OEC


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GrossProfit

us-gaap:ResearchAndDevelopmentExpense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestExpense
us-gaap:ConsolidationItems

us-gaap:InterestPaidNet
us-gaap:ConsolidationItems
us-gaap:OtherNonoperatingIncomeExpense

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:ConsolidationItems
us-gaap:IncomeStatementLocation
us-gaap:PlanName
us-gaap:ConsolidationItems
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:NonoperatingIncomeExpense
us-gaap:ConsolidationItems
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidationItems
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:IncomeTaxesPaidNet

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:Assets

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:AssetsNoncurrent

us-gaap:Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:DebtCurrent

us-gaap:LongTermDebtCurrent

us-gaap:AccountsPayableCurrent

us-gaap:TaxesPayableCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:LiabilitiesNoncurrent
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:DeferredFinanceCostsNoncurrentNet

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:ShareBasedCompensation

us-gaap:AmortizationOfFinancingCosts
us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividends

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

oec:ActuarialGainLossRecognizedInEarnings

oec:AdjustedEarningsBeforeInterestTaxDepreciationandAmortization
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

oec:CashInflowsRelatedToCurrentFinancialLiabilitiesFinancingActivities

oec:CashOutflowsRelatedToCurrentFinancialLiabilitiesFinancingActivities

oec:CorporateCharges
us-gaap:ConsolidationItems
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:VariableRate
oec:DebtInstrumentFloorOfVariableRateBasis

oec:DepreciationAmortizationAndAssetImpairment
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

oec:EffectiveIncomeTaxRateReconciliationNetDiscreteTaxExpenseAmount
us-gaap:ConsolidationItems
oec:EnvironmentalProtectionAgencyRelatedExpense
us-gaap:ConsolidationItems
oec:ExtraordinaryExpenseItemsRelatedToCOVID19

oec:IncreaseDecreaseInProvisions

oec:InventoryReservePeriodChange

oec:NumberOfFacilitiesOwned
us-gaap:StatementGeographical
us-gaap:RelatedPartyTransactionsByRelatedParty
oec:NumberOfRelatedParties

oec:OperatingLeaseLiabilityPeriodIncreaseDecreaseCurrent

oec:OperatingLeaseLiabilityPeriodIncreaseDecreaseNoncurrent

oec:ReclassificationFromAOCICurrentPeriodForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:StatementEquityComponents

oec:RestructuringSettlementAndImpairmentProvisionsNet
us-gaap:AwardType, us-gaap:PlanName
oec:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod
us-gaap:AwardType
oec:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceBasedAdjustment
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType
oec:ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsSettledInPeriod
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType, us-gaap:PlanName
oec:SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsCorrelation
us-gaap:AwardType, us-gaap:PlanName
oec:SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateOEC
us-gaap:AwardType, us-gaap:PlanName
oec:SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRatePeerGroup

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:StatementBusinessSegments
us-gaap:ConcentrationRiskPercentage1
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:VariableRate
us-gaap:DebtInstrumentBasisSpreadOnVariableRate1
us-gaap:CreditFacility, us-gaap:VariableRate
us-gaap:StatementScenario, us-gaap:CreditFacility, us-gaap:VariableRate

us-gaap:DeferredIncomeTaxesAndTaxCredits

us-gaap:DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DividendsCommonStock
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance

us-gaap:IncreaseDecreaseInAccountsPayableTrade

us-gaap:IncreaseDecreaseInAccruedTaxesPayable

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InventoryWriteDown

us-gaap:LeaseCost

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent

us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTaxParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherNoncashIncomeExpense

us-gaap:PaymentsForRestructuring
us-gaap:RestructuringCostAndReserve

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireProductiveAssets
us-gaap:ConsolidationItems
us-gaap:ProfessionalFees

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodTax
us-gaap:StatementEquityComponents
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty

us-gaap:RestructuringReserveTranslationAdjustment
us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringSettlementAndImpairmentProvisions
us-gaap:ConsolidationItems
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RevenueFromRelatedParties
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType, us-gaap:Vesting
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesNewIssues
us-gaap:CreditFacility
oec:DebtInstrumentCovenantLeverageRatio
us-gaap:Range, us-gaap:CreditFacility
us-gaap:CounterpartyName
oec:GuaranteeObligationsCarryingAmount
us-gaap:StatementGeographical
oec:LesseeOperatingLeaseLeaseNotYetCommencedUndiscountedAmount
us-gaap:CreditFacility, us-gaap:DebtInstrument
oec:LongTermDebtGrossCurrent
us-gaap:CreditFacility, us-gaap:DebtInstrument
oec:LongtermDebtExcludingCurrentMaturitiesGross
us-gaap:CounterpartyName
oec:NumberOfGuaranteesIssuedByCounterparty

oec:OtherFinancialAssetsCurrent

oec:OtherFinancialAssetsNoncurrent

oec:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
us-gaap:AwardType
oec:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedToVestNumber
us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName
us-gaap:AwardType, us-gaap:PlanName

us-gaap:AccountsReceivableGrossCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
us-gaap:CreditFacility, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DebtInstrumentFairValue
us-gaap:CreditFacility
us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet

us-gaap:DebtLongtermAndShorttermCombinedAmount
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:DeferredFinanceCostsCurrentNet
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxAssetsNet
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeAssets
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeAssetsCurrent
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeAssetsNoncurrent
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeLiabilities
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeLiabilitiesCurrent
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeLiabilitiesNoncurrent
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:DueFromRelatedParties
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:DueToRelatedPartiesCurrentAndNoncurrent

us-gaap:EquityMethodInvestments

us-gaap:IncomeTaxesReceivable

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryValuationReserves

us-gaap:InventoryWorkInProcessNetOfReserves
us-gaap:CounterpartyName, us-gaap:CreditFacility
us-gaap:LineOfCredit
us-gaap:CreditFacility
us-gaap:CounterpartyName, us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:RestrictedCash

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding

us-gaap:ShortTermBorrowings
us-gaap:StatementGeographical, us-gaap:CreditFacility

us-gaap:TreasuryStockShares

Tables

  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:CommonStockValue ██▁85.32385.32385.032NANANA84.254NANANA
us-gaap:CommonStockSharesIssued ██▁60.99225960.99225960.729289NANANA60.035579NANANA
us-gaap:CommonStockSharesAuthorized ▄▄▄65.03557965.03557965.035579NANANA89.452626NANANA
us-gaap:CommonStockSharesOutstanding ██▁60.48711760.48711760.224147NANANA59.518498NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█61.26361.391NANA61.12561.113NANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁60.48760.276NANA59.98459.518NANANANA
us-gaap:EarningsPerShareBasic ▁▅▅▅▅▅▄▅█▅-0.30.30.320.40.410.320.270.430.890.45
us-gaap:EarningsPerShareDiluted ▁▄▅▅▅▅▄▅█▅-0.290.290.310.390.40.320.250.430.870.44
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▁▆▅▇█▇▇█▇█202.648336.007322.428370.195399.016384.714385.964393.954391.586406.699
us-gaap:CostOfGoodsAndServicesSold ▁█168.704245.815NANA294.978286.745NANANANA
us-gaap:GrossProfit ▁▆▆▇▇▇▆███33.94490.19388.98798.714104.03897.96995.639109.156112.773112.403
us-gaap:ResearchAndDevelopmentExpense ▁█4.4494.956NANA4.9145.129NANANANA
us-gaap:SellingGeneralAndAdministrativeExpense ▁█38.54744.519NANA52.11755.577NANANANA
us-gaap:OperatingIncomeLoss ▁▅▄▅▅▄▄▅█▅-12.87937.54332.59638.38641.4734.69926.67241.84382.45745.333
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems us-gaap:CorporateNonSegment▁█-6.089-2.323NANA-4.501-5.636NANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,oec:Rubber▁█-13.64520.342NANA26.12721.263NANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,oec:Specialties▁█6.85519.524NANA19.84419.072NANANANA
us-gaap:InterestExpense ▁█8.2779.61NANA7.5666.443NANANANA
us-gaap:InterestPaidNet █▁5.1614.345NANA3.1426.024NANANANA
us-gaap:AllocatedShareBasedCompensationExpense █▁1.199-1.139NANA1.5593.553NANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▁▅▅▅▅▅▄▅█▅-23.8125.53425.53331.88633.90428.25621.37935.65373.6836.951
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome█▁2.6542.398NANA0.00.0NANANANA
us-gaap:NonoperatingIncomeExpense ▁█-2.654-2.398NANA0.00.0NANANANA
 us-gaap:NonoperatingIncomeExpense us-gaap:ConsolidationItems us-gaap:CorporateNonSegment▁█-2.654-2.398NANANANANANANANA
 us-gaap:NonoperatingIncomeExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossNA2.4NANANA0.0NANANANA
us-gaap:IncomeTaxExpenseBenefit ▁█-5.8797.635NANA9.3099.439NANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems us-gaap:CorporateNonSegment▁█-5.8797.635NANA9.3099.439NANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome█▁0.9040.776NANA0.00.0NANANANA
us-gaap:IncomeTaxesPaidNet 2.26NANANA9.116NANANANANA
us-gaap:NetIncomeLoss ▁▅▅▅▅▅▄▅█▅-17.7818.03218.96524.25324.74818.95415.65825.81753.08126.754
 us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome█▁1.751.623NANA0.00.0NANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁█-17.7818.032NANA24.74818.954NANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▁█-17.195-4.811NANA15.49318.245NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,oec:Rubber▁█108.261216.228NANA259.731253.128NANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,oec:Specialties▁█94.388119.779NANA139.285131.586NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:Assets ▁█▁1253.261323.8451257.394NANANA1273.022NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▁█▁1253.261323.8451257.394NANANA1273.022NANANA
us-gaap:StockholdersEquity ▁▄█150.819166.815186.013NA167.325168.79158.896NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:AssetsCurrent ▁█▃479.914569.688507.718NANANA575.319NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue █▅▁143.374107.5463.726NA53.15960.92157.016NANANA
us-gaap:AccountsReceivableNetCurrent ▁█▆145.305234.532212.565NANANA262.821NANANA
us-gaap:InventoryNet ▁█▇135.31168.481164.799NANANA183.629NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▅▁█34.78232.07237.358NANANA34.938NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:AssetsNoncurrent █▂▁773.346754.157749.676NANANA697.703NANANA
us-gaap:Goodwill ▇▁█77.09375.42777.341NANANA55.546NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▁▃█47.08148.12450.596NANANA95.245NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▆█▁28.94329.71827.532NANA30.0NANANANA
us-gaap:OtherAssetsNoncurrent ▁▅█3.0863.4343.701NANANA2.928NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:LiabilitiesCurrent ▃█▁315.108373.659285.211NANANA320.336NANANA
us-gaap:DebtCurrent ▇█▁136.969144.85436.41NANANA41.02NANANA
us-gaap:LongTermDebtCurrent ▇█▁136.969144.85436.41NANANA41.02NANANA
us-gaap:AccountsPayableCurrent ▁▇█90.134145.342156.298NANANA163.585NANANA
us-gaap:TaxesPayableCurrent █▆▁15.33914.92714.154NANANA28.086NANANA
us-gaap:AccruedLiabilitiesCurrent ▃▁█36.12231.93944.931NANANA56.297NANANA
us-gaap:OtherLiabilitiesCurrent ██▁35.63935.71232.509NANANA30.493NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:LiabilitiesNoncurrent █▁▆787.333783.371786.171NANANA793.79NANANA
 us-gaap:LongTermDebt us-gaap:CreditFacility,us-gaap:DebtInstrument oec:TermLoan,oec:TermLoanEUR▆▁█358.4351.7361.8NANANANANANANA
 us-gaap:LongTermDebt us-gaap:CreditFacility,us-gaap:DebtInstrument oec:TermLoan,oec:TermLoanUSD▁▄█279.5280.4281.3NANANANANANANA
us-gaap:LongTermDebtNoncurrent ▅▁█625.799619.879630.261NANANA643.748NANANA
 us-gaap:DeferredFinanceCostsNoncurrentNet us-gaap:CreditFacility,us-gaap:DebtInstrument oec:TermLoan,oec:TermLoanFacility▁▄█4.0284.2854.733NANANA6.266NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▅█▁48.77254.05643.308NANANA45.504NANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▆▁█71.1869.47271.901NANANA60.377NANANA
us-gaap:OtherLiabilitiesNoncurrent █▁▄41.58339.96340.701NANANA44.161NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:StockholdersEquity ▁▄█150.819166.815186.013NA167.325168.79158.896NANANA
us-gaap:CommonStockValue ██▁85.32385.32385.032NANANA84.254NANANA
us-gaap:AdditionalPaidInCapital ▄▁█64.12862.9365.562NANANA63.544NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▁█▆66.50484.28378.296NANANA39.409NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▁█-56.621-57.206-34.362NANANA-19.628NANANA
us-gaap:TreasuryStockValue ▄▄▄8.5158.5158.515NANANA8.683NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues NA0.291NANA0.821NANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:CommonStockNA0.291NANA0.778NANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▁1.199-2.632NANA-5.7373.553NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▁85.7094.905NANA47.95826.171NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities █▁-38.55-50.851NANA-38.37-22.487NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁█-12.83694.56NANA-17.1710.337NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▁85.7094.905NANA47.95826.171NANANANA
us-gaap:NetIncomeLoss ▁▅▅▅▅▅▄▅█▅-17.7818.03218.96524.25324.74818.95415.65825.81753.08126.754
 us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome█▁1.751.623NANA0.00.0NANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁█-17.7818.032NANA24.74818.954NANANANA
us-gaap:DepreciationDepletionAndAmortization ▁█21.87623.845NANA25.40424.095NANANANA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▁█-4.5760.711NANA5.2760.134NANANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▁█-90.56831.097NANA6.5512.623NANANANA
us-gaap:IncreaseDecreaseInInventories ▁█-36.88311.681NANA0.847-7.946NANANANA
us-gaap:ShareBasedCompensation █▁1.199-1.139NANA1.5593.553NANANANA
us-gaap:AmortizationOfFinancingCosts ▁█0.50.501NANA0.5550.535NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities █▁-38.55-50.851NANA-38.37-22.487NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁█-12.83694.56NANA-17.1710.337NANANANA
us-gaap:RepaymentsOfLongTermDebt █▁2.0152.006NANA2.0292.018NANANANA
us-gaap:PaymentsOfDividends ▁█0.012.045NANA12.04211.904NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value85858584
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets6.86.46.86.6

None

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value60606060
Percentage of CommonStockSharesIssued100.0100.0100.0100.0

None

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value65656589
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0

None

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value60606059
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value6060606059595959
Percentage of CommonStockSharesOutstanding100.0100.0100.00.00.0100.00.00.0

None

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value61616161
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value60605959
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0

None

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.30.30.320.40.410.320.270.430.890.45
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.290.290.310.390.40.320.250.430.870.44
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value202336322370399384385393391406
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, oec:Rubber


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value108216259253
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.464.465.165.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.464.465.165.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments oec:Rubber100.0100.0100.0100.0

us-gaap:OperatingSegments, oec:Specialties


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value94119139131
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.635.634.934.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.635.634.934.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments oec:Specialties100.0100.0100.0100.0

None

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value168245294286
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax83.273.273.974.5

None

us-gaap:GrossProfit

us-gaap:GrossProfit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value339088981049795109112112
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.826.827.626.726.125.524.827.728.827.6

None

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value4.4494.9564.9145.129
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.21.51.21.3

None

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value38445255
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.013.213.114.4

None

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-12.879373238413426418245
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.411.210.110.410.49.06.910.621.111.1

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-6.089-2.323-4.501-5.636
Percentage of OperatingIncomeLoss47.3-6.2-10.9-16.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.0-0.7-1.1-1.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.0

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, oec:Rubber


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-13.645202621
Percentage of OperatingIncomeLoss105.954.263.061.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.76.16.55.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments oec:Rubber-12.69.410.18.4

us-gaap:OperatingSegments, oec:Specialties


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value6.855191919
Percentage of OperatingIncomeLoss-53.252.047.955.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.45.85.05.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments oec:Specialties7.316.314.214.5

None

us-gaap:InterestExpense

us-gaap:InterestExpense


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value8.2779.617.5666.443
Percentage of InterestExpense100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.12.91.91.7

us-gaap:InterestExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value8.2779.617.5666.443
Percentage of InterestExpense100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.12.91.91.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.0

None

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value5.1614.3453.1426.024
Percentage of InterestPaidNet100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.51.30.81.6

None

us-gaap:OtherNonoperatingIncomeExpense us-gaap:ConsolidationItems

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-1188000.0-873000.0-629000.0-360000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6-0.3-0.2-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.0

None

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1.199-1.1391.5593.553
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.6-0.30.40.9

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1.199-1.1391.5593.553
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.6-0.30.40.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.0620.029-0.0010.012
Percentage of AllocatedShareBasedCompensationExpense5.2-2.5-0.10.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CostOfSales0.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.916-0.911.3872.598
Percentage of AllocatedShareBasedCompensationExpense76.479.989.073.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.5-0.30.30.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.078-0.0870.0520.206
Percentage of AllocatedShareBasedCompensationExpense6.57.63.35.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.00.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ResearchAndDevelopmentExpense0.00.00.00.0

us-gaap:SellingAndMarketingExpense


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.142-0.1720.1220.737
Percentage of AllocatedShareBasedCompensationExpense11.815.17.820.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1-0.10.00.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingAndMarketingExpense0.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:PlanName

oec:A2018PanIncentive


None
Period End2020-06-302019-06-30
Value0.00.488
Percentage of AllocatedShareBasedCompensationExpense0.031.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oec:A2018PanIncentive0.00.0

oec:A2018PlanPaymentTransaction


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.763-1.2420.9011.275
Percentage of AllocatedShareBasedCompensationExpense63.6109.057.835.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.4-0.40.20.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oec:A2018PlanPaymentTransaction0.00.00.00.0

oec:A2019Plan


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.302-0.030.00.0
Percentage of AllocatedShareBasedCompensationExpense25.22.60.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1-0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oec:A2019Plan0.00.00.00.0

oec:A2019PlanCEOIncentive


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.1340.1340.2640.0
Percentage of AllocatedShareBasedCompensationExpense11.2-11.816.90.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oec:A2019PlanCEOIncentive0.00.00.00.0

oec:TwoThousandSeventeenPlan


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.00.0-0.0941.195
Percentage of AllocatedShareBasedCompensationExpense0.0-0.0-6.033.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.00.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oec:TwoThousandSeventeenPlan0.00.00.00.0

oec:TwoThousandSixteenPlan


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.00.00.01.083
Percentage of AllocatedShareBasedCompensationExpense0.0-0.00.030.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax oec:TwoThousandSixteenPlan0.00.00.00.0

None

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-6.089-2.323-4.501-5.636
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.0-0.7-1.1-1.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.0

None

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-23.81252531332821357336
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-11.77.67.98.68.57.35.59.118.89.1

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value2.6542.3980.00.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-11.19.40.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.30.70.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.0

None

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-2654000.0-2398000.000
Percentage of NonoperatingIncomeExpense100.0100.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.3-0.70.00.0

us-gaap:NonoperatingIncomeExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-31
Value-2654000.0-2398000.0
Percentage of NonoperatingIncomeExpense100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.3-0.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.0

us-gaap:NonoperatingIncomeExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss


None
Period End2020-03-312019-03-31
Value2400000.00
Percentage of NonoperatingIncomeExpense-100.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss0.00.0

None

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-5.8797.6359.3099.439
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.92.32.32.5

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-5.8797.6359.3099.439
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.92.32.32.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.9040.7760.00.0
Percentage of IncomeTaxExpenseBenefit-15.410.20.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.20.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.0

None

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


None
Period End2020-06-302019-06-30
Value2.269.116
Percentage of IncomeTaxesPaidNet100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.12.3

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-17.78181824241815255326
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.85.45.96.66.24.94.16.613.66.6

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1.751.6230.00.0
Percentage of NetIncomeLoss-9.89.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.50.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-17.78182418
Percentage of NetIncomeLoss100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.85.46.24.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.0

None

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-17.195-4.8111518
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.5-1.43.94.7

None

us-gaap:Assets

us-gaap:Assets


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-31
Value12531323125712731164
Percentage of Assets100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0

None

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value1253132312571273
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value1501661861671681589554
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.012.614.80.00.012.58.20.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-7.747-9.342-11.189-2.814-2.778-2.831-2.965-7.064
Percentage of StockholdersEquity-5.1-5.6-6.0-1.7-1.6-1.8-3.1-12.9
Percentage of Assets-0.6-0.7-0.90.00.0-0.2-0.30.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-13.152-11.511-10.891-12.747-8.372-6.147-1.801-15.262
Percentage of StockholdersEquity-8.7-6.9-5.9-7.6-5.0-3.9-1.9-27.9
Percentage of Assets-1.0-0.9-0.90.00.0-0.5-0.20.0
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-56.621-57.206-34.362-29.592-20.337-19.628-5.32-17.948
Percentage of StockholdersEquity-37.5-34.3-18.5-17.7-12.0-12.4-5.6-32.8
Percentage of Assets-4.5-4.3-2.70.00.0-1.5-0.50.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-35.722-36.353-12.281-14.031-9.187-10.65-0.5544.378
Percentage of StockholdersEquity-23.7-21.8-6.6-8.4-5.4-6.7-0.68.0
Percentage of Assets-2.9-2.7-1.00.00.0-0.8-0.00.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value646265616763102139
Percentage of StockholdersEquity42.537.735.236.739.840.0107.6254.9
Percentage of Assets5.14.85.20.00.05.08.80.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value8585858584848383
Percentage of StockholdersEquity56.651.145.750.849.953.087.9153.2
Percentage of Assets6.86.46.80.00.06.67.20.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value668478594639-81.901-146.761
Percentage of StockholdersEquity44.150.542.135.427.524.8-85.9-268.4
Percentage of Assets5.36.46.20.00.03.1-7.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-8.515-8.515-8.515-8.683-8.683-8.683-3.773-3.773
Percentage of StockholdersEquity-5.6-5.1-4.6-5.2-5.1-5.5-4.0-6.9
Percentage of Assets-0.7-0.6-0.70.00.0-0.7-0.30.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.0

None

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value479569507575
Percentage of AssetsCurrent100.0100.0100.0100.0
Percentage of Assets38.343.040.445.2

None

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-31
Value1431076353605772
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.48.15.10.00.04.56.2

None

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value145234212262
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0
Percentage of Assets11.617.716.920.6

None

us-gaap:InventoryNet

us-gaap:InventoryNet


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value135168164183
Percentage of InventoryNet100.0100.0100.0100.0
Percentage of Assets10.812.713.114.4

None

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value34323734
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0
Percentage of Assets2.82.43.02.7

None

us-gaap:AssetsNoncurrent

us-gaap:AssetsNoncurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value773754749697
Percentage of AssetsNoncurrent100.0100.0100.0100.0
Percentage of Assets61.757.059.654.8

None

us-gaap:Goodwill

us-gaap:Goodwill


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-31
Value7775775558
Percentage of Goodwill100.0100.0100.0100.0100.0
Percentage of Assets6.25.76.24.45.0

None

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value47485095
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0
Percentage of Assets3.83.64.07.5

None

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


None
Period End2020-06-302020-03-312019-12-312019-03-312019-01-01
Value2829273030
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0
Percentage of Assets2.32.22.20.00.0

None

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value3086000.03434000.03701000.02928000.0
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0
Percentage of Assets0.20.30.30.2

None

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value315373285320
Percentage of LiabilitiesCurrent100.0100.0100.0100.0
Percentage of Assets25.128.222.725.2

None

us-gaap:DebtCurrent

us-gaap:DebtCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value1361443641
Percentage of DebtCurrent100.0100.0100.0100.0
Percentage of Assets10.910.92.93.2

None

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value1361443641
Percentage of LongTermDebtCurrent100.0100.0100.0100.0
Percentage of Assets10.910.92.93.2

None

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value90145156163
Percentage of AccountsPayableCurrent100.0100.0100.0100.0
Percentage of Assets7.211.012.412.9

None

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value15141428
Percentage of TaxesPayableCurrent100.0100.0100.0100.0
Percentage of Assets1.21.11.12.2

None

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value36314456
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0
Percentage of Assets2.92.43.64.4

None

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value35353230
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0
Percentage of Assets2.82.72.62.4

None

us-gaap:LiabilitiesNoncurrent

us-gaap:LiabilitiesNoncurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value787783786793
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0
Percentage of Assets62.859.262.562.4

None

us-gaap:LongTermDebt us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:LongTermDebt

oec:TermLoan, oec:TermLoanEUR


None
Period End2020-06-302020-03-312019-12-31
Value358351361
Percentage of LongTermDebt100.0100.0100.0
Percentage of Assets28.626.628.8
Percentage of Assets oec:TermLoan oec:TermLoanEUR0.00.00.0

oec:TermLoan, oec:TermLoanUSD


None
Period End2020-06-302020-03-312019-12-31
Value279280281
Percentage of LongTermDebt78.079.777.8
Percentage of Assets22.321.222.4
Percentage of Assets oec:TermLoan oec:TermLoanUSD0.00.00.0

None

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value625619630643
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0
Percentage of Assets49.946.850.150.6

None

us-gaap:DeferredFinanceCostsNoncurrentNet us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:DeferredFinanceCostsNoncurrentNet

oec:TermLoan, oec:TermLoanFacility


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value4028000.04285000.04733000.06266000.0
Percentage of DeferredFinanceCostsNoncurrentNet100.0100.0100.0100.0
Percentage of Assets0.30.30.40.5
Percentage of Assets oec:TermLoan oec:TermLoanFacility0.00.00.00.0

None

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value48544345
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0
Percentage of Assets3.94.13.43.6

None

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value71697160
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0
Percentage of Assets5.75.25.74.7

None

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value41394044
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0
Percentage of Assets3.33.03.23.5

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value1501661861671681589554
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.012.614.80.00.012.58.20.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-7.747-9.342-11.189-2.814-2.778-2.831-2.965-7.064
Percentage of StockholdersEquity-5.1-5.6-6.0-1.7-1.6-1.8-3.1-12.9
Percentage of Assets-0.6-0.7-0.90.00.0-0.2-0.30.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-13.152-11.511-10.891-12.747-8.372-6.147-1.801-15.262
Percentage of StockholdersEquity-8.7-6.9-5.9-7.6-5.0-3.9-1.9-27.9
Percentage of Assets-1.0-0.9-0.90.00.0-0.5-0.20.0
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-56.621-57.206-34.362-29.592-20.337-19.628-5.32-17.948
Percentage of StockholdersEquity-37.5-34.3-18.5-17.7-12.0-12.4-5.6-32.8
Percentage of Assets-4.5-4.3-2.70.00.0-1.5-0.50.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-35.722-36.353-12.281-14.031-9.187-10.65-0.5544.378
Percentage of StockholdersEquity-23.7-21.8-6.6-8.4-5.4-6.7-0.68.0
Percentage of Assets-2.9-2.7-1.00.00.0-0.8-0.00.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value646265616763102139
Percentage of StockholdersEquity42.537.735.236.739.840.0107.6254.9
Percentage of Assets5.14.85.20.00.05.08.80.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value8585858584848383
Percentage of StockholdersEquity56.651.145.750.849.953.087.9153.2
Percentage of Assets6.86.46.80.00.06.67.20.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value668478594639-81.901-146.761
Percentage of StockholdersEquity44.150.542.135.427.524.8-85.9-268.4
Percentage of Assets5.36.46.20.00.03.1-7.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value-8.515-8.515-8.515-8.683-8.683-8.683-3.773-3.773
Percentage of StockholdersEquity-5.6-5.1-4.6-5.2-5.1-5.5-4.0-6.9
Percentage of Assets-0.7-0.6-0.70.00.0-0.7-0.30.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.0

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value85858584
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets6.86.46.86.6

None

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value64626563
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0
Percentage of Assets5.14.85.25.0

None

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value66847839
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0
Percentage of Assets5.36.46.23.1

None

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value-56621000.0-57206000.0-34362000.0-19628000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0
Percentage of Assets-4.5-4.3-2.7-1.5

None

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value8515000.08515000.08515000.08683000.0
Percentage of TreasuryStockValue100.0100.0100.0100.0
Percentage of Assets0.70.60.70.7

None

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


None
Period End2020-03-312019-06-30
Value291000.0821000.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0
Percentage of Assets0.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:CommonStock


None
Period End2020-03-312019-06-30
Value291000.0778000.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.094.8
Percentage of Assets0.00.0
Percentage of Assets us-gaap:CommonStock0.00.0

None

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1199000.0-2632000.0-5737000.03553000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1199000.0-2632000.0-5737000.03553000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.0

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value854.9054726
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.31.512.06.8

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-38550000.0-50851000.0-38370000.0-22487000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-19.0-15.1-9.6-5.8

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-12.83694-17.1710.337
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.328.1-4.30.1

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value854.9054726
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.31.512.06.8

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-17.78181824241815255326
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.85.45.96.66.24.94.16.613.66.6

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1.751.6230.00.0
Percentage of NetIncomeLoss-9.89.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.50.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-17.78182418
Percentage of NetIncomeLoss100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.85.46.24.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.0

None

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value21232524
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0

None

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-4.5760.7115.2760.134
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0

None

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-90.568316.5512
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0

None

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-36.883110.847-7.946
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0

None

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1.199-1.1391.5593.553
Percentage of ShareBasedCompensation100.0100.0100.0100.0

None

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfFinancingCosts


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value500000.0501000.0555000.0535000.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0

us-gaap:AmortizationOfFinancingCosts us-gaap:CreditFacility, us-gaap:DebtInstrument

oec:TermLoan, oec:TermLoanFacility


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value300000.0300000.0400000.0300000.0
Percentage of AmortizationOfFinancingCosts60.059.972.156.1

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-38550000.0-50851000.0-38370000.0-22487000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-19.0-15.1-9.6-5.8

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-12.83694-17.1710.337
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.328.1-4.30.1

None

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value2.0152.0062.0292.018
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0

None

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.0121211
Percentage of PaymentsOfDividends0.0100.0100.0100.0

None

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.28910.29190.2960.301
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0

None

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312016-12-31
Value146110685765617580
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0

oec:ActuarialGainLossRecognizedInEarnings

oec:ActuarialGainLossRecognizedInEarnings


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-2654000.0-2398000.000
Percentage of ActuarialGainLossRecognizedInEarnings100.0100.00.00.0

oec:AdjustedEarningsBeforeInterestTaxDepreciationandAmortization

oec:AdjustedEarningsBeforeInterestTaxDepreciationandAmortization


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value15637164
Percentage of AdjustedEarningsBeforeInterestTaxDepreciationandAmortization100.0100.0100.0100.0

oec:AdjustedEarningsBeforeInterestTaxDepreciationandAmortization us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, oec:Rubber


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-1.233354035
Percentage of AdjustedEarningsBeforeInterestTaxDepreciationandAmortization-8.156.056.654.5

us-gaap:OperatingSegments, oec:Specialties


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value16283129
Percentage of AdjustedEarningsBeforeInterestTaxDepreciationandAmortization108.144.043.445.5

oec:CashInflowsRelatedToCurrentFinancialLiabilitiesFinancingActivities

oec:CashInflowsRelatedToCurrentFinancialLiabilitiesFinancingActivities


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value411094137
Percentage of CashInflowsRelatedToCurrentFinancialLiabilitiesFinancingActivities100.0100.0100.0100.0

oec:CashOutflowsRelatedToCurrentFinancialLiabilitiesFinancingActivities

oec:CashOutflowsRelatedToCurrentFinancialLiabilitiesFinancingActivities


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value520.03622
Percentage of CashOutflowsRelatedToCurrentFinancialLiabilitiesFinancingActivities100.00.0100.0100.0

oec:CorporateCharges

oec:CorporateCharges


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value6.0892.3234.5015.636
Percentage of CorporateCharges100.0100.0100.0100.0

oec:CorporateCharges us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value6.0892.3234.5015.636
Percentage of CorporateCharges100.0100.0100.0100.0

oec:DebtInstrumentFloorOfVariableRateBasis us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:VariableRate

oec:DebtInstrumentFloorOfVariableRateBasis

oec:TermLoan, oec:TermLoanEUR, oec:EuroInterbankOfferedRateEURIBOR


None
Period End2020-06-302020-03-312014-07-25
Value000.01
Percentage of DebtInstrumentFloorOfVariableRateBasis0.00.0100.0

oec:TermLoan, oec:TermLoanUSD, us-gaap:LondonInterbankOfferedRateLIBOR


None
Period End2020-06-302020-03-312014-07-25
Value000.01
Percentage of DebtInstrumentFloorOfVariableRateBasis0.00.0100.0

oec:DepreciationAmortizationAndAssetImpairment

oec:DepreciationAmortizationAndAssetImpairment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value21232524
Percentage of DepreciationAmortizationAndAssetImpairment100.0100.0100.0100.0

oec:DepreciationAmortizationAndAssetImpairment us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, oec:Rubber


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value12151413
Percentage of DepreciationAmortizationAndAssetImpairment56.064.155.957.1

us-gaap:OperatingSegments, oec:Specialties


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value9.6168.5521110
Percentage of DepreciationAmortizationAndAssetImpairment44.035.944.142.9

oec:EffectiveIncomeTaxRateReconciliationNetDiscreteTaxExpenseAmount

oec:EffectiveIncomeTaxRateReconciliationNetDiscreteTaxExpenseAmount


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1200000.0-700000.0700000.0900000.0
Percentage of EffectiveIncomeTaxRateReconciliationNetDiscreteTaxExpenseAmount100.0100.0100.0100.0

oec:EnvironmentalProtectionAgencyRelatedExpense us-gaap:ConsolidationItems

oec:EnvironmentalProtectionAgencyRelatedExpense

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value977000.02589000.0690000.0718000.0
Percentage of EnvironmentalProtectionAgencyRelatedExpense100.0100.0100.0100.0

oec:ExtraordinaryExpenseItemsRelatedToCOVID19 us-gaap:ConsolidationItems

oec:ExtraordinaryExpenseItemsRelatedToCOVID19

us-gaap:CorporateNonSegment


None
Period End2020-06-302019-06-30
Value2725000.00
Percentage of ExtraordinaryExpenseItemsRelatedToCOVID19100.00.0

oec:IncreaseDecreaseInProvisions

oec:IncreaseDecreaseInProvisions


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-3.83311-5.99520
Percentage of IncreaseDecreaseInProvisions100.0100.0100.0100.0

oec:InventoryReservePeriodChange

oec:InventoryReservePeriodChange


None
Period End2020-03-312019-03-31
Value2900000.00
Percentage of InventoryReservePeriodChange100.00.0

oec:NumberOfFacilitiesOwned

oec:NumberOfFacilitiesOwned


None
Period End2020-06-302020-03-31
Value013.0
Percentage of NumberOfFacilitiesOwned0.0100.0

oec:NumberOfFacilitiesOwned us-gaap:StatementGeographical

country:US


None
Period End2020-06-302020-03-31
Value04.0
Percentage of NumberOfFacilitiesOwned0.030.8

oec:NumberOfRelatedParties us-gaap:RelatedPartyTransactionsByRelatedParty

oec:NumberOfRelatedParties

us-gaap:EquityMethodInvestee


None
Period End2020-06-302020-03-31
Value01.0
Percentage of NumberOfRelatedParties0.0100.0

us-gaap:PrincipalOwner


None
Period End2020-06-302020-03-31
Value01.0
Percentage of NumberOfRelatedParties0.0100.0

oec:OperatingLeaseLiabilityPeriodIncreaseDecreaseCurrent

oec:OperatingLeaseLiabilityPeriodIncreaseDecreaseCurrent


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-1441000.02982000.01782000.05144000.0
Percentage of OperatingLeaseLiabilityPeriodIncreaseDecreaseCurrent100.0100.0100.0100.0

oec:OperatingLeaseLiabilityPeriodIncreaseDecreaseNoncurrent

oec:OperatingLeaseLiabilityPeriodIncreaseDecreaseNoncurrent


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.4461.242-1.63225
Percentage of OperatingLeaseLiabilityPeriodIncreaseDecreaseNoncurrent100.0100.0100.0100.0

oec:ReclassificationFromAOCICurrentPeriodForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

oec:ReclassificationFromAOCICurrentPeriodForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-280000.0420000.0-190000.0133000.0
Percentage of ReclassificationFromAOCICurrentPeriodForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0

oec:ReclassificationFromAOCICurrentPeriodForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-155000.0225000.0-36000.053000.0
Percentage of ReclassificationFromAOCICurrentPeriodForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax55.453.618.939.8

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-125000.0195000.0-154000.080000.0
Percentage of ReclassificationFromAOCICurrentPeriodForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax44.646.481.160.2

oec:RestructuringSettlementAndImpairmentProvisionsNet

oec:RestructuringSettlementAndImpairmentProvisionsNet


None
Period End2020-03-312019-03-31
Value0100000.0
Percentage of RestructuringSettlementAndImpairmentProvisionsNet0.0100.0

oec:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod us-gaap:AwardType, us-gaap:PlanName

oec:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod

us-gaap:PerformanceShares, oec:TwoThousandSeventeenPlan


None
Period End2020-03-31
Value378160.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod100.0

oec:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceBasedAdjustment us-gaap:AwardType

oec:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceBasedAdjustment

us-gaap:PerformanceShares


None
Period End2020-06-302020-03-31
Value0-40087.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceBasedAdjustment0.0100.0

oec:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceBasedAdjustment us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, oec:TwoThousandSeventeenPlan


None
Period End2020-06-302020-03-31
Value040087.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceBasedAdjustment0.0-100.0

oec:ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsSettledInPeriod us-gaap:AwardType

oec:ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsSettledInPeriod

us-gaap:PerformanceShares


None
Period End2020-06-302020-03-31
Value0378160.0
Percentage of ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsSettledInPeriod0.0100.0

oec:ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsSettledInPeriod us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, oec:TwoThousandSeventeenPlan


None
Period End2020-06-302020-03-31
Value0378160.0
Percentage of ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsSettledInPeriod0.0100.0

oec:SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsCorrelation us-gaap:AwardType, us-gaap:PlanName

oec:SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsCorrelation

us-gaap:PerformanceShares, oec:TwoThousandEighteenPlan


None
Period End2020-06-302020-03-31
Value00.3659
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsCorrelation0.0100.0

us-gaap:PerformanceShares, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-31
Value00.5205
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsCorrelation0.0142.3

us-gaap:PerformanceShares, oec:TwoThousandSeventeenPlan


None
Period End2020-06-302020-03-31
Value00.4574
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsCorrelation0.0125.0

oec:SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateOEC us-gaap:AwardType, us-gaap:PlanName

oec:SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateOEC

us-gaap:PerformanceShares, oec:TwoThousandEighteenPlan


None
Period End2020-06-302020-03-31
Value00.3022
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateOEC0.0100.0

us-gaap:PerformanceShares, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-31
Value00.333
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateOEC0.0110.2

us-gaap:PerformanceShares, oec:TwoThousandSeventeenPlan


None
Period End2020-06-302020-03-31
Value00.3377
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateOEC0.0111.7

oec:SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRatePeerGroup us-gaap:AwardType, us-gaap:PlanName

oec:SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRatePeerGroup

us-gaap:PerformanceShares, oec:TwoThousandEighteenPlan


None
Period End2020-06-302020-03-31
Value00.2009
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRatePeerGroup0.0100.0

us-gaap:PerformanceShares, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-31
Value00.1762
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRatePeerGroup0.087.7

us-gaap:PerformanceShares, oec:TwoThousandSeventeenPlan


None
Period End2020-06-302020-03-31
Value00.173
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedVolatilityRatePeerGroup0.086.1

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value3448-7.5834.021
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value00.20.20.2
Percentage of CommonStockDividendsPerShareDeclared0.0100.0100.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:StatementBusinessSegments

us-gaap:ConcentrationRiskPercentage1

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, oec:Rubber


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.530.640.650.66
Percentage of ConcentrationRiskPercentage1100.0100.0100.0100.0

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, oec:Specialties


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.470.360.350.34
Percentage of ConcentrationRiskPercentage188.756.253.851.5

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:VariableRate

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

oec:TermLoan, oec:TermLoanEUR, oec:EuroInterbankOfferedRateEURIBOR


None
Period End2020-03-31
Value0.0225
Percentage of DebtInstrumentBasisSpreadOnVariableRate1100.0

oec:TermLoan, oec:TermLoanUSD, us-gaap:LondonInterbankOfferedRateLIBOR


None
Period End2020-03-31
Value0.02
Percentage of DebtInstrumentBasisSpreadOnVariableRate188.9

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:CreditFacility, us-gaap:VariableRate

us-gaap:RevolvingCreditFacility, us-gaap:Eurodollar


None
Period End2020-06-302020-03-312019-04-022019-04-01
Value0.02150.02150.000190.025
Percentage of DebtInstrumentBasisSpreadOnVariableRate10.095.60.00.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:StatementScenario, us-gaap:CreditFacility, us-gaap:VariableRate

srt:ScenarioForecast, us-gaap:RevolvingCreditFacility, us-gaap:Eurodollar


None
Period End2020-09-30
Value2.4
Percentage of DebtInstrumentBasisSpreadOnVariableRate10.0

us-gaap:DeferredIncomeTaxesAndTaxCredits

us-gaap:DeferredIncomeTaxesAndTaxCredits


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-4.634-1.8650.839-2.913
Percentage of DeferredIncomeTaxesAndTaxCredits100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit

us-gaap:DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit


None
Period End2020-03-312019-03-31
Value-2398000.00
Percentage of DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit100.00.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses


None
Period End2020-06-302019-06-30
Value-2654000.00
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.00.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss


None
Period End2020-06-302019-06-30
Value-2654000.00
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.00.0

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanInterestCost


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value282000.0295000.0425000.0432000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value3203000.02996000.0843000.0743000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DefinedBenefitPlanServiceCost


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value267000.0303000.0418000.0311000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0

us-gaap:DividendsCommonStock

us-gaap:DividendsCommonStock


None
Period End2020-03-312019-06-302019-03-31
Value121211
Percentage of DividendsCommonStock100.0100.0100.0

us-gaap:DividendsCommonStock us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-03-312019-06-302019-03-31
Value121211
Percentage of DividendsCommonStock100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1570000.0-6630000.0-146000.0-200000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.24850.29750.2730.334
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.988-1.2190.645-0.935
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value151000.0133000.0153000.0137000.0
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, oec:Rubber


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value151000.0133000.0153000.0137000.0
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance


None
Period End2020-06-30
Value200000.0
Percentage of IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance100.0

us-gaap:IncreaseDecreaseInAccountsPayableTrade

us-gaap:IncreaseDecreaseInAccountsPayableTrade


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-50.1334.3912.9963.868
Percentage of IncreaseDecreaseInAccountsPayableTrade100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedTaxesPayable

us-gaap:IncreaseDecreaseInAccruedTaxesPayable


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-3.39212-4.0841.748
Percentage of IncreaseDecreaseInAccruedTaxesPayable100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value776000.01115000.01141000.01595000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0

us-gaap:InventoryWriteDown

us-gaap:InventoryWriteDown


None
Period End2020-03-312019-03-31
Value3400000.0100000.0
Percentage of InventoryWriteDown100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


None
Period End2020-06-302019-06-30
Value2400000.02700000.0
Percentage of LeaseCost100.0100.0

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-1.424-23.976-10.905-2.235
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-2.224-1.241-5.951-3.767
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent156.25.254.6168.5

us-gaap:AccumulatedTranslationAdjustment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.8-22.735-4.9541.532
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent-56.294.845.4-68.5

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value2100000.02200000.02600000.02700000.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-1595000.0-1847000.036000.0-53000.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value631000.0-24071000.0-4844000.01463000.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-539000.0910000.0-1840000.0-1393000.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-708000.0-426000.0-1730000.0-1462000.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax131.4-46.894.0105.0

us-gaap:AccumulatedTranslationAdjustment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value169000.01336000.0-110000.069000.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax-31.4146.86.0-5.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-1609000.0-656000.0-4375000.0-2225000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTaxParent

us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTaxParent


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-31000.036000.000
Percentage of OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTaxParent100.0100.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.585-22.844-9.255-0.709
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.585-22.844-9.255-0.709
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostAndExpenseOperating


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value3.8263.1754.5032.475
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-548000.0-360000.0-3264000.0-1028000.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsForRestructuring


None
Period End2020-06-302020-03-31
Value0.7081.432
Percentage of PaymentsForRestructuring100.0100.0

us-gaap:PaymentsForRestructuring us-gaap:RestructuringCostAndReserve

oec:GroundRemediationCostsRelatedToRestructuring


None
Period End2020-06-302020-03-31
Value0.1480.252
Percentage of PaymentsForRestructuring20.917.6

us-gaap:EmployeeSeverance


None
Period End2020-06-302020-03-31
Value0.4860.514
Percentage of PaymentsForRestructuring68.635.9

us-gaap:FacilityClosing


None
Period End2020-06-302020-03-31
Value0.0740.402
Percentage of PaymentsForRestructuring10.528.1

us-gaap:OtherRestructuring


None
Period End2020-06-302020-03-31
Value0.00.263
Percentage of PaymentsForRestructuring0.018.4

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDebtIssuanceCosts


None
Period End2020-06-302019-06-30
Value01721000.0
Percentage of PaymentsOfDebtIssuanceCosts0.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value01202000.06475000.00
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation0.0100.0100.00.0

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value38503822
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0

us-gaap:ProfessionalFees us-gaap:ConsolidationItems

us-gaap:ProfessionalFees

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value00589000.0916000.0
Percentage of ProfessionalFees0.00.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent


None
Period End2020-06-302020-03-312019-03-31
Value-2654000.0-2398000.00
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.00.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-03-31
Value-2654000.0-2398000.00
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.00.0

us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:ReclassificationFromAociCurrentPeriodTax


None
Period End2020-06-302020-03-312019-03-31
Value-904000.0-776000.00
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.00.0

us-gaap:ReclassificationFromAociCurrentPeriodTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-03-31
Value-904000.0-776000.00
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.00.0

us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RelatedPartyTransactionPurchasesFromRelatedParty

srt:AffiliatedEntity


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value10212322
Percentage of RelatedPartyTransactionPurchasesFromRelatedParty100.0100.0100.0100.0

us-gaap:RestructuringReserveTranslationAdjustment

us-gaap:RestructuringReserveTranslationAdjustment


None
Period End2020-06-302020-03-31
Value-59000.0113000.0
Percentage of RestructuringReserveTranslationAdjustment100.0100.0

us-gaap:RestructuringReserveTranslationAdjustment us-gaap:RestructuringCostAndReserve

oec:GroundRemediationCostsRelatedToRestructuring


None
Period End2020-06-302020-03-31
Value-2000.014000.0
Percentage of RestructuringReserveTranslationAdjustment3.412.4

us-gaap:EmployeeSeverance


None
Period End2020-06-302020-03-31
Value-53000.081000.0
Percentage of RestructuringReserveTranslationAdjustment89.871.7

us-gaap:FacilityClosing


None
Period End2020-06-302020-03-31
Value-2000.011000.0
Percentage of RestructuringReserveTranslationAdjustment3.49.7

us-gaap:OtherRestructuring


None
Period End2020-06-302020-03-31
Value-1000.06000.0
Percentage of RestructuringReserveTranslationAdjustment1.75.3

us-gaap:RestructuringSettlementAndImpairmentProvisions

us-gaap:RestructuringSettlementAndImpairmentProvisions


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.00.01.0340.089
Percentage of RestructuringSettlementAndImpairmentProvisions0.00.0100.0100.0

us-gaap:RestructuringSettlementAndImpairmentProvisions us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.00.01.0340.089
Percentage of RestructuringSettlementAndImpairmentProvisions0.00.0100.0100.0

us-gaap:RevenueFromRelatedParties us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RevenueFromRelatedParties

srt:AffiliatedEntity


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value654000.0634000.0829000.0663000.0
Percentage of RevenueFromRelatedParties100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

us-gaap:PerformanceShares


None
Period End2020-06-302020-03-31
Value2603.04844.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-06-302020-03-31
Value1508.01895.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod57.939.1

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName

us-gaap:RestrictedStockUnitsRSU, oec:ShareBasedPaymentArrangementEmployeeExistingEmployees, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-31
Value1508.01895.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod57.939.1

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, oec:TwoThousandEighteenPlan


None
Period End2020-06-302020-03-31
Value1095.02949.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod42.160.9

us-gaap:PerformanceShares, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-31
Value1508.01895.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod57.939.1

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate

us-gaap:PerformanceShares, oec:TwoThousandEighteenPlan


None
Period End2020-06-302020-03-31
Value00.0194
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate0.0100.0

us-gaap:PerformanceShares, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-31
Value00.0465
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate0.0239.7

us-gaap:PerformanceShares, oec:TwoThousandSeventeenPlan


None
Period End2020-06-302020-03-31
Value00.0188
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate0.096.9

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:PerformanceShares, oec:TwoThousandEighteenPlan


None
Period End2020-06-302020-03-31
Value00.0146
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.0100.0

us-gaap:PerformanceShares, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-31
Value00.0183
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.0125.3

us-gaap:PerformanceShares, oec:TwoThousandSeventeenPlan


None
Period End2020-06-302020-03-31
Value00.0145
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.099.3

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU, oec:ShareBasedPaymentArrangementEmployeeExistingEmployees, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-31
Value014.74
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0100.0

us-gaap:RestrictedStockUnitsRSU, oec:ShareBasedPaymentArrangementEmployeeNewHireSignOn, oec:TwoThousandEighteenPlan


None
Period End2020-06-302020-03-31
Value025.81
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0175.1

us-gaap:RestrictedStockUnitsRSU, oec:ShareBasedPaymentArrangementEmployeeNewHireSignOn, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-31
Value015.89
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0107.8

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, oec:TwoThousandEighteenPlan


None
Period End2020-06-302020-03-31
Value039.24
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0266.2

us-gaap:PerformanceShares, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-31
Value011.48
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.077.9

us-gaap:PerformanceShares, oec:TwoThousandSeventeenPlan


None
Period End2020-06-302020-03-31
Value024.89
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0168.9

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:AwardType, us-gaap:Vesting

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:RestrictedStockUnitsRSU, us-gaap:ShareBasedCompensationAwardTrancheOne


None
Period End2020-06-302020-03-31
Value00.3333
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.0

us-gaap:RestrictedStockUnitsRSU, us-gaap:ShareBasedCompensationAwardTrancheThree


None
Period End2020-06-302020-03-31
Value00.3333
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.0

us-gaap:RestrictedStockUnitsRSU, us-gaap:ShareBasedCompensationAwardTrancheTwo


None
Period End2020-06-302020-03-31
Value00.3333
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.0

us-gaap:StockIssuedDuringPeriodSharesNewIssues us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:CommonStock


None
Period End2020-03-312019-06-30
Value262970.0693710.0
Percentage of StockIssuedDuringPeriodSharesNewIssues100.0100.0

oec:DebtInstrumentCovenantLeverageRatio us-gaap:CreditFacility

oec:DebtInstrumentCovenantLeverageRatio

us-gaap:RevolvingCreditFacility


None
Period End2020-06-302019-04-01
Value2.752.3
Percentage of DebtInstrumentCovenantLeverageRatio100.0100.0

oec:DebtInstrumentCovenantLeverageRatio us-gaap:Range, us-gaap:CreditFacility

srt:Maximum, us-gaap:RevolvingCreditFacility


None
Period End2020-06-302020-03-312019-04-02
Value2.752.752.25
Percentage of DebtInstrumentCovenantLeverageRatio100.00.00.0

srt:Minimum, us-gaap:RevolvingCreditFacility


None
Period End2020-06-302020-03-312019-04-02
Value2.252.251.75
Percentage of DebtInstrumentCovenantLeverageRatio81.80.00.0

oec:GuaranteeObligationsCarryingAmount us-gaap:CounterpartyName

oec:GuaranteeObligationsCarryingAmount

oec:DeutscheBankAG


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value2.22.22.22.9
Percentage of GuaranteeObligationsCarryingAmount100.0100.0100.0100.0

oec:EulerHermesS.A.


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value9.69.49.215
Percentage of GuaranteeObligationsCarryingAmount436.4427.3418.2524.1

oec:LibertyMutualInsurance


None
Period End2020-06-30
Value3.1
Percentage of GuaranteeObligationsCarryingAmount140.9

oec:UnicreditAG


None
Period End2020-06-30
Value0.3
Percentage of GuaranteeObligationsCarryingAmount13.6

oec:LesseeOperatingLeaseLeaseNotYetCommencedUndiscountedAmount us-gaap:StatementGeographical

oec:LesseeOperatingLeaseLeaseNotYetCommencedUndiscountedAmount

oec:CologneGermany


None
Period End2020-05-312016-10-31
Value6.035
Percentage of LesseeOperatingLeaseLeaseNotYetCommencedUndiscountedAmount100.0100.0

oec:LongTermDebtGrossCurrent us-gaap:CreditFacility, us-gaap:DebtInstrument

oec:LongTermDebtGrossCurrent

oec:TermLoan, oec:TermLoanFacility


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value8048000.07952000.08057000.08149000.0
Percentage of LongTermDebtGrossCurrent100.0100.0100.0100.0

oec:LongtermDebtExcludingCurrentMaturitiesGross us-gaap:CreditFacility, us-gaap:DebtInstrument

oec:LongtermDebtExcludingCurrentMaturitiesGross

oec:TermLoan, oec:TermLoanFacility


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value629624634650
Percentage of LongtermDebtExcludingCurrentMaturitiesGross100.0100.0100.0100.0

oec:NumberOfGuaranteesIssuedByCounterparty us-gaap:CounterpartyName

oec:NumberOfGuaranteesIssuedByCounterparty

oec:EulerHermesS.A.


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value5.05.03.04.0
Percentage of NumberOfGuaranteesIssuedByCounterparty100.0100.0100.0100.0

oec:LibertyMutualInsurance


None
Period End2020-06-30
Value1.0
Percentage of NumberOfGuaranteesIssuedByCounterparty20.0

oec:UnicreditAG


None
Period End2020-06-30
Value4.0
Percentage of NumberOfGuaranteesIssuedByCounterparty80.0

oec:OtherFinancialAssetsCurrent

oec:OtherFinancialAssetsCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value9.434191112
Percentage of OtherFinancialAssetsCurrent100.0100.0100.0100.0

oec:OtherFinancialAssetsNoncurrent

oec:OtherFinancialAssetsNoncurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value715000.0692000.02501000.02723000.0
Percentage of OtherFinancialAssetsNoncurrent100.0100.0100.0100.0

oec:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

oec:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization


None
Period End2020-03-312019-12-31
Value535534
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization100.0100.0

oec:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedToVestNumber us-gaap:AwardType

oec:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedToVestNumber

us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-31
Value279960.0515350.0917260.01556000.01433400.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedToVestNumber100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-31
Value194180.0195690.0197580.035817.00
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedToVestNumber69.438.021.52.30.0

oec:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedToVestNumber us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName

us-gaap:RestrictedStockUnitsRSU, oec:ShareBasedPaymentArrangementEmployeeExistingEmployees, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-312019-12-31
Value125040.0126550.0128450.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedToVestNumber44.724.614.0

oec:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedToVestNumber us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, oec:TwoThousandEighteenPlan


None
Period End2020-06-302020-03-312019-12-31
Value171900.0299420.0299420.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedToVestNumber61.458.132.6

us-gaap:PerformanceShares, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-312019-12-31
Value108060.0215930.0215930.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedToVestNumber38.641.923.5

us-gaap:PerformanceShares, oec:TwoThousandSeventeenPlan


None
Period End2020-06-302020-03-312019-12-31
Value00401900.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpectedToVestNumber0.00.043.8

us-gaap:AccountsReceivableGrossCurrent

us-gaap:AccountsReceivableGrossCurrent


None
Period End2020-06-302019-12-31
Value151219
Percentage of AccountsReceivableGrossCurrent100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


None
Period End2020-06-302020-03-312019-12-312019-06-302018-12-31
Value6379000.07454000.06632000.05594000.05081000.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentFairValue us-gaap:CreditFacility, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DebtInstrumentFairValue

oec:CreditFacilityTermLoan, us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value637632643658
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0

oec:LocalBankLoan, us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value1301382928
Percentage of DebtInstrumentFairValue20.421.94.64.3

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet us-gaap:CreditFacility

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet

us-gaap:RevolvingCreditFacility


None
Period End2020-06-302020-03-312019-12-312018-12-312017-05-052014-07-25
Value3100000.03200000.03400000.02400000.02300000.03300000.0
Percentage of DebtIssuanceCostsLineOfCreditArrangementsNet100.0100.0100.0100.0100.0100.0

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DebtLongtermAndShorttermCombinedAmount


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value762764666684
Percentage of DebtLongtermAndShorttermCombinedAmount100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsCurrentNet us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:DeferredFinanceCostsCurrentNet

oec:TermLoan, oec:TermLoanFacility


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value1387000.01366000.01409000.01472000.0
Percentage of DeferredFinanceCostsCurrentNet100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsNet us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:DeferredFinanceCostsNet

oec:TermLoan, oec:TermLoanFacility


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value5400000.05700000.06100000.07700000.0
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value54564852
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0

us-gaap:DerivativeAssets us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeAssets

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value6.43168.4369.949
Percentage of DerivativeAssets100.0100.0100.0100.0

us-gaap:DerivativeAssetsCurrent us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeAssetsCurrent

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value6.428168.4349.777
Percentage of DerivativeAssetsCurrent100.0100.0100.0100.0

us-gaap:DerivativeAssetsNoncurrent us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeAssetsNoncurrent

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value2000.06000.01000.0172000.0
Percentage of DerivativeAssetsNoncurrent100.0100.0100.0100.0

us-gaap:DerivativeLiabilities us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeLiabilities

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value108.7239.4257.032
Percentage of DerivativeLiabilities100.0100.0100.0100.0

us-gaap:DerivativeLiabilitiesCurrent us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeLiabilitiesCurrent

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value342000.049000.0109000.02302000.0
Percentage of DerivativeLiabilitiesCurrent100.0100.0100.0100.0

us-gaap:DerivativeLiabilitiesNoncurrent us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeLiabilitiesNoncurrent

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value108.6759.3164.73
Percentage of DerivativeLiabilitiesNoncurrent100.0100.0100.0100.0

us-gaap:DueFromRelatedParties us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DueFromRelatedParties

srt:AffiliatedEntity


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value25000.0773000.0537000.0651000.0
Percentage of DueFromRelatedParties100.0100.0100.0100.0

us-gaap:DueToRelatedPartiesCurrentAndNoncurrent us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DueToRelatedPartiesCurrentAndNoncurrent

srt:AffiliatedEntity


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value9.412131718
Percentage of DueToRelatedPartiesCurrentAndNoncurrent100.0100.0100.0100.0

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value4944000.05235000.05232000.05332000.0
Percentage of EquityMethodInvestments100.0100.0100.0100.0

us-gaap:IncomeTaxesReceivable

us-gaap:IncomeTaxesReceivable


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value117.8191724
Percentage of IncomeTaxesReceivable100.0100.0100.0100.0

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryFinishedGoodsNetOfReserves


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value729195108
Percentage of InventoryFinishedGoodsNetOfReserves100.0100.0100.0100.0

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value62766973
Percentage of InventoryRawMaterialsNetOfReserves100.0100.0100.0100.0

us-gaap:InventoryValuationReserves

us-gaap:InventoryValuationReserves


None
Period End2020-03-312019-12-312019-03-312018-12-31
Value10000000.06700000.06700000.01600000.0
Percentage of InventoryValuationReserves100.0100.0100.0100.0

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value115000.035000.0148000.01246000.0
Percentage of InventoryWorkInProcessNetOfReserves100.0100.0100.0100.0

us-gaap:LineOfCredit us-gaap:CounterpartyName, us-gaap:CreditFacility

us-gaap:LineOfCredit

oec:DeutscheBankAG, us-gaap:RevolvingCreditFacility


None
Period End2020-03-312019-12-31
Value6726
Percentage of LineOfCredit100.0100.0

oec:Unicredit, us-gaap:RevolvingCreditFacility


None
Period End2020-03-31
Value27
Percentage of LineOfCredit40.5

us-gaap:LineOfCredit us-gaap:CreditFacility

oec:AncillaryFacilities


None
Period End2020-06-302019-12-31
Value4428
Percentage of LineOfCredit0.0108.3

us-gaap:RevolvingCreditFacility


None
Period End2020-06-302020-03-31
Value4443
Percentage of LineOfCredit0.065.2

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CounterpartyName, us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

oec:RCFBankGroup, oec:AncillaryFacilities


None
Period End2020-06-30
Value170
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

oec:RCFBankGroup, oec:June2020AncillaryFacilities


None
Period End2020-06-30
Value40
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity23.5

oec:RCFBankGroup, us-gaap:RevolvingCreditFacility


None
Period End2020-06-30
Value250
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity147.1

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value905000.0886000.0908000.0855000.0
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization


None
Period End2020-06-302019-12-31
Value556534
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization100.0100.0

us-gaap:RestrictedCash

us-gaap:RestrictedCash


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-31
Value2734000.02675000.04505000.04537000.04504000.04588000.02929000.0
Percentage of RestrictedCash100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringReserve

us-gaap:RestructuringReserve


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-312016-12-31
Value2.5723.2214.7658.6588.71716
Percentage of RestructuringReserve100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringReserve us-gaap:RestructuringCostAndReserve

oec:GroundRemediationCostsRelatedToRestructuring


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-312016-12-31
Value0.0750.2210.4882.9394.3173.795
Percentage of RestructuringReserve2.96.910.233.949.522.8

us-gaap:EmployeeSeverance


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-312016-12-31
Value2.3732.8053.42.3340.6466.453
Percentage of RestructuringReserve92.387.171.427.07.438.7

us-gaap:FacilityClosing


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-312016-12-31
Value0.0750.1470.5612.5412.8244.88
Percentage of RestructuringReserve2.94.611.829.332.429.3

us-gaap:OtherRestructuring


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-312016-12-31
Value0.0490.0480.3170.8440.931.547
Percentage of RestructuringReserve1.91.56.79.710.79.3

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue

us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value10.597.4619.321.4118.9925.2830.8527.125.6
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value10.597.4619.321.4118.9925.2830.8527.125.6
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-312016-12-31
Value578050.0580650.01003700.01595000.01610900.01145200.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-312016-12-31
Value194180.0195690.0197580.035817.000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber33.633.719.72.20.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName

us-gaap:RestrictedStockUnitsRSU, oec:ShareBasedPaymentArrangementEmployeeExistingEmployees, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value125040.0126550.0128450.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber21.621.812.80.0

us-gaap:RestrictedStockUnitsRSU, oec:ShareBasedPaymentArrangementEmployeeNewHireSignOn, oec:TwoThousandEighteenPlan


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value23878.023878.023878.035817.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber4.14.12.42.2

us-gaap:RestrictedStockUnitsRSU, oec:ShareBasedPaymentArrangementEmployeeNewHireSignOn, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value45257.045257.045257.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber7.87.84.50.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, oec:TwoThousandEighteenPlan


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value351720.0352820.0355770.0450030.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber60.860.835.428.2

us-gaap:PerformanceShares, oec:TwoThousandNineteenPlan


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value226320.0227830.0229730.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber39.239.222.90.0

us-gaap:PerformanceShares, oec:TwoThousandSeventeenPlan


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value00418250.0467350.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber0.00.041.729.3

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding

us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-31
Value8.25.82318314141
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-31
Value8.25.82318314141
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermBorrowings

us-gaap:ShortTermBorrowings


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value1301382934
Percentage of ShortTermBorrowings100.0100.0100.0100.0

us-gaap:ShortTermBorrowings us-gaap:StatementGeographical, us-gaap:CreditFacility

country:BR, us-gaap:LineOfCredit


None
Period End2020-06-302019-12-31
Value1.10.0
Percentage of ShortTermBorrowings0.80.0

country:KR, us-gaap:LineOfCredit


None
Period End2020-06-302019-12-31
Value390.0
Percentage of ShortTermBorrowings30.30.0

us-gaap:TreasuryStockShares

us-gaap:TreasuryStockShares


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value505140.0505140.0505140.0517080.0
Percentage of TreasuryStockShares100.0100.0100.0100.0

Line plots across dimensions of each concept


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
None
us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
None
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:PlanName
(None,)
None
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation
(None,)
None
Operating Margin
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
None
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:LongTermDebt
us-gaap:CreditFacility, us-gaap:DebtInstrument
('oec:TermLoan', None)
None
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
None