$STAG
STAG Industrial, Inc. Stock $stag

$stag Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000147909421000007 Filed on February 10, 2021

Income Statement

Concept	2020 Q4	2019 Q4	2019 Q3
Revenue	$130.0M	$111.2M	$102.4M
YoY Change	16.91%	19.19%	15.15%
Cost Of Revenue	$25.80M	$20.20M	$17.80M
YoY Change	27.72%	10.38%	4.09%
Gross Profit	$104.2M	$91.00M	$84.60M
YoY Change	14.51%	21.33%	17.83%
Gross Profit Margin	80.15%	81.83%	82.6%
Selling, General & Admin	$11.20M	$9.600M	$9.300M
YoY Change	16.67%	14.29%	4.49%
% of Gross Profit	10.75%	10.55%	10.99%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$54.50M	$51.70M	$46.90M
YoY Change	5.42%	21.93%	5.87%
% of Gross Profit	52.3%	56.81%	55.44%
Operating Expenses	$66.20M	$61.70M	$56.70M
YoY Change	7.29%	20.27%	5.98%
Operating Profit	$38.00M	$29.30M	$27.90M
YoY Change	29.69%	23.63%	52.46%
Interest Expense	-$16.20M	-$15.50M	$14.05M
YoY Change	4.52%	17.42%	10.67%
% of Operating Profit	-42.63%	-52.9%	50.37%
Other Income/Expense, Net			-$12.37M
YoY Change			30.65%
Pretax Income	$98.20M	$17.90M	$11.20M
YoY Change	448.6%	-62.16%	25.84%
Income Tax
% Of Pretax Income
Net Earnings	$96.10M	$17.40M	$10.90M
YoY Change	452.3%	-61.76%	26.82%
Net Earnings / Revenue	73.92%	15.65%	10.64%
Basic Earnings Per Share
Diluted Earnings Per Share	$639.4K	$129.3K	$85.49K
COMMON SHARES
Basic Shares Outstanding	149.2M shares	133.0M shares	127.3M shares
Diluted Shares Outstanding			127.5M shares

Balance Sheet

Concept	2020 Q4	2019 Q4	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$15.70M	$9.000M	$6.500M
YoY Change	74.44%	12.5%	8.33%
Cash & Equivalents	$15.67M	$9.041M	$6.540M
Short-Term Investments
Other Short-Term Assets	$43.50M	$38.20M	$46.70M
YoY Change	13.87%	3.52%	33.05%
Inventory
Prepaid Expenses
Receivables	$77.80M	$57.60M	$50.50M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$137.0M	$104.8M	$103.7M
YoY Change	30.73%	20.32%	29.14%
LONG-TERM ASSETS
Property, Plant & Equipment	$4.551B	$4.014B	$3.638B
YoY Change	13.38%	34.16%	26.07%
Goodwill	$4.900M
YoY Change
Intangibles	$499.8M	$475.1M	$414.0M
YoY Change	5.19%	38.93%	26.31%
Long-Term Investments
YoY Change
Other Assets	$5.100M	$45.80M	$2.700M
YoY Change	-88.86%	213.7%	-48.08%
Total Long-Term Assets	$4.556B	$4.060B	$3.642B
YoY Change	12.21%	34.64%	25.18%
TOTAL ASSETS
Total Short-Term Assets	$137.0M	$104.8M	$103.7M
Total Long-Term Assets	$4.556B	$4.060B	$3.642B
Total Assets	$4.693B	$4.165B	$3.745B
YoY Change	12.68%	34.23%	25.29%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$69.80M	$53.70M	$63.60M
YoY Change	29.98%	18.02%	19.1%
Accrued Expenses	$27.90M	$17.00M	$17.30M
YoY Change	64.12%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$144.9M	$110.2M	$118.3M
YoY Change	31.49%	35.38%	35.51%
LONG-TERM LIABILITIES
Long-Term Debt	$1.703B	$1.645B	$1.477B
YoY Change	3.54%	24.07%	11.85%
Other Long-Term Liabilities	$73.40M	$45.60M	$45.00M
YoY Change	60.96%	78.13%	117.39%
Total Long-Term Liabilities	$1.777B	$1.691B	$1.522B
YoY Change	5.09%	25.09%	13.48%
TOTAL LIABILITIES
Total Short-Term Liabilities	$144.9M	$110.2M	$118.3M
Total Long-Term Liabilities	$1.777B	$1.691B	$1.522B
Total Liabilities	$1.922B	$1.801B	$1.640B
YoY Change	6.71%	25.67%	14.83%
SHAREHOLDERS EQUITY
Retained Earnings	-$742.1M	-$723.0M	-$690.3M
YoY Change	2.63%	23.6%	17.05%
Common Stock	$1.582M	$1.428M	$1.330M
YoY Change	10.78%	27.27%	23.38%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.716B	$2.306B	$2.049B
YoY Change
Total Liabilities & Shareholders Equity	$4.693B	$4.165B	$3.745B
YoY Change	12.68%	34.23%	25.29%

Cashflow Statement

Concept	2020 Q4	2019 Q4	2019 Q3
OPERATING ACTIVITIES
Net Income	$96.10M	$17.40M	$10.90M
YoY Change	452.3%	-61.76%	26.82%
Depreciation, Depletion And Amortization	$54.50M	$51.70M	$46.90M
YoY Change	5.42%	21.93%	5.87%
Cash From Operating Activities	$69.80M	$58.50M	$64.30M
YoY Change	19.32%	18.9%	25.34%
INVESTING ACTIVITIES
Capital Expenditures	-$598.0M	-$480.2M	-$323.8M
YoY Change	24.53%	110.34%	58.34%
Acquisitions
YoY Change
Other Investing Activities	$157.4M	$23.40M	$2.700M
YoY Change	572.65%	-79.53%	-73.53%
Cash From Investing Activities	-$440.6M	-$456.9M	-$321.2M
YoY Change	-3.57%	301.14%	65.23%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	316.4M	401.0M	256.5M
YoY Change	-21.1%	427.63%	88.19%
NET CHANGE
Cash From Operating Activities	69.80M	58.50M	64.30M
Cash From Investing Activities	-440.6M	-456.9M	-321.2M
Cash From Financing Activities	316.4M	401.0M	256.5M
Net Change In Cash	-54.40M	2.600M	-400.0K
YoY Change	-2192.31%	-76.99%	-94.12%
FREE CASH FLOW
Cash From Operating Activities	$69.80M	$58.50M	$64.30M
Capital Expenditures	-$598.0M	-$480.2M	-$323.8M
Free Cash Flow	$667.8M	$538.7M	$388.1M
YoY Change	23.97%	94.13%	51.72%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001479094
CY2020	dei	Document Type DocumentType	10-K
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
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	1-34907
CY2020	dei	Entity Registrant Name EntityRegistrantName	STAG INDUSTRIAL, INC.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	27-3099608
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	One Federal Street
CY2020	dei	Entity Address Address Line2 EntityAddressAddressLine2	23rd Floor
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Boston,
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	02110
CY2020	dei	City Area Code CityAreaCode	617
CY2020	dei	Local Phone Number LocalPhoneNumber	574-4777
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CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	149215000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	125678000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	103807000	shares
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.32
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.35
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.80
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.32
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.35
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.79
CY2020	us-gaap	Profit Loss ProfitLoss	206795000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	50665000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	96245000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-22109000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-23625000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	310000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-22109000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-23625000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	310000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	184686000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	27040000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	96555000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4648000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1384000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3319000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-510000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-718000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	12000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	180548000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	26374000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	93224000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1410307000	USD
CY2018	stag	Cumulative Effect Of New Accoutning Principle In Period Of Adoption CumulativeEffectOfNewAccoutningPrincipleInPeriodOfAdoption	0	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	386099000	USD
CY2018	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	70017000	USD
CY2018	stag	Dividendsand Distributions Net DividendsandDistributionsNet	160742000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7430000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	310000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	96245000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1669632000	USD
CY2019	stag	Cumulative Effect Of New Accoutning Principle In Period Of Adoption CumulativeEffectOfNewAccoutningPrincipleInPeriodOfAdoption	-214000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	852330000	USD
CY2019	stag	Dividendsand Distributions Net DividendsandDistributionsNet	193292000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8395000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-23625000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	50665000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2363891000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	438484000	USD
CY2020	stag	Dividendsand Distributions Net DividendsandDistributionsNet	226196000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10187000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-22109000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	206795000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2771052000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	206795000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	50665000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	96245000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	214738000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	185450000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	167617000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	5577000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	9757000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	6182000	USD
CY2020	stag	Gain Losson Involuntary Conversion GainLossonInvoluntaryConversion	2157000	USD
CY2019	stag	Gain Losson Involuntary Conversion GainLossonInvoluntaryConversion	0	USD
CY2018	stag	Gain Losson Involuntary Conversion GainLossonInvoluntaryConversion	0	USD
CY2020	us-gaap	Paid In Kind Interest PaidInKindInterest	2922000	USD
CY2019	us-gaap	Paid In Kind Interest PaidInKindInterest	2583000	USD
CY2018	us-gaap	Paid In Kind Interest PaidInKindInterest	2316000	USD
CY2020	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	4341000	USD
CY2019	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	4862000	USD
CY2018	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	4164000	USD
CY2020	us-gaap	Straight Line Rent StraightLineRent	12074000	USD
CY2019	us-gaap	Straight Line Rent StraightLineRent	11774000	USD
CY2018	us-gaap	Straight Line Rent StraightLineRent	11163000	USD
CY2020	us-gaap	Restricted Stock Award Forfeitures Dividends RestrictedStockAwardForfeituresDividends	0	USD
CY2019	us-gaap	Restricted Stock Award Forfeitures Dividends RestrictedStockAwardForfeituresDividends	38000	USD
CY2018	us-gaap	Restricted Stock Award Forfeitures Dividends RestrictedStockAwardForfeituresDividends	15000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-834000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-13000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	135733000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	7392000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	72211000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	11681000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	9888000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	8922000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	4482000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	2509000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	903000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	11528000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	8480000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	8921000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	7157000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	429000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	2385000	USD
CY2020	us-gaap	Increase Decrease In Customer Advances And Deposits IncreaseDecreaseInCustomerAdvancesAndDeposits	5851000	USD
CY2019	us-gaap	Increase Decrease In Customer Advances And Deposits IncreaseDecreaseInCustomerAdvancesAndDeposits	-160000	USD
CY2018	us-gaap	Increase Decrease In Customer Advances And Deposits IncreaseDecreaseInCustomerAdvancesAndDeposits	3108000	USD
CY2020	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	87127000	USD
CY2019	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	182692000	USD
CY2018	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	101524000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	293922000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	233357000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	197769000	USD
CY2020	us-gaap	Payments To Acquire Commercial Real Estate PaymentsToAcquireCommercialRealEstate	661961000	USD
CY2019	us-gaap	Payments To Acquire Commercial Real Estate PaymentsToAcquireCommercialRealEstate	995047000	USD
CY2018	us-gaap	Payments To Acquire Commercial Real Estate PaymentsToAcquireCommercialRealEstate	564805000	USD
CY2020	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	55741000	USD
CY2019	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	65044000	USD
CY2018	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	34584000	USD
CY2020	us-gaap	Payments To Acquire Other Receivables PaymentsToAcquireOtherReceivables	450000	USD
CY2019	us-gaap	Payments To Acquire Other Receivables PaymentsToAcquireOtherReceivables	2736000	USD
CY2018	us-gaap	Payments To Acquire Other Receivables PaymentsToAcquireOtherReceivables	794000	USD
CY2020	stag	Payment To Acquire Operating Lease Right Of Use Assets PaymentToAcquireOperatingLeaseRightOfUseAssets	3984000	USD
CY2019	stag	Payment To Acquire Operating Lease Right Of Use Assets PaymentToAcquireOperatingLeaseRightOfUseAssets	0	USD
CY2018	stag	Payment To Acquire Operating Lease Right Of Use Assets PaymentToAcquireOperatingLeaseRightOfUseAssets	0	USD
CY2020	us-gaap	Proceeds From Sale Of Buildings ProceedsFromSaleOfBuildings	273560000	USD
CY2019	us-gaap	Proceeds From Sale Of Buildings ProceedsFromSaleOfBuildings	42028000	USD
CY2018	us-gaap	Proceeds From Sale Of Buildings ProceedsFromSaleOfBuildings	207943000	USD
CY2020	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	782000	USD
CY2019	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	0	USD
CY2018	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	0	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-242000	USD
CY2020	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	-27000	USD
CY2019	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	-3846000	USD
CY2018	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	4916000	USD
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	110840000	USD
CY2019	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	205621000	USD
CY2018	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	110287000	USD
CY2020	stag	Acquisition Of Operating Lease Liabilities AcquisitionOfOperatingLeaseLiabilities	3984000	USD
CY2019	stag	Acquisition Of Operating Lease Liabilities AcquisitionOfOperatingLeaseLiabilities	0	USD
CY2018	stag	Acquisition Of Operating Lease Liabilities AcquisitionOfOperatingLeaseLiabilities	0	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-554623000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1222574000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-507201000	USD
CY2020	us-gaap	Proceeds From Unsecured Lines Of Credit ProceedsFromUnsecuredLinesOfCredit	914000000	USD
CY2019	us-gaap	Proceeds From Unsecured Lines Of Credit ProceedsFromUnsecuredLinesOfCredit	1568000000	USD
CY2018	us-gaap	Proceeds From Unsecured Lines Of Credit ProceedsFromUnsecuredLinesOfCredit	894500000	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	953000000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1522500000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1065000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	400000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	275000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	150000000	USD
CY2020	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	300000000	USD
CY2019	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	USD
CY2018	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	USD
CY2020	us-gaap	Proceeds From Unsecured Notes Payable ProceedsFromUnsecuredNotesPayable	0	USD
CY2019	us-gaap	Proceeds From Unsecured Notes Payable ProceedsFromUnsecuredNotesPayable	0	USD
CY2018	us-gaap	Proceeds From Unsecured Notes Payable ProceedsFromUnsecuredNotesPayable	175000000	USD
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	2983000	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	1926000	USD
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	1843000	USD
CY2020	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	USD
CY2019	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	70000000	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	1129000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	1227000	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	4465000	USD
CY2020	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	425000	USD
CY2019	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2018	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	224283000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	189581000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	158869000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	438499000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	852375000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	386046000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1503000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1602000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1524000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	269176000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	978539000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	303845000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	8475000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-10678000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-5587000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	11864000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	22542000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	28129000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	20339000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	11864000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	22542000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	58704000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	51490000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	46364000	USD
CY2020	us-gaap	Contribution Of Property ContributionOfProperty	674000	USD
CY2019	us-gaap	Contribution Of Property ContributionOfProperty	274000	USD
CY2018	us-gaap	Contribution Of Property ContributionOfProperty	0	USD
CY2020Q4	us-gaap	Longterm Debt Weighted Average Interest Rate LongtermDebtWeightedAverageInterestRate	0.0346
CY2020	us-gaap	Escrow Deposit Disbursements Related To Property Acquisition1 EscrowDepositDisbursementsRelatedToPropertyAcquisition1	674000	USD
CY2019	us-gaap	Escrow Deposit Disbursements Related To Property Acquisition1 EscrowDepositDisbursementsRelatedToPropertyAcquisition1	274000	USD
CY2018	us-gaap	Escrow Deposit Disbursements Related To Property Acquisition1 EscrowDepositDisbursementsRelatedToPropertyAcquisition1	0	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	2202000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	469000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	840000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Intangible Assets Acquired1 NoncashOrPartNoncashAcquisitionIntangibleAssetsAcquired1	362000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Intangible Assets Acquired1 NoncashOrPartNoncashAcquisitionIntangibleAssetsAcquired1	88000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Intangible Assets Acquired1 NoncashOrPartNoncashAcquisitionIntangibleAssetsAcquired1	48000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3714000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	8278000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	147000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	25000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	70000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	25000	USD
CY2020	us-gaap	Debt Issuance Costs Incurred During Noncash Or Partial Noncash Transaction DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction	1065000	USD
CY2019	us-gaap	Debt Issuance Costs Incurred During Noncash Or Partial Noncash Transaction DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction	45000	USD
CY2018	us-gaap	Debt Issuance Costs Incurred During Noncash Or Partial Noncash Transaction DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction	40000	USD
CY2020	stag	Preferred Shares Called For Redemption And Reclassified To Liabilities PreferredSharesCalledForRedemptionAndReclassifiedToLiabilities	0	USD
CY2019	stag	Preferred Shares Called For Redemption And Reclassified To Liabilities PreferredSharesCalledForRedemptionAndReclassifiedToLiabilities	0	USD
CY2018	stag	Preferred Shares Called For Redemption And Reclassified To Liabilities PreferredSharesCalledForRedemptionAndReclassifiedToLiabilities	70000000	USD
CY2020	stag	Leases Cumulative Effect Adjustment LeasesCumulativeEffectAdjustment	0	USD
CY2019	stag	Leases Cumulative Effect Adjustment LeasesCumulativeEffectAdjustment	214000	USD
CY2018	stag	Leases Cumulative Effect Adjustment LeasesCumulativeEffectAdjustment	0	USD
CY2020Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	19379000	USD
CY2019Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	17465000	USD
CY2018Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	13754000	USD
CY2020Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	492	building
CY2020Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	39	state
CY2020Q4	us-gaap	Area Of Real Estate Property AreaOfRealEstateProperty	98200000	sqft
CY2020	stag	Rent Deferrals Recognized RentDeferralsRecognized	2100000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="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%">Use of Estimates</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with generally accepted accounting principles (“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 revenue and expenses during the reporting period. Actual results could differ from those estimates.</span></div>
CY2020	stag	Writeoffoffullyamortizeddeferredleasingintangibleassets Writeoffoffullyamortizeddeferredleasingintangibleassets	62000000.0	USD
CY2020	stag	Writeoffoffullyamortizeddeferredleasingintangibleliabilities Writeoffoffullyamortizeddeferredleasingintangibleliabilities	2300000	USD
CY2019	stag	Writeoffoffullyamortizeddeferredleasingintangibleassets Writeoffoffullyamortizeddeferredleasingintangibleassets	87700000	USD
CY2019	stag	Writeoffoffullyamortizeddeferredleasingintangibleliabilities Writeoffoffullyamortizeddeferredleasingintangibleliabilities	5500000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	15666000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9041000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	4673000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	2823000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	20339000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	11864000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	4900000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Ordinary Income CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesOrdinaryIncome	1.186648
CY2020	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Ordinary Incomeas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesOrdinaryIncomeasPercentageofDividendDeclared	0.785
CY2019	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Ordinary Income CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesOrdinaryIncome	0.888657
CY2019	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Ordinary Incomeas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesOrdinaryIncomeasPercentageofDividendDeclared	0.622
CY2018	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Ordinary Income CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesOrdinaryIncome	1.051783
CY2018	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Ordinary Incomeas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesOrdinaryIncomeasPercentageofDividendDeclared	0.741
CY2020	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Return Of Capital CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesReturnOfCapital	0
CY2020	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Returnof Capitalas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesReturnofCapitalasPercentageofDividendDeclared	0
CY2019	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Return Of Capital CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesReturnOfCapital	0.538270
CY2019	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Returnof Capitalas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesReturnofCapitalasPercentageofDividendDeclared	0.377
CY2018	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Return Of Capital CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesReturnOfCapital	0.133170
CY2018	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Returnof Capitalas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesReturnofCapitalasPercentageofDividendDeclared	0.094
CY2020	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Unrecaptured Capital Gain CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesUnrecapturedCapitalGain	0.088246
CY2020	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Unrecaptured Capital Gainas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesUnrecapturedCapitalGainasPercentageofDividendDeclared	0.059
CY2019	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Unrecaptured Capital Gain CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesUnrecapturedCapitalGain	0
CY2019	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Unrecaptured Capital Gainas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesUnrecapturedCapitalGainasPercentageofDividendDeclared	0
CY2018	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Unrecaptured Capital Gain CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesUnrecapturedCapitalGain	0.110647
CY2018	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Unrecaptured Capital Gainas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesUnrecapturedCapitalGainasPercentageofDividendDeclared	0.078
CY2020	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Other Capital Gain CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesOtherCapitalGain	0.235943
CY2020	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Other Capital Gainas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesOtherCapitalGainasPercentageofDividendDeclared	0.156
CY2019	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Other Capital Gain CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesOtherCapitalGain	0
CY2019	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Other Capital Gainas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesOtherCapitalGainasPercentageofDividendDeclared	0
CY2018	stag	Common Stock Dividend Per Share Tax Treatment For Income Tax Purposes Other Capital Gain CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesOtherCapitalGain	0.123563
CY2018	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposes Other Capital Gainas Percentageof Dividend Declared CommonStockDividendTaxTreatmentforIncomeTaxPurposesOtherCapitalGainasPercentageofDividendDeclared	0.087
CY2020	stag	Common Stock Dividend Per Share Tax Treatmentfor Income Tax Purposes Qualified Dividend CommonStockDividendPerShareTaxTreatmentforIncomeTaxPurposesQualifiedDividend	0
CY2020	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposesasapercentfor Qualified Dividend CommonStockDividendTaxTreatmentforIncomeTaxPurposesasapercentforQualifiedDividend	0
CY2019	stag	Common Stock Dividend Per Share Tax Treatmentfor Income Tax Purposes Qualified Dividend CommonStockDividendPerShareTaxTreatmentforIncomeTaxPurposesQualifiedDividend	0.002243
CY2019	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposesasapercentfor Qualified Dividend CommonStockDividendTaxTreatmentforIncomeTaxPurposesasapercentforQualifiedDividend	0.001
CY2018	stag	Common Stock Dividend Per Share Tax Treatmentfor Income Tax Purposes Qualified Dividend CommonStockDividendPerShareTaxTreatmentforIncomeTaxPurposesQualifiedDividend	0
CY2018	stag	Common Stock Dividend Tax Treatmentfor Income Tax Purposesasapercentfor Qualified Dividend CommonStockDividendTaxTreatmentforIncomeTaxPurposesasapercentforQualifiedDividend	0
CY2020	stag	Common Stock Dividends Per Share Tax Treatment For Income Tax Purposes Declared CommonStockDividendsPerShareTaxTreatmentForIncomeTaxPurposesDeclared	1.510837
CY2019	stag	Common Stock Dividends Per Share Tax Treatment For Income Tax Purposes Declared CommonStockDividendsPerShareTaxTreatmentForIncomeTaxPurposesDeclared	1.429170
CY2018	stag	Common Stock Dividends Per Share Tax Treatment For Income Tax Purposes Declared CommonStockDividendsPerShareTaxTreatmentForIncomeTaxPurposesDeclared	1.419163
CY2020	us-gaap	Revenue Recognition Leases Operating RevenueRecognitionLeasesOperating	<div style="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%">Revenue Recognition</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">All current leases are classified as operating leases and rental income is recognized on a straight-line basis over the term of the lease (and expected bargain renewal terms or assumed exercise of early termination options) when collectability is reasonably assured. Differences between rental income earned and amounts due under the lease are charged or credited, as applicable, to accrued rental income. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company determined that for all leases where the Company is the lessor, that the timing and pattern of transfer of the non-lease components and associated lease components are the same, and that the lease components, if accounted for separately, would be classified as an operating lease. Accordingly, the Company has made an accounting policy election to recognize the combined component in accordance with Topic 842 as rental income on the accompanying Consolidated Statements of Operations. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Rental income recognition commences when the tenant takes possession of or controls the physical use of the leased space and the leased space is substantially complete and ready for its intended use. In order to determine whether the leased space is substantially complete and ready for its intended use, the Company determines whether the Company or the tenant own the tenant improvements. When it is determined that the Company is the owner of the tenant improvements, rental income recognition begins when the tenant takes possession of or controls the physical use of the finished space, which is generally when the Company owned tenant improvements are completed. In instances when it is determined that the tenant is the owner of tenant improvements, rental income recognition begins when the tenant takes possession of or controls the physical use of the leased space. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">When the Company is the owner of tenant improvements or other capital items, the cost to construct the tenant improvements or other capital items, including costs paid for or reimbursed by the tenants, is recorded as capital assets. For these tenant improvements or other capital items, the amount funded by or reimbursed by the tenants are recorded as deferred revenue, which is amortized on a straight-line basis as income over the shorter of the useful life of the capital asset or the term of the related lease. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Early lease termination fees are recorded in rental income on a straight-line basis from the notification date of such termination to the then remaining (not the original) lease term, if any, or upon collection if collection is not reasonably assured.</span></div>The Company evaluates cash basis versus accrual basis of rental income recognition based on the collectability of future lease payments.
CY2020	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	0	USD
CY2019	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	0	USD
CY2018	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	0	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1700000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1200000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	900000	USD
CY2018Q4	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	0	USD
CY2019Q4	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	0	USD
CY2020Q4	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	0	USD
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2018	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="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%">Concentrations of Credit Risk</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Concentrations of credit risk relevant to the Company may arise when a number of financing arrangements, including revolving credit facilities or derivatives, are entered into with the same lenders or counterparties, and have similar economic features that would cause their inability to meet contractual obligations. The Company mitigates the concentration of credit risk as it relates to financing arrangements by entering into loan syndications with multiple, reputable financial institutions and diversifying its debt counterparties. The Company also reduces exposure by diversifying its derivatives across multiple counterparties who meet established credit and capital guidelines. </span></div>Concentrations of credit risk may also arise when the Company enters into leases with multiple tenants concentrated in the same industry, or into a significant lease or multiple leases with a single tenant, or tenants are located in the same geographic region, or have similar economic features that would cause their inability to meet contractual obligations, including those to the Company, to be similarly affected. The Company regularly monitors its tenant base to assess potential concentrations of credit risk through financial statement review, tenant management calls, and press releases. Management believes the current credit risk portfolio is reasonably well diversified and does not contain any unusual concentration of credit risk.
CY2020Q4	us-gaap	Property Subject To Or Available For Operating Lease Net PropertySubjectToOrAvailableForOperatingLeaseNet	4525193000	USD
CY2019Q4	us-gaap	Property Subject To Or Available For Operating Lease Net PropertySubjectToOrAvailableForOperatingLeaseNet	3998507000	USD
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Land BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand	67937000	USD
CY2019Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Land BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand	96379000	USD
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Buildings BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings	546808000	USD
CY2019Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Buildings BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings	814541000	USD
CY2020Q4	stag	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Leasehold Improvements BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLeaseholdImprovements	7388000	USD
CY2019Q4	stag	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Leasehold Improvements BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLeaseholdImprovements	12661000	USD
CY2020Q4	stag	Business Acquisition Purchase Price Allocation Building And Land Improvements BusinessAcquisitionPurchasePriceAllocationBuildingAndLandImprovements	41361000	USD
CY2019Q4	stag	Business Acquisition Purchase Price Allocation Building And Land Improvements BusinessAcquisitionPurchasePriceAllocationBuildingAndLandImprovements	69903000	USD
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Prepaid Expense And Other Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets	669000	USD
CY2019Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Prepaid Expense And Other Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets	2032000	USD
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther	450000	USD
CY2019Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther	2736000	USD
CY2020Q4	stag	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net Before Debt Incurred BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetBeforeDebtIncurred	775815000	USD
CY2019Q4	stag	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net Before Debt Incurred BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetBeforeDebtIncurred	1203961000	USD
CY2020	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	16957000	USD
CY2019	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	35042000	USD
CY2020	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	2194000	USD
CY2019	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	6302000	USD
CY2020Q3	stag	Numberof Buildings Impaired NumberofBuildingsImpaired	1	building
CY2020Q4	stag	Numberof Buildings Impaired NumberofBuildingsImpaired	5	building
CY2019Q1	stag	Numberof Buildings Impaired NumberofBuildingsImpaired	1	building
CY2019Q3	stag	Numberof Buildings Impaired NumberofBuildingsImpaired	5	building
CY2018Q1	stag	Numberof Buildings Impaired NumberofBuildingsImpaired	1	building
CY2018Q1	stag	Numberof Buildings Impaired NumberofBuildingsImpaired	1	building
CY2018Q4	stag	Numberof Buildings Impaired NumberofBuildingsImpaired	1	building
CY2018Q4	stag	Numberof Buildings Impaired NumberofBuildingsImpaired	1	building
CY2020Q3	stag	Fair Value Inputs Discount Rates FairValueInputsDiscountRates	0.105
CY2020Q3	stag	Fair Value Inputs Exit Capitalization Rate FairValueInputsExitCapitalizationRate	0.100
CY2020Q4	stag	Fair Value Inputs Discount Rates FairValueInputsDiscountRates	0.110
CY2020Q4	stag	Fair Value Inputs Exit Capitalization Rate FairValueInputsExitCapitalizationRate	0.100
CY2019Q1	stag	Fair Value Inputs Discount Rates FairValueInputsDiscountRates	0.120	Rate
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	1645013000	USD
CY2020Q4	us-gaap	Debt Instrument Unused Borrowing Capacity Amount DebtInstrumentUnusedBorrowingCapacityAmount	390000000.0	USD
CY2019Q1	stag	Fair Value Inputs Exit Capitalization Rate FairValueInputsExitCapitalizationRate	0.120	Rate
CY2019Q3	stag	Fair Value Inputs Discount Rates FairValueInputsDiscountRates	0.130	Rate
CY2019Q3	stag	Fair Value Inputs Exit Capitalization Rate FairValueInputsExitCapitalizationRate	0.120	Rate
CY2018Q4	stag	Fair Value Inputs Discount Rates FairValueInputsDiscountRates	0.120	Rate
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	757807000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	258005000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	499802000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	716453000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	241304000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	475149000	USD
CY2020Q4	us-gaap	Below Market Lease Gross BelowMarketLeaseGross	48521000	USD
CY2020Q4	us-gaap	Below Market Lease Accumulated Amortization BelowMarketLeaseAccumulatedAmortization	15759000	USD
CY2020Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	32762000	USD
CY2019Q4	us-gaap	Below Market Lease Gross BelowMarketLeaseGross	38802000	USD
CY2019Q4	us-gaap	Below Market Lease Accumulated Amortization BelowMarketLeaseAccumulatedAmortization	12064000	USD
CY2019Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	26738000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	1703290000	USD
CY2020Q4	us-gaap	Below Market Lease Gross BelowMarketLeaseGross	48521000	USD
CY2020Q4	us-gaap	Below Market Lease Accumulated Amortization BelowMarketLeaseAccumulatedAmortization	15759000	USD
CY2020Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	32762000	USD
CY2019Q4	us-gaap	Below Market Lease Gross BelowMarketLeaseGross	38802000	USD
CY2019Q4	us-gaap	Below Market Lease Accumulated Amortization BelowMarketLeaseAccumulatedAmortization	12064000	USD
CY2019Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	26738000	USD
CY2020	stag	Netdecreasetorentalincomerelatedtoaboveandbelowmarketleaseamortization Netdecreasetorentalincomerelatedtoaboveandbelowmarketleaseamortization	4363000	USD
CY2019	stag	Netdecreasetorentalincomerelatedtoaboveandbelowmarketleaseamortization Netdecreasetorentalincomerelatedtoaboveandbelowmarketleaseamortization	4884000	USD
CY2018	stag	Netdecreasetorentalincomerelatedtoaboveandbelowmarketleaseamortization Netdecreasetorentalincomerelatedtoaboveandbelowmarketleaseamortization	4164000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2316000	USD
CY2020Q2	stag	Line Of Credit Facility Accordion Feature Increase Limit LineOfCreditFacilityAccordionFeatureIncreaseLimit	600000000.0	USD
CY2019	us-gaap	Debt Instrument Covenant Compliance DebtInstrumentCovenantCompliance	The Company was in compliance with all such applicable restrictions and financial covenants
CY2020	us-gaap	Debt Instrument Covenant Compliance DebtInstrumentCovenantCompliance	The Company was in compliance with all such applicable restrictions and financial covenants
CY2020Q4	us-gaap	Debt Instrument Collateral Amount DebtInstrumentCollateralAmount	81400000	USD
CY2019Q4	us-gaap	Debt Instrument Collateral Amount DebtInstrumentCollateralAmount	85500000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1709102000	USD
CY2020Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	1768508000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1651085000	USD
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	1691514000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	5841000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	6111000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	1703290000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	1645013000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	2064000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	196743000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	660295000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	225000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	375000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	250000000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1709102000	USD
CY2020Q4	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	8000000	shares
CY2020Q4	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	30.02
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	4518077	shares
CY2020Q4	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	135000000.0	USD
CY2020Q1	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	10062500	shares
CY2020Q1	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	30.9022
CY2020Q1	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	173100000	USD
CY2019Q3	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	12650000	shares
CY2019Q3	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	28.60
CY2019Q3	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	157300000	USD
CY2019Q4	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	202300000	USD
CY2019Q2	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	7475000	shares
CY2019Q2	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	28.72
CY2019Q2	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	214700000	USD
CY2020Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.44
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.119167
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.430004
CY2020	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	371088000	USD
CY2019	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	313426000	USD
CY2020	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	103389000	USD
CY2019	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	84927000	USD
CY2020	us-gaap	Straight Line Rent Adjustments StraightLineRentAdjustments	-12711000	USD
CY2019	us-gaap	Straight Line Rent Adjustments StraightLineRentAdjustments	-11881000	USD
CY2020	stag	Netdecreasetorentalincomerelatedtoaboveandbelowmarketleaseamortization Netdecreasetorentalincomerelatedtoaboveandbelowmarketleaseamortization	4363000	USD
CY2019	stag	Netdecreasetorentalincomerelatedtoaboveandbelowmarketleaseamortization Netdecreasetorentalincomerelatedtoaboveandbelowmarketleaseamortization	4884000	USD
CY2020	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	482825000	USD
CY2019	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	405350000	USD
CY2020	stag	Accrued Rent Adjustment To Rental Income Resulting From Lease Collectibility Assessment AccruedRentAdjustmentToRentalIncomeResultingFromLeaseCollectibilityAssessment	1700000	USD
CY2019	stag	Accrued Rent Adjustment To Rental Income Resulting From Lease Collectibility Assessment AccruedRentAdjustmentToRentalIncomeResultingFromLeaseCollectibilityAssessment	0	USD
CY2020	stag	Contractual Rent Adjustment To Rental Income Resulting From Lease Collectibility Assessment ContractualRentAdjustmentToRentalIncomeResultingFromLeaseCollectibilityAssessment	2200000	USD
CY2019	stag	Contractual Rent Adjustment To Rental Income Resulting From Lease Collectibility Assessment ContractualRentAdjustmentToRentalIncomeResultingFromLeaseCollectibilityAssessment	0	USD
CY2020Q4	stag	Lease Security Deposits Available In Letters Of Credit LeaseSecurityDepositsAvailableInLettersOfCredit	30100000	USD
CY2019Q4	stag	Lease Security Deposits Available In Letters Of Credit LeaseSecurityDepositsAvailableInLettersOfCredit	22600000	USD
CY2020Q4	us-gaap	Security Deposit SecurityDeposit	700000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	77737000	USD
CY2019Q4	us-gaap	Security Deposit SecurityDeposit	700000	USD
CY2020Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	11000000.0	USD
CY2019Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	9800000	USD
CY2020	stag	Real Estate Taxes Tenant Responsibility RealEstateTaxesTenantResponsibility	21100000	USD
CY2019	stag	Real Estate Taxes Tenant Responsibility RealEstateTaxesTenantResponsibility	19100000	USD
CY2018	stag	Real Estate Taxes Tenant Responsibility RealEstateTaxesTenantResponsibility	15000000.0	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	399881000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	369168000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	325435000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	277924000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	231246000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	836734000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P29Y10M24D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P36Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.068	Rate
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.071	Rate
CY2020	us-gaap	Lease Cost LeaseCost	3016000	USD
CY2019	us-gaap	Lease Cost LeaseCost	2389000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	2355000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	2282000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	7718000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	2309000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	3188000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3248000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3291000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3336000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	62365000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	49839000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	27898000	USD
CY2020	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	187283	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	217623	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	195281	shares
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	196720000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	43811000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	82385000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	148791000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	125389000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	103401000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	12000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	5000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	149215000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	125678000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	103807000	shares
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.32
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.35
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.80
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.32
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.35
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.79
CY2020Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	3000000.0	USD
CY2020	stag	Defined Contribution Plan Requisite Service Periodfor Eligibility DefinedContributionPlanRequisiteServicePeriodforEligibility	P3M
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2020	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.060
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	300000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	400000	USD
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	300000	USD
CY2020	stag	Defined Contribution Plan Requisite Service Period DefinedContributionPlanRequisiteServicePeriod	P3Y
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	0	USD
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	0	USD
CY2020	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	0	USD
CY2020Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	0	USD
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	758000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	0	USD
CY2019	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	758000	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	0	USD
CY2017Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	311000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	1050000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	603000	USD
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	758000	USD
CY2020Q4	srt	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	52102000	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	495466000	USD
CY2020Q4	srt	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	5500000000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	3831931000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	492827000	USD
CY2020Q4	stag	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition And Valuation Provision RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionAndValuationProvision	196543000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	4028474000	USD
CY2020Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	492827000	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4521301000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	3959883000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2966616000	USD
CY2017Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2524112000	USD
CY2020	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	664616000	USD
CY2019	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	995516000	USD
CY2018	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	565645000	USD
CY2020	us-gaap	Real Estate Improvements RealEstateImprovements	59702000	USD
CY2019	us-gaap	Real Estate Improvements RealEstateImprovements	73666000	USD
CY2018	us-gaap	Real Estate Improvements RealEstateImprovements	34458000	USD
CY2020	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	0	USD
CY2019	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	0	USD
CY2018	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	0	USD
CY2020	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	152716000	USD
CY2019	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	43396000	USD
CY2018	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	150692000	USD
CY2020	stag	Sec Schedule Iii Write Down Or Reserve Amount Tenant Improvements SECScheduleIIIWriteDownOrReserveAmountTenantImprovements	5025000	USD
CY2019	stag	Sec Schedule Iii Write Down Or Reserve Amount Tenant Improvements SECScheduleIIIWriteDownOrReserveAmountTenantImprovements	22781000	USD
CY2018	stag	Sec Schedule Iii Write Down Or Reserve Amount Tenant Improvements SECScheduleIIIWriteDownOrReserveAmountTenantImprovements	1334000	USD
CY2020	stag	Sec Schedule Iii Real Estate Writedownor Reserve Excluding Tenant Improvements Amount SECScheduleIIIRealEstateWritedownorReserveExcludingTenantImprovementsAmount	5159000	USD
CY2019	stag	Sec Schedule Iii Real Estate Writedownor Reserve Excluding Tenant Improvements Amount SECScheduleIIIRealEstateWritedownorReserveExcludingTenantImprovementsAmount	9738000	USD
CY2018	stag	Sec Schedule Iii Real Estate Writedownor Reserve Excluding Tenant Improvements Amount SECScheduleIIIRealEstateWritedownorReserveExcludingTenantImprovementsAmount	5573000	USD
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	4521301000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	3959883000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2966616000	USD
CY2017Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	251943000	USD
CY2020	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	126382000	USD
CY2019	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	107867000	USD
CY2020	stag	Schedule Iii Investmentin Real Estate Heldfor Sale ScheduleIIIInvestmentinRealEstateHeldforSale	562000	USD
CY2019	stag	Schedule Iii Investmentin Real Estate Heldfor Sale ScheduleIIIInvestmentinRealEstateHeldforSale	48892000	USD
CY2018	stag	Schedule Iii Investmentin Real Estate Heldfor Sale ScheduleIIIInvestmentinRealEstateHeldforSale	0	USD
CY2020Q4	stag	Real Estate Excluding Heldfor Sale RealEstateExcludingHeldforSale	4520739000	USD
CY2019Q4	stag	Real Estate Excluding Heldfor Sale RealEstateExcludingHeldforSale	3910991000	USD
CY2018Q4	stag	Real Estate Excluding Heldfor Sale RealEstateExcludingHeldforSale	2966616000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	393506000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	316930000	USD
CY2018	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	90320000	USD
CY2020	us-gaap	Real Estate Accumulated Depreciation Other Additions RealEstateAccumulatedDepreciationOtherAdditions	0	USD
CY2019	us-gaap	Real Estate Accumulated Depreciation Other Additions RealEstateAccumulatedDepreciationOtherAdditions	0	USD
CY2018	us-gaap	Real Estate Accumulated Depreciation Other Additions RealEstateAccumulatedDepreciationOtherAdditions	0	USD
CY2020	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	24422000	USD
CY2019	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	31291000	USD
CY2018	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	25333000	USD
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	495466000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	393506000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	316930000	USD
CY2020	stag	Schedule Iii Accumulated Depreciationof Assets Heldfor Sale ScheduleIIIAccumulatedDepreciationofAssetsHeldforSale	118000	USD
CY2019	stag	Schedule Iii Accumulated Depreciationof Assets Heldfor Sale ScheduleIIIAccumulatedDepreciationofAssetsHeldforSale	5873000	USD
CY2018	stag	Schedule Iii Accumulated Depreciationof Assets Heldfor Sale ScheduleIIIAccumulatedDepreciationofAssetsHeldforSale	0	USD
CY2020Q4	stag	Real Estate Accumulated Depreciation Excluding Heldfor Sale RealEstateAccumulatedDepreciationExcludingHeldforSale	495348000	USD
CY2019Q4	stag	Real Estate Accumulated Depreciation Excluding Heldfor Sale RealEstateAccumulatedDepreciationExcludingHeldforSale	387633000	USD
CY2018Q4	stag	Real Estate Accumulated Depreciation Excluding Heldfor Sale RealEstateAccumulatedDepreciationExcludingHeldforSale	316930000	USD

Files In Submission

Name	View Source	Status
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$STAG
STAG Industrial, Inc. Stock $stag

2020 Q4 Form 10-K Financial Statement

#000147909421000007 Filed on February 10, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$STAG STAG Industrial, Inc. Stock $stag

2020 Q4 Form 10-K Financial Statement

#000147909421000007 Filed on February 10, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$STAG
STAG Industrial, Inc. Stock $stag