XML 50 R38.htm IDEA: XBRL DOCUMENT v3.8.0.1

Sale of Properties (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Sale of Properties
Gross Sales Price	$ 24,750	$ 40,611
Gain on Sales of Real Estate, Net	9,837	9,824
Retail property, Greenwood Village, Colorado
Sale of Properties
Gross Sales Price	9,500
Gain on Sales of Real Estate, Net	6,568
Retail Property Kansas City, Missouri
Sale of Properties
Gross Sales Price	10,250
Gain on Sales of Real Estate, Net	2,180
Retail Property Niles Illinois
Sale of Properties
Gross Sales Price	5,000
Gain on Sales of Real Estate, Net	$ 1,089
Portfolio of eight retail properties, Louisiana and Mississippi
Sale of Properties
Gross Sales Price		13,750
Gain on Sales of Real Estate, Net		787
Retail property, Killeen, Texas
Sale of Properties
Gross Sales Price		3,100
Gain on Sales of Real Estate, Net		980
Land, Sandy Springs, Georgia
Sale of Properties
Gross Sales Price		8,808
Gain on Sales of Real Estate, Net		2,281
Industrial property, Tomlinson, Pennsylvania
Sale of Properties
Gross Sales Price		14,800
Gain on Sales of Real Estate, Net		5,660
Partial condemnation of land, greenwood village, colorado
Sale of Properties
Gross Sales Price		153
Gain on Sales of Real Estate, Net		$ 116

X

- Definition

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

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

X

- Definition

Revenue from the sale of commercial, industrial, or residential property during the period. This element is more likely than not relevant to an entity for which real estate operations are a principal activity. If real estate operations are not a principal activity, the reporting entity would likely use a gain (loss) on sale of property, plant, or equipment type element.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_SalesOfRealEstate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=olp_RetailPropertyGreenwoodVillageColoradoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=olp_RetailPropertyKansasCityMissouriMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=olp_RetailPropertyNilesIllinoisMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=olp_RealEstatePropertyLocatedInLouisianaAndMississippiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=olp_RealEstatePropertyLocatedInKilleenTXMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=olp_RealEstatePropertyLocatedInSandySpringsGMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=olp_RealEstatePropertyLocatedInTomlinsonPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=olp_PartialCondemnationOfLandGreenwoodVillageColoradoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: