentureNANA0.0NANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▇▄▇▁▂▆▁▃▆▅▂█▃▄▆▄▃▂171.71286.439188.612-39.003-21.992158.837-43.84120.145127.62100.36812.434219.43347.75273.03160.876.80250.159-1.688
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▆▃█▂▂▄▁▅▅▄▃▄▄▄▄▄▂▄366.0180.0514.0104.567.0244.00.0323.0310.5188.5170.0214.0188.5250.0220.5229.988.5222.0
us-gaap:RepaymentsOfLongTermDebt ▆▄█▃▂▂▁▆▆▂▃▄▃▄█▄▁▅240.509164.564337.54104.69657.33246.5791.312253.778254.7651.778120.244134.578107.205145.212334.189126.15313.005205.757
us-gaap:PaymentsOfDividendsCommonStock █▆▆▆▅▄▄▄▄▃▃▃▃▂▂▁▁▁29.40425.01424.25923.5122.62519.74719.58518.98118.9717.0116.99616.40214.65514.09914.0811.51811.50910.564
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType,us-gaap:SubsequentEventType nsa:A2030SeniorNotes,us-gaap:UnsecuredDebt,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType,us-gaap:SubsequentEventType nsa:A2032SeniorNotes,us-gaap:UnsecuredDebt,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANA

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-312018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-30
Value12912368595756509944444335736763520.0010.0010.001
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-312018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-30
Value767168595756505044444335232323150.0010.0010.001
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Share Outstanding Basic And Diluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted


Weighted
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302017-09-302015-03-312014-03-31
Value68685959575655440.0010.001
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.330.240.10.060.17-0.2-0.190.08-0.160.030.070.16-0.080.030.050.010.2200.320.10.20.190.2200000
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.00.00.00.00.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.250.190.10.060.13-0.2-0.190.08-0.160.030.070.09-0.080.030.050.010.0700.080.070.080.03000000
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.00.00.00.00.0

Earnings Per Share Basic And Diluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:EarningsPerShareBasicAndDiluted


Earnings
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302015-03-312014-03-31
Value0.210.150.10.060.17-0.2-0.190.08-0.180.03-0.080.0300
Percentage of EarningsPerShareBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value273824166.126-35.64522-20.679-20.6481.494-15.7145.9788.591161.8321.2420.4921.978170.6387.371.5174.6044.3723.4640.00.00.00.00.0
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0
Percentage of Revenues20.031.421.115.15.9-34.222.5-20.4-21.61.6-17.67.010.820.92.51.80.83.20.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value6.481149.2449.3235.172-14.3491018182.13116138.8345.004159.936117.5864.3718.469-7.3611.7932.255-3.114-3.085-3.552-2.872-4.418-7.129-2.803
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.712.08.18.55.0-13.810.918.618.92.418.015.611.16.520.714.418.612.30.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value3453332511-49.99433-1.858-2.6193.6250.3621917211711129.564219.1070.0093.316.8591.2580.379-3.552-2.872-4.418-7.129-2.803
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues24.643.529.223.610.8-48.033.4-1.8-2.74.00.422.621.927.523.216.219.415.50.00.00.00.00.00.00.00.00.00.00.00.0

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value36343131303027282726262625252321
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues26.528.127.228.829.029.427.628.628.529.230.131.131.633.031.731.4

us-gaap:CostOfRevenue us-gaap:CounterpartyName, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:ParticipatingRegionalOperator, nsa:PayrollServices, srt:Management


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6.66.45.95.75.58.88.28.17.97.87.67.47.2
Percentage of CostOfRevenue18.018.519.018.118.228.829.627.929.129.528.227.928.6
Percentage of Revenues4.85.25.25.25.38.48.28.08.38.68.58.79.0
Percentage of Revenues nsa:ParticipatingRegionalOperator nsa:PayrollServices srt:Management0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CostOfRevenue us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value121112131113121212
Percentage of CostOfRevenue34.234.138.841.237.643.143.443.946.1
Percentage of Revenues9.19.610.611.910.912.612.012.613.1
Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees us-gaap:CorporateJointVenture27.227.00.031.128.632.80.030.630.7

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8578717170716668646160575654
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues61.864.062.965.667.468.366.367.767.368.067.767.870.371.8

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value12111110101111121110108.8488.468.3067.9947.487.4057.1817.0975.2594.8374.3354.4094.0564.1873.6132.742.3151.7961.338
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues9.09.110.09.99.910.611.511.911.711.911.910.410.610.910.910.911.511.70.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value36272521181619161713141713121211157.4986.1428.0246.1574.911
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues26.322.622.219.917.315.419.116.518.814.816.620.016.415.816.916.524.712.20.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value675000.0196000.0796000.0346000.0243000.0286000.0392000.0223000.0244000.0492000.0349000.0282000.044000.0143000.0392000.0162000.0288000.0317000.067000.080000.0112000.0109000.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.50.20.70.30.20.30.40.20.30.50.40.30.10.20.50.20.40.50.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value171616151515141413131110109.6359.289.1578.167.4717.0596.2655.8444.9414.7274.2464.8246.9827.4055.4594.7235.446
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues12.513.714.213.914.915.014.814.214.614.613.412.513.112.612.613.312.712.10.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestExpense us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value101010101010109.9349.941
Percentage of InterestExpense60.162.063.867.566.465.767.568.871.3
Percentage of Revenues7.58.59.19.49.99.810.09.810.4
Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees us-gaap:CorporateJointVenture22.623.80.024.625.925.50.023.924.3

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value131812161316121313121110108.9399.1768.7147.937.1316.8126.1475.6374.7174.4873.985.4986.241-12.054224.144.492
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues9.614.911.114.913.315.812.713.714.513.412.412.212.611.712.512.712.311.60.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value28201813106.64813-8.86-7.6567.411-6.6364.3945.89110-1.2321.2712.3670.5558.396-0.0117.372.214.6044.3723.4640.00.00.00.00.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0
Percentage of Revenues20.816.915.812.310.06.413.0-8.7-8.08.2-7.45.17.413.7-1.71.83.70.90.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value4.6382.9772.0090.0890.154-1.418-0.09-4.913-6.64
Percentage of NetIncomeLoss16.214.311.10.71.5-21.3-0.755.586.7
Percentage of Revenues3.42.41.80.10.1-1.4-0.1-4.8-7.0
Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees us-gaap:CorporateJointVenture10.16.80.00.20.4-3.50.0-11.8-16.3

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value6.9576.7976.4657.9247.3659.1155.73825255.52921127.151.513139.955136.626-2.3217.955-1.3252.5920.761-2.263-3.371-2.771-2.371-5.025-6.158-2.803
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues5.05.55.77.27.18.75.725.026.66.123.714.69.02.018.114.520.510.80.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value251714107.1483.3759.815-12.132-10.9134.823-9.2231.8063.3047.872-3.5321.2712.3670.5558.396-0.0117.372.21
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues18.414.312.99.36.83.29.8-12.0-11.45.3-10.32.14.110.3-4.81.83.70.90.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-16431000.0-16498000.0-17001000.0-15941000.0-16030000.0-16993000.0-14689000.0-15975000.0-13253000.0-15568000.0-14026000.0-10402000.0-10605000.0-9477000.0-9513000.0-9909000.0-3469000.0-8452000.0-10493000.0-8097000.0-7857000.0-6343000.0-5323000.0-7172000.0-6570000.0-7730000.0-8640000.0-9086000.0-9847000.0-5867000.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-11.9-13.4-14.9-14.6-15.4-16.3-14.6-15.8-13.9-17.2-15.7-12.2-13.3-12.4-13.0-14.4-5.4-13.70.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:OperatingIncomeLoss

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value333130282827282828
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues24.325.927.026.427.226.028.428.529.7
Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees us-gaap:CorporateJointVenture72.873.00.068.971.467.20.069.469.3

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1.601258.8114.411-6.489-65.75714-18.372-20.352-9.315-14.1212.4794.3849.0395.0-0.048-3.0922.383151.163-6.036-1.4921.494-0.8510.286-0.781
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-1.221.07.74.0-6.2-63.114.7-18.1-21.3-10.3-15.82.95.511.86.8-0.1-4.83.90.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-1.125173.012-4.296-42.293-11.819-12.992-5.917-9.0781.5842.75.5483.064-0.029-1.8751.4238.7850.6490.0-0.693
Percentage of OtherComprehensiveIncomeLossNetOfTax70.369.068.366.264.364.363.863.564.363.961.661.461.360.460.659.756.855.8-0.046.4
Percentage of Revenues-0.814.52.8-4.1-40.6-11.7-13.6-6.5-10.21.93.47.34.2-0.0-2.92.30.00.00.00.0
Percentage of Revenues us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-0.4768.0171.399-2.193-23.464-6.553-7.36-3.398-5.0430.8951.6843.4911.936-0.019-1.2170.966.6920.514-6.036-0.7991.494-0.8510.286-0.781
Percentage of OtherComprehensiveIncomeLossNetOfTax29.731.031.733.835.735.736.236.535.736.138.438.638.739.639.440.343.244.2100.053.6100.0100.0100.0100.0
Percentage of Revenues-0.36.51.3-2.1-22.5-6.5-7.7-3.8-5.61.02.14.62.6-0.0-1.91.60.00.00.00.00.00.00.00.0
Percentage of Revenues us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-148000.0-173000.0-582000.0-120000.0-317000.0-192000.0727000.0-8000.0-169000.0-98000.0-160000.0153000.00-84000.017000.0-9000.0-14000.0-52000.0-137000.0-95000.0-169000.0-114000.0-23000.0-52000.0-113000.0-91000.064000.03000.01000.0-4000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.1-0.1-0.5-0.1-0.3-0.20.7-0.0-0.2-0.1-0.20.20.0-0.10.0-0.0-0.0-0.10.00.00.00.00.00.00.00.00.00.00.00.0

Preferred Stock Dividends Income Statement Impact

us-gaap:PreferredStockDividendsIncomeStatementImpact

us-gaap:PreferredStockDividendsIncomeStatementImpact


Preferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.2763.2753.2753.2753.2743.2733.2733.2723.2572.5882.5872.5882.5872.5882.30.00.00.0
Percentage of PreferredStockDividendsIncomeStatementImpact100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0
Percentage of Revenues2.42.72.93.03.13.13.33.23.42.92.93.03.23.43.10.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value35272421171518161712141613111211157.1816.0757.9446.0454.8025.3652.1090.093-2.771-2.371-5.025-6.158-2.803
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues25.822.521.519.617.015.118.716.318.614.316.219.716.415.716.416.324.211.70.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value6.9576.7977.9247.3659.11525255.52921127.151.513139.955136.626-2.3217.955-1.3252.5920.761-2.263-3.371-2.771
Percentage of ProfitLoss19.524.637.041.457.8153.7143.242.7145.873.954.812.6110.388.784.892.3-38.2100.1-21.954.014.2-107.3-3624.7100.0
Percentage of Revenues5.05.57.27.18.725.026.66.123.714.69.02.018.114.520.510.80.00.00.00.00.00.00.00.0
Percentage of Revenues us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value282013106.648-8.86-7.6567.411-6.6364.3945.89110-1.2321.2712.3670.5558.396-0.0117.372.214.6044.372
Percentage of ProfitLoss80.575.463.058.642.2-53.7-43.257.3-45.826.145.287.4-10.311.315.27.7138.2-0.1121.946.085.8207.3
Percentage of Revenues20.816.912.310.06.4-8.7-8.08.2-7.45.17.413.7-1.71.83.70.90.00.00.00.00.00.0
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

nsa:AcquisitionFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.20.20.30.50.40.50.40.40.50.50.50.50.30.30.40.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.10.20.30.50.40.50.40.40.50.60.60.60.40.40.50.3
Percentage of Revenues nsa:AcquisitionFees0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nsa:ManagementFeesAndOther


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value6.1075.7285.9915.9015.6975.4495.3525.3745.1164.8934.8463.1482.1552.1612.0831.998
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3053.52864.01997.01180.21424.21089.81338.01343.51023.2978.6969.2629.6718.3720.3520.8999.0
Percentage of Revenues4.44.75.35.45.55.25.35.35.45.45.43.72.72.82.82.9
Percentage of Revenues nsa:ManagementFeesAndOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nsa:PropertyManagementCallCenterAndPlatformFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3.63.53.33.43.23.23.13.33.23.23.21.91.41.31.21.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1800.01750.01100.0680.0800.0640.0775.0825.0640.0640.0640.0380.0466.7433.3300.0650.0
Percentage of Revenues2.62.82.93.13.13.13.13.33.43.53.62.21.81.71.61.9
Percentage of Revenues nsa:PropertyManagementCallCenterAndPlatformFees0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nsa:PropertyRelatedOther


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value4.8294.1373.8523.8833.4183.3713.1333.2173.1282.8242.6262.6872.5492.3212.1842.145
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2414.52068.51284.0776.6854.5674.2783.2804.2625.6564.8525.2537.4849.7773.7546.01072.5
Percentage of Revenues3.53.43.43.53.33.23.13.23.33.12.93.13.23.03.03.1
Percentage of Revenues nsa:PropertyRelatedOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nsa:RetailProductsAndSupplies


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.70.50.40.60.40.40.40.40.50.40.40.30.40.40.30.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax350.0250.0133.3120.0100.080.0100.0100.0100.080.080.060.0133.3133.375.0200.0
Percentage of Revenues0.50.40.40.50.40.40.40.40.50.40.40.40.50.50.40.6
Percentage of Revenues nsa:RetailProductsAndSupplies0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nsa:TenantInsuranceAndProtectionPlanFeesAndCommissions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3.63.12.9000000000000012.92.72.62.42.42.22.12.02.01.81.71.61.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1800.01550.0966.7580.0675.0520.0600.0600.0440.0420.0400.0400.0600.0566.7400.0800.0
Percentage of Revenues2.62.52.52.62.62.52.42.42.32.32.22.32.32.22.22.3
Percentage of Revenues nsa:TenantInsuranceAndProtectionPlanFeesAndCommissions0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nsa:TenantWarrantyProtection


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2.21.90.82.01.91.61.11.21.21.20.70.70.50.50.50.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1100.0950.0266.7400.0475.0320.0275.0300.0240.0240.0140.0140.0166.7166.7125.0200.0
Percentage of Revenues1.61.50.71.81.81.51.11.21.31.30.80.80.60.70.70.6
Percentage of Revenues nsa:TenantWarrantyProtection0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value13812211410910410410010195908985797673686461
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value464342413940404140
Percentage of Revenues33.335.537.638.338.038.640.341.142.8
Percentage of Revenues33.335.537.638.338.038.640.341.142.8
Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees us-gaap:CorporateJointVenture100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.0142.8822.8462.782.642.6692.7092.752.706
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.22.32.52.52.52.62.72.72.8
Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees us-gaap:CorporateJointVenture6.56.66.66.66.66.66.76.66.6

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value389136513513328032853278308431103061289627292715246023912266207219771905189215821376117911011044942864832
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value179518091823183018421857
Percentage of Assets46.149.651.955.856.160.2
Percentage of Assets46.149.651.955.856.160.2
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees us-gaap:CorporateJointVenture100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2203207020831920191618971632165315631492132612811190110799511121002927913760786654585530437636618
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets56.656.759.358.558.357.952.953.251.051.548.647.248.446.343.953.750.748.748.348.057.255.553.250.846.473.674.3

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value389136513513328032853278308431103061289627292715246023912266207219771905189215821376117911011044942864832
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value179518091823183018421857
Percentage of LiabilitiesAndStockholdersEquity46.149.651.955.856.160.2
Percentage of Assets46.149.651.955.856.160.2
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees us-gaap:CorporateJointVenture100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value116710849689159179239199159578939169508218298415665755825774432522362362352330.00.0
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of Assets30.029.727.627.927.928.229.829.431.330.933.635.033.434.737.127.329.130.630.528.018.320.021.522.524.80.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value22191816171820441515131516151313131412119.9398.4896.6656.7866.0558.3289.0099.237148.524110.0
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.60.50.50.50.50.60.71.40.50.50.50.60.70.60.60.70.70.70.70.70.70.70.60.60.61.01.10.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-31
Value2522212122222450191916192318161827171516139.37711
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.60.60.60.70.70.81.60.60.70.60.71.00.80.70.91.40.90.81.01.00.91.3

Land

us-gaap:Land

us-gaap:Land


Land
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value790765738690687680649643640612583577559550528502482464456419382332315296268241236
Percentage of Land100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.321.021.021.020.920.721.120.720.921.121.421.322.723.023.324.224.424.424.126.527.828.228.728.428.528.028.4

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:AmortizationOfIntangibleAssets

nsa:TenantReinsuranceIntangible


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.20.10.30.10.10.10.10.20.1
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets nsa:TenantReinsuranceIntangible0.00.00.00.00.00.00.00.00.0

us-gaap:LeasesAcquiredInPlace


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4.02.42.01.72.42.92.73.32.82.52.42.93.33.03.03.03.24.3
Percentage of AmortizationOfIntangibleAssets2000.02400.0666.71700.02400.02900.02700.01650.02800.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:LeasesAcquiredInPlace0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ServiceAgreements


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.20.30.30.20.30.20.10.20.20.20.20.20.20.20.20.20.20.2
Percentage of AmortizationOfIntangibleAssets100.0300.0100.0200.0300.0200.0100.0100.0200.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:ServiceAgreements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1481000.01612000.01673000.01825000.01998000.02015000.01925000.08776000.01704000.01584000.01574000.01270000.01341000.01428000.01444000.01245000.01209000.01190000.01243000.0822000.0752000.0683000.0534000.0427000.0213000.0209000.0198000.0
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.10.10.10.10.30.10.10.10.00.10.10.10.10.10.10.10.10.10.10.00.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value8182000.08182000.08182000.08182000.08182000.08182000.05750000.05750000.05750000.05750000.05750000.05750000.05750000.05750000.05750000.05750000.05750000.05750000.05750000.00
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.0

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:TradeNames


Indefinite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value6380000.06380000.06380000.06380000.06380000.06380000.03200000.03200000.03200000.0
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.20.20.20.10.10.1
Percentage of Assets us-gaap:TradeNames0.00.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value327.8326.3284.1994.2094.534.955.3847.7
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.50.50.40.40.40.50.60.9

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

nsa:TenantReinsuranceIntangible


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1313131313141414140.0
Percentage of FiniteLivedIntangibleAssetsNet0.00.042.70.00.00.00.00.00.00.0
Percentage of Assets0.30.40.40.40.40.40.50.50.50.0
Percentage of Assets nsa:TenantReinsuranceIntangible0.00.00.00.00.00.00.00.00.00.0

us-gaap:LeasesAcquiredInPlace


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value107.936.462.6943.7515.3523.7045.6198.0296.2174.0634.4925.0646.9476.594.6374.666.0769.3744.209
Percentage of FiniteLivedIntangibleAssetsNet0.00.020.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0
Percentage of Assets0.30.20.20.10.10.20.10.20.30.20.10.20.20.30.30.20.20.30.50.4
Percentage of Assets us-gaap:LeasesAcquiredInPlace0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ServiceAgreements


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value1111111212128.3498.5268.7038.889.0579.2349.4119.5889.7659.9421010100.0
Percentage of FiniteLivedIntangibleAssetsNet0.00.037.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.30.30.30.40.40.40.30.30.30.30.30.30.40.40.40.50.50.50.60.0
Percentage of Assets us-gaap:ServiceAgreements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-30
Value222223232323232322230.00.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of Assets0.60.60.70.70.70.70.80.80.80.80.00.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value7269686260646563594875857858524142434423149.2158.648108.2531415
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.91.91.91.91.92.02.12.01.91.72.73.13.22.52.32.02.12.32.41.51.00.80.81.10.91.61.9

us-gaap:OtherAssets us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value252424262322
Percentage of OtherAssets35.935.835.841.939.334.2
Percentage of Assets0.70.70.70.80.70.7
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees us-gaap:CorporateJointVenture1.41.41.31.41.31.2

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value520496461445451457532541541509485483449455430394399395401378337288279278271227214
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.413.613.113.613.714.017.317.417.717.617.817.818.319.019.019.020.220.721.223.924.524.525.426.728.826.425.7

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1924000.01924000.01924000.01915000.01831000.01705000.01671000.01671000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo nsa:LeaseArrangements

nsa:LeaseholdInterestProperties


Lessee
Period End2020-12-312019-12-31
Value1459000.01444000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo75.878.9
Percentage of Assets0.00.0
Percentage of Assets nsa:LeaseholdInterestProperties0.00.0

nsa:OfficeLeases


Lessee
Period End2020-12-312019-12-31
Value465000.0387000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo24.221.1
Percentage of Assets0.00.0
Percentage of Assets nsa:OfficeLeases0.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

nsa:CorporateOffice


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value465000.0465000.0471000.0387000.0286000.0286000.0286000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo24.224.224.621.116.817.117.1
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets nsa:CorporateOffice0.00.00.00.00.00.00.0

nsa:LeaseholdInterestProperties


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1459000.01459000.01444000.01444000.01419000.01385000.01385000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo75.875.875.478.983.282.982.9
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets nsa:LeaseholdInterestProperties0.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1894000.01894000.01894000.01924000.01840000.01831000.01797000.01797000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree nsa:LeaseArrangements

nsa:LeaseholdInterestProperties


Lessee
Period End2020-12-312019-12-31
Value1464000.01459000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree77.379.3
Percentage of Assets0.00.0
Percentage of Assets nsa:LeaseholdInterestProperties0.00.0

nsa:OfficeLeases


Lessee
Period End2020-12-312019-12-31
Value430000.0381000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree22.720.7
Percentage of Assets0.00.0
Percentage of Assets nsa:OfficeLeases0.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

nsa:CorporateOffice


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value430000.0430000.0465000.0381000.0387000.0387000.0387000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree22.722.724.220.721.121.521.5
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets nsa:CorporateOffice0.00.00.00.00.00.00.0

nsa:LeaseholdInterestProperties


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1464000.01464000.01459000.01459000.01444000.01410000.01410000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree77.377.375.879.378.978.578.5
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets nsa:LeaseholdInterestProperties0.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1920000.01920000.01920000.01894000.01810000.01840000.01806000.01806000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour nsa:LeaseArrangements

nsa:LeaseholdInterestProperties


Lessee
Period End2020-12-312019-12-31
Value1470000.01464000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour76.680.9
Percentage of Assets0.00.0
Percentage of Assets nsa:LeaseholdInterestProperties0.00.0

nsa:OfficeLeases


Lessee
Period End2020-12-312019-12-31
Value450000.0346000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour23.419.1
Percentage of Assets0.00.0
Percentage of Assets nsa:OfficeLeases0.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

nsa:CorporateOffice


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value450000.0450000.0430000.0346000.0381000.0381000.0381000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour23.423.422.719.120.721.121.1
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets nsa:CorporateOffice0.00.00.00.00.00.00.0

nsa:LeaseholdInterestProperties


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1470000.01470000.01464000.01464000.01459000.01425000.01425000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour76.676.677.380.979.378.978.9
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets nsa:LeaseholdInterestProperties0.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-31
Value1977000.01920000.01823000.01810000.01777000.01777000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive nsa:LeaseArrangements

nsa:LeaseholdInterestProperties


Lessee
Period End2020-12-312019-12-31
Value1521000.01470000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive76.980.6
Percentage of Assets0.00.0
Percentage of Assets nsa:LeaseholdInterestProperties0.00.0

nsa:OfficeLeases


Lessee
Period End2020-12-312019-12-31
Value456000.0353000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive23.119.4
Percentage of Assets0.00.0
Percentage of Assets nsa:OfficeLeases0.00.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-31
Value353737393737
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.21.21.31.21.3

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive nsa:LeaseArrangements

nsa:LeaseholdInterestProperties


Lessee
Period End2020-12-312019-12-31
Value3536
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive98.398.2
Percentage of Assets1.01.2
Percentage of Assets nsa:LeaseholdInterestProperties0.00.0

nsa:OfficeLeases


Lessee
Period End2020-12-312019-12-31
Value0.6240.691
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive1.71.8
Percentage of Assets0.00.0
Percentage of Assets nsa:OfficeLeases0.00.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-30
Value242424242525242424240.00.0
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of Assets0.60.70.70.80.80.80.80.80.80.80.00.0

us-gaap:OperatingLeaseLiability nsa:LeaseArrangements

nsa:LeaseholdInterestProperties


Operating
Period End2020-12-312019-12-31
Value2222
Percentage of OperatingLeaseLiability89.691.4
Percentage of Assets0.60.7
Percentage of Assets nsa:LeaseholdInterestProperties0.00.0

nsa:OfficeLeases


Operating
Period End2020-12-312019-12-31
Value2.5662.121
Percentage of OperatingLeaseLiability10.48.6
Percentage of Assets0.10.1
Percentage of Assets nsa:OfficeLeases0.00.0

us-gaap:OperatingLeaseLiability us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

nsa:CorporateOffice


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.6472.722.782.1212.1582.1942.199
Percentage of OperatingLeaseLiability10.610.811.08.68.79.19.1
Percentage of Assets0.10.10.10.10.10.10.1
Percentage of Assets nsa:CorporateOffice0.00.00.00.00.00.00.0

nsa:LeaseholdInterestProperties


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value22222222222121
Percentage of OperatingLeaseLiability89.489.289.091.491.390.990.9
Percentage of Assets0.70.70.70.70.70.70.8
Percentage of Assets nsa:LeaseholdInterestProperties0.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4545464646464545
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.41.41.41.51.51.51.6

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue nsa:LeaseArrangements

nsa:LeaseholdInterestProperties


Lessee
Period End2020-12-312019-12-31
Value4243
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue93.694.7
Percentage of Assets1.21.4
Percentage of Assets nsa:LeaseholdInterestProperties0.00.0

nsa:OfficeLeases


Lessee
Period End2020-12-312019-12-31
Value2.8962.444
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue6.45.3
Percentage of Assets0.10.1
Percentage of Assets nsa:OfficeLeases0.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

nsa:CorporateOffice


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.0023.1013.1872.4442.5012.5592.587
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue6.56.76.85.35.35.65.7
Percentage of Assets0.10.10.10.10.10.10.1
Percentage of Assets nsa:CorporateOffice0.00.00.00.00.00.00.0

nsa:LeaseholdInterestProperties


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value42434343444343
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue93.593.393.294.794.794.494.3
Percentage of Assets1.31.31.31.41.41.41.5
Percentage of Assets nsa:LeaseholdInterestProperties0.00.00.00.00.00.00.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2020212121222121
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.70.70.70.70.7

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount nsa:LeaseArrangements

nsa:LeaseholdInterestProperties


Lessee
Period End2020-12-312019-12-31
Value2021
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount98.498.5
Percentage of Assets0.60.7
Percentage of Assets nsa:LeaseholdInterestProperties0.00.0

nsa:OfficeLeases


Lessee
Period End2020-12-312019-12-31
Value0.330.323
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount1.61.5
Percentage of Assets0.00.0
Percentage of Assets nsa:OfficeLeases0.00.0

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

nsa:CorporateOffice


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.3550.3810.4070.3230.3430.3650.388
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount1.71.81.91.51.61.71.8
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets nsa:CorporateOffice0.00.00.00.00.00.00.0

nsa:LeaseholdInterestProperties


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value20202121212121
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount98.398.298.198.598.498.398.2
Percentage of Assets0.60.60.60.70.70.70.7
Percentage of Assets nsa:LeaseholdInterestProperties0.00.00.00.00.00.00.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value116710849689159179239199159578939169508218298415665755825774432522362362352330.00.0
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of Assets30.029.727.627.927.928.229.829.431.330.933.635.033.434.737.127.329.130.630.528.018.320.021.522.524.80.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312013-03-31
Value168715811430136013681381145214571498140314021434127012841271960974978979822589525516513505227214550.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets43.443.340.741.541.742.147.146.849.048.551.452.851.653.756.146.349.351.351.752.042.844.546.849.253.626.425.70.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value773788801816832847
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest45.949.956.160.060.858.4
Percentage of Assets19.921.622.824.925.327.5
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees us-gaap:CorporateJointVenture43.143.644.044.645.245.6

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312013-12-312013-03-31
Value-33.046-31.642-49.084-54.723-57.462-52.855-7.833-17.294-5.4667.52613222017128.7248.748109.025-0.184-0.662-0.6930.00.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-2.0-2.0-3.4-4.0-4.2-3.8-0.5-1.2-0.40.51.01.61.61.41.00.90.91.10.9-0.0-0.1-0.10.00.00.00.00.0
Percentage of Assets-0.8-0.9-1.4-1.7-1.7-1.6-0.3-0.6-0.20.30.50.80.80.70.50.40.40.60.5-0.0-0.0-0.10.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312013-03-31
Value1244115610509939849709059019018398448427017007115955945905764502522392362342330.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest73.773.173.573.072.070.362.461.960.159.860.258.755.254.556.062.061.060.458.954.942.945.545.845.746.20.00.00.0
Percentage of Assets32.031.729.930.330.029.629.429.029.429.030.931.028.529.331.428.730.031.030.528.518.420.321.522.524.80.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312013-03-31
Value0.7770.7520.7130.6920.6870.680.5970.5930.5930.5670.5670.5650.5050.5040.5030.4430.4430.4420.4310.3590.2320.230.230.230.230.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312013-03-31
Value520496461445451457532541541509485483449455430394399395401378337288279278271227214550.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest30.831.432.332.733.033.136.737.236.136.334.633.735.435.433.941.041.040.441.146.157.255.054.154.353.7100.0100.0100.00.0
Percentage of Assets13.413.613.113.613.714.017.317.417.717.617.817.818.319.019.019.020.220.721.223.924.524.525.426.728.826.425.70.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-31
Value2182182182182182182182182171721721721721721720.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest12.913.815.316.016.015.815.015.014.512.312.312.013.613.413.60.00.00.0
Percentage of Assets5.66.06.26.76.66.77.17.07.16.06.36.47.07.27.60.00.00.0
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312013-03-31
Value-263.117-259.155-251.704-242.222-228.924-213.447-197.075-187.305-156.192-126.309-114.122-87.903-73.307-61.956-55.729-38.117-27.87-18.728-8.719-8.013-0.12-2.3840.0110.010.0110.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-15.6-16.4-17.6-17.8-16.7-15.5-13.6-12.9-10.4-9.0-8.1-6.1-5.8-4.8-4.4-4.0-2.9-1.9-0.9-1.0-0.0-0.50.00.00.00.00.00.00.0
Percentage of Assets-6.8-7.1-7.2-7.4-7.0-6.5-6.4-6.0-5.1-4.4-4.2-3.2-3.0-2.6-2.5-1.8-1.4-1.0-0.5-0.5-0.0-0.20.00.00.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value1244115610509939849709059019018398448427017007115955945905764502522392362342330.0
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets32.031.729.930.330.029.629.429.029.429.030.931.028.529.331.428.730.031.030.528.518.420.321.522.524.80.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value-263120000.0-259160000.0-251700000.0-242220000.0-228920000.0-213450000.0-197080000.0-187300000.0-156190000.0-126310000.0-114120000.0-87903000.0-73307000.0-61956000.0-55729000.0-38117000.0-27870000.0-18728000.0-8719000.0-8013000.0-120000.0-2384000.011000.010000.011000.000
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of Assets-6.8-7.1-7.2-7.4-7.0-6.5-6.4-6.0-5.1-4.4-4.2-3.2-3.0-2.6-2.5-1.8-1.4-1.0-0.5-0.5-0.0-0.20.00.00.00.00.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value-33.046-31.642-49.084-54.723-57.462-52.855-7.833-17.294-5.4667.52613222017128.7248.748109.025-0.184-0.662-0.6930.00.00.00.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0
Percentage of Assets-0.8-0.9-1.4-1.7-1.7-1.6-0.3-0.6-0.20.30.50.80.80.70.50.40.40.60.5-0.0-0.0-0.10.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value520496461445451457532541541509485483449455430394399395401378337288279278271227214
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.413.613.113.613.714.017.317.417.717.617.817.818.319.019.019.020.220.721.223.924.524.525.426.728.826.425.7

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementClassOfStock

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:CommonClassA


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-06-302018-09-30
Value1031225.868114.24970175
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassA0.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-06-302018-09-30
Value1031225.866114.24870175
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassA us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.0

us-gaap:CommonClassA, us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-06-302018-09-30
Value0.0240.0370.0020.0040.0010.0240.059
Percentage of StockIssuedDuringPeriodValueNewIssues0.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassA us-gaap:CommonStock0.00.00.00.00.00.00.0

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value242017161919191717161514151514131311129.6679.8198.601
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value242017161919191717161514151514131311129.6679.8198.601
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value806453615450465647463849403329392728282721171316119.6485.2355.2443.9981.946
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues58.052.146.556.652.748.646.355.949.351.242.757.850.744.340.157.142.545.80.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-248740000.0-149400000.0-241180000.0-24600000.0-32786000.0-211110000.0-28659000.0-46298000.0-174370000.0-143710000.0-53953000.0-272590000.0-82841000.0-105100000.0-192160000.0-125320000.0-67203000.0-24604000.0-299770000.0-212790000.0-66541000.0-63769000.0-38398000.0-88973000.0-41089000.0-8449000.0-52607000.0-78631000.0-93485000.0-7276000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-179.9-121.5-211.4-22.5-31.4-202.6-28.5-45.7-182.7-158.7-60.4-319.3-103.9-137.4-261.9-182.0-104.4-40.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value17186188-39.003-21.992158-43.841201271001221947731607650-1.6882721874647247327-1.884768952.658
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues124.270.3165.3-35.6-21.1152.4-43.619.9133.7110.813.9257.059.995.5219.2111.578.0-2.70.00.00.00.00.00.00.00.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value3.1651.1090.436-1.6410.22-1.59-25.93300.333.06-3.386-3.7795.3371.784-1.949-9.189101.913-0.7642.246
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.30.90.4-1.50.2-1.5-25.830.10.33.4-3.8-4.46.72.3-2.7-13.316.03.10.00.0

Amortization Of Financing Costs

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfFinancingCosts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value820000.0806000.0797000.0770000.0767000.0754000.0763000.0736000.0721000.0693000.0686000.0664000.0629000.0590000.0562000.0554000.0543000.0516000.0462000.0453000.0453000.0587000.0593000.0511000.0620000.0990000.01476000.0724000.0675000.0407000.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value806453615450465647463849403329392728282721171316119.6485.2355.2443.9981.946
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues58.052.146.556.652.748.646.355.949.351.242.757.850.744.340.157.142.545.80.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value28201813106.64813-8.86-7.6567.411-6.6364.3945.89110-1.2321.2712.3670.5558.396-0.0117.372.214.6044.3723.4640.00.00.00.00.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0
Percentage of Revenues20.816.915.812.310.06.413.0-8.7-8.08.2-7.45.17.413.7-1.71.83.70.90.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value4.6382.9772.0090.0890.154-1.418-0.09-4.913-6.64
Percentage of NetIncomeLoss16.214.311.10.71.5-21.3-0.755.586.7
Percentage of Revenues3.42.41.80.10.1-1.4-0.1-4.8-7.0
Percentage of Revenues us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees us-gaap:CorporateJointVenture10.16.84.70.20.4-3.5-0.2-11.8-16.3

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value35272421171518161712141613111211157.1816.0757.9446.0454.8025.3652.1090.093-2.771-2.371-5.025-6.158-2.803
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues25.822.521.519.617.015.118.716.318.614.316.219.716.415.716.416.324.211.70.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value6.9576.7977.9247.3659.11525255.52921127.151.513139.955136.626-2.3217.955-1.3252.5920.761-2.263-3.371-2.771
Percentage of ProfitLoss19.524.637.041.457.8153.7143.242.7145.873.954.812.6110.388.784.892.3-38.2100.1-21.954.014.2-107.3-3624.7100.0
Percentage of Revenues5.05.57.27.18.725.026.66.123.714.69.02.018.114.520.510.80.00.00.00.00.00.00.00.0
Percentage of Revenues us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value282013106.648-8.86-7.6567.411-6.6364.3945.89110-1.2321.2712.3670.5558.396-0.0117.372.214.6044.372
Percentage of ProfitLoss80.575.463.058.642.2-53.7-43.257.3-45.826.145.287.4-10.311.315.27.7138.2-0.1121.946.085.8207.3
Percentage of Revenues20.816.912.310.06.4-8.7-8.08.2-7.45.17.413.7-1.71.83.70.90.00.00.00.00.00.0
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1348000.01286000.01170000.01183000.01151000.0774000.01154000.01153000.01108000.01112000.01029000.01022000.0919000.0867000.0920000.0921000.0940000.0983000.0684000.0686000.0629000.0598000.0652000.0654000.01083000.0638000.0468000.0316000.0342000.0342000.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-248740000.0-149400000.0-241180000.0-24600000.0-32786000.0-211110000.0-28659000.0-46298000.0-174370000.0-143710000.0-53953000.0-272590000.0-82841000.0-105100000.0-192160000.0-125320000.0-67203000.0-24604000.0-299770000.0-212790000.0-66541000.0-63769000.0-38398000.0-88973000.0-41089000.0-8449000.0-52607000.0-78631000.0-93485000.0-7276000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-179.9-121.5-211.4-22.5-31.4-202.6-28.5-45.7-182.7-158.7-60.4-319.3-103.9-137.4-261.9-182.0-104.4-40.00.00.00.00.00.00.00.00.00.00.00.00.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

nsa:A2016JointVenture, us-gaap:UnconsolidatedProperties, us-gaap:CorporateJointVenture


Payments
Period End2020-12-31
Value0.0
Percentage of PaymentsToAcquirePropertyPlantAndEquipment0.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value17186188-39.003-21.992158-43.841201271001221947731607650-1.6882721874647247327-1.884768952.658
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues124.270.3165.3-35.6-21.1152.4-43.619.9133.7110.813.9257.059.995.5219.2111.578.0-2.70.00.00.00.00.00.00.00.00.00.00.00.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value366180514104672440.03233101881702141882502202298822231411730279841520.02154722405.0
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value24016433710457461.3122532545112013410714533412613205157148234183367240160.3360.071430.501
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2925242322191918181716161414141111109.1027.8825.1064.6058.9763.4530.00.00.0
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:DebtInstrumentInterestRateStatedPercentage

nsa:A2030SeniorNotes, us-gaap:UnsecuredDebt, us-gaap:SubsequentEvent


Debt
Period End2020-08-04
Value0.0299
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations nsa:A2030SeniorNotes us-gaap:UnsecuredDebt us-gaap:SubsequentEvent0.0

nsa:A2032SeniorNotes, us-gaap:UnsecuredDebt, us-gaap:SubsequentEvent


Debt
Period End2020-08-04
Value0.0309
Percentage of DebtInstrumentInterestRateStatedPercentage103.3
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations nsa:A2032SeniorNotes us-gaap:UnsecuredDebt us-gaap:SubsequentEvent0.0

nsa:AssetAcquisitionAssetsAcquiredandLiabilitiesAssumedNet

nsa:AssetAcquisitionAssetsAcquiredandLiabilitiesAssumedNet


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value269166260233622232
Percentage of AssetAcquisitionAssetsAcquiredandLiabilitiesAssumedNet100.0100.0100.0100.0100.0100.0100.0

nsa:AssetAcquisitionAssetsAcquiredandLiabilitiesAssumedNet nsa:AssetAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:AssetAcquisitionFromPROs, srt:AffiliatedEntity


Asset
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value484819177.79.2
Percentage of AssetAcquisitionAssetsAcquiredandLiabilitiesAssumedNet29.218.780.748.13.528.7

nsa:AssetAcquisitionCapitalizedAcquisitionCosts

nsa:AssetAcquisitionCapitalizedAcquisitionCosts


Asset
Period End2021-03-312020-12-31
Value1300000.01400000.0
Percentage of AssetAcquisitionCapitalizedAcquisitionCosts100.0100.0

nsa:AssetAcquisitionConsiderationTransferred

nsa:AssetAcquisitionConsiderationTransferred


Asset
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value260233622232351851945110662135
Percentage of AssetAcquisitionConsiderationTransferred100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nsa:AssetAcquisitionConsiderationTransferred us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:RealEstatePurchaseFromAffiliateOfTrustee, srt:AffiliatedEntity


Asset
Period End2021-03-312020-12-312020-09-30
Value8.81.70000000000000080.0
Percentage of AssetAcquisitionConsiderationTransferred0.00.70.0

nsa:AssetAcquisitionConsiderationTransferred us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Asset
Period End2021-05-052021-02-262020-02-26
Value20484205
Percentage of AssetAcquisitionConsiderationTransferred0.00.00.0

nsa:AssetAcquisitionsEquityInterestsIssuedAndIssuableValue

nsa:AssetAcquisitionsEquityInterestsIssuedAndIssuableValue


Asset
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value203.4275.8427.2172.0050.9515332.03.660.022
Percentage of AssetAcquisitionsEquityInterestsIssuedAndIssuableValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

nsa:AssetAcquisitionsEquityInterestsIssuedAndIssuableValue us-gaap:CounterpartyName, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:MrJTimothyWarren, nsa:ClassAUnits, nsa:RealEstatePurchaseFromAffiliateOfTrustee, srt:AffiliatedEntity


Asset
Period End2021-03-312020-12-312020-09-30
Value1.10.10.0
Percentage of AssetAcquisitionsEquityInterestsIssuedAndIssuableValue0.00.50.0

nsa:AssetAcquisitionsEquityInterestsIssuedAndIssuableValue us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Asset
Period End2021-05-052021-02-262020-02-26
Value10.05.84.3
Percentage of AssetAcquisitionsEquityInterestsIssuedAndIssuableValue0.00.00.0

nsa:AssetAcquisitionsLiabilitiesAndOtherConsideration

nsa:AssetAcquisitionsLiabilitiesAndOtherConsideration


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1711000.01138000.02244000.0204000.0207000.0972000.0154000.0197000.01378000.0674000.0174000.0856000.0467000.0670000.0
Percentage of AssetAcquisitionsLiabilitiesAndOtherConsideration100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nsa:AssetAcquisitionsLiabilitiesAndOtherConsideration us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Asset
Period End2021-08-042021-05-052021-02-262020-02-26
Value200000.01400000.0600000.0900000.0
Percentage of AssetAcquisitionsLiabilitiesAndOtherConsideration0.00.00.00.0

nsa:DeprecationDepletionAndAmortizationExcludingFinancingCostsAndDiscounts

nsa:DeprecationDepletionAndAmortizationExcludingFinancingCostsAndDiscounts


Deprecation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3632292829292727252422
Percentage of DeprecationDepletionAndAmortizationExcludingFinancingCostsAndDiscounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nsa:EffectOfChangesInOwnershipForConsolidatedEntities us-gaap:StatementEquityComponents

nsa:EffectOfChangesInOwnershipForConsolidatedEntities

us-gaap:AccumulatedOtherComprehensiveIncome


Effect
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.2270.290.0240.0732.2650.0020.0280.182-0.8370.010.396
Percentage of EffectOfChangesInOwnershipForConsolidatedEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdditionalPaidInCapital


Effect
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value17181.171.286-15.8570.3419.1795.385350.87712
Percentage of EffectOfChangesInOwnershipForConsolidatedEntities7674.06545.94875.01761.6-700.117050.032782.12958.8-4276.88770.03187.1

us-gaap:NoncontrollingInterest


Effect
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-17.647-19.273-1.194-1.35913-0.343-9.207-5.567-34.96-0.887-13.017
Percentage of EffectOfChangesInOwnershipForConsolidatedEntities-7774.0-6645.9-4975.0-1861.6600.1-17150.0-32882.1-3058.84176.8-8870.0-3287.1

nsa:FairValueAssumptionsWeightedAverageContractualInterestRate us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

nsa:FairValueAssumptionsWeightedAverageContractualInterestRate

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-0.024.6904.641700.0483-0.0003000.04840000.04850-0.0033-0.00010.0521-0.0001-0.00020.00210.0507000.00040.0506
Percentage of FairValueAssumptionsWeightedAverageContractualInterestRate100.0100.00.0100.00.0100.0100.00.00.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0

nsa:FairValueAssumptionsWeightedAverageMarketInterestRate us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

nsa:FairValueAssumptionsWeightedAverageMarketInterestRate

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-0.152.380.062.035-0.00010.02510.0017-0.0028-0.00490.0388-0.0040.00180.00160.04230.0010.001-0.00080.03920.00730.00200.02960.0025-0.00370.00180.0335
Percentage of FairValueAssumptionsWeightedAverageMarketInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInEarningsCashFlowHedgeIneffectiveness us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInEarningsCashFlowHedgeIneffectiveness

us-gaap:InterestRateSwap, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument


Fair
Period End2021-06-302021-03-312020-06-302020-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-7000.0-17000.0-17000.0-17000.0-3000.0-2000.0-4000.0-8000.0-4000.00-7000.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInEarningsCashFlowHedgeIneffectiveness100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInEarningsReclassificationFromAOCICurrentPeriod us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInEarningsReclassificationFromAOCICurrentPeriod

us-gaap:InterestRateSwap, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument


Fair
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-5124000.0-4957000.0-4973000.0-3934000.0-612000.0939000.01277000.01276000.0986000.0599000.0281000.0-49000.0-350000.0-428000.0-760000.0-770000.0-849000.0-920000.0-506000.0-403000.0-2881000.0407000.0390000.0385000.0-1746000.0388000.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInEarningsReclassificationFromAOCICurrentPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInOtherComprehensiveIncomeLoss us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInOtherComprehensiveIncomeLoss

us-gaap:InterestRateSwap, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument


Fair
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-6.72520-0.562-10.423-66.369-17.433-19.075-8.039-13.1353.0784.6658.994.65-0.476-3.8521.613140.243-6.542-1.8950.977-1.258-0.104-1.166-0.9090.219
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nsa:IncreaseDecreaseInDeferredRevenueLeasesAndContractWithCustomer

nsa:IncreaseDecreaseInDeferredRevenueLeasesAndContractWithCustomer


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-397000.01191000.0-130000.0-382000.0-130000.0-334000.0-852000.0-461000.0-242000.01586000.0-240000.0179000.0-973000.0
Percentage of IncreaseDecreaseInDeferredRevenueLeasesAndContractWithCustomer100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nsa:IncrementalCommonSharesAttributableToDilutiveEffectOfOPUnitsOutstanding

nsa:IncrementalCommonSharesAttributableToDilutiveEffectOfOPUnitsOutstanding


Incremental
Period End2021-06-302021-03-31
Value2929
Percentage of IncrementalCommonSharesAttributableToDilutiveEffectOfOPUnitsOutstanding100.0100.0

nsa:IncrementalCommonSharesAttributableToDilutiveEffectOfSubordinatedPerformanceUnitsAndDownREITSubordinatedPerformanceUnitEquivalents

nsa:IncrementalCommonSharesAttributableToDilutiveEffectOfSubordinatedPerformanceUnitsAndDownREITSubordinatedPerformanceUnitEquivalents


Incremental
Period End2021-06-302021-03-31
Value2019
Percentage of IncrementalCommonSharesAttributableToDilutiveEffectOfSubordinatedPerformanceUnitsAndDownREITSubordinatedPerformanceUnitEquivalents100.0100.0

nsa:NoncontrollingInterestIncreaseFromInvestorsUponFormationOfQualifyingREIT

nsa:NoncontrollingInterestIncreaseFromInvestorsUponFormationOfQualifyingREIT


Noncontrolling
Period End2021-03-31
Value103000.0
Percentage of NoncontrollingInterestIncreaseFromInvestorsUponFormationOfQualifyingREIT100.0

nsa:NoncontrollingInterestIncreaseFromInvestorsUponFormationOfQualifyingREIT us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Noncontrolling
Period End2021-03-31
Value103000.0
Percentage of NoncontrollingInterestIncreaseFromInvestorsUponFormationOfQualifyingREIT100.0

nsa:PaymentsForAssetAcquisitions

nsa:PaymentsForAssetAcquisitions


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value243141237203021430341681604910262105
Percentage of PaymentsForAssetAcquisitions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nsa:PaymentsForAssetAcquisitions us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Payments
Period End2021-08-042021-05-052021-02-262020-02-26
Value5719278200
Percentage of PaymentsForAssetAcquisitions0.00.00.00.0

nsa:RedemptionAndConversionOfPartnershipInterests

nsa:RedemptionAndConversionOfPartnershipInterests


Redemption
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0.00.00.0330.00.0
Percentage of RedemptionAndConversionOfPartnershipInterests0.00.00.0100.00.00.0

nsa:ReductionInReceivablesFromPartnership

nsa:ReductionInReceivablesFromPartnership


Reduction
Period End2020-09-302020-06-302019-09-302019-03-312018-06-302018-03-31
Value37000.0225000.0137000.0139000.0156000.0191000.0
Percentage of ReductionInReceivablesFromPartnership100.0100.0100.0100.0100.0100.0

nsa:ReductionInReceivablesFromPartnership us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Reduction
Period End2020-09-302020-06-302019-09-302019-03-312018-06-302018-03-31
Value37000.0225000.0137000.0139000.0156000.0191000.0
Percentage of ReductionInReceivablesFromPartnership100.0100.0100.0100.0100.0100.0

nsa:SaleOfStockAveragePricePerShare us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock

nsa:SaleOfStockAveragePricePerShare

us-gaap:CommonClassA, us-gaap:SubsequentEvent, nsa:AttheMarketProgram


Sale
Period End2021-08-04
Value51.82
Percentage of SaleOfStockAveragePricePerShare100.0

nsa:SaleOfStockAveragePricePerShare us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock

us-gaap:CommonClassA, nsa:AttheMarketProgram


Sale
Period End2021-06-30
Value43.86
Percentage of SaleOfStockAveragePricePerShare0.0

nsa:StockIssuedDuringPeriodValueRestrictedStockAwardVestingAndForfeited

nsa:StockIssuedDuringPeriodValueRestrictedStockAwardVestingAndForfeited


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2000.0152000.0094000.00069000.000075000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardVestingAndForfeited100.0100.00.0100.00.00.0100.00.00.00.0100.0

nsa:StockIssuedDuringPeriodValueRestrictedStockAwardVestingAndForfeited us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2000.0152000.0094000.00069000.000075000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardVestingAndForfeited100.0100.00.0100.00.00.0100.00.00.00.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1348000.01286000.01183000.01151000.0774000.01153000.01108000.01112000.01029000.01022000.0919000.0867000.0920000.0921000.0940000.0983000.0684000.0686000.0629000.0598000.0652000.0654000.01083000.0638000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value113000.092000.0101000.0100000.076000.075000.082000.090000.063000.054000.066000.070000.062000.062000.060000.060000.029000.031000.030000.030000.036000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition8.47.28.58.79.86.57.48.16.15.37.28.16.76.76.46.14.24.54.85.05.5

us-gaap:NoncontrollingInterest


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1235000.01194000.01082000.01051000.0698000.01078000.01026000.01022000.0966000.0968000.0853000.0797000.0858000.0859000.0880000.0923000.0655000.0655000.0599000.0568000.0616000.0616000.01083000.0638000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition91.692.891.591.390.293.592.691.993.994.792.891.993.393.393.693.995.895.595.295.094.594.2100.0100.0

us-gaap:AmortizationOfDebtDiscountPremium

us-gaap:AmortizationOfDebtDiscountPremium


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-180000.0-177000.0-181000.0-183000.0-355000.0-356000.0-360000.0-359000.0-356000.0-352000.0-359000.0-366000.0-371000.0-373000.0-389000.0-390000.0-392000.0-399000.0-494000.0-531000.0-559000.0-467000.0-487000.0-480000.0-427000.0-353000.0-372000.0-40000.0-5000.0912000.0
Percentage of AmortizationOfDebtDiscountPremium100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetAcquisitionConsiderationTransferred

us-gaap:AssetAcquisitionConsiderationTransferred


Asset
Period End2021-06-302021-03-31
Value269165
Percentage of AssetAcquisitionConsiderationTransferred100.0100.0

us-gaap:AssetAcquisitionConsiderationTransferred us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType

nsa:RealEstatePurchaseFromAffiliateOfTrustee, srt:AffiliatedEntity, us-gaap:SubsequentEvent


Asset
Period End2021-08-04
Value11
Percentage of AssetAcquisitionConsiderationTransferred0.0

us-gaap:AssetAcquisitionConsiderationTransferred us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Asset
Period End2021-08-04
Value68
Percentage of AssetAcquisitionConsiderationTransferred0.0

us-gaap:AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable

us-gaap:AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable


Asset
Period End2021-06-302021-03-31
Value2422
Percentage of AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable100.0100.0

us-gaap:AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable us-gaap:CounterpartyName, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType

nsa:MrJTimothyWarren, nsa:ClassAUnits, nsa:RealEstatePurchaseFromAffiliateOfTrustee, srt:AffiliatedEntity, us-gaap:SubsequentEvent


Asset
Period End2021-08-04
Value0.5
Percentage of AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable0.0

us-gaap:AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Asset
Period End2021-08-04
Value11
Percentage of AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable0.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts

us-gaap:BusinessCombinationAcquisitionRelatedCosts


Business
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value118000.0292000.0596000.0252000.0833000.0321000.0305000.0157000.0192000.0141000.0150000.0180000.0143000.0139000.0167000.0144000.01813000.01737000.01700000.01300000.0573000.02874000.0719000.0599000.01195000.03092000.05089000.0182000.0
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value136000.0121000.0169000.0381000.020000.0399000.0830000.0314000.0419000.0
Percentage of BusinessCombinationAcquisitionRelatedCosts115.341.40.063.97.947.90.097.8137.4

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value3632292829292727252422222221201817181614131010109.9749.8778.4746.7774.6973.837
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value151515151515152021
Percentage of DepreciationAndAmortization42.647.951.952.952.052.055.175.384.7

us-gaap:DepreciationNonproduction

us-gaap:DepreciationNonproduction


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value3129272626252423222120191818161514141211108.68.27.46.56.3
Percentage of DepreciationNonproduction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther

us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther


Dilutive
Period End2021-06-302021-03-312019-06-302019-03-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value6.5936.4520.00.00.01.370.00.00.00.0-2.3520.0-1.3562.5710.727-2.275-3.3710.00.00.00.0
Percentage of DilutiveSecuritiesEffectOnBasicEarningsPerShareOther100.0100.00.00.00.0100.00.00.00.00.0100.00.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:DistributionMadeToLimitedPartnerCashDistributionsPaid

us-gaap:DistributionMadeToLimitedPartnerCashDistributionsPaid


Distribution
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value2420191716192019191716161514151413121311128.777175.4318.3936.2885.3783.6191.9221.648
Percentage of DistributionMadeToLimitedPartnerCashDistributionsPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock

us-gaap:DividendsCommonStock


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value292523221918181716161414141111109.1027.8825.1064.6054.6034.373
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value292523221918181716161414141111109.1027.8825.1064.6054.6034.373
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPreferredStock

us-gaap:DividendsPreferredStock


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.2763.2753.2753.2743.2733.2723.2572.5882.5872.5882.5872.588
Percentage of DividendsPreferredStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPreferredStock us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.2763.2753.2753.2743.2733.2723.2572.5882.5872.5882.5872.588
Percentage of DividendsPreferredStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:EquityMethodInvestmentDividendsOrDistributions


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value4.8844.0154.0063.8673.4363.3253.8513.6353.6653.43.9311.451.4671.3391.3271.3491.1661.2510.730.00.00.0
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiGainLoss


Equity
Period End2020-09-302020-06-302020-03-312019-06-302019-03-31
Value00-142000.000
Percentage of EquitySecuritiesFvNiGainLoss0.00.0100.00.00.0

us-gaap:FinitelivedIntangibleAssetsAcquired1 us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FinitelivedIntangibleAssetsAcquired1

us-gaap:LeasesAcquiredInPlace


Finitelived
Period End2021-06-302021-03-312020-12-31
Value6.93.95.7
Percentage of FinitelivedIntangibleAssetsAcquired1100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1174000.0759000.0516000.037000.052000.0-340000.0-8000.0-1214000.0-1646000.0-2102000.0-1713000.0242000.0100000.0-52000.0-40000.0-710000.0-765000.0-785000.0-1484000.0000
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value4.563-3.037-4.5638.9152.0071.086-5.1177.8412.2860.607-3.7728.5062.671-0.808-3.2445.093-0.547-0.102-1.6075.3992.4052.189-4.5923.4980.2161.147-4.0523.5990.2270.1
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1401000.0-686000.01885000.02767000.0-1330000.0118000.0-1383000.01392000.01889000.0-2008000.02257000.02540000.062000.0854000.01078000.0-1992000.02647000.0665000.01313000.0-98000.0-329000.01108000.0-34000.0-151000.0306000.0559000.0202000.0-52000.0-406000.0527000.0
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToEquityForwardAgreements

us-gaap:IncrementalCommonSharesAttributableToEquityForwardAgreements


Incremental
Period End2021-06-302021-03-31
Value-200000.0399000.0
Percentage of IncrementalCommonSharesAttributableToEquityForwardAgreements100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-31
Value91000.0133000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0

us-gaap:NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance

nsa:OPUnitsAndSubordinatedPerformanceUnits


Noncontrolling
Period End2021-06-302021-03-312020-06-302020-03-31
Value24225.8426.206
Percentage of NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance100.0100.0100.0100.0

nsa:SeriesAPreferredUnitsOPUnitsAndSubordinatedPerformanceUnits


Noncontrolling
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.4275.8426.2060.9515321.8993.660.022
Percentage of NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance0.0100.0100.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:StatementEquityComponents

nsa:OPUnitsAndSubordinatedPerformanceUnits, us-gaap:NoncontrollingInterest


Noncontrolling
Period End2021-06-302021-03-312020-06-302020-03-31
Value24225.8426.206
Percentage of NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance100.0100.0100.0100.0

nsa:SeriesAPreferredUnitsOPUnitsAndSubordinatedPerformanceUnits, us-gaap:NoncontrollingInterest


Noncontrolling
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.4275.8426.2060.9515321.8993.660.022
Percentage of NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance0.0100.0100.00.00.00.00.00.00.00.0

us-gaap:OperatingLeaseExpense us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:OperatingLeaseExpense

nsa:LeaseholdInterestProperties


Operating
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value400000.0500000.0400000.0400000.0400000.0400000.0400000.0400000.0
Percentage of OperatingLeaseExpense100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLeaseIncome

us-gaap:OperatingLeaseLeaseIncome


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value127113104999595929287828179
Percentage of OperatingLeaseLeaseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-6.725203.81-0.562-10.423-66.36914-17.433-19.075-8.039-13.1353.0784.665
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-5124000.0-4957000.0-5001000.0-4973000.0-3934000.0-612000.0-155000.0939000.01277000.01276000.0986000.0599000.0281000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherGeneralExpense

us-gaap:OtherGeneralExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value310000.0397000.0-522000.0479000.0462000.0389000.040000.0768000.0357000.0386000.0
Percentage of OtherGeneralExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic


Participating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value16000.011000.010000.011000.011000.012000.09000.08000.09000.09000.06000.07000.07000.07000.08000.07000.07000.06000.05000.04000.05000.04000.03000.03000.03000.00000
Percentage of ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:PaymentsForCapitalImprovements

us-gaap:PaymentsForCapitalImprovements


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value7.5025.6853.3774.4353.6744.9094.6685.4836.2354.2084.5384.356.2253.9014.6452.9263.9313.1542.944.5063.2760.6961.0870.9850.981.021.1550.8761.3480.464
Percentage of PaymentsForCapitalImprovements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForDepositsOnRealEstateAcquisitions

us-gaap:PaymentsForDepositsOnRealEstateAcquisitions


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1.432.530.5370.256-0.2060.54.438-0.175-0.6360.811-0.1972.888170.342
Percentage of PaymentsForDepositsOnRealEstateAcquisitions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDebtIssuanceCosts


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value163000.0332000.01606000.030000.0835000.0071000.07429000.0965000.022000.0997000.034000.01033000.0796000.0344000.0691000.031000.01315000.0761000.0292000.04499000.0113000.0131000.01164000.0-31000.0584000.0870000.0721000.052000.0131000.0
Percentage of PaymentsOfDebtIssuanceCosts100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.2763.2753.2753.2753.2743.2733.2733.2723.2572.5882.5872.5882.5872.5882.30.00.00.0
Percentage of PaymentsOfDividendsPreferredStockAndPreferenceStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:PaymentsOfStockIssuanceCosts

us-gaap:PaymentsOfStockIssuanceCosts


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value02161000.085000.00885000.00018000.0111000.050000.0409000.087000.013000.0218000.0427000.058000.0433000.0116000.0887000.0201000.0304000.07000.068000.03021000.01958000.0391000.01176000.0351000.0109000.064000.0
Percentage of PaymentsOfStockIssuanceCosts0.0100.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireCommercialRealEstate

us-gaap:PaymentsToAcquireCommercialRealEstate


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value24214123719292092834168139
Percentage of PaymentsToAcquireCommercialRealEstate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:PaymentsToAcquireEquityMethodInvestments


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1.2570.00.03.1250.00.00.00.00.01630.02.392.6420.0120.0784.873
Percentage of PaymentsToAcquireEquityMethodInvestments100.00.00.0100.00.00.00.00.00.0100.00.0100.0100.00.0100.00.0100.0100.0

us-gaap:PaymentsToAcquireFurnitureAndFixtures

us-gaap:PaymentsToAcquireFurnitureAndFixtures


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value137000.010000.02000.044000.0161000.0157000.0-6160000.06606000.0291000.0125000.0267000.055000.030000.051000.0294000.0137000.0117000.040000.055000.0136000.0127000.0209000.0127000.0233000.025000.033000.025000.028000.069000.024000.0
Percentage of PaymentsToAcquireFurnitureAndFixtures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-07-132018-09-302017-12-112017-12-312016-12-162016-12-312016-07-062015-12-31
Value103122605.868114.2490.00.0700.0-0.0751751751401401051392370.0
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromIssuanceOfCommonStock us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock

us-gaap:CommonClassA, us-gaap:SubsequentEvent, nsa:AttheMarketProgram


Proceeds
Period End2021-05-05
Value53
Percentage of ProceedsFromIssuanceOfCommonStock0.0

us-gaap:ProceedsFromIssuanceOfCommonStock us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock

us-gaap:CommonClassA, nsa:AttheMarketProgram


Proceeds
Period End2021-03-312020-09-302020-06-302020-03-312019-09-30
Value255.8124.20.0
Percentage of ProceedsFromIssuanceOfCommonStock20.598.8100.798.80.0

us-gaap:ProceedsFromPartnershipContribution

us-gaap:ProceedsFromPartnershipContribution


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value00661000.00642000.0311000.00318000.0605000.00294000.0312000.0302000.0281000.0561000.06000.0545000.010000.0524000.0265000.04000.0265000.0246000.0500000.00000
Percentage of ProceedsFromPartnershipContribution0.00.0100.00.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:ProceedsFromPaymentsToMinorityShareholders

us-gaap:ProceedsFromPaymentsToMinorityShareholders


Proceeds
Period End2021-06-302021-03-31
Value0103000.0
Percentage of ProceedsFromPaymentsToMinorityShareholders0.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities


Proceeds
Period End2020-09-302020-06-302020-03-312019-06-302019-03-31
Value007560000.000
Percentage of ProceedsFromSaleAndMaturityOfMarketableSecurities0.00.0100.00.00.0

us-gaap:PropertyPlantAndEquipmentAdditions us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PropertyPlantAndEquipmentAdditions

us-gaap:LandAndBuilding


Property
Period End2021-06-302021-03-312020-12-31
Value262162254
Percentage of PropertyPlantAndEquipmentAdditions100.0100.0100.0

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty us-gaap:CounterpartyName, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty

nsa:ParticipatingRegionalOperator, nsa:DueDiligenceCosts, srt:Management


Related
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value200000.0300000.0300000.00100000.0200000.00100000.0300000.0300000.0100000.0100000.0100000.0
Percentage of RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType

nsa:DueDiligenceCosts, srt:Management, us-gaap:SubsequentEvent


Related
Period End2021-05-052021-02-262020-02-26
Value100000.0200000.0200000.0
Percentage of RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty0.00.00.0

us-gaap:RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty us-gaap:CounterpartyName, us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty

nsa:ParticipatingRegionalOperator, nsa:SupervisoryAndAdministrativeFeeAgreement, srt:Management


Related
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4.94.23.8999999999999983.73.55.35.25.24.94.74.34.4
Percentage of RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SaleOfStockConsiderationReceivedOnTransaction us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock

us-gaap:SaleOfStockConsiderationReceivedOnTransaction

us-gaap:CommonClassA, us-gaap:SubsequentEvent, nsa:AttheMarketProgram


Sale
Period End2021-08-04
Value40
Percentage of SaleOfStockConsiderationReceivedOnTransaction100.0

us-gaap:CommonClassA, us-gaap:SubsequentEvent, nsa:FollowOnPublicOffering


Sale
Period End2021-07-23
Value497
Percentage of SaleOfStockConsiderationReceivedOnTransaction0.0

us-gaap:CommonClassA, us-gaap:SubsequentEvent, nsa:PublicStockOfferingFromThirdParties


Sale
Period End2020-10-06
Value162
Percentage of SaleOfStockConsiderationReceivedOnTransaction0.0

us-gaap:SaleOfStockConsiderationReceivedOnTransaction us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock

us-gaap:CommonClassA, nsa:AttheMarketProgram


Sale
Period End2021-06-30
Value103
Percentage of SaleOfStockConsiderationReceivedOnTransaction0.0

us-gaap:CommonClassA, nsa:PublicStockOfferingFromThirdParties


Sale
Period End2021-03-222020-12-302020-09-302020-10-06
Value9760160162
Percentage of SaleOfStockConsiderationReceivedOnTransaction0.00.00.00.0

us-gaap:StockIssued1

us-gaap:StockIssued1


Stock
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-312015-12-312014-12-31
Value0.00.00.0100.00.00.00.448
Percentage of StockIssued10.00.00.0100.00.00.00.0100.0

us-gaap:StockIssuedDuringPeriodValueConversionOfUnits us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueConversionOfUnits

us-gaap:CommonClassA, us-gaap:AccumulatedOtherComprehensiveIncome


Stock
Period End2020-09-302019-09-30
Value-0.249-0.007
Percentage of StockIssuedDuringPeriodValueConversionOfUnits100.0100.0

us-gaap:CommonClassA, us-gaap:AdditionalPaidInCapital


Stock
Period End2020-09-302019-09-30
Value3.4170.277
Percentage of StockIssuedDuringPeriodValueConversionOfUnits-1372.3-3957.1

us-gaap:CommonClassA, us-gaap:CommonStock


Stock
Period End2020-09-302019-09-30
Value0.0030.0
Percentage of StockIssuedDuringPeriodValueConversionOfUnits-1.2-0.0

us-gaap:CommonClassA, us-gaap:NoncontrollingInterest


Stock
Period End2020-09-302019-09-30
Value-3.171-0.27
Percentage of StockIssuedDuringPeriodValueConversionOfUnits1273.53857.1

us-gaap:StockIssuedDuringPeriodValueConversionOfUnits us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-0.052-0.108-0.238-0.062-0.0070.0280.0070.0380.0470.0360.0510.0440.0060.0170.2220.013
Percentage of StockIssuedDuringPeriodValueConversionOfUnits0.00.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1.5542.3323.4381.4370.2771.8390.251.1441.5341.3051.9212.7690.4650.992143.516
Percentage of StockIssuedDuringPeriodValueConversionOfUnits0.00.00.00.0-3957.10.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value0.0010.0020.0030.0010.0020.00.0020.0010.0010.0010.0020.00.0010.0110.003
Percentage of StockIssuedDuringPeriodValueConversionOfUnits0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-1.503-2.226-3.203-1.376-0.27-1.869-0.257-1.184-1.582-1.342-1.973-2.815-0.471-1.01-14.396-3.532
Percentage of StockIssuedDuringPeriodValueConversionOfUnits0.00.00.00.03857.10.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockRedeemedOrCalledDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:StockRedeemedOrCalledDuringPeriodValue

us-gaap:NoncontrollingInterest


Stock
Period End2021-06-302020-03-312019-09-30
Value100000.0140000.01056000.0
Percentage of StockRedeemedOrCalledDuringPeriodValue100.0100.0100.0

us-gaap:PreferredStock


Stock
Period End2021-06-302020-03-312019-09-30
Value-100000.0-140000.0-1036000.0
Percentage of StockRedeemedOrCalledDuringPeriodValue-100.0-100.0-98.1

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersBasic

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersBasic


Undistributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value251714107.1373.3639.806-12.14-10.9224.814-9.2291.7993.2977.865-3.541.2642.360.5498.391-0.015
Percentage of UndistributedEarningsLossAvailableToCommonShareholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersDiluted

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersDiluted


Undistributed
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-312018-06-302018-03-312017-06-30
Value32247.1373.363-10.9224.8143.2979.2352.36
Percentage of UndistributedEarningsLossAvailableToCommonShareholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0

nsa:CommonAndPreferredStockRemainingValueOfSharesAuthorizedUnderATMProgram us-gaap:SubsidiarySaleOfStock

nsa:CommonAndPreferredStockRemainingValueOfSharesAuthorizedUnderATMProgram

nsa:PriorAtTheMarketSalesAgreement


Common
Period End2021-05-19
Value31
Percentage of CommonAndPreferredStockRemainingValueOfSharesAuthorizedUnderATMProgram100.0

nsa:DebtLongtermAndShorttermCombinedAmountsGross

nsa:DebtLongtermAndShorttermCombinedAmountsGross


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value206319381922174617461736153915391277
Percentage of DebtLongtermAndShorttermCombinedAmountsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0

nsa:DebtLongtermAndShorttermCombinedAmountsGross us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:VariableInterestEntityPrimaryBeneficiary, nsa:FixedRateMortgages, us-gaap:Mortgages


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value100100100100135135136138
Percentage of DebtLongtermAndShorttermCombinedAmountsGross4.95.25.25.87.87.88.910.8

nsa:DebtLongtermAndShorttermCombinedAmountsGross us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

nsa:TrancheATermLoan, nsa:CreditFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value125125125125125125125125235
Percentage of DebtLongtermAndShorttermCombinedAmountsGross6.16.46.57.27.27.28.18.118.4

nsa:TrancheBTermLoan, nsa:CreditFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value250250250250250250250250155
Percentage of DebtLongtermAndShorttermCombinedAmountsGross12.112.913.014.314.314.416.216.212.1

nsa:TrancheCTermLoan, nsa:CreditFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value225225225225225225225225105
Percentage of DebtLongtermAndShorttermCombinedAmountsGross10.911.611.712.912.913.014.614.68.2

nsa:TrancheDTermLoan, nsa:CreditFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value175175175175175175175175125
Percentage of DebtLongtermAndShorttermCombinedAmountsGross8.59.09.110.010.010.111.411.49.8

us-gaap:RevolvingCreditFacility, nsa:CreditFacility, us-gaap:LineOfCredit


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value2651901742462112000.00.0139
Percentage of DebtLongtermAndShorttermCombinedAmountsGross12.99.89.114.112.111.50.00.010.9

nsa:DebtLongtermAndShorttermCombinedAmountsGross us-gaap:DebtInstrument, us-gaap:LongtermDebtType

nsa:A2029SeniorNotes, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value1001001001001001001001000.0
Percentage of DebtLongtermAndShorttermCombinedAmountsGross4.85.25.25.75.75.86.56.50.0

nsa:A2029TermLoanFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value1001001001001001001001000.0
Percentage of DebtLongtermAndShorttermCombinedAmountsGross4.85.25.25.75.75.86.56.50.0

nsa:A2031SeniorNotes, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value50505050505050500.0
Percentage of DebtLongtermAndShorttermCombinedAmountsGross2.42.62.62.92.92.93.23.20.0

nsa:A2033SeniorNotes, us-gaap:UnsecuredDebt


Debt
Period End2021-06-30
Value55
Percentage of DebtLongtermAndShorttermCombinedAmountsGross2.7

nsa:FixedRateMortgages, us-gaap:Mortgages


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value218222223224260261264264268
Percentage of DebtLongtermAndShorttermCombinedAmountsGross10.611.511.612.914.915.117.217.221.0

nsa:DeferredFinanceCostsAndDebtPremium

nsa:DeferredFinanceCostsAndDebtPremium


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value4968000.05279000.05643000.04450000.04805000.05011000.05213000.0-5387000.0-454000.0566000.0464000.01359000.01329000.02435000.03106000.03176000.04208000.04330000.05760000.06035000.06456000.0-2636000.0-2909000.0
Percentage of DeferredFinanceCostsAndDebtPremium100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasis us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

nsa:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasis

us-gaap:InterestRateSwap, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-53.638-52.044-77.918-86.918-91.329-84.84-19.083-33.844-15.4724.8814282521127.4117.456108.159-7.326-8.493-2.457-0.972-2.481-1.36-1.646-0.865-0.364-0.9710.00.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

nsa:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFiveGross

nsa:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFiveGross


Long
Period End2021-06-302021-03-312020-09-30
Value738683610
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFiveGross100.0100.0100.0

nsa:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearOneGross

nsa:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearOneGross


Long
Period End2021-06-302021-03-312020-09-30
Value4374000.04374000.07603000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearOneGross100.0100.0100.0

nsa:LongTermDebtPremiumAmortizationRepaymentsOfPrincipalAfterYearFive

nsa:LongTermDebtPremiumAmortizationRepaymentsOfPrincipalAfterYearFive


Long
Period End2021-06-302021-03-312020-09-30
Value-501000.0-560000.0-1132000.0
Percentage of LongTermDebtPremiumAmortizationRepaymentsOfPrincipalAfterYearFive100.0100.0100.0

nsa:LongTermDebtPremiumAmortizationRepaymentsOfPrincipalInYearOne

nsa:LongTermDebtPremiumAmortizationRepaymentsOfPrincipalInYearOne


Long
Period End2021-06-302021-03-312020-09-30
Value1689000.01679000.01522000.0
Percentage of LongTermDebtPremiumAmortizationRepaymentsOfPrincipalInYearOne100.0100.0100.0

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationAfterYearFive

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationAfterYearFive


Long
Period End2020-12-31
Value-323000.0
Percentage of LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationAfterYearFive100.0

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInNextTwelveMonths

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInNextTwelveMonths


Long
Period End2020-12-31
Value1675000.0
Percentage of LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInNextTwelveMonths100.0

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearFive

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearFive


Long
Period End2020-12-31
Value371000.0
Percentage of LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearFive100.0

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearFour

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearFour


Long
Period End2020-12-31
Value943000.0
Percentage of LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearFour100.0

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearThree

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearThree


Long
Period End2020-12-31
Value1312000.0
Percentage of LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearThree100.0

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearTwo

nsa:LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearTwo


Long
Period End2020-12-31
Value1665000.0
Percentage of LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearTwo100.0

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearFiveGross

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearFiveGross


Longterm
Period End2021-06-302021-03-312020-12-312020-09-30
Value177177227227
Percentage of LongtermDebtMaturitiesRepaymentsOfPrincipalInYearFiveGross100.0100.0100.0100.0

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearFourGross

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearFourGross


Longterm
Period End2021-06-302021-03-312020-12-312020-09-30
Value227227445518
Percentage of LongtermDebtMaturitiesRepaymentsOfPrincipalInYearFourGross100.0100.0100.0100.0

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearThreeGross

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearThreeGross


Longterm
Period End2021-06-302021-03-312020-12-312020-09-30
Value537462376377
Percentage of LongtermDebtMaturitiesRepaymentsOfPrincipalInYearThreeGross100.0100.0100.0100.0

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearTwoGross

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalInYearTwoGross


Longterm
Period End2021-06-302021-03-312020-12-312020-09-30
Value3763764.3744.205
Percentage of LongtermDebtMaturitiesRepaymentsOfPrincipalInYearTwoGross100.0100.0100.0100.0

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalRemainderOfYearGross

nsa:LongtermDebtMaturitiesRepaymentsOfPrincipalRemainderOfYearGross


Longterm
Period End2021-06-302021-03-312020-09-30
Value2096000.06605000.01040000.0
Percentage of LongtermDebtMaturitiesRepaymentsOfPrincipalRemainderOfYearGross100.0100.0100.0

nsa:LongtermDebtMaturitiesRepaymentsofPrincipalAfterYearFiveGross

nsa:LongtermDebtMaturitiesRepaymentsofPrincipalAfterYearFiveGross


Longterm
Period End2020-12-31
Value860
Percentage of LongtermDebtMaturitiesRepaymentsofPrincipalAfterYearFiveGross100.0

nsa:LongtermDebtMaturitiesRepaymentsofPrincipalDueNextTwelveMonthsGross

nsa:LongtermDebtMaturitiesRepaymentsofPrincipalDueNextTwelveMonthsGross


Longterm
Period End2020-12-31
Value7670000.0
Percentage of LongtermDebtMaturitiesRepaymentsofPrincipalDueNextTwelveMonthsGross100.0

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearFive

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearFive


Longterm
Period End2021-06-302021-03-312020-09-30
Value260000.0250000.0218000.0
Percentage of LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearFive100.0100.0100.0

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearFour

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearFour


Longterm
Period End2021-06-302021-03-312020-09-30
Value384000.0375000.0790000.0
Percentage of LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearFour100.0100.0100.0

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearThree

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearThree


Longterm
Period End2021-06-302021-03-312020-09-30
Value960000.0950000.01159000.0
Percentage of LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearThree100.0100.0100.0

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearTwo

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearTwo


Longterm
Period End2021-06-302021-03-312020-09-30
Value1333000.01323000.01512000.0
Percentage of LongtermDebtPremiumAmortizationRepaymentsOfPrincipalInYearTwo100.0100.0100.0

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalRemainderOfYear

nsa:LongtermDebtPremiumAmortizationRepaymentsOfPrincipalRemainderOfYear


Longterm
Period End2021-06-302021-03-312020-09-30
Value843000.01262000.0381000.0
Percentage of LongtermDebtPremiumAmortizationRepaymentsOfPrincipalRemainderOfYear100.0100.0100.0

nsa:NumberOfStorageUnits

nsa:NumberOfStorageUnits


Number
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value438000.0425000.0396000.0394000.0392000.0376000.0
Percentage of NumberOfStorageUnits100.0100.0100.0100.0100.0100.0

nsa:NumberOfStorageUnits us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:A2018JointVenture, us-gaap:UnconsolidatedProperties, us-gaap:CorporateJointVenture


Number
Period End2021-06-302021-03-312020-09-302020-06-30
Value64000.064000.063000.064000.0
Percentage of NumberOfStorageUnits14.615.115.916.2

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:UnconsolidatedProperties, us-gaap:CorporateJointVenture


Number
Period End2021-06-302021-03-312020-09-302020-06-30
Value104000.0104000.0103000.0104000.0
Percentage of NumberOfStorageUnits23.724.526.026.4

nsa:NumberOfStorageUnits us-gaap:RealEstateProperties

us-gaap:ConsolidatedProperties


Number
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value334000.0321000.0293000.0291000.0288000.0273000.0
Percentage of NumberOfStorageUnits76.375.574.073.973.572.6

nsa:RelatedPartyCapitalContributions us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:RelatedPartyCapitalContributions

nsa:A2018JointVenture, us-gaap:CorporateJointVenture


Related
Period End2020-12-31
Value5000000.0
Percentage of RelatedPartyCapitalContributions100.0

nsa:RelatedPartyLongTermDebt us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:RelatedPartyLongTermDebt

nsa:A2018JointVenture, us-gaap:CorporateJointVenture


Related
Period End2020-12-31
Value4700000.0
Percentage of RelatedPartyLongTermDebt100.0

nsa:RelatedPartyOwnershipInterest us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:RelatedPartyOwnershipInterest

nsa:SecurCare, srt:BoardOfDirectorsChairman


Related
Period End2020-09-302020-06-302020-03-31
Value53.00.530.53
Percentage of RelatedPartyOwnershipInterest100.0100.0100.0

nsa:SecurCare, srt:ChiefOperatingOfficer


Related
Period End2020-09-302020-06-302020-03-31
Value24.00.240.24
Percentage of RelatedPartyOwnershipInterest45.345.345.3

srt:RealEstateAndAccumulatedDepreciationAmountOfEncumbrances

srt:RealEstateAndAccumulatedDepreciationAmountOfEncumbrances


Real
Period End2020-12-31
Value223
Percentage of RealEstateAndAccumulatedDepreciationAmountOfEncumbrances100.0

srt:RealEstateFederalIncomeTaxBasis

srt:RealEstateFederalIncomeTaxBasis


Real
Period End2020-12-31
Value3200
Percentage of RealEstateFederalIncomeTaxBasis100.0

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value484247514240577853373336262424272121212924149.69416141310
Percentage of AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableNet


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2800000.02164000.02734000.02479000.02776000.02816000.02809000.03367000.03374000.03208000.03402000.03443000.02481000.02198000.02274000.02007000.01766000.01580000.01898000.01562000.01282000.01013000.01093000.01041000.0893000.0709000.0979000.0
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableRelatedParties

us-gaap:AccountsReceivableRelatedParties


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2848000.02107000.02974000.02641000.01476000.01256000.02773000.01949000.01664000.0737000.02027000.01313000.01245000.074000.0979000.0790000.0739000.0377000.0601000.0438000.0372000.0165000.0232000.0199000.0336000.0208000.0416000.0
Percentage of AccountsReceivableRelatedParties100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockValueOutstanding

us-gaap:CommonStockValueOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value777000.0752000.0713000.0692000.0687000.0680000.0597000.0593000.0593000.0567000.0567000.0565000.0505000.0504000.0503000.0443000.0443000.0442000.0431000.0359000.0232000.0230000.0230000.0230000.0230000.000
Percentage of CommonStockValueOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:ContractWithCustomerLiability us-gaap:ProductOrService

us-gaap:ContractWithCustomerLiability

nsa:AcquisitionFees


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value900000.01100000.01300000.01400000.01900000.02400000.02800000.03200000.03700000.04100000.04600000.05000000.02800000.0
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:DebtInstrumentFaceAmount

nsa:A2030SeniorNotes, us-gaap:UnsecuredDebt, us-gaap:SubsequentEvent


Debt
Period End2020-08-04
Value150
Percentage of DebtInstrumentFaceAmount100.0

nsa:A2032SeniorNotes, us-gaap:UnsecuredDebt, us-gaap:SubsequentEvent


Debt
Period End2020-08-04
Value100
Percentage of DebtInstrumentFaceAmount66.7

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateEffectivePercentage

nsa:TrancheATermLoan, nsa:CreditFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3.743.743.743.740.03740.03740.03740.03740.02910.02910.02910.02910.02910.02910.02630.02630.0260.0260.0261
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nsa:TrancheBTermLoan, nsa:CreditFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2.912.912.912.910.02910.02910.02910.02910.02940.02940.02940.02940.02940.03240.03240.03240.03240.03240.0315
Percentage of DebtInstrumentInterestRateEffectivePercentage77.877.877.877.877.877.877.877.8101.0101.0101.0101.0101.0111.3123.2123.2124.6124.6120.7

nsa:TrancheCTermLoan, nsa:CreditFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.912.82.82.80.0280.0280.0280.0280.03710.03710.03710.03710.03710.03710.03710.03710.03710.0371
Percentage of DebtInstrumentInterestRateEffectivePercentage77.874.974.974.974.974.974.974.9127.5127.5127.5127.5127.5127.5141.1141.1142.7142.7

nsa:TrancheDTermLoan, nsa:CreditFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.573.573.573.570.03570.03570.03570.03570.03790.03790.03790.03790.03790.0379
Percentage of DebtInstrumentInterestRateEffectivePercentage95.595.595.595.595.595.595.595.5130.2130.2130.2130.2130.2130.2

us-gaap:RevolvingCreditFacility, nsa:CreditFacility, us-gaap:LineOfCredit


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1.41.411.441.450.01460.02290.03060.03320.0380.03890.0390.03660.03490.03280.02960.02630.02620.02380.02170.01930.01870.02040.02030.01790.01790.02780.0203
Percentage of DebtInstrumentInterestRateEffectivePercentage37.437.738.538.839.061.281.888.8130.6133.7134.0125.8119.9112.7112.5100.0100.891.583.10.00.00.00.00.00.00.00.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType

nsa:A2028TermLoanFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4.624.624.624.620.04620.04620.04620.04620.04620.04620.0462
Percentage of DebtInstrumentInterestRateEffectivePercentage123.5123.5123.5123.5123.5123.5123.5123.5158.8158.8158.8

nsa:A2029SeniorNotes, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.983.983.983.980.03980.03980.03980.0398
Percentage of DebtInstrumentInterestRateEffectivePercentage106.4106.4106.4106.4106.4106.4106.4106.4

nsa:A2029TermLoanFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-04-24
Value4.274.274.274.270.04270.04270.04270.04270.04270.0427
Percentage of DebtInstrumentInterestRateEffectivePercentage114.2114.2114.2114.2114.2114.2114.2114.2146.70.0

nsa:A2031SeniorNotes, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4.084.084.084.080.04080.04080.04080.0408
Percentage of DebtInstrumentInterestRateEffectivePercentage109.1109.1109.1109.1109.1109.1109.1109.1

nsa:A2033SeniorNotes, us-gaap:UnsecuredDebt


Debt
Period End2021-06-30
Value3.1
Percentage of DebtInstrumentInterestRateEffectivePercentage82.9

nsa:FixedRateMortgages, us-gaap:Mortgages


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value4.244.264.264.260.04180.04180.04160.04180.04180.04180.04180.04180.04170.04170.04150.04150.04150.04130.04070.04050.040.03970.03930.03930.03930.04070.0393
Percentage of DebtInstrumentInterestRateEffectivePercentage113.4113.9113.9113.9111.8111.8111.2111.8143.6143.6143.6143.6143.3143.3157.8157.8159.6158.8155.90.00.00.00.00.00.00.00.0

nsa:TermLoanFacility, us-gaap:UnsecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2.832.832.832.830.02830.02830.02830.02830.02830.03130.03130.03030.02950.03080.03080.03080.03080.03080.03080.03080.03080.0308
Percentage of DebtInstrumentInterestRateEffectivePercentage75.775.775.775.775.775.775.775.797.3107.6107.6104.1101.4105.8117.1117.1118.5118.5118.00.00.00.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:Range, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

srt:Maximum, nsa:FixedRateMortgages, us-gaap:Mortgages


Debt
Period End2020-12-312019-12-31
Value5.00.05
Percentage of DebtInstrumentInterestRateEffectivePercentage133.7133.7

srt:Minimum, nsa:FixedRateMortgages, us-gaap:Mortgages


Debt
Period End2020-12-312019-12-31
Value3.630.0363
Percentage of DebtInstrumentInterestRateEffectivePercentage97.197.1

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet


Debt
Period End2020-12-312019-12-312018-12-31
Value5643000.05213000.0-464000.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet100.0100.0100.0

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DebtLongtermAndShorttermCombinedAmount


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value205819321916174117411731153415331469141412781229114910699581071969893878722754634570495407618597
Percentage of DebtLongtermAndShorttermCombinedAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtLongtermAndShorttermCombinedAmount us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value100010001000989989989
Percentage of DebtLongtermAndShorttermCombinedAmount48.651.852.256.856.864.5

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredFinanceCostsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2113000.02293000.02496000.02698000.02900000.03067000.03264000.03464000.0810000.01017000.01260000.01503000.01746000.01943000.02185000.02427000.02668000.02836000.03069000.02911000.03103000.01530000.04740000.05203000.04785000.05755000.06346000.0
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenue

us-gaap:DeferredRevenue


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value19181615151615161615131312121212127.8447.396.0585.5135.3135.1784.6064.176
Percentage of DeferredRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssetsLiabilitiesAtFairValueNet us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

us-gaap:DerivativeAssetsLiabilitiesAtFairValueNet

us-gaap:InterestRateSwap, us-gaap:CashFlowHedging, us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2020-12-312019-12-312018-12-312017-12-31
Value-77.918-19.0831412
Percentage of DerivativeAssetsLiabilitiesAtFairValueNet100.0100.0100.0100.0

us-gaap:DerivativeLiabilities

us-gaap:DerivativeLiabilities


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value53527786918419
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:DueFromJointVentures

us-gaap:DueFromJointVentures


Due
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value4691000.05414000.05825000.05154000.04385000.04868000.04765000.06427000.04454000.02818000.04573000.03290000.01421000.01504000.01200000.0802000.0767000.0897000.01093000.00
Percentage of DueFromJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:EarnestMoneyDeposits

us-gaap:EarnestMoneyDeposits


Earnest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1.12.531.0870.550.2940.54.4380.00.2750.9112021181.0925.052.40.6920.2650.4775.5472.0650.2290.7633.2830.171.1510.77
Percentage of EarnestMoneyDeposits100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

nsa:LongTermIncentivePlanUnit


Employee
Period End2020-12-312019-12-312018-12-312017-12-31
Value4400000.03700000.03700000.03400000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions us-gaap:AwardType, us-gaap:PlanName

us-gaap:RestrictedStock, nsa:A2015NationalStorageAffiliatesTrustEquityIncentivePlan


Employee
Period End2020-12-312019-12-312018-12-312017-12-31
Value600000.0400000.0300000.0300000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions13.610.88.18.8

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentOwnershipPercentage

nsa:A2016JointVenture


Equity
Period End2021-06-302021-03-312020-09-302020-06-30
Value25.025.025.00.25
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0100.0

nsa:A2018JointVenture


Equity
Period End2021-06-302021-03-312020-09-302020-06-30
Value25.025.025.00.25
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:A2016JointVenture, us-gaap:UnconsolidatedProperties, us-gaap:CorporateJointVenture


Equity
Period End2020-12-31
Value25.0
Percentage of EquityMethodInvestmentOwnershipPercentage0.0

nsa:A2018JointVenture, us-gaap:UnconsolidatedProperties, us-gaap:CorporateJointVenture


Equity
Period End2020-12-31
Value25.0
Percentage of EquityMethodInvestmentOwnershipPercentage0.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:A2016JointVenture, us-gaap:CorporateJointVenture


Equity
Period End2020-09-302020-06-30
Value25.00.25
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0

nsa:A2018JointVenture, us-gaap:CorporateJointVenture


Equity
Period End2020-12-312020-09-302020-06-30
Value25.025.00.25
Percentage of EquityMethodInvestmentOwnershipPercentage0.0100.0100.0

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value195199202206210213214228233238245250889089888979810.0
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

nsa:TenantReinsuranceIntangible


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1196000.01049000.0903000.0756000.0610000.0464000.0317000.0171000.0100000.00
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:LeasesAcquiredInPlace


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value6327000.03219000.05322000.04156000.03336000.05538000.07267000.05627000.05568000.04193000.05090000.07638000.07711000.06217000.03914000.06171000.08068000.09964000.07831000.04312000.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization529.0306.9589.4549.7546.91193.52292.43290.65568.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ServiceAgreements


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3730000.03476000.03222000.02969000.02715000.02460000.02272000.02095000.01918000.01741000.01564000.01387000.01210000.01033000.0856000.0679000.0502000.0325000.0148000.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization311.9331.4356.8392.7445.1530.2716.71225.11918.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2020-12-31
Value17
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2020-12-31
Value8049000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-31
Value1600000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2020-12-31
Value1603000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2020-12-31
Value1604000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2020-12-31
Value1604000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0

us-gaap:FixturesAndEquipmentGross

us-gaap:FixturesAndEquipmentGross


Fixtures
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value8474000.08236000.07839000.07549000.07287000.07002000.06610000.06452000.06345000.06127000.05987000.05876000.05713000.05700000.05470000.05034000.04918000.04915000.04598000.03653000.03365000.02357000.02241000.02181000.02034000.02038000.01966000.0
Percentage of FixturesAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet

us-gaap:InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-30
Value-20200000.0-20100000.0-20000000.0-20000000.0
Percentage of InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet100.0100.0100.0100.0

us-gaap:InterestRateDerivativeLiabilitiesAtFairValue

us-gaap:InterestRateDerivativeLiabilitiesAtFairValue


Interest
Period End2020-12-312019-12-31
Value7719
Percentage of InterestRateDerivativeLiabilitiesAtFairValue100.0100.0

us-gaap:InvestmentBuildingAndBuildingImprovements

us-gaap:InvestmentBuildingAndBuildingImprovements


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value327730332892268326592627243524052369221420482001191018551741156814661417138311961046899829779701635600
Percentage of InvestmentBuildingAndBuildingImprovements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-312020-09-302020-06-302019-12-31
Value1915000.01915000.01915000.01705000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths nsa:LeaseArrangements

nsa:LeaseholdInterestProperties


Lessee
Period End2020-12-312019-12-31
Value1444000.01419000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths75.483.2

nsa:OfficeLeases


Lessee
Period End2020-12-312019-12-31
Value471000.0286000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths24.616.8

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

nsa:CorporateOffice


Lessee
Period End2020-09-302020-06-302019-12-31
Value471000.0471000.0286000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths24.624.616.8

nsa:LeaseholdInterestProperties


Lessee
Period End2020-09-302020-06-302019-12-31
Value1444000.01444000.01419000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths75.475.483.2

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value463000.0920000.01362000.0401000.0786000.01149000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

nsa:CorporateOffice


Lessee
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value106000.0205000.0291000.058000.0116000.0144000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear22.922.321.414.514.812.5

nsa:LeaseholdInterestProperties


Lessee
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value357000.0715000.01071000.0343000.0670000.01005000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear77.177.778.685.585.287.5

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:RevolvingCreditFacility, nsa:CreditFacility, us-gaap:LineOfCredit


Line
Period End2021-06-302021-03-312020-12-312020-09-302019-06-30
Value228303320247159
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0100.0100.0100.0100.0

us-gaap:LoansPayableFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:LoansPayableFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Loans
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value239243249252284287280285283279276272279283282285201204214227238188189193187165158
Percentage of LoansPayableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LoansPayableFairValueDisclosure us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Loans
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value218222223224260261264264265266268269273274271272188191201206213172182184182158153
Percentage of LoansPayableFairValueDisclosure91.091.689.588.891.491.194.192.793.995.797.098.997.997.096.195.793.693.994.390.489.491.596.595.397.195.496.9

us-gaap:EstimateOfFairValueFairValueDisclosure


Loans
Period End2020-12-312019-12-312018-12-31
Value249280276
Percentage of LoansPayableFairValueDisclosure100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value738683860611
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value2685000.02695000.05995000.06081000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value177177226226
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value226226445517
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value536461375375
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value3753752.7092.693
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear


Long
Period End2021-06-302021-03-312020-09-30
Value1253000.05343000.0659000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear100.0100.0100.0

us-gaap:LongTermDebtMeasurementInput us-gaap:Range, us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType

us-gaap:LongTermDebtMeasurementInput

srt:WeightedAverage, nsa:FixedRateMortgages, us-gaap:FairValueInputsLevel2, us-gaap:MeasurementInputDiscountRate


Long
Period End2020-12-312019-12-312018-12-31
Value2.120.03280.0417
Percentage of LongTermDebtMeasurementInput100.0100.0100.0

us-gaap:LongtermDebtWeightedAverageInterestRate us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongtermDebtWeightedAverageInterestRate

nsa:FixedRateMortgages, us-gaap:Mortgages


Longterm
Period End2020-12-312019-12-312018-12-31
Value4.690.04810.0485
Percentage of LongtermDebtWeightedAverageInterestRate100.0100.0100.0

us-gaap:NetRentableArea

us-gaap:NetRentableArea


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value555352494948474646444342342827252323232115
Percentage of NetRentableArea100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetRentableArea us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:A2018JointVenture, us-gaap:UnconsolidatedProperties, us-gaap:CorporateJointVenture


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value7.87.87.87.87.7
Percentage of NetRentableArea14.114.615.015.815.7

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:UnconsolidatedProperties, us-gaap:CorporateJointVenture


Net
Period End2021-06-302021-03-312020-09-302020-06-30
Value12121212
Percentage of NetRentableArea23.023.725.725.6

us-gaap:NetRentableArea us-gaap:RealEstateProperties

us-gaap:ConsolidatedProperties


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value42403936363634343332303029
Percentage of NetRentableArea77.076.375.674.374.474.073.272.972.771.870.770.685.3

us-gaap:NetRentableArea us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:UnconsolidatedProperties, us-gaap:CorporateJointVenture


Net
Period End2020-12-312020-03-312019-12-312019-09-302019-06-30
Value1212121212
Percentage of NetRentableArea24.426.026.827.127.3

us-gaap:NumberOfUnitsInRealEstateProperty

us-gaap:NumberOfUnitsInRealEstateProperty


Number
Period End2020-12-312019-12-31
Value413000.0378000.0
Percentage of NumberOfUnitsInRealEstateProperty100.0100.0

us-gaap:NumberOfUnitsInRealEstateProperty us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty

nsa:A2016JointVenture, us-gaap:UnconsolidatedProperties, us-gaap:CorporateJointVenture


Number
Period End2020-12-31
Value40000.0
Percentage of NumberOfUnitsInRealEstateProperty9.7

nsa:A2018JointVenture, us-gaap:UnconsolidatedProperties, us-gaap:CorporateJointVenture


Number
Period End2020-12-31
Value64000.0
Percentage of NumberOfUnitsInRealEstateProperty15.5

us-gaap:NumberOfUnitsInRealEstateProperty us-gaap:RealEstateProperties

us-gaap:ConsolidatedProperties


Number
Period End2020-12-312019-12-31
Value309000.0275000.0
Percentage of NumberOfUnitsInRealEstateProperty74.872.8

us-gaap:NumberOfUnitsInRealEstateProperty us-gaap:RealEstateProperties, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:UnconsolidatedProperties, us-gaap:CorporateJointVenture


Number
Period End2020-12-312019-12-31
Value104000.0103000.0
Percentage of NumberOfUnitsInRealEstateProperty25.227.2

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent nsa:LeaseArrangements

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

nsa:LeaseholdInterestProperties


Operating
Period End2020-12-312019-12-31
Value4.90.049
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

nsa:OfficeLeases


Operating
Period End2020-12-312019-12-31
Value3.80.041
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent77.683.7

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

nsa:CorporateOffice


Operating
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value3.80.0380.0380.0410.0410.041
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent0.00.00.00.00.00.0

nsa:LeaseholdInterestProperties


Operating
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value4.90.0490.0490.0490.0490.049
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent0.00.00.00.00.00.0

us-gaap:OtherLiabilities us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:OtherLiabilities

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value202021232020
Percentage of OtherLiabilities100.0100.0100.0100.0100.0100.0

us-gaap:PreferredStockValueOutstanding

us-gaap:PreferredStockValueOutstanding


Preferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value2182182182182182182182182171721721721721721720.0
Percentage of PreferredStockValueOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:PrepaidExpenseCurrentAndNoncurrent

us-gaap:PrepaidExpenseCurrentAndNoncurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value9129000.08098000.07099000.06320000.05190000.06237000.04762000.04779000.05444000.05628000.04266000.03900000.04111000.05403000.03949000.03693000.05622000.03275000.01879000.02047000.02367000.02926000.01486000.01509000.01691000.01788000.01017000.0
Percentage of PrepaidExpenseCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RealEstateAccumulatedDepreciation

us-gaap:RealEstateAccumulatedDepreciation


Real
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-03-31
Value44333724617011068392418
Percentage of RealEstateAccumulatedDepreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements


Real
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value29002441205417461388831
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements100.0100.0100.0100.0100.0100.0

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfLand

us-gaap:RealEstateAndAccumulatedDepreciationCarryingAmountOfLand


Real
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value738649583528456315
Percentage of RealEstateAndAccumulatedDepreciationCarryingAmountOfLand100.0100.0100.0100.0100.0100.0

us-gaap:RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts

us-gaap:RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts


Real
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1149372503423
Percentage of RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts100.0100.0100.0100.0100.0100.0

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements


Real
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value27852347198116961353807
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements100.0100.0100.0100.0100.0100.0

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfLand

us-gaap:RealEstateAndAccumulatedDepreciationInitialCostOfLand


Real
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value738649582528456315
Percentage of RealEstateAndAccumulatedDepreciationInitialCostOfLand100.0100.0100.0100.0100.0100.0

us-gaap:RealEstateGrossAtCarryingValue

us-gaap:RealEstateGrossAtCarryingValue


Real
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-03-31
Value363930912637227518441147838370178
Percentage of RealEstateGrossAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RealEstateInvestmentPropertyAccumulatedDepreciation

us-gaap:RealEstateInvestmentPropertyAccumulatedDepreciation


Real
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value5044734434163893633373132892672462262061881701531381241109786766859524539
Percentage of RealEstateInvestmentPropertyAccumulatedDepreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RealEstateInvestmentPropertyAtCost

us-gaap:RealEstateInvestmentPropertyAtCost


Real
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value407738073639338133543314309130553015283226372584247524112275207519541887184416191432123411471077972879838
Percentage of RealEstateInvestmentPropertyAtCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RealEstateInvestmentPropertyNet

us-gaap:RealEstateInvestmentPropertyNet


Real
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value357233343195296429642951275327412725256423912357226822232104192218151762173315211345115710791017920833799
Percentage of RealEstateInvestmentPropertyNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RealEstateInvestmentPropertyNet us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Real
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value434268225227229231233240
Percentage of RealEstateInvestmentPropertyNet12.18.17.07.77.77.88.510.1

us-gaap:RealEstateInvestmentPropertyNet us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees, us-gaap:CorporateJointVenture


Real
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value176917841799180318181835
Percentage of RealEstateInvestmentPropertyNet49.553.556.360.861.366.6

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:RestrictedCashAndCashEquivalents


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value3.5653.2972.9784.4865.6353.9973.7185.4574.4983.5453.1824.7047.1092.9293.0414.683133.0432.7674.6273.9162.8892.7123.7943.1492.4462.12
Percentage of RestrictedCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SaleOfStockPricePerShare us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock

us-gaap:SaleOfStockPricePerShare

us-gaap:CommonClassA, nsa:PublicStockOfferingFromThirdParties


Sale
Period End2020-09-30
Value32.832
Percentage of SaleOfStockPricePerShare100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

nsa:LongTermIncentivePlanUnitBasedOnPerformance


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value30.6927.7126.3527.630
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.00.0

nsa:LongTermIncentivePlanUnitBasedOnService


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value28.9326.5523.5420.3714.7410.4110.07
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue94.395.889.373.70.00.00.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:PlanName

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock, nsa:A2015NationalStorageAffiliatesTrustEquityIncentivePlan


Sharebased
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value32.6826.2624.8322.4312.412.40
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.00.0

us-gaap:SharesIssuedPricePerShare us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock

us-gaap:SharesIssuedPricePerShare

us-gaap:CommonClassA, us-gaap:SubsequentEvent, nsa:AttheMarketProgram


Shares
Period End2021-05-05
Value40.4
Percentage of SharesIssuedPricePerShare100.0

us-gaap:SharesIssuedPricePerShare us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock

us-gaap:CommonClassA, nsa:AtTheMarketProgram


Shares
Period End2020-12-312019-12-312016-12-31
Value33.0130.0619.54
Percentage of SharesIssuedPricePerShare0.00.00.0

us-gaap:CommonClassA, nsa:AttheMarketProgram


Shares
Period End2021-03-312020-09-302019-09-302019-06-30
Value39.4132.9230.0630.06
Percentage of SharesIssuedPricePerShare0.00.00.00.0

Line plots across dimensions of each concept


us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents
(None,)
Other Comprehensive Income Loss Net Of Taxus-gaap: Statement Equity Components
us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
(None,)
Profit Lossus-gaap: Statement Equity Components
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:AmortizationOfIntangibleAssets
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Amortization Of Intangible Assetsus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty
(None,)
Lessee Operating Lease Liability Payments Due Year Twous-gaap: Real Estate And Accumulated Depreciation Description Of Property
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
nsa:LeaseArrangements
(None,)
Lessee Operating Lease Liability Payments Due Year Twonsa: Lease Arrangements
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty
(None,)
Lessee Operating Lease Liability Payments Due Year Threeus-gaap: Real Estate And Accumulated Depreciation Description Of Property
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
nsa:LeaseArrangements
(None,)
Lessee Operating Lease Liability Payments Due Year Threensa: Lease Arrangements
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty
(None,)
Lessee Operating Lease Liability Payments Due Year Fourus-gaap: Real Estate And Accumulated Depreciation Description Of Property
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour
nsa:LeaseArrangements
(None,)
Lessee Operating Lease Liability Payments Due Year Fournsa: Lease Arrangements
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive
nsa:LeaseArrangements
(None,)
Lessee Operating Lease Liability Payments Due Year Fivensa: Lease Arrangements
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
nsa:LeaseArrangements
(None,)
Lessee Operating Lease Liability Payments Due After Year Fivensa: Lease Arrangements
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Equity Components
us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
('us-gaap:CommonClassA', None)
Stock Issued During Period Value New Issuesus-gaap: Statement Class Of Stock, us-gaap: Statement Equity Components
us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
(None,)
Profit Lossus-gaap: Statement Equity Components