Name:	stag_CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesOrdinaryIncome
Namespace Prefix:	stag_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

Represents the tax treatment of common dividends per share for federal income tax purposes declared as other capital gain.

No definition available.

Name:	stag_CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesOtherCapitalGain
Namespace Prefix:	stag_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

Represents the tax treatment of common dividends per share for federal income tax purposes declared as a distribution of return of capital.

No definition available.

Name:	stag_CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesReturnOfCapital
Namespace Prefix:	stag_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

Represents the tax treatment of common dividends per share for federal income tax purposes declared as un-recaptured capital gain.

No definition available.

Name:	stag_CommonStockDividendPerShareTaxTreatmentForIncomeTaxPurposesUnrecapturedCapitalGain
Namespace Prefix:	stag_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

Represents the tax treatment of common dividends per share for federal income tax purposes declared as an ordinary income, expressed as a percentage of the total dividend declared.

No definition available.

Name:	stag_CommonStockDividendTaxTreatmentforIncomeTaxPurposesOrdinaryIncomeasPercentageofDividendDeclared
Namespace Prefix:	stag_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Represents the tax treatment of common dividends per share for federal income tax purposes declared as other capital gain, expressed as a percentage of the total dividend declared.

No definition available.

Name:	stag_CommonStockDividendTaxTreatmentforIncomeTaxPurposesOtherCapitalGainasPercentageofDividendDeclared
Namespace Prefix:	stag_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Represents the tax treatment of common dividends per share for federal income tax purposes declared as a return of capital, expressed as percentage of the total dividend declared.

No definition available.

Name:	stag_CommonStockDividendTaxTreatmentforIncomeTaxPurposesReturnofCapitalasPercentageofDividendDeclared
Namespace Prefix:	stag_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Represents the tax treatment of common dividends per share for federal income tax purposes declared as un-recaptured capital gain, expressed as a percentage of the total dividend declared.

No definition available.

Name:	stag_CommonStockDividendTaxTreatmentforIncomeTaxPurposesUnrecapturedCapitalGainasPercentageofDividendDeclared
Namespace Prefix:	stag_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Represents the tax treatment of common dividends declared per share for federal income tax purposes.

No definition available.

Name:	stag_CommonStockDividendsPerShareTaxTreatmentForIncomeTaxPurposesDeclared
Namespace Prefix:	stag_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.