XML 75 R60.htm IDEA: XBRL DOCUMENT v3.25.0.1

REAL ESTATE INVESTMENTS - Acquisitions Subsequent to December 31, 2024 (Details) - Real Estate Acquisitions in 2025	Feb. 06, 2025 USD ($) tenant	Jan. 16, 2025 USD ($) property tenant
Two Industrial Properties, Theodore, Alabama
REAL ESTATE INVESTMENTS
Number of properties acquired | property		2
Number of tenants with leases | tenant		4
Contracted price		$ 49,000,000
Mortgage amount to be assumed		$ 29,000,000
Interest rate		6.12%
Industrial Property, Wichita, Kansas
REAL ESTATE INVESTMENTS
Number of tenants with leases | tenant	1
Contracted price	$ 13,300,000
Mortgage amount to be assumed	$ 7,500,000
Interest rate	6.09%

X

- Definition

Amount of mortgage loans expected to be assumed upon completion of the related asset acquisition.

+ References

No definition available.

+ Details

Name:	olp_AssetAcquisitionExpectedAmountOfMortgageLoansToBeAssumed
Namespace Prefix:	olp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The expected interest rate for mortgages assumed in an asset acquisition transaction.

+ References

No definition available.

+ Details

Name:	olp_AssetAcquisitionsExpectedInterestRate
Namespace Prefix:	olp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of properties acquired.

+ References

No definition available.

+ Details

Name:	olp_NumberOfPropertiesAcquired
Namespace Prefix:	olp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of tenants with leases in the property.

+ References

No definition available.

+ Details

Name:	olp_NumberOfTenantsWithLeases
Namespace Prefix:	olp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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

- Definition

Purchase price of expected asset acquisition prior to consideration being transferred. Excludes business acquisition.

+ 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_AssetAcquisitionPriceOfAcquisitionExpected
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_AssetAcquisitionAxis=olp_RealEstateAcquisitionsIn2025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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