XML 64 R49.htm IDEA: XBRL DOCUMENT
v3.25.0.1

LEASES - As Lessor (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2024 | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Lessor Accounting |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, option to extend |  |  |  |  |  |  |  |  |  | true |  |
Operating Lease, option to terminate |  |  |  |  |  |  |  |  |  | true |  |
Practical expedient, single lease component |  | false |  |  |  |  |  |  |  | false |  |
Components of lease revenues |  |  |  |  |  |  |  |  |  |  |  |
Fixed lease revenues |  |  |  |  |  |  |  |  |  | $ 74,193,000 | $ 75,935,000 | $ 74,101,000
Variable lease revenues |  |  |  |  |  |  |  |  |  | 14,910,000 | 13,759,000 | 17,259,000
Lease revenues |  |  |  |  |  |  |  |  |  | 89,103,000 | 89,694,000 | 91,360,000
Additional rent accrued from a ground lease tenant |  |  |  |  |  |  |  |  |  |  |  | 4,626,000
Amortization related to lease intangible assets and liabilities |  |  |  |  |  |  |  |  |  | 1,210,000 | 952,000 | 831,000
Lease Termination Fee |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  | $ 23,856,000 | $ 22,211,000 | $ 21,800,000 | $ 22,696,000 | $ 22,741,000 | $ 22,546,000 | $ 22,407,000 | $ 22,952,000 | 90,563,000 | $ 90,646,000 | 92,216,000
Lease termination fees |  |  |  |  |  |  |  |  |  |  |  |
Lease Termination Fee |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  | $ 250,000 |  | $ 25,000
Consolidated VIE 1 |  |  |  |  |  |  |  |  |  |  |  |
Lease Termination Fee |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in consolidated joint venture of the company (as a percent) |  |  |  |  |  |  |  |  |  | 90.00% |  |
Consolidated VIE 1 | Multi-Tenant Shopping Center, Lakewood, Colorado |  |  |  |  |  |  |  |  |  |  |  |
Lease Termination Fee |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in consolidated joint venture of the company (as a percent) | 90.00% |  |  |  |  |  |  |  |  |  |  |
Consolidated VIE 1 | Multi-Tenant Shopping Center, Lakewood, Colorado | Lease termination fees |  |  |  |  |  |  |  |  |  |  |  |
Lease Termination Fee |  |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ 250,000 |  |  |  |  |  |  |  |  |  |  |

X
- Definition Additional rent accrued from ground lease tenant. + References No definition available. + Details
Name: | olp_AdditionalRentAccruedFromGroundLeaseTenant
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition n/a + References No definition available. + Details
Name: | olp_LeaseTerminationFeesAbstract
Namespace Prefix: | olp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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. Excluding amortization related to lease intangible assets and liabilities. + References No definition available. + Details
Name: | olp_OperatingLeaseLeaseIncomeExcludingAmortizationRelatedToLeaseIntangibleAssetsAndLiabilities
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of operating lease income from lease payments paid and payable to lessor. Excludes variable lease payments not included in measurement of lease receivable. Also excludes amortization related to lease intangible assets and liabilities. + References No definition available. + Details
Name: | olp_OperatingLeaseLeaseIncomeLeasePaymentsExcludingAmortizationRelatedToLeaseIntangibleAssetsAndLiabilities
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of operating lease income from variable lease payments paid and payable to lessor, excluding amount included in measurement of lease receivable. Also excluding amortization related to lease intangible assets and liabilities. + References No definition available. + Details
Name: | olp_OperatingLeaseVariableLeaseIncomeExcludingAmortizationRelatedToLeaseIntangibleAssetsAndLiabilities
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of non-cash amortization of intangible asset (liability) for above and below market leases. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_AmortizationOfAboveAndBelowMarketLeases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Indicates (true false) whether practical expedient is elected to account for lease component and nonlease component as single lease component. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Subparagraph (a) -SubTopic 30 -Topic 842 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479773/842-30-50-3A + Details
Name: | us-gaap_LeasePracticalExpedientLessorSingleLeaseComponent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:booleanItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LessorDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Indicates (true false) whether lessor has option to extend operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479773/842-30-50-3 + Details
Name: | us-gaap_LessorOperatingLeaseExistenceOfOptionToExtend
Namespace Prefix: | us-gaap_
Data Type: | xbrli:booleanItemType
Balance Type: | na
Period Type: | duration

X
- Definition Indicates (true false) whether lessor has option to terminate operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479773/842-30-50-3 + Details
Name: | us-gaap_LessorOperatingLeaseExistenceOfOptionToTerminate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:booleanItemType
Balance Type: | na
Period Type: | duration

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
- References No definition available. + Details
Name: | us-gaap_OperatingLeasesLeaseIncomeAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-5A + Details
Name: | us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ProductOrServiceAxis=olp_LeaseTerminationFeeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=olp_VariableInterestEntityOnePrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=olp_MultiTenantShoppingCenterLakewoodColoradoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |