XML 47 R40.htm IDEA: XBRL DOCUMENT v3.24.3

Leases - Schedule of Significant Tenants by Revenue (Detail) - Property	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Subsidiaries of ARKO Corp. (NASDAQ: ARKO) [Member]
Leases [Line Items]
Number of properties	148	150
Subsidiaries of ARKO Corp. (NASDAQ: ARKO) [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Leases [Line Items]
% of Total Revenues	14.00%	15.00%
Subsidiaries of Global Partners LP (NYSE GLP) [Member]
Leases [Line Items]
Number of properties	128	150
Subsidiaries of Global Partners LP (NYSE GLP) [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Leases [Line Items]
% of Total Revenues	12.00%	15.00%
Apro, LLC (d/b/a United Oil) [Member]
Leases [Line Items]
Number of properties	77	77
Apro, LLC (d/b/a United Oil) [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Leases [Line Items]
% of Total Revenues	9.00%	10.00%

X

- Definition

Leases.

+ References

No definition available.

+ Details

Name:	gty_LeasesLineItems
Namespace Prefix:	gty_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The aggregate number of properties currently being leased to subsidiaries of our tenant.

+ References

No definition available.

+ Details

Name:	gty_NumberOfLeasedProperties
Namespace Prefix:	gty_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-21

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-20

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-20

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=gty_SubsidiariesOfARKOCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=gty_SubsidiariesOfGlobalPartnersLpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=gty_AproLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: