XML 72 R57.htm IDEA: XBRL DOCUMENT v3.25.0.1

REAL ESTATE INVESTMENTS - Market capitalization rate and discount rates (Details) - Level 3	Dec. 31, 2024	Dec. 31, 2023
Real Estate Acquisitions in 2024 | Quality Custom Distribution Services, Inc. in Albuquerque, New Mexico
REAL ESTATE INVESTMENTS
Market Cap Rate	0.0675
Real Estate Acquisitions in 2024 | Quality Custom Distribution Services, Inc. in Albuquerque, New Mexico | Intangible, Lease Assets
REAL ESTATE INVESTMENTS
Discount Rate	0.0714
Real Estate Acquisitions in 2024 | Russell Equipment, Inc. in Savannah, Georgia
REAL ESTATE INVESTMENTS
Market Cap Rate	0.07
Real Estate Acquisitions in 2024 | Russell Equipment, Inc. in Savannah, Georgia | Intangible, Lease Assets
REAL ESTATE INVESTMENTS
Discount Rate	0.0715
Real Estate Acquisitions in 2024 | Multi-Tenant, Council Bluffs, Iowa
REAL ESTATE INVESTMENTS
Market Cap Rate	0.066
Real Estate Acquisitions in 2024 | Multi-Tenant, Council Bluffs, Iowa | Intangible, Lease Assets
REAL ESTATE INVESTMENTS
Discount Rate	0.0741
Real Estate Acquisitions in 2023 | Multi-tenant, Blythewood, South Carolina
REAL ESTATE INVESTMENTS
Market Cap Rate		0.0675
Real Estate Acquisitions in 2023 | Multi-tenant, Blythewood, South Carolina | Intangible, Lease Assets
REAL ESTATE INVESTMENTS
Discount Rate		0.0675
Real Estate Acquisitions in 2023 | Multi-tenant, Blythewood, South Carolina | Intangible, Mortgage Assets
REAL ESTATE INVESTMENTS
Discount Rate		0.06

X

- Definition

The discount rate used to measure tangible assets acquired.

+ References

No definition available.

+ Details

Name:	olp_AssetAcquisitionsMeasurementInputDiscountRate
Namespace Prefix:	olp_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The market capitalization rate used to measure tangible assets acquired.

+ References

No definition available.

+ Details

Name:	olp_AssetAcquisitionsMeasurementInputMarketCapitalizationRate
Namespace Prefix:	olp_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 15
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480123/805-50-15-3

+ Details

Name:	us-gaap_AssetAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_AssetAcquisitionAxis=olp_RealEstateAcquisitionsIn2024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=olp_QualityCustomDistributionServicesInc.InAlbuquerqueNewMexicoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=olp_LeaseIntangiblesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=olp_RussellEquipmentInc.InSavannahGeorgiaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=olp_MultiTenantedIndustrialPropertyCouncilBluffsIowaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AssetAcquisitionAxis=olp_RealEstateAcquisitionsIn2023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=olp_RealEstateInBlythewoodSouthCarolinaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=olp_MortgageIntangiblesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: