XML 75 R65.htm IDEA: XBRL DOCUMENT v3.22.2.2

OTHER INCOME - Litigation Settlement (Details) - USD ($)		9 Months Ended
	Apr. 15, 2022	Sep. 30, 2022
OTHER INCOME
Income on settlement of litigation		$ 5,388,000
Round Rock Guaranty Litigation
OTHER INCOME
Income on settlement of litigation	$ 5,388,000

X

- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

+ Details

Name:	us-gaap_GainLossRelatedToLitigationSettlement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

No definition available.

+ Details

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

X

- Details

Name:	srt_LitigationCaseAxis=olp_RoundRockGuarantyLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: