XML 78 R65.htm IDEA: XBRL DOCUMENT
v3.19.1

RELATED PARTY TRANSACTIONS (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2016 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Unconsolidated Joint Ventures |  |  |  |  |
Related Party Transaction |  |  |  |  |
Aggregate fees paid to other partners |  |  | $ 169,000 | $ 175,000 | $ 176,000
Decrease in equity earnings, joint venture transaction |  |  | 85,000 | 88,000 | 88,000
Majestic |  |  |  |  |
Related Party Transaction |  |  |  |  |
Fees under compensation and services agreement |  |  | 2,745,000 | 2,673,000 | 2,504,000
Property management costs allocated to real estate expenses annually |  |  | 1,226,000 | 1,154,000 | 1,057,000
Additional payment for the entity's share of all direct office expenses |  |  | 216,000 | 216,000 | 196,000
Majestic | Net lease tenants |  |  |  |  |
Related Party Transaction |  |  |  |  |
Property management costs (as a percent) | 1.50% |  |  |  |
Majestic | Operating lease tenants |  |  |  |  |
Related Party Transaction |  |  |  |  |
Property management costs (as a percent) | 2.00% |  |  |  |
Executive officers and others |  |  |  |  |
Related Party Transaction |  |  |  |  |
Share based compensation charged to operations |  |  | 1,765,000 | 1,539,000 | 1,480,000
Joint Venture Partners and Affiliates |  |  |  |  |
Related Party Transaction |  |  |  |  |
Real estate property management costs |  |  | 107,000 | 143,000 | 185,000
Chairman | General and administrative expense |  |  |  |  |
Related Party Transaction |  |  |  |  |
Fee paid |  |  | 276,000 | 276,000 | 262,500
Chairman | General and administrative expense | Forecast |  |  |  |  |
Related Party Transaction |  |  |  |  |
Agreed to pay |  | $ 289,000 |  |  |
Vice Chairman | General and administrative expense |  |  |  |  |
Related Party Transaction |  |  |  |  |
Fee paid |  |  | $ 110,000 | $ 110,000 | 105,000
Vice Chairman | General and administrative expense | Forecast |  |  |  |  |
Related Party Transaction |  |  |  |  |
Agreed to pay |  | $ 116,000 |  |  |
Gould Investors L.P. |  |  |  |  |
Related Party Transaction |  |  |  |  |
Number of common stock owned by the related party |  |  | 1,785,976 | 1,785,976 |
Ownership percentage held by the related party |  |  | 9.20% | 9.50% |
Amount of insurance reimbursed |  |  | $ 912,000 | $ 790,000 | 699,000
Gould Investors L.P. | Real estate expenses |  |  |  |  |
Related Party Transaction |  |  |  |  |
Insurance expense recognized of amounts reimbursed to related party |  |  | $ 877,000 | $ 757,000 | $ 645,000

X
- Definition Aggregate fees paid to other partners of the venture. + References No definition available. + Details
Name: | olp_AggregateFeesPaidToOtherPartners
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of shares of common stock owned by related party + References No definition available. + Details
Name: | olp_AmountOfSharesOfCommonStockOwnedByRelatedParty
Namespace Prefix: | olp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Reduction of equity in earnings of unconsolidated joint ventures on the consolidated statement of income. + References No definition available. + Details
Name: | olp_DecreaseInEquityInEarningsJointVentureTransaction
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Insurance expense recognized of amounts reimbursed to related party + References No definition available. + Details
Name: | olp_InsuranceExpenseRecognizedAmountsReimbursedToRelatedParty
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the aggregate costs related to management of properties during the reporting period. + References No definition available. + Details
Name: | olp_RealEstatePropertyManagementCosts
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount of additional payment to related party for the share of direct office expenses. + References No definition available. + Details
Name: | olp_RelatedPartyTransactionAdditionalPaymentForShareOfDirectOfficeExpenses
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount has to pay to related parties under related party transaction. + References No definition available. + Details
Name: | olp_RelatedPartyTransactionAmountAgreedToPayment
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount of reimbursement of property insurance under the related party transactions. + References No definition available. + Details
Name: | olp_RelatedPartyTransactionAmountOfPropertyInsuranceReimbursed
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount paid to related parties under related party transaction. + References No definition available. + Details
Name: | olp_RelatedPartyTransactionAmountPaid
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount to be paid under the agreement with the related party. + References No definition available. + Details
Name: | olp_RelatedPartyTransactionFees
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the percentage of ownership held by the related party. + References No definition available. + Details
Name: | olp_RelatedPartyTransactionOwnershipPercentageHeld
Namespace Prefix: | olp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the amount of property management costs allocated to real estate expenses annually. + References No definition available. + Details
Name: | olp_RelatedPartyTransactionPropertyManagementCostAllocatedToRealEstateExpensesAnnually
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The percentage charged for managing real estate properties. + References No definition available. + Details
Name: | us-gaap_PropertyManagementFeePercentFee
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
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 No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=olp_UnconsolidatedJointVenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=olp_MajesticPropertyManagementCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorPropertyClassAxis=olp_NetLeasePropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorPropertyClassAxis=olp_OperatingLeasePropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=olp_ExecutiveOfficersAndOthersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=olp_JointVenturePartnersAndAffiliatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_BoardOfDirectorsChairmanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=olp_BoardOfDirectorsViceChairmanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=olp_GouldInvestorsLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=olp_RealEstateExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |