XML 37 R30.htm IDEA: XBRL DOCUMENT
v3.24.2

Leases - Additional Information (Detail) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2024 USD ($) State Property | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) State Property | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) | Jan. 01, 2019 USD ($)
Leases [Line Items] |  |  |  |  |  |
Number of properties in portfolio | Property | 1,124 |  | 1,124 |  |  |
Number of states in which our properties are located | State | 42 |  | 42 |  |  |
Revenues from rental properties | $ 48,720 | $ 43,658 | $ 95,935 | $ 86,025 |  |
Rental income contractually due from tenants in revenues from rental properties included in continuing operations | 45,500 | 39,900 | 89,400 | 79,000 |  |
Revenue non-cash adjustments included in revenues from rental properties in continuing operations | 5 | (200) | 300 | (400) |  |
Real Estate Taxes and other municipal charges paid then reimbursed by tenants included in revenues and expenses | 3,000 | $ 3,900 | 5,800 | $ 7,500 |  |
Operating lease liabilities | 14,791 |  | 14,791 |  | $ 16,051 |
Operating lease right of use assets | $ 13,426 |  | 13,426 |  | 14,571 |
Accounting Standards Update 2016-02 [Member] |  |  |  |  |  |
Leases [Line Items] |  |  |  |  |  |
Operating lease liabilities |  |  |  |  |  | $ 26,100
Operating lease right of use assets |  |  |  |  |  | $ 25,600
Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |
Leases [Line Items] |  |  |  |  |  |
Net Investment in direct financing lease, additional allowance for credit losses |  |  | $ 800 |  | $ 800 |
Third Party Landlords [Member] |  |  |  |  |  |
Leases [Line Items] |  |  |  |  |  |
Number of properties leased | Property | 36 |  | 36 |  |  |
Owned Properties [Member] |  |  |  |  |  |
Leases [Line Items] |  |  |  |  |  |
Number of properties | Property | 1,088 |  | 1,088 |  |  |

X
- Definition Capital leases net investment in direct financing leases increase decrease in allowance for credit losses. + References No definition available. + Details
Name: | gty_CapitalLeasesNetInvestmentInDirectFinancingLeasesIncreaseDecreaseInAllowanceForCreditLosses
Namespace Prefix: | gty_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The total amount of revenue recognized for the period from operating leases, direct financing leases, above and below market leases and sublease revenue. + References No definition available. + Details
Name: | gty_IncomeStatementLeaseRevenue
Namespace Prefix: | gty_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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 number of real estate properties in the portfolio, consisting of properties owned and properties leased from third party landlords. + References No definition available. + Details
Name: | gty_NumberOfPropertiesInPortfolio
Namespace Prefix: | gty_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of real estate properties leased from third-party landlords as of the balance sheet date. + References No definition available. + Details
Name: | gty_NumberOfPropertiesLeasedFromLandlords
Namespace Prefix: | gty_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of states in which the company's properties, comprised of those that are owned and those that are leased from third party landlords, are located. + References No definition available. + Details
Name: | gty_NumberOfStatesInWhichPropertiesAreLocated
Namespace Prefix: | gty_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Real estate non-cash adjustments. + References No definition available. + Details
Name: | gty_RealEstateNonCashAdjustments
Namespace Prefix: | gty_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The dollar amount of real estate taxes and other municipal charges paid by the company and then reimbursed by tenants included in revenues from rental properties and rental property expenses. + References No definition available. + Details
Name: | gty_RealEstateTaxesAndOtherMunicipalChargesPaidThenReimbursedByTenantsIncludedInRevenuesAndExpenses
Namespace Prefix: | gty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479773/842-30-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-6A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479016/842-30-45-3 + Details
Name: | us-gaap_OperatingLeaseLeaseIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
Name: | us-gaap_OperatingLeaseLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201602Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201613Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=gty_ThirdPartyLandlordsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstatePropertiesAxis=us-gaap_WhollyOwnedPropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |