$NSA
National Storage Affiliates Trust Stock $nsa

$nsa Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000161856321000018 Filed on February 26, 2021

Income Statement

Concept	2019 Q4	2018
Revenue	$100.6M	$330.9M
YoY Change	12.62%	23.41%
Cost Of Revenue		$103.9M
YoY Change		22.99%
Gross Profit		$227.0M
YoY Change		23.6%
Gross Profit Margin		68.61%
Selling, General & Admin	$39.30M	$140.1M
YoY Change	4.8%	22.36%
% of Gross Profit		61.71%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$27.30M	$89.10M
YoY Change	19.21%	18.64%
% of Gross Profit		39.25%
Operating Expenses	$66.70M	$229.2M
YoY Change	10.36%	20.89%
Operating Profit		$101.7M
YoY Change		29.5%
Interest Expense	-$14.90M	$42.72M
YoY Change	8.76%	25.41%
% of Operating Profit		42.03%
Other Income/Expense, Net	$700.0K	-$44.51M
YoY Change	-450.0%	42.01%
Pretax Income	$19.20M	$57.14M
YoY Change	29.73%	21.18%
Income Tax	$400.0K	$818.0K
% Of Pretax Income	2.08%	1.43%
Net Earnings	$18.83M	$14.11M
YoY Change	29.99%	376.49%
Net Earnings / Revenue	18.72%	4.26%
Basic Earnings Per Share	$0.17	$0.07
Diluted Earnings Per Share	$0.13	$0.07
COMMON SHARES
Basic Shares Outstanding	59.33M shares	53.29M shares
Diluted Shares Outstanding		53.29M shares

Balance Sheet

Concept	2019 Q4	2018
SHORT-TERM ASSETS
Cash & Short-Term Investments	$20.60M	$13.20M
YoY Change	56.06%	-1.49%
Cash & Equivalents	$20.56M	$13.20M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables	$2.800M	$3.400M
Other Receivables	$7.500M	$6.600M
Total Short-Term Assets	$30.90M	$23.20M
YoY Change	33.19%	29.61%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.925M	$2.393B
YoY Change	22.3%	13.61%
Goodwill	$5.750M
YoY Change	0.0%
Intangibles
YoY Change
Long-Term Investments	$214.1M	$245.1M
YoY Change	-12.67%	175.08%
Other Assets	$11.70M	$8.700M
YoY Change	34.48%	-18.69%
Total Long-Term Assets	$3.053B	$2.706B
YoY Change	12.83%	20.34%
TOTAL ASSETS
Total Short-Term Assets	$30.90M	$23.20M
Total Long-Term Assets	$3.053B	$2.706B
Total Assets	$3.084B	$2.729B
YoY Change	13.01%	20.41%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$57.90M	$33.10M
YoY Change	74.92%	35.1%
Accrued Expenses	$24.70M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$82.60M	$33.10M
YoY Change	149.55%	35.1%
LONG-TERM LIABILITIES
Long-Term Debt	$1.534B	$1.278B
YoY Change	20.02%	33.4%
Other Long-Term Liabilities	$15.50M	$15.70M
YoY Change	-1.27%	23.62%
Total Long-Term Liabilities	$1.550B	$1.294B
YoY Change	19.76%	33.27%
TOTAL LIABILITIES
Total Short-Term Liabilities	$82.60M	$33.10M
Total Long-Term Liabilities	$1.550B	$1.294B
Total Liabilities	$1.632B	$1.812B
YoY Change	23.0%	27.12%
SHAREHOLDERS EQUITY
Retained Earnings	-$197.1M
YoY Change	72.69%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$919.6M	$916.8M
YoY Change
Total Liabilities & Shareholders Equity	$3.084B	$2.729B
YoY Change	13.01%	20.41%

Cashflow Statement

Concept	2019 Q4	2018
OPERATING ACTIVITIES
Net Income	$18.83M	$14.11M
YoY Change	29.99%	376.49%
Depreciation, Depletion And Amortization	$27.30M	$89.10M
YoY Change	19.21%	18.64%
Cash From Operating Activities	$46.60M	$161.8M
YoY Change	22.31%	30.18%
INVESTING ACTIVITIES
Capital Expenditures	-$27.50M	-$333.1M
YoY Change	-49.17%	-18.14%
Acquisitions
YoY Change
Other Investing Activities	-$1.300M	-$181.4M
YoY Change	-750.0%	7458.33%
Cash From Investing Activities	-$28.60M	-$514.5M
YoY Change	-47.04%	25.7%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$175.6M
YoY Change		25.21%
Debt Paid & Issued, Net		$507.2M
YoY Change		-25.31%
Cash From Financing Activities	-43.80M	$352.6M
YoY Change	-453.23%	23.27%
NET CHANGE
Cash From Operating Activities	46.60M	$161.8M
Cash From Investing Activities	-28.60M	-$514.5M
Cash From Financing Activities	-43.80M	$352.6M
Net Change In Cash	-25.80M	-$44.00K
YoY Change	637.14%	-104.11%
FREE CASH FLOW
Cash From Operating Activities	$46.60M	$161.8M
Capital Expenditures	-$27.50M	-$333.1M
Free Cash Flow	$74.10M	$494.9M
YoY Change	-19.63%	-6.83%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
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CY2020	nsa	Number Of Classes Of Real Estate NumberOfClassesOfRealEstate	1	class
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CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
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CY2020	dei	Entity File Number EntityFileNumber	001-37351
CY2020	dei	Entity Registrant Name EntityRegistrantName	National Storage Affiliates Trust
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	46-5053858
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	8400 East Prentice Avenue, 9th Floor
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CY2018	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	175616000	USD
CY2018	nsa	Effect Of Changes In Ownership For Consolidated Entities EffectOfChangesInOwnershipForConsolidatedEntities	0	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Other Longterm Incentive Plans Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition	3837000	USD
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2018	nsa	Stock Issued During Period Value Restricted Stock Award Vesting And Forfeited StockIssuedDuringPeriodValueRestrictedStockAwardVestingAndForfeited	75000	USD
CY2018	nsa	Reduction In Receivables From Partnership ReductionInReceivablesFromPartnership	642000	USD
CY2018	us-gaap	Dividends Preferred Stock DividendsPreferredStock	10350000	USD
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	62152000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	64011000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1781000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	56326000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1402299000	USD
CY2019	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	71891000	USD
CY2019	nsa	Effect Of Changes In Ownership For Consolidated Entities EffectOfChangesInOwnershipForConsolidatedEntities	0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Other Longterm Incentive Plans Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition	4527000	USD
CY2019	nsa	Noncontrolling Interest Increase Due To Issuance Of Shares For Services NoncontrollingInterestIncreaseDueToIssuanceOfSharesForServices	179000	USD
CY2019	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2019	nsa	Stock Issued During Period Value Restricted Stock Award Vesting And Forfeited StockIssuedDuringPeriodValueRestrictedStockAwardVestingAndForfeited	69000	USD
CY2019	nsa	Reduction In Receivables From Partnership ReductionInReceivablesFromPartnership	505000	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	12390000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	74546000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	76515000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-33278000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	66013000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1452101000	USD
CY2020	nsa	Noncontrolling Interest Increase From Long Term Incentive Plan Issuance NoncontrollingInterestIncreaseFromLongTermIncentivePlanIssuance	1011000	USD
CY2020	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	0	USD
CY2020	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	USD
CY2020	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	9595000	USD
CY2020	nsa	Effect Of Changes In Ownership For Consolidated Entities EffectOfChangesInOwnershipForConsolidatedEntities	0	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Other Longterm Incentive Plans Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationOtherLongtermIncentivePlansRequisiteServicePeriodRecognition	4278000	USD
CY2020	nsa	Noncontrolling Interest Increase Due To Issuance Of Shares For Services NoncontrollingInterestIncreaseDueToIssuanceOfSharesForServices	40000	USD
CY2020	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2020	nsa	Stock Issued During Period Value Restricted Stock Award Vesting And Forfeited StockIssuedDuringPeriodValueRestrictedStockAwardVestingAndForfeited	94000	USD
CY2020	nsa	Reduction In Receivables From Partnership ReductionInReceivablesFromPartnership	310000	USD
CY2020	us-gaap	Dividends Preferred Stock DividendsPreferredStock	13097000	USD
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	90141000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	74108000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-59024000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	79478000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1430475000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	79478000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	66013000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	56326000	USD
CY2020	nsa	Deprecation Depletion And Amortization Excluding Financing Costs And Discounts DeprecationDepletionAndAmortizationExcludingFinancingCostsAndDiscounts	117174000	USD
CY2019	nsa	Deprecation Depletion And Amortization Excluding Financing Costs And Discounts DeprecationDepletionAndAmortizationExcludingFinancingCostsAndDiscounts	105119000	USD
CY2018	nsa	Deprecation Depletion And Amortization Excluding Financing Costs And Discounts DeprecationDepletionAndAmortizationExcludingFinancingCostsAndDiscounts	89147000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3088000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2913000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2569000	USD
CY2020	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-1075000	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-1427000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-1469000	USD
CY2020	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	2814000	USD
CY2018	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	391000	USD
CY2020	us-gaap	Debt And Equity Securities Unrealized Gain Loss DebtAndEquitySecuritiesUnrealizedGainLoss	-142000	USD
CY2019	us-gaap	Debt And Equity Securities Unrealized Gain Loss DebtAndEquitySecuritiesUnrealizedGainLoss	610000	USD
CY2018	us-gaap	Debt And Equity Securities Unrealized Gain Loss DebtAndEquitySecuritiesUnrealizedGainLoss	0	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	4278000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	4527000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	3837000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	265000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-4970000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-1423000	USD
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	14634000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	14551000	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	8187000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	3440000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-110000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5713000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	7445000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	5617000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	6597000	USD
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-805000	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-2318000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	1283000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	220654000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	196651000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	161796000	USD
CY2020	us-gaap	Payments To Acquire Commercial Real Estate PaymentsToAcquireCommercialRealEstate	496509000	USD
CY2019	us-gaap	Payments To Acquire Commercial Real Estate PaymentsToAcquireCommercialRealEstate	371096000	USD
CY2018	us-gaap	Payments To Acquire Commercial Real Estate PaymentsToAcquireCommercialRealEstate	313712000	USD
CY2020	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	16395000	USD
CY2019	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	20594000	USD
CY2018	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	19014000	USD
CY2020	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	4382000	USD
CY2019	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2018	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	165642000	USD
CY2020	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	1494000	USD
CY2019	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	11543000	USD
CY2018	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	0	USD
CY2020	us-gaap	Payments For Deposits On Real Estate Acquisitions PaymentsForDepositsOnRealEstateAcquisitions	1087000	USD
CY2019	us-gaap	Payments For Deposits On Real Estate Acquisitions PaymentsForDepositsOnRealEstateAcquisitions	4438000	USD
CY2018	us-gaap	Payments For Deposits On Real Estate Acquisitions PaymentsForDepositsOnRealEstateAcquisitions	20977000	USD
CY2020	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	364000	USD
CY2019	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	862000	USD
CY2018	us-gaap	Payments To Acquire Furniture And Fixtures PaymentsToAcquireFurnitureAndFixtures	403000	USD
CY2020	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	0	USD
CY2019	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	12674000	USD
CY2018	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	0	USD
CY2020	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	7560000	USD
CY2019	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	5356000	USD
CY2018	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	0	USD
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
CY2019	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	6600000	USD
CY2018	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
CY2020	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	0	USD
CY2019	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	6335000	USD
CY2018	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	5259000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-509683000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-393030000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-514489000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	82917000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	70637000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	175616000	USD
CY2020	us-gaap	Proceeds From Issuance Of Redeemable Preferred Stock ProceedsFromIssuanceOfRedeemablePreferredStock	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Redeemable Preferred Stock ProceedsFromIssuanceOfRedeemablePreferredStock	43624000	USD
CY2018	us-gaap	Proceeds From Issuance Of Redeemable Preferred Stock ProceedsFromIssuanceOfRedeemablePreferredStock	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	929500000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	822000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	822500000	USD
CY2020	us-gaap	Proceeds From Partnership Contribution ProceedsFromPartnershipContribution	661000	USD
CY2019	us-gaap	Proceeds From Partnership Contribution ProceedsFromPartnershipContribution	1271000	USD
CY2018	us-gaap	Proceeds From Partnership Contribution ProceedsFromPartnershipContribution	1211000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	546147000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	561628000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	507239000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	90141000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	74546000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	62152000	USD
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	13097000	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	12390000	USD
CY2018	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	10350000	USD
CY2020	us-gaap	Distribution Made To Limited Partner Cash Distributions Paid DistributionMadeToLimitedPartnerCashDistributionsPaid	73798000	USD
CY2019	us-gaap	Distribution Made To Limited Partner Cash Distributions Paid DistributionMadeToLimitedPartnerCashDistributionsPaid	76010000	USD
CY2018	us-gaap	Distribution Made To Limited Partner Cash Distributions Paid DistributionMadeToLimitedPartnerCashDistributionsPaid	63350000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2471000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	8487000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2860000	USD
CY2020	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	970000	USD
CY2019	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	179000	USD
CY2018	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	727000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	286454000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	204292000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	352649000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-2575000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	7913000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-44000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	24276000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	16363000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	16407000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	21701000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	24276000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	16363000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	59346000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	52666000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	40475000	USD
CY2020	nsa	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Units Issued Value NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationUnitsIssuedValue	37233000	USD
CY2019	nsa	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Units Issued Value NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationUnitsIssuedValue	51826000	USD
CY2018	nsa	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Units Issued Value NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationUnitsIssuedValue	28063000	USD
CY2020	us-gaap	Escrow Deposit Disbursements Related To Property Acquisition1 EscrowDepositDisbursementsRelatedToPropertyAcquisition1	4438000	USD
CY2019	us-gaap	Escrow Deposit Disbursements Related To Property Acquisition1 EscrowDepositDisbursementsRelatedToPropertyAcquisition1	20977000	USD
CY2018	us-gaap	Escrow Deposit Disbursements Related To Property Acquisition1 EscrowDepositDisbursementsRelatedToPropertyAcquisition1	5050000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	7581000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Other Liabilities Assumed1 NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1	3626000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Other Liabilities Assumed1 NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1	2403000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Other Liabilities Assumed1 NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1	2167000	USD
CY2020	nsa	Redemption And Conversion Of Partnership Interests RedemptionAndConversionOfPartnershipInterests	33583000	USD
CY2019	nsa	Redemption And Conversion Of Partnership Interests RedemptionAndConversionOfPartnershipInterests	0	USD
CY2020	us-gaap	Stock Issued1 StockIssued1	10301000	USD
CY2019	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2020	nsa	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Options Issued In Settlementof Liability NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationOptionsIssuedInSettlementofLiability	987000	USD
CY2019	nsa	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Options Issued In Settlementof Liability NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationOptionsIssuedInSettlementofLiability	1253000	USD
CY2018	nsa	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Options Issued In Settlementof Liability NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationOptionsIssuedInSettlementofLiability	1236000	USD
CY2020	nsa	Noncash Or Part Noncash Acquisition Settlement Of Receivables With Partners NoncashOrPartNoncashAcquisitionSettlementOfReceivablesWithPartners	310000	USD
CY2019	nsa	Noncash Or Part Noncash Acquisition Settlement Of Receivables With Partners NoncashOrPartNoncashAcquisitionSettlementOfReceivablesWithPartners	505000	USD
CY2018	nsa	Noncash Or Part Noncash Acquisition Settlement Of Receivables With Partners NoncashOrPartNoncashAcquisitionSettlementOfReceivablesWithPartners	642000	USD
CY2020	nsa	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Options Issued For Assumed Mortgage Reimbursements NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationOptionsIssuedForAssumedMortgageReimbursements	0	USD
CY2019	nsa	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Options Issued For Assumed Mortgage Reimbursements NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationOptionsIssuedForAssumedMortgageReimbursements	0	USD
CY2018	nsa	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Options Issued For Assumed Mortgage Reimbursements NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationOptionsIssuedForAssumedMortgageReimbursements	19000	USD
CY2020	nsa	Increase Decrease In Payables For Offering Costs IncreaseDecreaseInPayablesForOfferingCosts	970000	USD
CY2019	nsa	Increase Decrease In Payables For Offering Costs IncreaseDecreaseInPayablesForOfferingCosts	-321000	USD
CY2018	nsa	Increase Decrease In Payables For Offering Costs IncreaseDecreaseInPayablesForOfferingCosts	626000	USD
CY2020	nsa	Settlement Of Offering Costs From Equity Issuance SettlementOfOfferingCostsFromEquityIssuance	207000	USD
CY2019	nsa	Settlement Of Offering Costs From Equity Issuance SettlementOfOfferingCostsFromEquityIssuance	1241000	USD
CY2018	nsa	Settlement Of Offering Costs From Equity Issuance SettlementOfOfferingCostsFromEquityIssuance	575000	USD
CY2020Q4	nsa	Operating Lease Right Of Use Asset Due To Lease Implementation OperatingLeaseRightOfUseAssetDueToLeaseImplementation	0	USD
CY2019Q4	nsa	Operating Lease Right Of Use Asset Due To Lease Implementation OperatingLeaseRightOfUseAssetDueToLeaseImplementation	23306000	USD
CY2020Q4	nsa	Operating Lease Liability Due To Lease Implementation OperatingLeaseLiabilityDueToLeaseImplementation	0	USD
CY2019Q4	nsa	Operating Lease Liability Due To Lease Implementation OperatingLeaseLiabilityDueToLeaseImplementation	24665000	USD
CY2020	nsa	Number Of Top Metropolitan Statistical Areas For Focus Of Operations NumberOfTopMetropolitanStatisticalAreasForFocusOfOperations	100	metropolitan_statistical_area
CY2020Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	821	property
CY2020Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	36	state
CY2020Q4	us-gaap	Net Rentable Area NetRentableArea	52000000.0	sqft
CY2020Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	413000	property
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020	us-gaap	Revenue Recognition Leases RevenueRecognitionLeases	Rental revenueRental revenue consists of space rentals and related fees. Management has determined that all of the Company's leases are operating leases. Substantially all leases may be terminated on a month-to-month basis and rental income is recognized ratably over the lease term using the straight-line method. Rents received in advance are deferred and recognized on a straight-line basis over the related lease term associated with the prepayment. Promotional discounts and other incentives are recognized as a reduction to rental income over the applicable lease term.
CY2020	nsa	Initial Term Of Joint Venture Agreement InitialTermOfJointVentureAgreement	P4Y
CY2020	nsa	Revenue Performance Obligation Recognition Period RevenuePerformanceObligationRecognitionPeriod	P4Y
CY2020	us-gaap	Advertising Expense AdvertisingExpense	5800000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	5200000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	4100000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	0	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	0	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	Use of EstimatesThe preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
CY2020	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-bottom:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Reclassifications</span></div><div style="margin-bottom:6pt;text-align:justify;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain amounts in the consolidated financial statements and related notes have been reclassified to conform to the current year presentation. Such reclassifications do not impact the Company's previously reported financial position or net income (loss).</span></div>
CY2019Q1	nsa	Common And Preferred Stock Value Of Shares Authorized Under Atm Program CommonAndPreferredStockValueOfSharesAuthorizedUnderATMProgram	250000000.0	USD
CY2019Q1	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.06000
CY2020Q4	us-gaap	Land Land	738863000	USD
CY2019Q4	us-gaap	Land Land	649938000	USD
CY2020Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	2892490000	USD
CY2019Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	2435171000	USD
CY2020Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	7839000	USD
CY2019Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	6610000	USD
CY2020Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	3639192000	USD
CY2019Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	3091719000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	443623000	USD
CY2019Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	337822000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	3195569000	USD
CY2019Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	2753897000	USD
CY2020	us-gaap	Depreciation Nonproduction DepreciationNonproduction	105900000	USD
CY2019	us-gaap	Depreciation Nonproduction DepreciationNonproduction	92200000	USD
CY2018	us-gaap	Depreciation Nonproduction DepreciationNonproduction	76300000	USD
CY2020	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	77	property
CY2020	nsa	Asset Acquisition Assets Acquiredand Liabilities Assumed Net AssetAcquisitionAssetsAcquiredandLiabilitiesAssumedNet	543300000	USD
CY2019	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	69	property
CY2019	nsa	Asset Acquisition Assets Acquiredand Liabilities Assumed Net AssetAcquisitionAssetsAcquiredandLiabilitiesAssumedNet	447800000	USD
CY2020	nsa	Asset Acquisition Capitalized Acquisition Costs AssetAcquisitionCapitalizedAcquisitionCosts	4700000	USD
CY2019	nsa	Asset Acquisition Capitalized Acquisition Costs AssetAcquisitionCapitalizedAcquisitionCosts	3600000	USD
CY2020Q1	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	36	property
CY2020Q1	nsa	Payments For Asset Acquisitions PaymentsForAssetAcquisitions	214584000	USD
CY2020Q1	nsa	Asset Acquisitions Equity Interests Issued And Issuable Value AssetAcquisitionsEquityInterestsIssuedAndIssuableValue	7217000	USD
CY2020Q1	nsa	Asset Acquisitions Liabilities And Other Consideration AssetAcquisitionsLiabilitiesAndOtherConsideration	972000	USD
CY2020Q1	nsa	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	222773000	USD
CY2020Q2	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	4	property
CY2020Q2	nsa	Payments For Asset Acquisitions PaymentsForAssetAcquisitions	30198000	USD
CY2020Q2	nsa	Asset Acquisitions Equity Interests Issued And Issuable Value AssetAcquisitionsEquityInterestsIssuedAndIssuableValue	5842000	USD
CY2020Q2	nsa	Asset Acquisitions Liabilities And Other Consideration AssetAcquisitionsLiabilitiesAndOtherConsideration	207000	USD
CY2020Q2	nsa	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	36247000	USD
CY2020Q3	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	4	property
CY2020Q3	nsa	Payments For Asset Acquisitions PaymentsForAssetAcquisitions	20173000	USD
CY2020Q3	nsa	Asset Acquisitions Equity Interests Issued And Issuable Value AssetAcquisitionsEquityInterestsIssuedAndIssuableValue	3427000	USD
CY2020Q3	nsa	Asset Acquisitions Liabilities And Other Consideration AssetAcquisitionsLiabilitiesAndOtherConsideration	204000	USD
CY2020Q3	nsa	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	23804000	USD
CY2020Q4	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	33	property
CY2020Q4	nsa	Payments For Asset Acquisitions PaymentsForAssetAcquisitions	237517000	USD
CY2020Q4	nsa	Asset Acquisitions Equity Interests Issued And Issuable Value AssetAcquisitionsEquityInterestsIssuedAndIssuableValue	20747000	USD
CY2020Q4	nsa	Asset Acquisitions Liabilities And Other Consideration AssetAcquisitionsLiabilitiesAndOtherConsideration	2244000	USD
CY2020Q4	nsa	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	260508000	USD
CY2020	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	77	property
CY2020	nsa	Payments For Asset Acquisitions PaymentsForAssetAcquisitions	502472000	USD
CY2020	nsa	Asset Acquisitions Equity Interests Issued And Issuable Value AssetAcquisitionsEquityInterestsIssuedAndIssuableValue	37233000	USD
CY2020	nsa	Asset Acquisitions Liabilities And Other Consideration AssetAcquisitionsLiabilitiesAndOtherConsideration	3627000	USD
CY2020	nsa	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	543332000	USD
CY2019Q1	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	32	property
CY2019Q1	nsa	Payments For Asset Acquisitions PaymentsForAssetAcquisitions	160531000	USD
CY2019Q1	nsa	Asset Acquisitions Equity Interests Issued And Issuable Value AssetAcquisitionsEquityInterestsIssuedAndIssuableValue	33356000	USD
CY2019Q1	nsa	Asset Acquisitions Liabilities And Other Consideration AssetAcquisitionsLiabilitiesAndOtherConsideration	674000	USD
CY2019Q1	nsa	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	194561000	USD
CY2019Q2	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	24	property
CY2019Q2	nsa	Payments For Asset Acquisitions PaymentsForAssetAcquisitions	168442000	USD
CY2019Q2	nsa	Asset Acquisitions Equity Interests Issued And Issuable Value AssetAcquisitionsEquityInterestsIssuedAndIssuableValue	15515000	USD
CY2019Q2	nsa	Asset Acquisitions Liabilities And Other Consideration AssetAcquisitionsLiabilitiesAndOtherConsideration	1378000	USD
CY2019Q2	nsa	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	185335000	USD
CY2019Q3	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	6	property
CY2019Q3	nsa	Payments For Asset Acquisitions PaymentsForAssetAcquisitions	34624000	USD
CY2019Q3	nsa	Asset Acquisitions Equity Interests Issued And Issuable Value AssetAcquisitionsEquityInterestsIssuedAndIssuableValue	950000	USD
CY2019	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	69	property
CY2019Q3	nsa	Asset Acquisitions Liabilities And Other Consideration AssetAcquisitionsLiabilitiesAndOtherConsideration	197000	USD
CY2019Q3	nsa	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	35771000	USD
CY2019Q4	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	7	property
CY2019Q4	nsa	Payments For Asset Acquisitions PaymentsForAssetAcquisitions	30004000	USD
CY2019Q4	nsa	Asset Acquisitions Equity Interests Issued And Issuable Value AssetAcquisitionsEquityInterestsIssuedAndIssuableValue	2005000	USD
CY2019Q4	nsa	Asset Acquisitions Liabilities And Other Consideration AssetAcquisitionsLiabilitiesAndOtherConsideration	154000	USD
CY2019Q4	nsa	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	32163000	USD
CY2019	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	69	property
CY2019	nsa	Payments For Asset Acquisitions PaymentsForAssetAcquisitions	393601000	USD
CY2019	nsa	Asset Acquisitions Equity Interests Issued And Issuable Value AssetAcquisitionsEquityInterestsIssuedAndIssuableValue	51826000	USD
CY2019	nsa	Asset Acquisitions Liabilities And Other Consideration AssetAcquisitionsLiabilitiesAndOtherConsideration	2403000	USD
CY2019	nsa	Asset Acquisition Consideration Transferred AssetAcquisitionConsiderationTransferred	447830000	USD
CY2020	nsa	Asset Acquisition Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual AssetAcquisitionProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	21300000	USD
CY2020	nsa	Asset Acquisition Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual AssetAcquisitionProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	-300000	USD
CY2020	nsa	Number Of Assets Acquired Properties NumberOfAssetsAcquiredProperties	77	property
CY2019	nsa	Asset Acquisition Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual AssetAcquisitionProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	30400000	USD
CY2019	nsa	Asset Acquisition Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual AssetAcquisitionProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	2500000	USD
CY2019	nsa	Number Of Real Estate Assets Sold NumberOfRealEstateAssetsSold	1	property
CY2019Q4	us-gaap	Disposal Group Including Discontinued Operation Consideration DisposalGroupIncludingDiscontinuedOperationConsideration	6500000	USD
CY2019	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	2800000	USD
CY2020Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	2734000	USD
CY2019Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	2809000	USD
CY2020Q4	us-gaap	Accounts Receivable Related Parties AccountsReceivableRelatedParties	2974000	USD
CY2019Q4	us-gaap	Accounts Receivable Related Parties AccountsReceivableRelatedParties	2773000	USD
CY2020Q4	us-gaap	Due From Joint Ventures DueFromJointVentures	5825000	USD
CY2019Q4	us-gaap	Due From Joint Ventures DueFromJointVentures	4765000	USD
CY2020Q4	us-gaap	Earnest Money Deposits EarnestMoneyDeposits	1087000	USD
CY2019Q4	us-gaap	Earnest Money Deposits EarnestMoneyDeposits	4438000	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	0	USD
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	980000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	0	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	7703000	USD
CY2020Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	7099000	USD
CY2019Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	4762000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1673000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1925000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	8182000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	5750000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	68149000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	8049000	USD
CY2019Q4	us-gaap	Other Assets OtherAssets	65441000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1604000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1604000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1603000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1600000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	17735000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	32195000	USD
CY2020Q4	nsa	Debt Longterm And Shortterm Combined Amounts Gross DebtLongtermAndShorttermCombinedAmountsGross	1922614000	USD
CY2019Q4	nsa	Debt Longterm And Shortterm Combined Amounts Gross DebtLongtermAndShorttermCombinedAmountsGross	1539260000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	5643000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	5213000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	2709000	USD
CY2020Q4	nsa	Longterm Debt Maturities Repayments Of Principal In Year Three Gross LongtermDebtMaturitiesRepaymentsOfPrincipalInYearThreeGross	376813000	USD
CY2020Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	1916971000	USD
CY2019Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	1534047000	USD
CY2020Q4	nsa	Longterm Debt Maturities Repaymentsof Principal Due Next Twelve Months Gross LongtermDebtMaturitiesRepaymentsofPrincipalDueNextTwelveMonthsGross	7670000	USD
CY2020Q4	nsa	Long Term Debt Premium Discount Debt Issuance Costs Amortization In Next Twelve Months LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInNextTwelveMonths	1675000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	5995000	USD
CY2020Q4	nsa	Longterm Debt Maturities Repayments Of Principal In Year Two Gross LongtermDebtMaturitiesRepaymentsOfPrincipalInYearTwoGross	4374000	USD
CY2020Q4	nsa	Long Term Debt Premium Discount Debt Issuance Costs Amortization In Year Two LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearTwo	1665000	USD
CY2020Q4	nsa	Long Term Debt Premium Discount Debt Issuance Costs Amortization In Year Three LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearThree	1312000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	375501000	USD
CY2020Q4	nsa	Longterm Debt Maturities Repayments Of Principal In Year Four Gross LongtermDebtMaturitiesRepaymentsOfPrincipalInYearFourGross	445964000	USD
CY2020Q4	nsa	Long Term Debt Premium Discount Debt Issuance Costs Amortization In Year Four LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearFour	943000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	445021000	USD
CY2020Q4	nsa	Longterm Debt Maturities Repayments Of Principal In Year Five Gross LongtermDebtMaturitiesRepaymentsOfPrincipalInYearFiveGross	227185000	USD
CY2020Q4	nsa	Long Term Debt Premium Discount Debt Issuance Costs Amortization In Year Five LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationInYearFive	371000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	226814000	USD
CY2020Q4	nsa	Longterm Debt Maturities Repaymentsof Principal After Year Five Gross LongtermDebtMaturitiesRepaymentsofPrincipalAfterYearFiveGross	860608000	USD
CY2020Q4	nsa	Long Term Debt Premium Discount Debt Issuance Costs Amortization After Year Five LongTermDebtPremiumDiscountDebtIssuanceCostsAmortizationAfterYearFive	-323000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	860931000	USD
CY2020Q4	nsa	Debt Longterm And Shortterm Combined Amounts Gross DebtLongtermAndShorttermCombinedAmountsGross	1922614000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	5643000	USD
CY2020Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	1916971000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	79478000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	66013000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	56326000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	30869000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	62030000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	42217000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	48609000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	3983000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	14109000	USD
CY2020	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	13097000	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	12390000	USD
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	10350000	USD
CY2020	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	44000	USD
CY2019	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	35000	USD
CY2018	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	27000	USD
CY2020	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	35468000	USD
CY2019	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	-8442000	USD
CY2018	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Basic UndistributedEarningsLossAvailableToCommonShareholdersBasic	3732000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	66547000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	58208000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	53293000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Equity Forward Agreements IncrementalCommonSharesAttributableToEquityForwardAgreements	60000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Equity Forward Agreements IncrementalCommonSharesAttributableToEquityForwardAgreements	0	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Equity Forward Agreements IncrementalCommonSharesAttributableToEquityForwardAgreements	0	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	66607000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	58208000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53293000	shares
CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.53
CY2019	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.15
CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.07
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.35
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.27
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.16
CY2019Q2	nsa	Ownership Interest In Tenant Reinsurance Company Acquired OwnershipInterestInTenantReinsuranceCompanyAcquired	0.055
CY2020	nsa	Number Of Businesses Subject To Noncancelable Leasehold Interest Agreements NumberOfBusinessesSubjectToNoncancelableLeaseholdInterestAgreements	8	property
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	1915000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	1924000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1894000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1920000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1977000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	35830000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	45460000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	20704000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	24756000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	1705000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	1831000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1840000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1810000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1823000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	37419000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	46428000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	21763000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	24665000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	3337000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-29941000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-14520000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-73544000	USD
CY2020Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	-20000000.0	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	738797000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	2785187000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Carrying Costs RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	114690000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	738863000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	2900329000	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	3639192000	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	443623000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	3091719000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2637723000	USD
CY2017Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2275233000	USD
CY2020	nsa	Sec Schedule Iii Real Estate Acquisitions And Improvements SECScheduleIIIRealEstateAcquisitionsAndImprovements	547667000	USD
CY2019	nsa	Sec Schedule Iii Real Estate Acquisitions And Improvements SECScheduleIIIRealEstateAcquisitionsAndImprovements	458132000	USD
CY2018	nsa	Sec Schedule Iii Real Estate Acquisitions And Improvements SECScheduleIIIRealEstateAcquisitionsAndImprovements	366522000	USD
CY2020	nsa	Sec Schedule Iii Real Estate Reclassifications From Assets For Sale SECScheduleIIIRealEstateReclassificationsFromAssetsForSale	0	USD
CY2019	nsa	Sec Schedule Iii Real Estate Reclassifications From Assets For Sale SECScheduleIIIRealEstateReclassificationsFromAssetsForSale	0	USD
CY2018	nsa	Sec Schedule Iii Real Estate Reclassifications From Assets For Sale SECScheduleIIIRealEstateReclassificationsFromAssetsForSale	0	USD
CY2020	us-gaap	Sec Schedule Iii Real Estate Writedown Or Reserve Amount SECScheduleIIIRealEstateWritedownOrReserveAmount	194000	USD
CY2019	us-gaap	Sec Schedule Iii Real Estate Writedown Or Reserve Amount SECScheduleIIIRealEstateWritedownOrReserveAmount	0	USD
CY2018	us-gaap	Sec Schedule Iii Real Estate Writedown Or Reserve Amount SECScheduleIIIRealEstateWritedownOrReserveAmount	323000	USD
CY2020	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	0	USD
CY2019	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	4136000	USD
CY2018	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	3709000	USD
CY2020	nsa	Sec Schedule Iii Real Estate Properties Held For Sale SECScheduleIIIRealEstatePropertiesHeldForSale	0	USD
CY2019	nsa	Sec Schedule Iii Real Estate Properties Held For Sale SECScheduleIIIRealEstatePropertiesHeldForSale	0	USD
CY2018	nsa	Sec Schedule Iii Real Estate Properties Held For Sale SECScheduleIIIRealEstatePropertiesHeldForSale	0	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	3639192000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	3091719000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2637723000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	337822000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	246261000	USD
CY2017Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	170358000	USD
CY2020	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	105866000	USD
CY2019	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	92177000	USD
CY2018	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	76299000	USD
CY2020	nsa	Sec Schedule Iii Real Estate Accumulated Deprecation Writeoff Of Fully Deprecated Assets And Other SECScheduleIIIRealEstateAccumulatedDeprecationWriteoffOfFullyDeprecatedAssetsAndOther	65000	USD
CY2019	nsa	Sec Schedule Iii Real Estate Accumulated Deprecation Writeoff Of Fully Deprecated Assets And Other SECScheduleIIIRealEstateAccumulatedDeprecationWriteoffOfFullyDeprecatedAssetsAndOther	0	USD
CY2018	nsa	Sec Schedule Iii Real Estate Accumulated Deprecation Writeoff Of Fully Deprecated Assets And Other SECScheduleIIIRealEstateAccumulatedDeprecationWriteoffOfFullyDeprecatedAssetsAndOther	0	USD
CY2020	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	0	USD
CY2019	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	616000	USD
CY2018	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	396000	USD
CY2020	nsa	Sec Schedule Iii Real Estate Accumulated Depreciation Assets Held For Sale SECScheduleIIIRealEstateAccumulatedDepreciationAssetsHeldForSale	0	USD
CY2019	nsa	Sec Schedule Iii Real Estate Accumulated Depreciation Assets Held For Sale SECScheduleIIIRealEstateAccumulatedDepreciationAssetsHeldForSale	0	USD
CY2018	nsa	Sec Schedule Iii Real Estate Accumulated Depreciation Assets Held For Sale SECScheduleIIIRealEstateAccumulatedDepreciationAssetsHeldForSale	0	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	443623000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	337822000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	246261000	USD

Files In Submission

Name	View Source	Status
0001618563-21-000018-index-headers.html	Edgar Link	pending
0001618563-21-000018-index.html	Edgar Link	pending
0001618563-21-000018.txt	Edgar Link	pending
0001618563-21-000018-xbrl.zip	Edgar Link	pending
ex1013-blueskyxpartnership.htm	Edgar Link	pending
ex2112020listofsubsidiarie.htm	Edgar Link	pending
ex231consentofkpmgllpforna.htm	Edgar Link	pending
ex311ceocertificationq420.htm	Edgar Link	pending
ex312cfocertificationq420.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
nsa-20201231.htm	Edgar Link	pending
nsa-20201231.xsd	Edgar Link	pending
nsa-20201231_cal.xml	Edgar Link	unprocessable
nsa-20201231_def.xml	Edgar Link	unprocessable
nsa-20201231_g1.jpg	Edgar Link	pending
nsa-20201231_htm.xml	Edgar Link	completed
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$NSA
National Storage Affiliates Trust Stock $nsa

2019 Q4 Form 10-K Financial Statement

#000161856321000018 Filed on February 26, 2021

Income Statement

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$NSA National Storage Affiliates Trust Stock $nsa

2019 Q4 Form 10-K Financial Statement

#000161856321000018 Filed on February 26, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NSA
National Storage Affiliates Trust Stock $nsa