XML 66 R54.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Fair Value Measurements - Derivative Instruments, Gain (Loss) (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2018 USD ($) item | Jun. 30, 2017 USD ($) item | Jun. 30, 2018 USD ($) item | Jun. 30, 2017 USD ($) | Dec. 31, 2017 USD ($)
Reclassification of gain (loss) |  |  |  |  |
Amount of reclassification from Accumulated other comprehensive income into Interest expense or Equity as a result of forecasted transaction being no longer probable of occurring |  |  |  | $ (118,000) |
Amount of reclassification from Accumulated other comprehensive income to earnings | $ 110,000 |  | $ 110,000 |  |
Interest rate swap | Cash flow hedges |  |  |  |  |
Fair Value Measurements |  |  |  |  |
Amount of gain (loss) recognized on derivatives in Other comprehensive income | 1,009,000 | $ (1,055,000) | 3,509,000 | (986,000) |
Amount of reclassification from Accumulated other comprehensive income into Interest expense | (95,000) | (545,000) | (291,000) | (1,054,000) |
Reclassification of gain (loss) |  |  |  |  |
Amount of reclassification from Accumulated other comprehensive income to earnings | 110,000 | 118,000 |  |  |
Amount of effectiveness testing on cash flow hedges | 0 | 0 | 0 | 0 |
Additional amount to be reclassified during the next twelve months |  |  | 222,000 |  |
Credit risk related contingent feature |  |  |  |  |
Accrued interest on derivative in a liability position | 9,000 |  | 9,000 |  | $ 53,000
Fair value of derivative in a liability position, including accrued interest but excluding adjustments for nonperformance risk | 126,000 |  | 126,000 |  | 1,638,000
Termination value of derivative agreement | $ 126,000 |  | $ 126,000 |  | 1,638,000
Interest rate swap | Cash flow hedges | Unconsolidated joint ventures |  |  |  |  |
Fair Value Measurements |  |  |  |  |
Number of unconsolidated joint ventures of the entity with interest rate derivatives outstanding | item |  |  | 1 |  |
Percentage of ownership in unconsolidated joint venture | 50.00% |  | 50.00% |  |
Number interest rate derivatives outstanding | item | 1 |  | 1 |  |
Amount of gain (loss) recognized on derivatives in Other comprehensive income | $ 22,000 | (21,000) | $ 69,000 | (12,000) |
Amount of reclassification from Accumulated other comprehensive income into Equity in earnings of unconsolidated joint ventures | $ 110,000 | $ (16,000) | 103,000 | $ (35,000) |
Reclassification of gain (loss) |  |  |  |  |
Number of interest rate swaps | item | 2 | 2 |  |  |
Interest rate swap | Cash flow hedges | Accrued expenses and other liabilities |  |  |  |  |
Credit risk related contingent feature |  |  |  |  |
Adjustments for nonperformance risk |  |  | 8,000 |  | $ 93,000
3.49% Interest rate swaps | Cash flow hedges | Unconsolidated joint ventures |  |  |  |  |
Fair Value Measurements |  |  |  |  |
Notional Amount | $ 6,983,000 |  | $ 6,983,000 |  |
Fixed Interest Rate (as a percent) | 3.49% |  | 3.49% |  |
5.81% Interest rate swaps | Cash flow hedges | Unconsolidated joint ventures |  |  |  |  |
Fair Value Measurements |  |  |  |  |
Notional Amount | $ 3,402,000 |  | $ 3,402,000 |  |
Fixed Interest Rate (as a percent) | 5.81% |  | 5.81% |  |

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the accrued interest portion of the derivative instrument. + References No definition available. + Details
Name: | olp_AccruedInterestOnDerivativeInLiabilityPosition
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into equity in earnings of unconsolidated joint ventures on derivative instruments designated and qualifying as hedging instruments. + References No definition available. + Details
Name: | olp_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOciIntoEquityEarningsEffectivePortionNet
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The concept that refers to derivative instruments gain loss reclassified from accumulated other comprehensive income into interest expense as a result of forecasted transaction being no longer probable of occurring. + References No definition available. + Details
Name: | olp_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOtherComprehensiveIncomeIntoInterestExpenseAsResultOfForecastedTransactionBeingNoLongerProbableOfOccurring
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the amount of adjustments for nonperformance risk included in termination liability. + References No definition available. + Details
Name: | olp_FairValueAdjustmentsForNonperformanceRiskIncludedInTerminationLiability
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain or loss excluded from effectiveness testing on the cash flow hedges. + References No definition available. + Details
Name: | olp_GainLossFromEffectivenessTestingOnCashFlowHedges
Namespace Prefix: | olp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of interest rate swaps as the forecasted hedged transactions were no longer probable of occurring. + References No definition available. + Details
Name: | olp_NumberOfInterestRateSwapsTerminated
Namespace Prefix: | olp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of unconsolidated joint ventures of the entity had interest rate derivative outstanding at the reporting date. + References No definition available. + Details
Name: | olp_NumberOfUnconsolidatedJointVenturesWithDerivativesOutstanding
Namespace Prefix: | olp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate fair value of assets needed to immediately settle the derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624258-113959 + Details
Name: | us-gaap_AssetsNeededForImmediateSettlementAggregateFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
Name: | us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DerivativeCreditRiskRelatedContingentFeaturesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
Name: | us-gaap_DerivativeGainLossOnDerivativeNet
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_DerivativeInstrumentsGainLossLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
Name: | us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624258-113959 + Details
Name: | us-gaap_DerivativeNetLiabilityPositionAggregateFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of interest rate derivative instruments held by the entity at the reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579245-113959 + Details
Name: | us-gaap_NumberOfInterestRateDerivativesHeld
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph c -URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41638-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ReclassificationOfCashFlowHedgeGainLossAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=olp_AccruedExpensesAndOtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=olp_InterestRateSwap3.49PercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=olp_InterestRateSwap5.81PercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |