PLPC


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementGeographical
us-gaap:StatementGeographical

us-gaap:Revenues

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GrossProfit

us-gaap:CostsAndExpenses

us-gaap:GeneralAndAdministrativeExpense

us-gaap:SellingAndMarketingExpense

us-gaap:OperatingIncomeLoss

us-gaap:InterestExpense

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:AwardType
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:PlanName, us-gaap:Range

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:NonoperatingIncomeExpense

us-gaap:IncomeTaxExpenseBenefit
us-gaap:StatementGeographical

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLoss
us-gaap:StatementGeographical

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:Assets
us-gaap:StatementGeographical

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:InventoryFinishedGoods

us-gaap:InventoryLIFOReserve

us-gaap:OtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:StatementGeographical

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:TaxesPayableCurrent

us-gaap:DividendsPayableCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredTaxLiabilitiesNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:MinorityInterest

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementGeographical

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt
dei:LegalEntity, us-gaap:ShortTermDebtType
us-gaap:ShortTermDebtType, dei:LegalEntity

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock
dei:LegalEntity, us-gaap:ShortTermDebtType
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:ShortTermDebtType, dei:LegalEntity

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
us-gaap:AwardType

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ProceedsFromRepaymentsOfShortTermDebt
us-gaap:AwardType
plpc:DeferredCompensationArrangementWithIndividualCompensationExpenseIncome

plpc:PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementGeographical
us-gaap:StatementGeographical
us-gaap:StatementGeographical, us-gaap:ProductOrService

plpc:ProvisionForRecoveryOfDoubtfulAccounts

plpc:RepurchaseOfCommonStockFromRelatedParty

plpc:ResearchAndEngineeringExpense
us-gaap:StatementEquityComponents
plpc:StockIssuedDuringPeriodSharesSharesHeldInEmployeeTrust
us-gaap:StatementEquityComponents
plpc:StockIssuedDuringPeriodValueSharesHeldInEmployeeTrust

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:StatementScenario
us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:StatementGeographical

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:InventoryLIFOReserveEffectOnIncomeNet
us-gaap:Range

us-gaap:InventoryWriteDown

us-gaap:InvestmentIncomeInterest

us-gaap:LeaseCost

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax
us-gaap:StatementEquityComponents

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:ProceedsFromIssuanceOfCommonStock
dei:LegalEntity
us-gaap:ProceedsFromLongTermLinesOfCredit

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
us-gaap:PlanName, us-gaap:Vesting
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
us-gaap:ValuationAllowancesAndReservesType
us-gaap:StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss
us-gaap:ValuationAllowancesAndReservesType
us-gaap:StandardProductWarrantyAccrualPayments
us-gaap:ValuationAllowancesAndReservesType
us-gaap:StandardProductWarrantyAccrualWarrantiesIssued
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesNewIssues
us-gaap:PlanName
us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:TreasuryStockSharesAcquired
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

plpc:DeferredCompensationLiability

plpc:DeferredCompensationLiabilityFairValue
us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation
us-gaap:FairValueByFairValueHierarchyLevel

plpc:PrepaidExpenseCurrentExcludingTax
us-gaap:RelatedPartyTransactionsByRelatedParty
plpc:StockRepurchasedDuringPeriodPricePerShare

us-gaap:AccountsPayableTradeCurrent

us-gaap:AccruedLiabilitiesAndOtherLiabilities

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CommonStockSharesHeldInEmployeeTrust

us-gaap:CommonStockSharesHeldInEmployeeTrustShares

us-gaap:ContingentConsiderationClassifiedAsEquityFairValueDisclosure
us-gaap:BalanceSheetLocation
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DeferredCompensationLiabilityCurrent

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredTaxAssetsNetNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:InventoryGross

us-gaap:InventoryNoncurrent

us-gaap:InventoryRawMaterials

us-gaap:InventoryWorkInProcess

us-gaap:LIFOInventoryAmount

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LineOfCredit
dei:LegalEntity
dei:LegalEntity
us-gaap:LineOfCreditFacilityInterestRateAtPeriodEnd
us-gaap:StatementGeographical
us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
dei:LegalEntity
us-gaap:LinesOfCreditCurrent

us-gaap:PrepaidTaxes
us-gaap:StatementGeographical
us-gaap:RestrictedCash
us-gaap:StatementGeographical
us-gaap:RestrictedCashNoncurrent

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShortTermBankLoansAndNotesPayable
us-gaap:ValuationAllowancesAndReservesType
us-gaap:StandardProductWarrantyAccrual

us-gaap:TreasuryStockShares

Tables

  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:CommonStockValue ███▇▇▇▇▇▇▇▇▇▇▇▁▁13.00313.00312.84812.82512.82212.82112.66212.64312.63912.63512.59312.51412.51412.51310.72210.666
us-gaap:CommonStockSharesIssued ▁▂▂▂▃▃▂▂▃▃▃▄▄▄██4.9345064.9951144.9929795.0162935.0301815.059385.020415.0121095.0369785.0487585.0382075.0913815.1159815.1180885.3608795.333018
us-gaap:CommonStockSharesOutstanding ▁▂▂▂▃▃▂▂▃▃▃▄▄▄██4.9345064.9951144.9929795.0162935.0301815.059385.020415.0121095.0369785.0487585.0382075.0913815.1159815.1180885.3608795.333018
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█4.9735.017NA5.1195.0585.054NA5.1385.0645.064NA5.125.1275.130.005455.441
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█4.9665.008NA5.0245.0495.045NA5.0255.0445.046NA5.1045.1165.1180.0053685.332
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOption█▁0.0403130.02NA0.0150.0150.0NA0.00.00.012NA0.0270.0484980.033350.00.02575
us-gaap:EarningsPerShareBasic █▃▄▆▆▂▄▇▅▄▁▅▃▂▅▅2.1099999999999997e-067.4e-071.12e-061.5800000000000001e-061.57e-063.6e-071.0500000000000001e-061.8000000000000001e-061.34e-061.1e-061.4e-071.23e-068.100000000000001e-073e-071.19e-061.24e-06
us-gaap:EarningsPerShareDiluted █▃▄▆▆▂▄▇▅▄▁▅▃▂▅▅2.1099999999999997e-067.4e-071.0900000000000002e-061.55e-061.56e-063.6e-071.02e-061.76e-061.33e-061.0900000000000002e-061.4e-071.23e-068.100000000000001e-073e-071.17e-061.21e-06
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇███▇▇▇▇▇▇▇▇▆▁▁117.629102.852113.649119.217114.84297.153105.411108.413108.91598.13996.89299.23997.51284.5696.8110.074
us-gaap:Revenues █▇███▇▇▇▇▇▇▇▇▆▁▁117.629102.852113.649119.217114.84297.153105.411108.413108.91598.13996.89299.23997.51284.5696.8110.074
us-gaap:CostOfGoodsAndServicesSold ▇▃▇█▇▃▅▆▅▁▁▁▂78.06369.94277.46879.87477.03569.88873.39274.92273.71266.62166.13865.70467.839NANANA
us-gaap:GrossProfit █▅▆█▇▂▄▅▆▄▄▅▃▁▇▇39.56632.9136.1839.34337.80727.26532.01933.49135.20331.51830.75533.53529.67324.66537.54936.966
us-gaap:CostsAndExpenses ▄▇█▇▆▄▃▅▅▃▂▃▂▁▆▇24.75927.75728.35827.726.69225.21924.17825.47625.8723.77323.00823.72523.37922.40727.0627.292
us-gaap:GeneralAndAdministrativeExpense ▆███▇▅▄▄▃▂▃▃▂▁▅▅12.43213.43413.3213.27512.89312.31811.53911.65511.28810.91611.01711.04210.77210.32912.12712.149
us-gaap:SellingAndMarketingExpense ▂▄█▇▅▂▅▅▇▄▁▄▃▁▆▇8.4398.9059.7419.419.0468.4139.0618.9659.4718.8618.1818.9578.6268.2849.2919.506
us-gaap:OperatingIncomeLoss █▃▄▆▆▁▄▄▅▄▄▅▃▁▆▅14.8075.1537.82311.64311.1152.0467.8418.0159.3337.7457.7469.816.2942.25810.4899.674
us-gaap:InterestExpense ██▆█▆▄▃▄▄▃▂▃▃▃▁▁0.7190.7090.5290.7350.5850.3680.2980.3640.3480.280.230.2550.2770.2990.1050.149
us-gaap:OtherNonoperatingIncomeExpense ▁█▃▅▄▄▅▄▄▄▄▄▄▄▅▅-0.2820.549-0.0410.1380.0970.0710.1910.0940.1050.0690.070.1220.0810.0550.1620.209
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType plpc:TimeBasedRestrictedStockUnitsRSU▁▁▁█▁▁█▁▁▁▁▁▁▁0.10.10.10.20.10.10.20.10.10.10.10.10.10.1NANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:PlanName,us-gaap:Range plpc:LongTermIncentivePlanStockOption,srt:MaximumNA0.10.90.10.10.10.00.10.10.10.00.10.1NANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▃▄▆▆▁▄▄▅▄▄▆▄▁▆▆13.8855.1047.42311.25710.851.9287.8797.8569.2247.6297.6919.7396.2582.11810.689.913
us-gaap:NonoperatingIncomeExpense ▁▆▄▄▅▆▇▆▆▆▆▆▆▆██-0.922-0.049-0.4-0.386-0.265-0.1180.039-0.159-0.109-0.116-0.055-0.071-0.036-0.140.1910.239
us-gaap:IncomeTaxExpenseBenefit ▅▃▄▅▅▂▄▁▄▄█▅▄▃▆▅3.3971.4511.823.2132.9840.1042.617-1.1982.4892.1016.9893.4612.1020.64.2943.317
us-gaap:ProfitLoss █▃▅▆▆▂▄▇▅▄▁▅10.4883.6535.6028.0447.8661.8245.2639.0546.7355.5280.7026.278NANA6.3866.596
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax █▁█▄▇▇▆▆▂▇▆▇▇█▄▄5.472-16.8815.472-5.8971.11.353-2.187-0.563-13.3673.831-1.1722.962.815.472-8.56-7.159
us-gaap:OtherComprehensiveIncomeLossNetOfTax █▁█▄▇▇▆▆▂▇▆▇▇█▄▄5.563-16.7835.38-5.7891.1931.446-2.344-0.447-13.2753.922-1.5183.012.8935.544-8.484-7.035
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▄▁▂█▁▃▃▃▃0.007-0.045-0.0210.093-0.0380.00.00.00.0NANANANANANA0.0
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest █▁16.051-13.13NA2.2559.0583.27NA8.607-6.549.451NANANANANA-0.439
us-gaap:NetIncomeLoss █▃▅▆▆▂▄▇▅▄▁▅▃▂▅▅10.4813.6985.6247.9517.9041.8245.2649.0546.7355.5280.7026.2784.1561.5186.3866.596
us-gaap:ComprehensiveIncomeNetOfTax █▁▇▅▆▅▅▆▃▆▄▆▆▆▄▄16.044-13.08511.0042.1629.0973.272.9198.607-6.549.45-0.8169.2887.0497.062-2.098-0.439
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▄▁▂█▁▃▃▃▃0.007-0.045-0.0210.093-0.0380.00.00.00.0NANANANANANA0.0
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:Assets █▆█▇▇▅▃▃▃▄▃▃▂▂▁▂436.266413.257433.571425.004425.153387.128358.797363.969364.08375.961359.785362.625351.571350.54335.021342.958
us-gaap:LiabilitiesAndStockholdersEquity █▆█▇▇▅▃▃▃▄▃▃▂▂▁▂436.266413.257433.571425.004425.153387.128358.797363.969364.08375.961359.785362.625351.571350.54335.021342.958
us-gaap:StockholdersEquity ▇▅█▆▆▅▅▄▃▄▃▄▂▁264.161251.512268.535259.663257.852250.203249.37246.405239.529247.021238.537244.652236.597230.133NANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:AssetsCurrent █▅▇▇█▅▄▄▄▅▃▃▁▁▁▃238.221222.483231.975232.914237.221220.948214.263215.91214.419217.775207.13206.772195.516196.009195.739209.585
us-gaap:CashAndCashEquivalentsAtCarryingValue ▄▃▅▆▆▇▇▃▆██▅▁▂▂▂36.50734.11738.92941.15841.2643.45743.60934.03241.39545.48844.35839.16328.00231.03431.19830.398
us-gaap:AccountsReceivableNetCurrent █▅▅▆▇▃▃▆▄▄▃▄▄▂▁▃94.8483.44183.51785.84291.76773.60473.13987.03478.10777.42173.97280.3779.68670.51367.08973.343
us-gaap:InventoryNet █▇█▇▇▅▄▃▄▄▂▁▁▂▂▆95.45492.51395.71892.22792.73287.55785.25982.40283.21283.34277.88675.67575.49877.4478.69288.685
us-gaap:InventoryFinishedGoods ▇▇█▆▇▆▆▅▄▄▂▂▁▂▄▇44.55944.6945.7640.94543.32842.47742.16339.55738.0637.96633.7832.88931.44433.56937.41942.812
us-gaap:InventoryLIFOReserve ▆▆▆▆▆▆▅▄▂▂▁▁▁▁▆█4.8634.8494.6674.9784.8524.7294.4744.0433.3993.2282.9912.9642.8232.8374.885.613
us-gaap:OtherAssetsCurrent ▃▂▅▆▁▄▃▄▄▂▂▁▂█▄▂3.0512.6594.2894.7982.0364.0692.8823.7424.1132.5922.2141.8612.3456.3853.5612.824
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:PropertyPlantAndEquipmentGross █▇█▇▇▆▅▅▅▆▅▅▅▅▂▁295.661285.128294.71286.135279.946265.355261.702261.682259.802266.742261.205262.875257.438253.57222.788207.807
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █▇██▇▇▆▆▆▆▅▆▅▅▂▁171.4165.772170.692168.438167.683162.169158.747157.074154.63156.906152.607154.568150.204146.758127.07119.447
us-gaap:AmortizationOfIntangibleAssets ▆▆▆█▃▃▁▃▃▃▁▃▃▃▆▆0.40.40.40.50.30.30.20.30.30.30.20.30.30.30.40.4
us-gaap:PropertyPlantAndEquipmentNet █▇█▇▆▄▄▄▄▅▅▅▅▅▂▁124.261119.356124.018117.697112.263103.186102.955104.608105.172109.836108.598108.307107.234106.81295.71888.36
us-gaap:Goodwill ▇▇█▆█▆▂▂▂▂▂▂▂▂▁▁27.04825.81427.8425.27828.72625.46515.62115.88215.86716.62216.54416.68916.47816.14514.60815.116
us-gaap:FiniteLivedIntangibleAssetsNet ▇▆██▆▁▁▂▂▃▃▃▃▃▅▇13.78613.4815.11615.21612.8598.3188.4588.8579.0939.81810.0210.40410.46810.50412.44714.309
us-gaap:OperatingLeaseRightOfUseAsset █████▆▁12.98913.06212.45312.51213.01110.0670.0NANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▇▆█▆▇▅▂▃▄▇▁▂▃▂▁▁13.68612.96814.60513.16713.61112.40710.610.88211.50614.0029.71910.13210.97810.6019.8859.613
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:LiabilitiesCurrent █▆▇██▅▄▅▃▂▃▃▂▁▁▄84.33874.45181.07383.48283.50270.93869.48770.40364.82261.59262.83365.56859.0855.8956.63166.525
us-gaap:LongTermDebtCurrent ▇██▇▆▄▄▄▄▄▄▄▄▄▁▁2.7893.3093.3542.7192.2791.4941.4481.4481.4481.4481.4481.4481.4481.4480.2670.453
us-gaap:TaxesPayableCurrent ▄▂▄█▃▂▁▁▂▅▅▂▂▂1.6681.241.7582.8141.3371.0180.8150.9121.1991.8981.9031.1571.0380.972NANA
us-gaap:DividendsPayableCurrent █▇▆▄▃▁▁▁▁▁▁▁▁▁▃▃1.221.2051.1731.1321.0921.0551.0511.051.0551.0581.0461.051.0551.0551.1061.104
us-gaap:OperatingLeaseLiabilityCurrent █▇███▇▁2.171.9912.0622.092.1422.0050.0NANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:LongTermDebtNoncurrent ██▇▇▇▅▃▄▅▆▄▄▅▆▁▃57.65758.72453.72252.88855.22241.76924.9632.68137.30843.79334.59832.82836.5745.31912.44425.464
us-gaap:DeferredTaxLiabilitiesNoncurrent NA2.8293.1163.6193.1981.7311.7111.8411.8332.0462.092.2442.2012.1263.984.29
us-gaap:DeferredIncomeTaxLiabilitiesNet 2.879NA3.116NANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▁▁▁▁▁▁▁▁▄▅▅▄▄▄▆█5.1485.2795.2785.0825.0855.1725.2594.91910.00610.58310.66410.05810.29810.36812.26315.877
us-gaap:MinorityInterest ▄▃▆█▁-0.005-0.0120.0330.054-0.038NA0.0NANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent █▇█▇▇▅▄▄▆▆▆▃▃▃▂▁13.44611.79913.56811.8511.5268.9368.017.7210.58210.92611.0637.2756.8256.7044.5533.855
us-gaap:OperatingLeaseLiabilityNoncurrent ██████▁8.6428.6758.2468.3668.8068.3790.0NANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:StockholdersEquity ▇▅█▆▆▅▅▄▃▄▃▄▂▁264.161251.512268.535259.663257.852250.203249.37246.405239.529247.021238.537244.652236.597230.133NANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▇▄█▆▅▄▄▃▁▃▁264.156251.5268.568259.717257.814250.203249.37246.405239.529247.021238.537NANANA242.795225.008
us-gaap:CommonStockValue ███▇▇▇▇▇▇▇▇▇▇▇▁▁13.00313.00312.84812.82512.82212.82112.66212.64312.63912.63512.59312.51412.51412.51310.72210.666
us-gaap:AdditionalPaidInCapitalCommonStock ███▇▇▇▆▆▆▅▅▄▄▄▂▁40.38539.74738.85437.64236.235.14634.40133.28431.65730.57629.73426.98325.91625.31518.67214.19
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▇▇▇▇▆▆▆▅▅▅▅▂▁365.443355.984353.292348.71341.804334.947334.17329.959321.954316.275311.765312.206306.979303.877235.052218.844
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▂▁▃▂▃▃▃▃▃▅▄▅▄▄██-68.573-74.136-57.353-62.733-56.944-58.137-59.583-57.239-56.792-43.517-47.44-45.922-48.932-51.825-21.651-18.692
us-gaap:TreasuryStockValue █▇▆▆▅▅▄▄▄▃▃▁▁▁86.09783.08679.10676.78176.0374.57472.2872.24269.92968.94868.11561.12959.8859.747NANA
us-gaap:MinorityInterest ▄▃▆█▁-0.005-0.0120.0330.054-0.038NA0.0NANANANANANANANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues ▁█0.0260.155NA0.0570.0270.141NA0.210.1580.094NANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▁█0.5860.933NA1.3450.9850.892NA1.4040.8780.781NANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▁▄▇▄▂▇▂▅▂▆█12.239-3.0556.54814.8345.3340.50115.889-0.5928.706-1.02712.11719.694NANA13.80214.253
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▆▆▅▁▃██▇▆██-5.823-5.997-7.511-9.839-18.388-13.065-2.044-1.719-3.253-7.007-2.596-2.338NANA-4.895-0.549
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▅▃▂█▇▂▁▁▆▂▁-5.0155.711-2.262-4.68713.52911.134-4.274-6.046-7.0178.286-3.891-6.897NANA-5.806-11.647
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▅▂▃▄▃▄▇▁▂▄▆█▃▄2.389-5.146-2.222-0.1-2.187-0.1389.549-7.356-5.0731.1914.64811.158-2.9470.215NANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▁▄▇▄▂▇▂▅▂▆█12.239-3.0556.54814.8345.3340.50115.889-0.5928.706-1.02712.11719.694NANA13.80214.253
us-gaap:NetIncomeLoss █▃▅▆▆▂▄▇▅▄▁▅▃▂▅▅10.4813.6985.6247.9517.9041.8245.2649.0546.7355.5280.7026.2784.1561.5186.3866.596
us-gaap:ProfitLoss █▃▅▆▆▂▄▇▅▄▁▅10.4883.6535.6028.0447.8661.8245.2639.0546.7355.5280.7026.278NANA6.3866.596
us-gaap:DepreciationDepletionAndAmortization ▄▅█▄▅▃▃▁▄▄▇▄▂▂▃▁3.3043.3573.9043.3053.3993.143.1492.7713.2593.2653.6823.2352.9012.9723.1232.739
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▂▅▃▆▁█▂▄▃▆▂▃▄▅▄▄-1.9721.516-0.8022.96-2.5284.565-1.5010.844-0.2772.787-1.144-0.1990.2571.3870.3840.54
us-gaap:IncreaseDecreaseInAccountsReceivable ▇▅▃▃█▄▁▆▅▅▃▄▆▆▅▄10.5215.192-3.088-3.29716.553-0.391-12.9729.8764.962.635-6.039-0.049.146.1443.8611.22
us-gaap:IncreaseDecreaseInInventories ▅▇▆▆▅▆▇▄██▆▄▃▅▁▅1.2993.4812.5642.7771.7382.3763.791-0.3685.4624.8182.797-0.05-2.0561.517-4.7041.313
us-gaap:DeferredIncomeTaxExpenseBenefit ▄▆▅▃▃▄▅▄▄▄█▅▃▄▄▁-0.4861.1630.229-0.791-0.8080.0960.794-0.018-0.308-0.1542.5790.647-0.501-0.289-0.159-2.192
us-gaap:ShareBasedCompensation ▁▃▄▅▃▃█▁▃▂▃▃▁▁▃▂0.6120.9761.0521.3881.0280.9281.9350.5840.9860.7310.8681.0470.5790.5610.8870.836
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▆▆▅▁▃██▇▆██-5.823-5.997-7.511-9.839-18.388-13.065-2.044-1.719-3.253-7.007-2.596-2.338NANA-4.895-0.549
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▄▅▆██▂▁▁▂▂▂▂▂▁▄▂5.8235.9977.5179.9679.5872.3962.2361.7192.8742.6993.4013.2782.3372.2174.9063.451
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▅▃▂█▇▂▁▁▆▂▁-5.0155.711-2.262-4.68713.52911.134-4.274-6.046-7.0178.286-3.891-6.897NANA-5.806-11.647
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▃▆▅▃▅█▄▅▃▄▃▂▁▃▃▂16.21824.94522.30615.09422.50433.13218.54222.21614.96920.30317.02413.5199.57515.46315.11112.646
us-gaap:RepaymentsOfLongTermDebt ▆▆▇▅▃▆██▇▄▅▅▆▄▆▁19.06517.65222.54615.9978.22717.35426.20126.86521.31811.11215.22917.28118.31613.15518.570.148
us-gaap:PaymentsOfDividendsCommonStock ▇█▇▇█▇▇▇▇▇▇▇▇▇▁█0.9981.1751.0041.0061.1771.0430.9671.0561.0571.0080.951.0571.0551.0370.0981.105
us-gaap:PaymentsForRepurchaseOfCommonStock █▅▂▃▅▂▂▂▂▂▂▁▂▂▇▂3.0111.6020.4030.7021.4560.2390.0360.0450.00.110.0-0.2360.2380.02.7580.102
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:ShortTermDebtType plpc:AustrianSubsidiary,us-gaap:LineOfCreditNA1.4e-081.4e-081.4e-081.2e-082e-08NANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:ShortTermDebtType,dei:LegalEntity us-gaap:LineOfCredit,plpc:AustrianSubsidiaryNANANANANANANANANANANANANANANANA

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1313121212121212121212121212121212121210101010101010101010101010101010101010
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.03.13.03.03.03.33.53.53.53.43.53.53.63.63.73.53.63.83.83.23.13.23.03.02.93.03.23.13.23.13.23.13.13.13.33.43.33.8

None

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4934500.04995100.04993000.05016300.05030200.05059400.05020400.05012100.05037000.05048800.05038200.05091400.05116000.05118100.05117800.05125800.05170200.05205000.05221100.05296000.05391700.05393400.05397100.05354500.05390000.05388700.05391100.05361200.05360900.05376300.05377900.05307600.05333000.05332500.05333600.05248400.05258200.05271000.0
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4934500.04995100.04993000.05016300.05030200.05059400.05020400.05012100.05037000.05048800.05038200.05091400.05116000.05118100.05117800.05125800.05170200.05205000.05221100.05296000.05391700.05393400.05397100.05354500.05390000.05388700.05391100.05361200.05360900.05376300.05377900.05307600.05333000.05332500.05333600.05248400.05258200.05271000.0
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value4973000.05017000.05119000.05058000.05054000.05138000.05064000.05064000.05120000.05127000.05130000.05169000.05208000.05229000.05372000.05393000.05396000.05376000.05393000.05431000.05449.05450.05457.05431000.05441000.05438000.05381000.05393000.05400000.05390000.05402000.0
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value4966000.05008000.05024000.05049000.05045000.05025000.05044000.05046000.05104000.05116000.05118000.05146000.05186000.05211000.05356000.05392000.05396000.05372000.05389000.05392000.05361.05368.05377.05319000.05332000.05334000.05253000.05263000.05272000.05238000.05253000.0
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302013-06-302012-09-232012-06-30
Value40313.020000.015000.015000.000012000.027000.048498.033350.047850.060350.061800.059750.053100.059750.025750.0022500.025750.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

None

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.110.741.121.581.570.361.051.81.341.10.141.230.810.31.00.920.530.510.580.040.68-0.050.460.480.940.510.591.141.190.920.991.751.241.521.71.271.591.331.151.891.16
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.110.741.091.551.560.361.021.761.331.090.141.230.810.30.990.920.530.510.580.040.68-0.050.460.480.940.50.581.121.170.910.981.711.211.51.671.241.551.31.161.831.13
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
Value1171021131191149710510810898969997846.8110
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-10.008-7.26-7.256-9.496-8.05-7.825-8.168-11.403-8.934-6.195-7.748-5.91-7.249-6.614-6.294-6.04-5.807-5.652-6.482-5.755-5.6716.5218.3899.9497.416.657.719.0246.818.177.7768.578
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.5-7.1-6.4-8.0-7.0-8.1-7.7-10.5-8.2-6.3-8.0-6.0-7.4-7.80.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.00.00.0
Percentage of Revenues-8.5-7.1-6.4-8.0-7.0-8.1-7.7-10.5-8.2-6.3-8.0-6.0-7.4-7.80.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.00.00.0
Percentage of Revenues us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementGeographical

us-gaap:IntersegmentElimination, plpc:PlpUsa


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-2.129-2.86-3.44-2.166-2.263-4.862-2.252-2.183-2.458-3.012-3.007-2.647-1.965-2.213-2.349-2.09-2.0822.8183.2353.5513.212.7253.084.1413.02.7181.6361.6552.355
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.8-2.8-2.9-1.9-2.3-4.5-2.1-2.2-2.5-3.1-3.60.00.00.00.00.00.00.00.00.00.00.00.00.044.10.00.00.023.4
Percentage of Revenues-1.8-2.8-2.9-1.9-2.3-4.5-2.1-2.2-2.5-3.1-3.60.00.00.00.00.00.00.00.00.00.00.00.00.044.10.00.00.023.4
Percentage of Revenues us-gaap:IntersegmentElimination plpc:PlpUsa0.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0

us-gaap:IntersegmentElimination, srt:Americas


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-2.813-1.863-2.149-1.626-2.13-2.622-2.614-1.968-1.284-1.467
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.4-1.8-1.8-1.4-2.2-2.4-2.4-2.0-1.3-1.5
Percentage of Revenues-2.4-1.8-1.8-1.4-2.2-2.4-2.4-2.0-1.3-1.5
Percentage of Revenues us-gaap:IntersegmentElimination srt:Americas0.00.00.00.00.00.00.00.00.00.0

us-gaap:IntersegmentElimination, srt:AsiaPacific


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-3.91-2.087-3.572-3.932-3.195-3.409-3.562-1.71-1.902-2.485
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.3-2.0-3.0-3.4-3.3-3.1-3.3-1.7-1.9-2.5
Percentage of Revenues-3.3-2.0-3.0-3.4-3.3-3.1-3.3-1.7-1.9-2.5
Percentage of Revenues us-gaap:IntersegmentElimination srt:AsiaPacific0.00.00.00.00.00.00.00.00.00.0

us-gaap:IntersegmentElimination, us-gaap:EMEA


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-1.156-0.45-0.335-0.326-0.237-0.51-0.506-0.334-0.266-0.285-0.315-0.16-0.257-0.399-0.82-0.19-0.2190.4230.6280.490.3680.3620.4310.5412.1720.8111.6861.0340.93
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0-0.4-0.3-0.3-0.2-0.5-0.5-0.3-0.3-0.3-0.40.00.00.00.00.00.00.00.00.00.00.00.00.031.90.00.00.09.2
Percentage of Revenues-1.0-0.4-0.3-0.3-0.2-0.5-0.5-0.3-0.3-0.3-0.40.00.00.00.00.00.00.00.00.00.00.00.00.031.90.00.00.09.2
Percentage of Revenues us-gaap:IntersegmentElimination us-gaap:EMEA0.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

plpc:PlpUsa


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value53464247464140464239344038343936414341363838
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax45.945.337.739.940.442.638.742.639.240.235.640.539.141.20.00.00.0428.80.00.00.00.0
Percentage of Revenues45.945.337.739.940.442.638.742.639.240.235.640.539.141.20.00.00.0428.80.00.00.00.0
Percentage of Revenues plpc:PlpUsa0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Americas


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value17171719171314141819171816
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.916.815.116.515.414.213.913.516.519.918.518.617.3
Percentage of Revenues14.916.815.116.515.414.213.913.516.519.918.518.617.3
Percentage of Revenues srt:Americas0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:AsiaPacific


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value25183330282634292624272525
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.418.129.825.824.527.133.227.024.624.528.025.625.7
Percentage of Revenues21.418.129.825.824.527.133.227.024.624.528.025.625.7
Percentage of Revenues srt:AsiaPacific0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EMEA


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2120192122151518211517151713
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.919.817.417.719.716.114.216.919.715.417.915.318.016.4
Percentage of Revenues17.919.817.417.719.716.114.216.919.715.417.915.318.016.4
Percentage of Revenues us-gaap:EMEA0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:Revenues

us-gaap:Revenues


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-06-302012-06-30
Value1171021131191149710510810898969997846.8110
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value78697779776973747366666567
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues66.468.068.267.067.171.969.669.167.767.968.366.269.6

None

us-gaap:GrossProfit

us-gaap:GrossProfit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3932363937273233353130332924292826242626262429323127303137313238363634373632293127
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues33.632.031.833.032.928.130.430.932.332.131.733.830.429.20.00.00.00.00.00.00.00.00.00.00.00.00.00.0551.40.00.00.0366.90.00.00.00.00.00.00.00.0

None

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2427282726252425252323232322222222202024212425272323242327242325272322272322211820
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues21.027.025.023.223.226.022.923.523.824.223.723.924.026.50.00.00.00.00.00.00.00.00.00.00.00.00.00.0397.40.00.00.0270.90.00.00.00.00.00.00.00.0

None

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1213131312121111111011111010101010109.2828.019.3911010101011101012119.2781212129.357121110109.8569.666
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.613.111.711.111.212.710.910.810.411.111.411.111.012.20.00.00.00.00.00.00.00.00.00.00.00.00.00.0178.10.00.00.0120.60.00.00.00.00.00.00.00.0

None

us-gaap:SellingAndMarketingExpense

us-gaap:SellingAndMarketingExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value8.4398.9059.7419.419.0468.4139.0618.9659.4718.8618.1818.9578.6268.2847.9638.0228.1837.6317.7417.8937.7527.2078.6459.4449.0618.5058.4788.8749.2919.0619.3479.3449.5068.8969.0329.4859.2728.0368.3027.6787.038
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues7.28.78.67.97.98.78.68.38.79.08.49.08.89.80.00.00.00.00.00.00.00.00.00.00.00.00.00.0136.40.00.00.094.40.00.00.00.00.00.00.00.0

None

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value145.1537.82311112.0467.8418.0159.3337.7457.7469.816.2942.2587.0886.6254.0793.6875.1642.0865.185-0.0854.2785.1357.6124.2135.5258.267106.8679.184139.67412121013107.276126.916
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues12.65.06.99.89.72.17.47.48.67.98.09.96.52.70.00.00.00.00.00.00.00.00.00.00.00.00.00.0154.00.00.00.096.00.00.00.00.00.00.00.00.0

None

us-gaap:InterestExpense

us-gaap:InterestExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value719000.0709000.0529000.0735000.0585000.0368000.0298000.0364000.0348000.0280000.0230000.0255000.0277000.0299000.0256000.0264000.0166000.0158000.0142000.0141000.0149000.0133000.0154000.0141000.0202000.0161000.0121000.0121000.0105000.0103000.0108000.0144000.0149000.0196000.0173000.0177000.0266000.0211000.0191000.0162000.0126000.0
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.60.70.50.60.50.40.30.30.30.30.20.30.30.40.00.00.00.00.00.00.00.00.00.00.00.00.00.01.50.00.00.01.50.00.00.00.00.00.00.00.0

None

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-282000.0549000.0-41000.0138000.097000.071000.0191000.094000.0105000.069000.070000.0122000.081000.055000.073000.0110000.0-208000.052000.062000.093000.0-682000.057000.0111000.0162000.098000.0-24000.085000.0194000.0162000.037000.065000.0235000.0209000.0145000.0471000.0194000.043000.0184000.0213000.01005000.0409000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.20.5-0.00.10.10.10.20.10.10.10.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.02.40.00.00.02.10.00.00.00.00.00.00.00.0

None

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpense

plpc:TimeBasedRestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value100000.0100000.0100000.0200000.0100000.0100000.0200000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.10.10.10.20.10.10.20.10.10.10.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Revenues plpc:TimeBasedRestrictedStockUnitsRSU0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:PlanName, us-gaap:Range

plpc:LongTermIncentivePlanStockOption, srt:Maximum


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value100000.0900000.0100000.0100000.0100000.00100000.0100000.0100000.00100000.0100000.0
Percentage of AllocatedShareBasedCompensationExpense100.0900.050.0100.0100.00.0100.0100.0100.00.0100.0100.0
Percentage of Revenues0.10.80.10.10.10.00.10.10.10.00.10.1
Percentage of Revenues plpc:LongTermIncentivePlanStockOption srt:Maximum0.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value135.1047.42311101.9287.8797.8569.2247.6297.6919.7396.2582.1186.996.5343.7733.6565.1582.1414.466-0.0594.3735.2947.6064.1375.6538.544106.9179.313139.91312121013107.411137.293
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues11.85.06.59.49.42.07.57.28.57.87.99.86.42.50.00.00.00.00.00.00.00.00.00.00.00.00.00.0156.80.00.00.098.40.00.00.00.00.00.00.00.0

None

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-0.922-0.049-0.4-0.386-0.265-0.1180.039-0.159-0.109-0.116-0.055-0.071-0.036-0.14-0.098-0.091-0.306-0.031-0.0060.055-0.7190.0260.0950.159-0.006-0.0760.1280.2770.1910.050.1290.2510.2390.0860.4510.148-0.0830.1240.1350.9270.377
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.8-0.0-0.4-0.3-0.2-0.10.0-0.1-0.1-0.1-0.1-0.1-0.0-0.20.00.00.00.00.00.00.00.00.00.00.00.00.00.02.80.00.00.02.40.00.00.00.00.00.00.00.0

None

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.3971.4511.823.2132.9840.1042.617-1.1982.4892.1016.9893.4612.1020.61.8891.7921.0180.9982.1131.9350.7860.1971.8852.7392.5261.3992.5212.444.2941.9524.044.1263.3174.0583.5273.5684.523.3951.4154.0021.197
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.91.41.62.72.60.12.5-1.12.32.17.23.52.20.70.00.00.00.00.00.00.00.00.00.00.00.00.00.063.10.00.00.032.90.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:StatementGeographical

plpc:PlpUsa


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value2.0250.8450.7141.3331.766-0.5131.11-1.9680.8540.3745.4361.6660.463-0.4221.4582.9172.0811.9472.6361.7081.5432.117
Percentage of IncomeTaxExpenseBenefit59.658.239.241.559.2-493.342.4164.334.317.877.848.122.0-70.374.772.250.458.765.048.443.246.8
Percentage of Revenues1.70.80.61.11.5-0.51.1-1.80.80.45.61.70.5-0.50.00.00.019.30.00.00.00.0
Percentage of Revenues plpc:PlpUsa0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Americas


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.8120.6340.6030.9010.870.1760.7680.2130.9791.3880.9611.1170.804
Percentage of IncomeTaxExpenseBenefit23.943.733.128.029.2169.229.3-17.839.366.113.832.338.2
Percentage of Revenues0.70.60.50.80.80.20.70.20.91.41.01.10.8
Percentage of Revenues srt:Americas0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:AsiaPacific


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.115-0.1140.4610.4830.3450.3660.4240.3270.2350.1020.1180.1470.46
Percentage of IncomeTaxExpenseBenefit3.4-7.925.315.011.6351.916.2-27.39.44.91.74.221.9
Percentage of Revenues0.1-0.10.40.40.30.40.40.30.20.10.10.10.5
Percentage of Revenues srt:AsiaPacific0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EMEA


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.4450.0860.0420.4960.0030.0750.3150.230.4210.2370.4740.5310.3750.203
Percentage of IncomeTaxExpenseBenefit13.15.92.315.40.172.112.0-19.216.911.36.815.317.833.8
Percentage of Revenues0.40.10.00.40.00.10.30.20.40.20.50.50.40.2
Percentage of Revenues us-gaap:EMEA0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:ProfitLoss

us-gaap:ProfitLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value103.6535.6028.0447.8661.8245.2639.0546.7355.5280.7026.2783.68-0.2562.4882.5555.082.7383.1326.1046.3864.9655.2739.2846.5968.1338.946.668.536.8545.9969.8826.096
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues8.93.64.96.76.81.95.08.46.25.60.76.30.00.00.00.00.00.00.00.093.80.00.00.065.50.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


None
Period End2020-06-302020-03-312019-09-302019-06-30
Value0.007-0.0450.093-0.039
Percentage of ProfitLoss0.1-1.21.2-0.5
Percentage of Revenues0.0-0.00.1-0.0
Percentage of Revenues us-gaap:NoncontrollingInterest0.00.00.00.0

us-gaap:Parent


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value103.6987.9517.9041.824
Percentage of ProfitLoss99.9101.298.8100.5100.0
Percentage of Revenues8.93.66.76.91.9
Percentage of Revenues us-gaap:Parent0.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value103.6987.9517.9041.8249.0546.7355.528
Percentage of ProfitLoss99.9101.298.8100.5100.0100.0100.0100.0
Percentage of Revenues8.93.66.76.91.98.46.25.6
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

None

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value5.472-16.8815.472-5.8971.11.353-2.187-0.563-13.3673.831-1.1722.962.815.472-6.8771.286-1.8553.867-0.743-10.001-0.431-8.614-6.642-9.8132.2951.83-2.6932.376-8.560.420.9062.66-7.1595.273-1.879-11.2693.127
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.7-16.44.8-4.91.01.4-2.1-0.5-12.33.9-1.23.02.96.50.00.00.00.00.00.00.00.00.00.00.00.00.00.0-125.70.00.00.0-71.10.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedTranslationAdjustment


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value5.472-16.881-5.8971.11.353-0.563-13.3673.832-1.1722.962.815.472-6.8771.286-1.8553.867-0.743-10.001-0.431-8.614-6.642-9.8132.2951.83-2.6932.376-8.56
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.7-16.4-4.91.01.4-0.5-12.33.9-1.23.02.96.50.00.00.00.00.00.00.00.00.00.00.00.00.00.0-125.7
Percentage of Revenues us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value5.472-16.881-5.8971.11.353
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0
Percentage of Revenues4.7-16.4-4.91.01.4
Percentage of Revenues us-gaap:Parent0.00.00.00.00.0

None

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value5.563-16.7835.38-5.7891.1931.446-2.344-0.447-13.2753.922-1.5183.012.8935.544-6.761.377-1.7793.944-0.244-9.902-0.343-8.528-11.751-9.8112.2981.8321.4962.453-8.4840.4972.2512.777-7.0355.382-5.591-11.2043.203
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.7-16.34.7-4.91.01.5-2.2-0.4-12.24.0-1.63.03.06.60.00.00.00.00.00.00.00.00.00.00.00.00.00.0-124.60.00.00.0-69.80.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value0.0910.098-0.0920.1080.0930.093-0.1570.1160.0920.091-0.3460.050.0830.0720.1170.0910.0760.0770.4990.0990.0880.086-5.1090.0020.0030.0024.1890.0770.076
Percentage of OtherComprehensiveIncomeLossNetOfTax1.6-0.6-1.7-1.97.86.46.7-26.0-0.72.322.81.72.91.3-1.76.6-4.32.0-204.5-1.0-25.7-1.043.5-0.00.10.1280.03.1-0.9
Percentage of Revenues0.10.1-0.10.10.10.1-0.10.10.10.1-0.40.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.01.1
Percentage of Revenues us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value5.472-16.8815.472-5.8971.11.353-2.187-0.563-13.3673.831-1.1722.962.815.472-6.8771.286-1.8553.867-0.743-10.001-0.431-8.614-6.642-9.8132.2951.83-2.6932.376-8.56
Percentage of OtherComprehensiveIncomeLossNetOfTax98.4100.6101.7101.992.293.693.3126.0100.797.777.298.397.198.7101.793.4104.398.0304.5101.0125.7101.056.5100.099.999.9-180.096.9100.9
Percentage of Revenues4.7-16.44.8-4.91.01.4-2.1-0.5-12.33.9-1.23.02.96.50.00.00.00.00.00.00.00.00.00.00.00.00.00.0-125.7
Percentage of Revenues us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302012-09-302012-06-302011-09-302011-06-30
Value7000.0-45000.0-21000.093000.0-38000.0000000037000.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.00.00.00.00.00.00.00.0100.0
Percentage of Revenues0.0-0.0-0.00.1-0.00.00.00.00.00.00.00.00.0

None

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value16-13.132.2559.0583.278.607-6.549.45112-0.43913-4.544119.417
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues13.6-12.81.97.93.47.9-6.09.60.0-4.40.00.00.00.0

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.007-0.0450.093-0.0390.0
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest0.00.34.1-0.40.0
Percentage of Revenues0.0-0.00.1-0.00.0
Percentage of Revenues us-gaap:NoncontrollingInterest0.00.00.00.00.0

us-gaap:Parent


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value16-13.0852.1629.0973.27
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.099.795.9100.4100.0
Percentage of Revenues13.6-12.71.87.93.4
Percentage of Revenues us-gaap:Parent0.00.00.00.00.0

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value103.6985.6247.9517.9041.8245.2649.0546.7355.5280.7026.2784.1561.5185.14.7422.7552.6583.0450.2063.68-0.2562.4882.5555.082.7383.1326.1046.3864.9655.2739.2846.5968.1338.946.668.3866.9986.0069.8796.096
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues8.93.64.96.76.91.95.08.46.25.60.76.34.31.80.00.00.00.00.00.00.00.00.00.00.00.00.00.093.80.00.00.065.50.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementGeographical

plpc:PlpUsa


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value6.1353.550.6123.2464.278-0.0810.1416.21.8431.714-4.6021.9180.949-0.632
Percentage of NetIncomeLoss58.596.010.940.854.1-4.42.768.527.431.0-655.630.622.8-41.6
Percentage of Revenues5.23.50.52.73.7-0.10.15.71.71.7-4.71.91.0-0.7
Percentage of Revenues plpc:PlpUsa0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Americas


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.6950.9951.4692.5651.6590.9641.8680.8112.6573.1432.3442.251.789
Percentage of NetIncomeLoss16.226.926.132.321.052.935.59.039.556.9333.935.843.0
Percentage of Revenues1.41.01.32.21.41.01.80.72.43.22.42.31.8
Percentage of Revenues srt:Americas0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:AsiaPacific


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.404-1.1842.7791.2871.1620.4282.4561.2380.6740.3081.4190.8510.749
Percentage of NetIncomeLoss3.9-32.049.416.214.723.546.713.710.05.6202.113.618.0
Percentage of Revenues0.3-1.22.41.11.00.42.31.10.60.31.50.90.8
Percentage of Revenues srt:AsiaPacific0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EMEA


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.2470.3370.7640.8530.8050.5130.7980.8051.5610.3631.5411.2590.6690.619
Percentage of NetIncomeLoss21.49.113.610.710.228.115.28.923.26.6219.520.116.140.8
Percentage of Revenues1.90.30.70.70.70.50.80.71.40.41.61.30.70.7
Percentage of Revenues us-gaap:EMEA0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value16-13.085112.1629.0973.272.9198.607-6.549.45-0.8169.2887.0497.062-1.6596.1190.9766.6022.751-9.6963.337-8.784-9.263-7.2567.3784.574.6288.557-2.0985.4627.54312-0.439133.349-4.544119.404
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues13.6-12.79.71.87.93.42.87.9-6.09.6-0.89.47.28.40.00.00.00.00.00.00.00.00.00.00.00.00.00.0-30.80.00.00.0-4.40.00.00.00.00.0

None

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302012-06-302011-06-302010-12-312010-09-30
Value7000.0-45000.0-21000.093000.0-38000.000000144000.0-10000.03000.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.00.00.00.00.00.0100.0100.0100.0
Percentage of Revenues0.0-0.0-0.00.1-0.00.00.00.00.00.00.00.00.0

None

us-gaap:Assets

us-gaap:Assets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value436413433425425387358363364375359362351350340352342330324331345337353362367358332345335342333344342348327312321280
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementGeographical

plpc:PlpUsa


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value134129127132127124118125124123116122123121122
Percentage of Assets30.931.229.431.129.932.132.934.434.132.832.433.735.034.635.9
Percentage of Assets30.931.229.431.129.932.132.934.434.132.832.433.735.034.635.9
Percentage of Assets plpc:PlpUsa100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Americas


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value70667173797369646770
Percentage of Assets16.216.016.617.318.719.119.417.818.619.7
Percentage of Assets16.216.016.617.318.719.119.417.818.619.7
Percentage of Assets srt:Americas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:AsiaPacific


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value129123137126123115113113111110
Percentage of Assets29.829.931.629.829.129.831.731.130.630.6
Percentage of Assets29.829.931.629.829.129.831.731.130.630.6
Percentage of Assets srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EMEA


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1009497929473576060666257565954
Percentage of Assets23.122.922.421.822.319.116.016.616.717.717.415.916.116.916.0
Percentage of Assets23.122.922.421.822.319.116.016.616.717.717.415.916.116.916.0
Percentage of Assets us-gaap:EMEA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value436413433425425387358363364375359362351350340352342330324331345337353362367358332345335342333344342348327312321280
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312013-12-312012-12-312011-12-312011-09-302011-06-302010-12-31
Value264251268259257250249246239247238244236230223226223224218220242252241212209214196
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets60.660.961.961.160.664.669.567.765.865.766.367.567.365.765.664.265.267.867.566.568.675.972.465.067.266.769.8

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-5.482-5.573-5.671-5.579-5.687-5.78-5.873-5.715-5.831-5.923-6.015-5.669-5.719-5.802-5.874-6.235-7.007-1.905-6.324
Percentage of StockholdersEquity-2.1-2.2-2.1-2.1-2.2-2.3-2.4-2.3-2.4-2.4-2.5-2.3-2.4-2.5-2.6-2.8-2.9-0.8-2.6
Percentage of Assets-1.3-1.3-1.3-1.3-1.3-1.5-1.6-1.6-1.6-1.6-1.7-1.6-1.6-1.7-1.7-1.9-2.0-0.6-1.9
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-68.573-74.136-57.353-62.733-56.944-58.137-59.583-57.239-56.792-43.517-47.439-45.922-48.932-51.825-57.369
Percentage of StockholdersEquity-26.0-29.5-21.4-24.2-22.1-23.2-23.9-23.2-23.7-17.6-19.9-18.8-20.7-22.5-25.7
Percentage of Assets-15.7-17.9-13.2-14.8-13.4-15.0-16.6-15.7-15.6-11.6-13.2-12.7-13.9-14.8-16.8
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-63.091-68.563-51.682-57.154-51.257-52.357-53.71-51.524-50.961-37.594-41.425-40.253-43.213-46.023-51.495-47.916-28.127-15.797-7.34
Percentage of StockholdersEquity-23.9-27.3-19.2-22.0-19.9-20.9-21.5-20.9-21.3-15.2-17.4-16.5-18.3-20.0-23.0-21.9-11.6-6.3-3.0
Percentage of Assets-14.5-16.6-11.9-13.4-12.1-13.5-15.0-14.2-14.0-10.0-11.5-11.1-12.3-13.1-15.1-14.8-7.9-4.8-2.2
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value238222231232237220214215214217207206195196189192182182188193200191200204204196185198195199194207209210205196200167
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets54.653.853.554.855.857.159.759.358.957.957.657.055.655.955.554.553.455.158.158.358.156.656.756.555.554.755.957.658.458.158.360.461.160.262.862.862.559.6

None

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value36343841414343344145443928313032283130263030292824212431312728283029322323242222222419
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.48.39.09.79.711.212.29.411.412.112.310.88.08.99.09.38.29.59.48.18.99.08.47.96.75.97.39.09.37.98.48.28.98.49.87.67.40.08.10.00.00.00.0

None

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value9483838591737387787773807970636965676366636367727574677367666175737468687456
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.720.219.320.221.619.020.423.921.520.620.622.222.720.118.619.719.020.519.620.018.318.819.220.120.620.920.321.420.019.518.522.021.421.421.122.123.320.0

None

us-gaap:InventoryNet

us-gaap:InventoryNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value9592959292878582838377757577747372706973787680797879737378868687889188858273
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.922.422.121.721.822.623.822.622.922.221.620.921.522.121.820.921.121.321.522.022.622.522.621.921.522.222.221.423.525.226.125.525.926.327.127.225.626.0

None

us-gaap:InventoryFinishedGoods

us-gaap:InventoryFinishedGoods


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value44444540434242393837333231333534353737374140414345433734374041424242
Percentage of InventoryFinishedGoods100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.210.810.69.610.211.011.810.910.510.19.49.18.99.610.59.910.411.411.611.411.911.911.812.012.412.211.210.111.211.812.512.512.512.9

None

us-gaap:InventoryLIFOReserve

us-gaap:InventoryLIFOReserve


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value4863000.04849000.04667000.04978000.04852000.04729000.04474000.04043000.03399000.03228000.02991000.02964000.02823000.02837000.02784000.03219000.03402000.03893000.03538000.04034000.04462000.04558000.04471000.04208000.04029000.04092000.04146000.0-4825000.04880000.04645000.04674000.05815000.05613000.05611000.0
Percentage of InventoryLIFOReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.11.21.11.21.11.21.21.10.90.90.80.80.80.80.80.91.01.21.11.21.31.31.31.21.11.11.2-1.41.51.41.41.71.61.7

None

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3051000.02659000.04289000.04798000.02036000.04069000.02882000.03742000.04113000.02592000.02214000.01861000.02345000.06385000.08436000.06203000.06209000.01738000.06343000.07904000.07899000.04262000.06625000.07605000.08540000.03736000.03154000.03638000.03561000.02987000.02432000.02563000.02824000.02341000.02285000.02262000.01769000.01611000.0
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.61.01.10.51.10.81.01.10.70.60.50.71.82.51.81.80.52.02.42.31.31.92.12.31.00.91.11.10.90.70.70.80.70.70.70.60.6

None

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value295285294286279265261261259266261262257253247249246233224224233231237240245239231228222224218212207198
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets67.869.068.067.365.868.572.971.971.470.972.672.573.272.372.570.872.070.669.367.867.668.467.166.366.866.769.666.366.565.465.661.860.660.7

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:BuildingAndBuildingImprovements


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value82808281787574757476757574747273727271727473757173726959596059585756
Percentage of PropertyPlantAndEquipmentGross28.028.428.128.627.928.428.628.728.828.829.128.829.129.229.429.629.431.131.932.131.831.931.830.029.830.430.326.226.727.027.227.627.928.3
Percentage of Assets18.919.619.119.318.419.520.820.620.620.421.120.921.321.121.320.921.121.922.121.721.521.921.419.919.920.321.017.417.717.717.917.116.917.2
Percentage of Assets us-gaap:BuildingAndBuildingImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value14109.466.3565.8743.8563.3924.3933.7814.3545.1244.024.4324.0843.8773.8684.0887.3993.3694.0874.7724.0583.3828.7228.3348.4237.18513119.6527.2426.4468.2816.447
Percentage of PropertyPlantAndEquipmentGross4.73.83.22.22.11.51.31.71.51.62.01.51.71.61.61.61.73.21.51.82.01.81.43.63.43.53.16.15.14.33.33.04.03.2
Percentage of Assets3.22.62.21.51.41.00.91.21.01.21.41.11.31.21.11.11.22.21.01.21.41.21.02.42.32.32.24.03.42.82.21.92.42.0
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LandAndLandImprovements


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value21202218161212121213131313121212121212121313141415131212121313131210
Percentage of PropertyPlantAndEquipmentGross7.17.27.56.46.04.84.84.84.85.05.05.15.15.15.15.25.25.45.55.45.75.86.06.16.35.45.35.65.86.06.06.26.25.2
Percentage of Assets4.85.05.14.34.03.33.53.53.53.63.73.73.73.73.73.73.83.83.83.73.93.94.04.14.23.63.73.73.83.94.03.83.83.1
Percentage of Assets us-gaap:LandAndLandImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MachineryAndEquipment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value177172180179179173171169168172166169165162158158157140137136141139144144148145141142139140138134128125
Percentage of PropertyPlantAndEquipmentGross60.260.661.262.764.065.465.364.864.964.663.964.664.264.163.963.763.860.361.260.760.560.560.860.360.560.761.462.262.562.763.463.261.963.2
Percentage of Assets40.841.841.642.242.144.847.746.646.345.846.446.947.046.346.445.145.942.642.441.140.941.440.740.040.440.542.741.241.641.041.639.137.538.4
Percentage of Assets us-gaap:MachineryAndEquipment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value171165170168167162158157154156152154150146142142139136132132135133134135137134130130127127125122119115
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets39.340.139.439.639.441.944.243.242.541.742.442.642.741.941.740.340.641.441.040.039.439.538.137.337.437.439.337.737.937.137.635.734.835.4

None

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value400000.0400000.0400000.0500000.0300000.0300000.0200000.0300000.0300000.0300000.0200000.0300000.0300000.0300000.0200000.0300000.0200000.0300000.0300000.0300000.0300000.0400000.0400000.0400000.0400000.0400000.0300000.0400000.0400000.0400000.0400000.0400000.0400000.0400000.0200000.0300000.0300000.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value12411912411711210310210410510910810810710610510710796919297971021051081051009895969390889382788076
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets28.528.928.627.726.426.728.728.728.929.230.229.930.530.530.830.431.329.228.327.828.329.029.029.029.429.330.228.528.628.328.026.225.826.725.325.325.127.1

None

us-gaap:Goodwill

us-gaap:Goodwill


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2725272528251515151616161616151616161515161617181919131414151515151412121212
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.26.26.45.96.86.64.44.44.44.44.64.64.74.64.64.74.84.94.94.74.85.05.05.15.35.34.24.34.44.54.74.54.44.23.73.94.04.4

us-gaap:Goodwill us-gaap:BusinessAcquisition

plpc:SubConAndMICOSTelcom


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value1212121013
Percentage of Goodwill44.947.043.641.246.0
Percentage of Assets2.82.92.82.43.1
Percentage of Assets plpc:SubConAndMICOSTelcom0.00.00.00.00.0

us-gaap:Goodwill us-gaap:StatementGeographical

srt:Americas


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value3.973.8424.1584.0984.1324.0543.9974.1884.0874.2924.017
Percentage of Goodwill14.714.914.916.214.415.925.626.425.825.925.5
Percentage of Assets0.90.91.01.01.01.01.11.21.11.21.2
Percentage of Assets srt:Americas5.65.85.85.65.25.55.76.46.06.10.0

srt:AsiaPacific


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value6.9136.2217.1626.7887.127.2567.1917.2217.3247.6797.387
Percentage of Goodwill25.624.125.726.924.828.546.045.546.246.446.8
Percentage of Assets1.61.51.71.61.71.92.02.02.02.12.2
Percentage of Assets srt:AsiaPacific5.35.05.25.45.86.36.36.46.67.00.0

us-gaap:EMEA


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value1312131114111.3551.3951.3781.5621.4951.4161.4241.3731.2871.3641.2881.3391.3011.3691.4361.4461.5281.6151.7351.7261.7541.8191.029
Percentage of Goodwill48.449.148.344.850.143.58.78.88.79.49.08.58.68.58.28.27.98.28.28.88.78.58.68.89.09.012.611.78.4
Percentage of Assets3.03.13.12.73.42.90.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.50.50.50.50.3
Percentage of Assets us-gaap:EMEA13.013.413.812.215.215.02.42.32.32.42.42.52.52.32.40.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value13131515128.3188.4588.8579.0939.81810101010101111111111121314151616111212131414141511111212
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.23.33.53.63.02.12.42.42.52.62.82.93.03.03.13.23.33.53.53.43.63.94.04.14.54.63.53.63.74.04.24.14.24.33.53.73.94.5

None

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1213121213100.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.00.0
Percentage of Assets3.03.22.92.93.12.60.0

None

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value131214131312101011149.71910101010111111111210111314151717139.885109.993109.613109.8629.385108.675
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.13.13.43.13.23.23.03.03.23.72.72.83.13.03.03.23.23.43.63.83.13.53.74.14.34.95.23.93.03.13.03.02.82.93.03.03.33.1

None

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8474818383706970646162655955556254505155554855595352525756555868666361707256
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.318.018.719.619.618.319.419.317.816.417.518.116.815.916.317.815.915.316.016.816.014.415.616.514.514.615.716.516.916.317.519.919.418.218.922.722.620.1

None

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2789000.03309000.03354000.02719000.02279000.01494000.01448000.01448000.01448000.01448000.01448000.01448000.01448000.01448000.01448000.01569000.01564000.0117000.0110000.0104000.0112000.0111000.0116000.0123000.0138000.0162000.0195000.0191000.0267000.0184000.0251000.0356000.0453000.0584000.0601000.0605000.0722000.01276000.0
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.80.80.60.50.40.40.40.40.40.40.40.40.40.40.40.50.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.20.20.20.20.5

None

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1668000.01240000.01758000.02814000.01337000.01018000.0815000.0912000.01199000.01898000.01903000.01157000.01038000.0972000.01055000.01221000.0907000.01183000.01423000.0
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.30.40.70.30.30.20.30.30.50.50.30.30.30.30.30.30.40.4

None

us-gaap:DividendsPayableCurrent

us-gaap:DividendsPayableCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1220000.01205000.01173000.01132000.01092000.01055000.01051000.01050000.01055000.01058000.01046000.01050000.01055000.01055000.01037000.01040000.01059000.01067000.01057000.01073000.01109000.01110000.01220000.01100000.01107000.01107000.01098000.01106000.01106000.0102000.01099000.01104000.01104000.01095000.01095000.01098000.01087000.0
Percentage of DividendsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.00.30.30.30.30.40.30.4

None

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2170000.01991000.02062000.02090000.02142000.02005000.00
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.50.50.50.50.50.50.0

None

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5758535255412432374334323645424444353131303031323431131412169.3221425332713149.374
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.214.212.412.413.010.87.09.010.211.69.69.110.412.912.612.513.010.89.89.58.99.19.08.99.38.93.94.33.74.72.84.37.49.68.64.34.43.3

None

us-gaap:DeferredTaxLiabilitiesNoncurrent

us-gaap:DeferredTaxLiabilitiesNoncurrent


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2829000.03116000.03619000.03198000.01731000.01711000.01841000.01833000.02046000.02090000.02244000.02201000.02126000.02078000.02516000.02529000.02602000.03447000.04324000.04564000.04541000.03283000.05646000.05656000.05584000.03621000.04047000.03980000.04458000.04485000.04270000.04290000.04548000.03255000.03362000.03666000.03606000.0
Percentage of DeferredTaxLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.70.90.80.40.50.50.50.50.60.60.60.60.60.70.70.81.11.31.31.30.91.61.51.61.11.21.21.31.31.21.31.31.01.11.11.3

None

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


None
Period End2020-06-302019-12-31
Value2879000.03116000.0
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0
Percentage of Assets0.70.7

None

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5.1485.2795.2785.0825.0855.1725.2594.9191010101010101010111111121212124.3544.5214.7635.02711121213151515159.5749.7749.473
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.31.21.21.21.31.51.42.72.83.02.82.93.03.13.03.43.53.63.73.63.73.51.21.21.31.53.43.73.74.04.44.64.54.83.13.03.4

None

us-gaap:MinorityInterest

us-gaap:MinorityInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312011-12-312011-09-302011-06-302010-12-31
Value-5000.0-12000.033000.054000.0-38000.00000-675000.0
Percentage of MinorityInterest100.0100.0100.0100.0100.00.00.00.00.0100.0
Percentage of Assets-0.0-0.00.00.0-0.00.00.00.00.0-0.2

None

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value13111311118.9368.017.721010117.2756.8256.7046.4956.0735.955.7416.6756.8656.4346.3556.4455.9576.05.9244.6034.6924.5534.4964.4573.8963.8553.9423.793.4944.8894.735
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.12.93.12.82.72.32.22.12.92.93.12.01.91.91.91.71.71.72.12.11.91.91.81.61.61.71.41.41.41.31.31.11.11.11.21.11.51.7

None

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8642000.08675000.08246000.08366000.08806000.08379000.00
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.02.11.92.02.12.20.0

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312013-12-312012-12-312011-12-312011-09-302011-06-302010-12-31
Value264251268259257250249246239247238244236230223226223224218220242252241212209214196
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets60.660.961.961.160.664.669.567.765.865.766.367.567.365.765.664.265.267.867.566.568.675.972.465.067.266.769.8

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-5.482-5.573-5.671-5.579-5.687-5.78-5.873-5.715-5.831-5.923-6.015-5.669-5.719-5.802-5.874-6.235-7.007-1.905-6.324
Percentage of StockholdersEquity-2.1-2.2-2.1-2.1-2.2-2.3-2.4-2.3-2.4-2.4-2.5-2.3-2.4-2.5-2.6-2.8-2.9-0.8-2.6
Percentage of Assets-1.3-1.3-1.3-1.3-1.3-1.5-1.6-1.6-1.6-1.6-1.7-1.6-1.6-1.7-1.7-1.9-2.0-0.6-1.9
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-68.573-74.136-57.353-62.733-56.944-58.137-59.583-57.239-56.792-43.517-47.439-45.922-48.932-51.825-57.369
Percentage of StockholdersEquity-26.0-29.5-21.4-24.2-22.1-23.2-23.9-23.2-23.7-17.6-19.9-18.8-20.7-22.5-25.7
Percentage of Assets-15.7-17.9-13.2-14.8-13.4-15.0-16.6-15.7-15.6-11.6-13.2-12.7-13.9-14.8-16.8
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-63.091-68.563-51.682-57.154-51.257-52.357-53.71-51.524-50.961-37.594-41.425-40.253-43.213-46.023-51.495-47.916-28.127-15.797-7.34
Percentage of StockholdersEquity-23.9-27.3-19.2-22.0-19.9-20.9-21.5-20.9-21.3-15.2-17.4-16.5-18.3-20.0-23.0-21.9-11.6-6.3-3.0
Percentage of Assets-14.5-16.6-11.9-13.4-12.1-13.5-15.0-14.2-14.0-10.0-11.5-11.1-12.3-13.1-15.1-14.8-7.9-4.8-2.2
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value264251268259257250249246239247238223235233242252262256252251242246241235225225212209214195170137
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets60.560.961.961.160.664.669.567.765.865.766.365.668.269.168.669.871.471.575.972.872.572.072.468.465.664.765.067.266.769.60.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

plpc:CommonSharesIssuedToRabbiTrust


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value-10.91-10.88-10.981-10.981-11.066-11.038-11.008-11.008-10.988-11.849-11.834-12.054
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-4.1-4.3-4.1-4.2-4.3-4.4-4.4-4.5-4.6-4.8-5.0-5.4
Percentage of Assets-2.5-2.6-2.5-2.6-2.6-2.9-3.1-3.0-3.0-3.2-3.3-3.5
Percentage of Assets plpc:CommonSharesIssuedToRabbiTrust0.00.00.00.00.00.00.00.00.00.00.00.0

plpc:DeferredCompensationLiability


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value101010101111111110111112
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest4.14.34.14.24.34.44.44.54.64.85.05.4
Percentage of Assets2.52.62.52.62.62.93.13.03.03.23.33.5
Percentage of Assets plpc:DeferredCompensationLiability0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value-5.482-5.573-5.671-5.579-5.687-5.78-5.873-5.716-5.832-5.924-6.015-5.874-7.007-1.905-6.324-8.019-4.45-4.781-6.244
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-2.1-2.2-2.1-2.1-2.2-2.3-2.4-2.3-2.4-2.4-2.5-2.6-2.9-0.8-2.6-3.8-2.3-2.8-4.6
Percentage of Assets-1.3-1.3-1.3-1.3-1.3-1.5-1.6-1.6-1.6-1.6-1.7-1.7-2.0-0.6-1.9-2.4-1.60.00.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value-63.091-68.563-51.682-57.154-51.257-52.357-53.71-51.523-50.96-37.593-41.425-51.495-28.127-15.797-7.34-9.02-1.56-6.588-18.267
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-23.9-27.3-19.2-22.0-19.9-20.9-21.5-20.9-21.3-15.2-17.4-23.0-11.6-6.3-3.0-4.2-0.8-3.9-13.3
Percentage of Assets-14.5-16.6-11.9-13.4-12.1-13.5-15.0-14.2-14.0-10.0-11.5-15.1-7.9-4.8-2.2-2.8-0.60.00.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value13131212121212121212121210101010101010
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest4.95.24.84.95.05.15.15.15.35.15.35.64.44.34.55.05.46.17.6
Percentage of Assets3.03.13.03.03.03.33.53.53.53.43.53.73.03.23.23.33.80.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockIncludingAdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value403938373635343331302924222116128.7485.885
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest15.315.814.514.514.014.013.813.513.212.412.511.09.48.46.86.04.53.4
Percentage of Assets9.39.69.08.98.59.19.69.18.78.18.37.26.46.34.93.93.10.0
Percentage of Assets us-gaap:CommonStockIncludingAdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value-0.005-0.0120.0330.054-0.0390.00.00.00.00.00.00.0-0.675-0.1450.736
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.0-0.00.00.0-0.00.00.00.00.00.00.00.0-0.3-0.10.5
Percentage of Assets-0.0-0.00.00.0-0.00.00.00.00.00.00.00.0-0.20.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value264251268259257250249238223
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets60.660.961.961.160.664.669.566.365.6
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value365355353348341334334329321316311303244238227206184165146
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest138.3141.5131.5134.3132.6133.9134.0133.9134.4128.0130.7135.7100.694.494.497.094.297.2107.0
Percentage of Assets83.886.181.582.080.486.593.190.788.484.186.789.069.171.668.363.165.50.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value-86.097-83.086-79.106-76.781-76.03-74.574-72.28-72.242-69.929-68.948-68.115-59.64
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-32.6-33.0-29.5-29.6-29.5-29.8-29.0-29.3-29.2-27.9-28.6-26.7
Percentage of Assets-19.7-20.1-18.2-18.1-17.9-19.3-20.1-19.8-19.2-18.3-18.9-17.5
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1313121212121212121212121212121212121210101010101010101010101010101010101010
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.03.13.03.03.03.33.53.53.53.43.53.53.63.63.73.53.63.83.83.23.13.23.03.02.93.03.23.13.23.13.23.13.13.13.33.43.33.8

None

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value403938373635343331302926252524242323222223232222222121191816161514131212118.748
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.39.69.08.98.59.19.69.18.78.18.37.47.47.27.26.96.97.07.16.76.86.96.46.16.06.16.35.75.64.94.94.54.13.83.93.93.53.1

None

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value365355353348341334334329321316311312306303303299295293292241245242244243243239238239235232227225218213206198194184
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets83.886.181.582.080.486.593.190.788.484.186.786.187.386.789.084.986.488.990.172.871.171.969.167.166.266.871.669.570.267.868.365.563.861.263.163.660.465.5

None

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-06-272016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value-68573000.0-74136000.0-57353000.0-62733000.0-56944000.0-58137000.0-59583000.0-57239000.0-56792000.0-43517000.0-47440000.0-45922000.0-48932000.0-51825000.0-57369000.0-50609000.0-51986000.0-51986000.0-50207000.0-54151000.0-53907000.0-44005000.0-43662000.0-35134000.0-23383000.0-13572000.0-15870000.0-17702000.0-19198000.0-21651000.0-13167000.0-13664000.0-15915000.0-18692000.0-11657000.0-17039000.0-11448000.0-244000.0-6010000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-15.7-17.9-13.2-14.8-13.4-15.0-16.6-15.7-15.6-11.6-13.2-12.7-13.9-14.8-16.8-14.4-15.20.0-15.2-16.7-16.3-12.8-12.9-9.9-6.5-3.7-4.4-5.3-5.6-6.5-3.8-4.1-4.6-5.5-3.3-5.2-3.7-0.1-2.1

None

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value8683797676747272696868615959595856555447
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.720.118.218.117.919.320.119.819.218.318.916.917.017.017.516.716.516.716.813.3

None

us-gaap:MinorityInterest

us-gaap:MinorityInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312011-12-312011-09-302011-06-302010-12-31
Value-5000.0-12000.033000.054000.0-38000.00000-675000.0
Percentage of MinorityInterest100.0100.0100.0100.0100.00.00.00.00.0100.0
Percentage of Assets-0.0-0.00.00.0-0.00.00.00.00.0-0.2

None

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value26000.0155000.057000.027000.0141000.0210000.0158000.094000.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:CommonStock


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value155000.03000.01000.0159000.04000.04000.042000.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.05.33.7112.81.92.544.7
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.0

us-gaap:CommonStockIncludingAdditionalPaidInCapital


None
Period End2020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value26000.054000.026000.0-18000.0206000.0154000.052000.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.094.796.3-12.898.197.555.3
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStockIncludingAdditionalPaidInCapital0.00.00.00.00.00.00.0

us-gaap:Parent


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value26000.0155000.057000.027000.0141000.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.0

None

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value586000.0933000.01345000.0985000.0892000.01404000.0878000.0781000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value612000.0976000.01388000.01028000.0928000.01421000.0927000.0790000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue104.4104.6103.2104.4104.0101.2105.6101.2
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStockIncludingAdditionalPaidInCapital0.00.00.00.00.00.00.00.0

us-gaap:Parent


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value586000.0933000.01345000.0985000.0892000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-26000.0-43000.0-43000.0-43000.0-36000.0-17000.0-49000.0-9000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue-4.4-4.6-3.2-4.4-4.0-1.2-5.6-1.2
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value12-3.0556.548145.3340.50115-0.5928.706-1.02712193.6862.13113-1.3961512148.1942.204125.076-2.9421110
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.4-3.05.812.44.60.515.1-0.58.0-1.012.519.80.00.0202.70.00.00.0141.50.00.00.00.00.00.00.0

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-5823000.0-5997000.0-7511000.0-9839000.0-18388000.0-13065000.0-2044000.0-1719000.0-3253000.0-7007000.0-2596000.0-2338000.0-8738000.0-4664000.0-4895000.0-5847000.0-5448000.0-2639000.0-549000.0-15615000.0-6171000.0-5939000.0-4223000.0-2443000.0-3071000.0-16389000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-5.0-5.8-6.6-8.3-16.0-13.4-1.9-1.6-3.0-7.1-2.7-2.40.00.0-71.90.00.00.0-5.40.00.00.00.00.00.00.0

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-5.0155.711-2.262-4.6871311-4.274-6.046-7.0178.286-3.891-6.89719-5.5341.827-5.8066.336-9.773-12.841-11.6473.84112-5.94-1.186.687-6.7295.429
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.35.6-2.0-3.911.811.5-4.1-5.6-6.48.4-4.0-6.90.00.00.0-85.30.00.00.0-115.60.00.00.00.00.00.00.0

None

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.389-5.146-2.222-0.1-2.187-0.1389.549-7.356-5.0731.1914.64811-2.9470.215
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.0-5.0-2.0-0.1-1.9-0.19.1-6.8-4.71.24.811.2-3.00.3

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value12-3.0556.548145.3340.50115-0.5928.706-1.02712193.6862.13113-1.3961512148.1942.204125.076-2.9421110
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.4-3.05.812.44.60.515.1-0.58.0-1.012.519.80.00.0202.70.00.00.0141.50.00.00.00.00.00.00.0

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value103.6985.6247.9517.9041.8245.2649.0546.7355.5280.7026.2784.1561.5185.14.7422.7552.6583.0450.2063.68-0.2562.4882.5555.082.7383.1326.1046.3864.9655.2739.2846.5968.1338.946.668.3866.9986.0069.8796.096
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues8.93.64.96.76.91.95.08.46.25.60.76.34.31.80.00.00.00.00.00.00.00.00.00.00.00.00.00.093.80.00.00.065.50.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementGeographical

plpc:PlpUsa


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value6.1353.550.6123.2464.278-0.0810.1416.21.8431.714-4.6021.9180.949-0.632
Percentage of NetIncomeLoss58.596.010.940.854.1-4.42.768.527.431.0-655.630.622.8-41.6
Percentage of Revenues5.23.50.52.73.7-0.10.15.71.71.7-4.71.91.0-0.7
Percentage of Revenues plpc:PlpUsa0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Americas


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.6950.9951.4692.5651.6590.9641.8680.8112.6573.1432.3442.251.789
Percentage of NetIncomeLoss16.226.926.132.321.052.935.59.039.556.9333.935.843.0
Percentage of Revenues1.41.01.32.21.41.01.80.72.43.22.42.31.8
Percentage of Revenues srt:Americas0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:AsiaPacific


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.404-1.1842.7791.2871.1620.4282.4561.2380.6740.3081.4190.8510.749
Percentage of NetIncomeLoss3.9-32.049.416.214.723.546.713.710.05.6202.113.618.0
Percentage of Revenues0.3-1.22.41.11.00.42.31.10.60.31.50.90.8
Percentage of Revenues srt:AsiaPacific0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EMEA


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.2470.3370.7640.8530.8050.5130.7980.8051.5610.3631.5411.2590.6690.619
Percentage of NetIncomeLoss21.49.113.610.710.228.115.28.923.26.6219.520.116.140.8
Percentage of Revenues1.90.30.70.70.70.50.80.71.40.41.61.30.70.7
Percentage of Revenues us-gaap:EMEA0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:ProfitLoss

us-gaap:ProfitLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value103.6535.6028.0447.8661.8245.2639.0546.7355.5280.7026.2783.68-0.2562.4882.5555.082.7383.1326.1046.3864.9655.2739.2846.5968.1338.946.668.536.8545.9969.8826.096
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues8.93.64.96.76.81.95.08.46.25.60.76.30.00.00.00.00.00.00.00.093.80.00.00.065.50.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


None
Period End2020-06-302020-03-312019-09-302019-06-30
Value0.007-0.0450.093-0.039
Percentage of ProfitLoss0.1-1.21.2-0.5
Percentage of Revenues0.0-0.00.1-0.0
Percentage of Revenues us-gaap:NoncontrollingInterest0.00.00.00.0

us-gaap:Parent


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value103.6987.9517.9041.824
Percentage of ProfitLoss99.9101.298.8100.5100.0
Percentage of Revenues8.93.66.76.91.9
Percentage of Revenues us-gaap:Parent0.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value103.6987.9517.9041.8249.0546.7355.528
Percentage of ProfitLoss99.9101.298.8100.5100.0100.0100.0100.0
Percentage of Revenues8.93.66.76.91.98.46.25.6
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

None

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value3.3043.3573.9043.3053.3993.143.1492.7713.2593.2653.6823.2352.9012.9723.3943.02.8922.712.4382.8982.9463.253.2733.2883.2183.0783.1012.9033.1232.9613.3312.812.7392.6842.8612.5882.5552.5212.9112.441
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-1972000.01516000.0-802000.02960000.0-2528000.04565000.0-1501000.0844000.0-277000.02787000.0-1144000.0-199000.0257000.01387000.0-1587000.01759000.0-1499000.01292000.0-5557000.0187000.04275000.0-1383000.01531000.0-76000.0-313000.0359000.0-956000.091000.0384000.01728000.0-1151000.0262000.0540000.0549000.0-3398000.0-279000.02125000.01372000.01056000.0-2060000.0
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value105.192-3.088-3.29716-0.391-12.9729.8764.962.635-6.039-0.049.146.144-2.4514.859-2.4842.368-0.9096.5220.304-2.952-2.979-0.2710.8674.818-5.8066.6023.8615.616-13.5073.4621.223.7780.385-1.799115.977-7.3288.719
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1.2993.4812.5642.7771.7382.3763.791-0.3685.4624.8182.797-0.05-2.0561.5173.5031.2663.242-1.657-0.6160.871.930.1132.8433.519-1.2790.6212.164-0.259-4.704-0.241-0.636-2.6911.3130.7245.1936.3150.7878.9022.9353.22
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-486000.01163000.0229000.0-791000.0-808000.096000.0794000.0-18000.0-308000.0-154000.02579000.0647000.0-501000.0-289000.03393000.0-329000.0-792000.0-23000.0975000.0-810000.0108000.0-1217000.0-1330000.0-810000.0130000.0313000.0588000.0-1213000.0-159000.0-321000.0-2868000.0583000.0-2192000.01550000.01469000.0-1467000.0-173000.0-517000.0-834000.01098000.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value612000.0976000.01052000.01388000.01028000.0928000.01935000.0584000.0986000.0731000.0868000.01047000.0579000.0561000.0439000.0421000.0143000.0363000.0794000.0-982000.0-53000.0489000.0754000.0143000.033000.0612000.0858000.0889000.0887000.0423000.0901000.0845000.0836000.0498000.0755000.0720000.0813000.0645000.0805000.0778000.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-5823000.0-5997000.0-7511000.0-9839000.0-18388000.0-13065000.0-2044000.0-1719000.0-3253000.0-7007000.0-2596000.0-2338000.0-8738000.0-4664000.0-4895000.0-5847000.0-5448000.0-2639000.0-549000.0-15615000.0-6171000.0-5939000.0-4223000.0-2443000.0-3071000.0-16389000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-5.0-5.8-6.6-8.3-16.0-13.4-1.9-1.6-3.0-7.1-2.7-2.40.00.0-71.90.00.00.0-5.40.00.00.00.00.00.00.0

None

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value5.8235.9977.5179.9679.5872.3962.2361.7192.8742.6993.4013.2782.3372.2173.0282.02145.5084.0452.0692.3682.2723.1783.0144.9676.5045.1735.0724.9065.8835.5032.6473.4519.4426.4095.9994.1462.3583.1862.482
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-5.0155.711-2.262-4.6871311-4.274-6.046-7.0178.286-3.891-6.89719-5.5341.827-5.8066.336-9.773-12.841-11.6473.84112-5.94-1.186.687-6.7295.429
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.35.6-2.0-3.911.811.5-4.1-5.6-6.48.4-4.0-6.90.00.00.0-85.30.00.00.0-115.60.00.00.00.00.00.00.0

None

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value1624221522331822142017139.57515131327151113131215141529241515181814122429
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfLongTermDebt dei:LegalEntity, us-gaap:ShortTermDebtType

plpc:AustrianSubsidiary, us-gaap:LineOfCredit


None
Period End2020-03-312019-12-31
Value0.50.0
Percentage of ProceedsFromIssuanceOfLongTermDebt2.00.0

us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:ShortTermDebtType, dei:LegalEntity

us-gaap:LineOfCredit, plpc:AustrianSubsidiary


None
Period End2020-06-26
Value0.6
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0

None

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value191722158.2271726262111151718131513171111121313151613102613181123640.1480.1580.1080.2070.7250.1990.141-9.147
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value998000.01175000.01004000.01006000.01177000.01043000.0967000.01056000.01057000.01008000.0950000.01057000.01055000.01037000.01039000.01029000.01046000.01056000.01215000.0845000.01221000.01110000.01100000.01107000.01098000.01107000.01104000.01103000.098000.003187000.01105000.01105000.01095000.01095000.01097000.01102000.01087000.01085000.01092000.0
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value3011000.01602000.0403000.0702000.01456000.0239000.036000.045000.00110000.00-236000.0238000.00193000.0883000.01405000.0627000.03625000.02174000.0130000.074000.00104000.000-367000.0356000.02758000.0134000.0696000.01899000.0102000.093000.001004000.001060000.0
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0

None

us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity, us-gaap:ShortTermDebtType

us-gaap:DebtInstrumentInterestRateStatedPercentage

plpc:AustrianSubsidiary, us-gaap:LineOfCredit


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.0140.0140.0140.0120.02
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations plpc:AustrianSubsidiary us-gaap:LineOfCredit0.00.00.00.00.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:ShortTermDebtType, dei:LegalEntity

us-gaap:LineOfCredit, plpc:AustrianSubsidiary


None
Period End2020-06-26
Value0.01315
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations us-gaap:LineOfCredit plpc:AustrianSubsidiary0.0

None

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value0.250.280.290.280.05-0.150.270.280.360.340.280.270.270.270.90.18-3.340.520.330.340.290.40.280.310.330.330.350.34
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value081086.0002191.071324.000071277.000090807.000089142.015000.00057000.000045475.000053446.000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0100.00.00.0100.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0100.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

plpc:PerformanceAndServiceRequired


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value071539.0002191.063201.000063122.000080247.000079241.000050927.000040676.000047832.000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.088.20.00.0100.088.60.00.00.088.60.00.00.088.40.00.00.088.90.00.00.089.30.00.00.089.40.00.00.089.50.00.0

plpc:ServiceRequired


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value09547.00008123.00008155.000010560.00009901.015000.0006073.00004799.00005614.000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.011.80.00.00.011.40.00.00.011.40.00.00.011.60.00.00.011.1100.00.00.010.70.00.00.010.60.00.00.010.50.00.0

None

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value36343941414343344146453929323232
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1.8113.3371.123-2.0561.885-1.3075.3151.0761.1190.9360.289-0.8280.697-0.6951.023-0.509-0.0140.351-0.629-1.0290.6390.2440.7530.742-2.2541.70.610.53-0.095-0.123-0.4742.842-9.2655.16314-3.712.1437.847-5.7310
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plpc:DeferredCompensationArrangementWithIndividualCompensationExpenseIncome us-gaap:AwardType

plpc:DeferredCompensationArrangementWithIndividualCompensationExpenseIncome

plpc:PerformanceBasedRestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value500000.0800000.01000000.01200000.0900000.0800000.01000000.01300000.0700000.0700000.0900000.0900000.0400000.0400000.0300000.0300000.0100000.0300000.01800000.0-1000000.0-200000.0400000.0
Percentage of DeferredCompensationArrangementWithIndividualCompensationExpenseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plpc:PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax

plpc:PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.01.001.01.01.001.01.01.0
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax100.0100.00.0100.0100.0100.00.0100.0100.0100.0

plpc:PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

plpc:Communications


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.230.24-0.020.230.250.22-0.010.260.190.21
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax23.024.00.023.025.022.00.026.019.021.0

plpc:SpecialIndustries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.090.1-0.010.110.130.130.010.130.130.09
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax9.010.00.011.013.013.00.013.013.09.0

us-gaap:EnergyService


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.680.660.030.660.620.6500.610.680.7
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax68.066.00.066.062.065.00.061.068.070.0

plpc:PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:StatementGeographical

plpc:Communications, plpc:PlpUsa


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.300.3-0.01-0.01-0.010.37
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax30.00.030.00.0-1.0-1.037.0

plpc:Communications, srt:Americas


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.18-0.020.290.030.070.010.18
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax18.0-2.029.00.07.01.018.0

plpc:Communications, srt:AsiaPacific


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.04-0.010.10-0.0100.05
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax4.0-1.010.00.0-1.00.05.0

plpc:Communications, us-gaap:EMEA


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.330.030.32-0.010.07-0.020.08
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax33.03.032.00.07.0-2.08.0

plpc:SpecialIndustries, plpc:PlpUsa


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.050.010.07000.010.05
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax5.01.07.00.00.01.05.0

plpc:SpecialIndustries, srt:Americas


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.04-0.020.05000.010.03
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax4.0-2.05.00.00.01.03.0

plpc:SpecialIndustries, srt:AsiaPacific


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.22-0.030.240.040.030.010.2
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax22.0-3.024.00.03.01.020.0

plpc:SpecialIndustries, us-gaap:EMEA


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.07-0.010.20.01-0.020.020.14
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax7.0-1.020.00.0-2.02.014.0

us-gaap:EnergyService, plpc:PlpUsa


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.65-0.010.630.010.0100.58
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax65.0-1.063.00.01.00.058.0

us-gaap:EnergyService, srt:Americas


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.780.040.66-0.03-0.07-0.020.79
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax78.04.066.00.0-7.0-2.079.0

us-gaap:EnergyService, srt:AsiaPacific


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.740.040.66-0.04-0.02-0.010.75
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax74.04.066.00.0-2.0-1.075.0

us-gaap:EnergyService, us-gaap:EMEA


None
Period End2020-06-302019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.6-0.020.480-0.0500.78
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax60.0-2.048.00.0-5.00.078.0

plpc:PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

plpc:PlpUsa


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.01.001.01.01.001.01.01.0
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax100.0100.00.0100.0100.0100.00.0100.0100.0100.0

srt:Americas


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.01.001.01.01.001.01.01.0
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax100.0100.00.0100.0100.0100.00.0100.0100.0100.0

srt:AsiaPacific


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.01.001.01.01.001.01.01.0
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:EMEA


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.01.001.01.01.001.01.01.0
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax100.0100.00.0100.0100.0100.00.0100.0100.0100.0

plpc:PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical, us-gaap:ProductOrService

plpc:PlpUsa, plpc:Communications


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.30.290.30.30.330.36
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax30.029.030.030.033.036.0

plpc:PlpUsa, plpc:SpecialIndustries


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.060.080.070.060.070.07
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax6.08.07.06.07.07.0

plpc:PlpUsa, us-gaap:EnergyService


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.640.630.630.640.60.57
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax64.063.063.064.060.057.0

srt:Americas, plpc:Communications


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.220.260.290.340.440.19
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax22.026.029.034.044.019.0

srt:Americas, plpc:SpecialIndustries


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.070.020.050.070.050.04
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax7.02.05.07.05.04.0

srt:Americas, us-gaap:EnergyService


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.710.720.660.590.510.77
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax71.072.066.059.051.077.0

srt:AsiaPacific, plpc:Communications


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.040.050.10.060.040.04
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax4.05.010.06.04.04.0

srt:AsiaPacific, plpc:SpecialIndustries


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.220.20.240.310.280.26
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax22.020.024.031.028.026.0

srt:AsiaPacific, us-gaap:EnergyService


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.740.750.660.630.680.7
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax74.075.066.063.068.070.0

us-gaap:EMEA, plpc:Communications


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.30.340.320.140.250.06
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax30.034.032.014.025.06.0

us-gaap:EMEA, plpc:SpecialIndustries


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.080.120.20.090.120.19
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax8.012.020.09.012.019.0

us-gaap:EMEA, us-gaap:EnergyService


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.620.540.480.770.630.75
Percentage of PercentageOfRevenueFromContractWithCustomerExcludingAssessedTax62.054.048.077.063.075.0

plpc:ProvisionForRecoveryOfDoubtfulAccounts

plpc:ProvisionForRecoveryOfDoubtfulAccounts


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value254000.0424000.0805000.0590000.0297000.0440000.0353000.0278000.0374000.0201000.0239000.0149000.0490000.0287000.01486000.0566000.0142000.0-10000.0548000.093000.0274000.046000.0
Percentage of ProvisionForRecoveryOfDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plpc:RepurchaseOfCommonStockFromRelatedParty

plpc:RepurchaseOfCommonStockFromRelatedParty


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value02378000.01922000.049000.002055000.03000.02266000.0982000.0723000.06987000.01486000.0-105000.0107000.0474000.01455000.0033000.0335000.01075000.00140000.001869000.00261000.02857000.001173000.00
Percentage of RepurchaseOfCommonStockFromRelatedParty0.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.00.0100.00.0100.0100.00.0100.00.0

plpc:ResearchAndEngineeringExpense

plpc:ResearchAndEngineeringExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value4.1134.2964.3784.244.4284.144.0943.7063.6463.6613.5063.523.6123.693.2473.4333.6093.7383.5593.7453.8643.7213.9454.3994.1833.7753.6533.7143.5713.774.1523.8933.7473.655
Percentage of ResearchAndEngineeringExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plpc:StockIssuedDuringPeriodSharesSharesHeldInEmployeeTrust us-gaap:StatementEquityComponents

plpc:StockIssuedDuringPeriodSharesSharesHeldInEmployeeTrust

plpc:CommonSharesIssuedToRabbiTrust


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value603.03358.03219.0525.0705.0272.019780.0112.0
Percentage of StockIssuedDuringPeriodSharesSharesHeldInEmployeeTrust100.0100.0100.0100.0100.0100.0100.0100.0

plpc:DeferredCompensationLiability


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value603.03358.03219.0525.0705.0272.019780.0112.0
Percentage of StockIssuedDuringPeriodSharesSharesHeldInEmployeeTrust100.0100.0100.0100.0100.0100.0100.0100.0

plpc:StockIssuedDuringPeriodValueSharesHeldInEmployeeTrust us-gaap:StatementEquityComponents

plpc:StockIssuedDuringPeriodValueSharesHeldInEmployeeTrust

plpc:CommonSharesIssuedToRabbiTrust


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value30000.0-101000.0-85000.028000.030000.020000.0-861000.015000.0
Percentage of StockIssuedDuringPeriodValueSharesHeldInEmployeeTrust100.0100.0100.0100.0100.0100.0100.0100.0

plpc:DeferredCompensationLiability


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-30000.0101000.085000.0-28000.0-30000.0-20000.0861000.0-15000.0
Percentage of StockIssuedDuringPeriodValueSharesHeldInEmployeeTrust-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-130000.0-129000.0-130000.0-140000.0-125000.0-125000.0-132000.0-151000.0-121000.0-121000.0-144000.0-80000.0-131000.0-116000.0-130000.0-146000.0-123000.0-123000.0-147000.0-158000.0-139000.0-139000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanContributionsByEmployer us-gaap:StatementScenario

us-gaap:DefinedBenefitPlanContributionsByEmployer

srt:ScenarioForecast


None
Period End2020-09-30
Value300000.0
Percentage of DefinedBenefitPlanContributionsByEmployer100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value556000.0557000.0487000.0483000.0488000.0488000.0382000.0612000.0496000.0496000.0476000.0476000.0476000.0475000.0455000.0470000.0449000.0450000.0463000.0456000.0465000.0465000.0448000.0448000.0447000.0449000.0359000.0359000.0351000.0367000.0296000.0297000.0295000.0298000.0272000.0273000.0272000.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanInterestCost


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value326000.0327000.0353000.0350000.0354000.0354000.0337000.0346000.0333000.0333000.0364000.0363000.0363000.0365000.0366000.0370000.0364000.0365000.0359000.0361000.0358000.0358000.0341000.0340000.0341000.0340000.0313000.0313000.0314000.0311000.0353000.0353000.0361000.0344000.0344000.0343000.0359000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-10000.0-10000.070000.0137000.039000.038000.0149000.0-93000.042000.042000.095000.032000.090000.062000.092000.088000.093000.093000.090000.0151000.059000.059000.0-73000.0-75000.0-65000.0-83000.0132000.0133000.0159000.0106000.0570000.0568000.0616000.0521000.0425000.0424000.0482000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DefinedBenefitPlanServiceCost


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value90000.091000.074000.0130000.048000.047000.062000.022000.084000.084000.063000.065000.072000.056000.051000.042000.055000.055000.047000.088000.027000.027000.030000.029000.036000.023000.055000.056000.074000.037000.0325000.0325000.0351000.0299000.0250000.0251000.0272000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value996000.01046000.01002000.01004000.01176000.01032000.01007000.01009000.0
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital


None
Period End2020-03-312019-03-312018-06-30
Value83000.0165000.0913000.0
Percentage of DividendsCommonStockCash7.914.090.7

us-gaap:Parent


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value996000.01046000.01002000.01004000.01176000.0
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value996000.0963000.01002000.01004000.01011000.01032000.01007000.01009000.0
Percentage of DividendsCommonStockCash100.092.1100.0100.086.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value988000.0-1805000.01003000.0-408000.0-2662000.01292000.0-22000.01001000.0-3509000.0939000.0-982000.0699000.0596000.01046000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-03-312015-12-312015-09-302015-06-302013-12-312013-09-30
Value0.210.2100.210.210.2100.210.210.2100.350.350.350.3500.350.3500.35
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.00.0100.0

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value3000.02000.02000.03000.03000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeaseInterestPaymentOnLiability


None
Period End2020-03-312019-03-31
Value730000.0702000.0
Percentage of FinanceLeaseInterestPaymentOnLiability100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value28000.029000.023000.026000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value16000.016000.017000.016000.018000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax


None
Period End2020-06-30
Value-300000.0
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302011-09-30
Value0-57000.047000.0-33000.033000.09000.048000.068000.031000.0-138000.0-35000.06000.07000.022000.0-13000.0-37000.048000.01000.0-36000.0075000.08000.0-2000.086000.0
Percentage of GainLossOnSaleOfPropertyPlantEquipment0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-30
Value1234000.0-2026000.0840000.0-666000.0-197000.0110000.0-261000.015000.0-755000.078000.0-145000.0211000.0333000.0376000.01196000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss us-gaap:StatementGeographical

srt:Americas


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value128000.0-316000.060000.0-34000.078000.057000.0-191000.0101000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss10.415.67.15.1-39.651.873.2673.3

srt:AsiaPacific


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value692000.0-941000.0374000.0-332000.0-136000.065000.0-30000.0-103000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss56.146.444.549.869.059.111.5-686.7

us-gaap:EMEA


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-30
Value414000.0-769000.0406000.0-300000.0-139000.0-12000.0-40000.017000.0-184000.067000.079000.0-8000.051000.086000.050000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss33.538.048.345.070.6-10.915.3113.324.485.9-54.5-3.815.322.94.2

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value6.822-2.112-5.5042.8267.2841.481-5.8225.1386.844-3.112-4.1156.8122.245-0.21-6.2828.6743.218-2.331-1.7544.7076.818-4.1190.146.8782.45-2.752-7.428-1.0554.3710.206-11.7-0.17.6870.917-4.5145.576.1451.373-1.5715.554
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value423000.0-328000.0-1246000.01669000.0986000.0-775000.0-1170000.0-3031000.0572000.01733000.03810000.0610000.0717000.01997000.0-4664000.01360000.0-1499000.0-196000.0-2342000.01187000.0-877000.0-2006000.0-1290000.0940000.0-586000.054000.0483000.0-643000.0-1724000.0-2786000.03740000.0176000.01109000.0-1644000.0-5679000.02109000.01034000.01721000.0554000.0456000.0
Percentage of IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryLIFOReserveEffectOnIncomeNet

us-gaap:InventoryLIFOReserveEffectOnIncomeNet


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-30
Value0200000.0100000.00300000.0600000.0200000.0200000.0100000.0-100000.0-100000.0-200000.0-500000.0400000.0-400000.0100000.0100000.0200000.0-100000.0100000.0-100000.0200000.0
Percentage of InventoryLIFOReserveEffectOnIncomeNet0.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryLIFOReserveEffectOnIncomeNet us-gaap:Range

srt:Maximum


None
Period End2020-06-30
Value100000.0
Percentage of InventoryLIFOReserveEffectOnIncomeNet0.0

us-gaap:InventoryWriteDown

us-gaap:InventoryWriteDown


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value636000.0365000.0-5000.0393000.0808000.087000.0674000.0273000.0586000.0869000.0-41000.0524000.0265000.0457000.01430000.0442000.0855000.09000.01472000.0221000.0576000.0208000.01006000.0457000.0154000.0627000.0641000.01549000.0317000.0165000.0
Percentage of InventoryWriteDown100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value79000.0111000.0170000.0211000.0223000.0179000.0146000.0111000.0134000.095000.0105000.062000.0160000.0104000.085000.063000.068000.075000.074000.0103000.0112000.0102000.0138000.0138000.098000.0109000.0164000.0204000.0134000.0116000.0172000.0160000.0179000.0137000.0153000.0131000.0140000.0151000.0113000.084000.094000.0
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value752000.0727000.0878000.0833000.0686000.0
Percentage of LeaseCost100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value733000.0709000.0859000.0814000.0665000.0
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


None
Period End2020-03-312019-03-31
Value2000.03000.0
Percentage of OperatingLeasePayments100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.472-16.8815.472-5.8971.11.353-2.187-0.563-13.3673.832
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedTranslationAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.472-16.8815.472-5.8971.11.353-2.187-0.563-13.3673.832
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-91000.0-98000.0-103000.0-108000.0-93000.0-93000.0-87000.0-116000.0-92000.0-91000.0-64000.0-50000.0-83000.0-72000.0-82000.0-91000.0-76000.0-77000.0-91000.0-99000.0-88000.0-86000.017000.0-2000.0-3000.0-2000.0-76000.0-77000.0-76000.0-77000.0-116000.0-117000.0-124000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-91000.0-98000.0-108000.0-93000.0-93000.0-116000.0-92000.0-91000.0-64000.0-50000.0-83000.0-72000.0-82000.0-91000.0-76000.0-77000.0-91000.0-99000.0-88000.0-86000.017000.0-2000.0-3000.0-2000.0-76000.0-77000.0-76000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Parent


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value-91000.0-98000.0-108000.0-93000.0-93000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value39000.031000.0-218000.032000.031000.032000.0-233000.035000.029000.030000.0-318000.030000.049000.044000.0-343000.055000.046000.046000.0-383000.059000.052000.052000.01000.02000.02000.01000.047000.046000.046000.047000.071000.071000.075000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-39000.0-31000.0-32000.0-31000.0-32000.0-35000.0-29000.0-30000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-34000.0364000.0-327000.0102000.0-204000.0137000.0-40000.0-98000.0129000.0-183000.0131000.0-68000.0-83000.0-193000.0-126000.01000.0-403000.0-9000.0304000.0-275000.0-91000.0-5000.0-26000.01000.034000.0-35000.045000.04000.06000.01000.0119000.04000.05000.09000.0-1000.0-14000.0-127000.069000.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:OtherOperatingIncomeExpenseNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value225000.0-1122000.0-919000.0-775000.0-325000.0-348000.0516000.0-1150000.0-1465000.0-335000.0-304000.0-206000.0-369000.0-104000.0-737000.0-196000.027000.0853000.0-343000.0-4425000.0-252000.0-3731000.0-2564000.0-3324000.0495000.0203000.0-1311000.0-419000.0-2071000.0-121000.0-992000.0677000.0
Percentage of OtherOperatingIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value0.00.00.0-0.088.801100.00.00.00.00.00.00.00.00.00.2350.817130.00.00.00.00.00.0-1.0036.1760.00.0
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired0.00.00.0100.0100.0100.00.00.00.00.00.00.00.00.00.0100.0100.0100.00.00.00.00.00.00.0100.0100.00.00.0

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PaymentsToAcquireMarketableSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value00000496000.000382000.04308000.00000
Percentage of PaymentsToAcquireMarketableSecurities0.00.00.00.00.0100.00.00.0100.0100.00.00.00.00.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value30000.0236000.0184000.029000.000-924000.0894000.01962000.00-130000.0268000.0110000.00020000.020000.040000.0-1000.042000.020000.0105000.0352000.0272000.0875000.020000.0225000.0179000.0121000.024000.041000.065000.0879000.079000.0196000.05000.0
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.00.00.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromLongTermLinesOfCredit dei:LegalEntity

us-gaap:ProceedsFromLongTermLinesOfCredit

plpc:AustralianSubsidiary


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value700000.04500000.0-200000.0-600000.0-100000.06400000.0
Percentage of ProceedsFromLongTermLinesOfCredit100.0100.0100.0100.0100.0100.0

plpc:PolishSubsidiary


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value200000.06000000.01800000.02500000.01300000.0900000.0
Percentage of ProceedsFromLongTermLinesOfCredit28.6133.3-900.0-416.7-1300.014.1

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312014-03-312013-12-312013-09-302013-06-30
Value-91000.0-98000.0-103000.0-108000.0-93000.0-93000.0-87000.0-116000.0-92000.0-91000.0-64000.0-50000.0-83000.0-72000.0-2000.0-76000.0-77000.0-76000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312014-03-312013-12-312013-09-302013-06-30
Value-91000.0-98000.0-103000.0-108000.0-93000.0-93000.0-87000.0-116000.0-92000.0-91000.0-64000.0-50000.0-83000.0-72000.0-2000.0-76000.0-77000.0-76000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value13814.000007821.000030793.00012304.0040676.000047832.00003537.000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.00.00.00.00.0100.00.00.00.0100.00.00.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType

plpc:PerformanceAndServiceRequired


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value11051.000006753.000030793.0009843.0040676.000047832.00003537.000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod80.00.00.00.00.086.30.00.00.0100.00.00.080.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.00.00.00.00.00.0

plpc:ServiceRequired


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value2763.000001068.00000002461.0000000000000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod20.00.00.00.00.013.70.00.00.00.00.00.020.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value073053.07769.00077213.09071.00019277.05859.00004799.000020614.000042678.000068369.000074276.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod0.0100.0100.00.00.0100.0100.00.00.0100.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:AwardType

plpc:PerformanceAndServiceRequired


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value073053.000075921.000019277.000000000000038090.000061594.000066973.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod0.0100.00.00.00.098.30.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.089.20.00.00.090.10.00.00.090.20.0

plpc:ServiceRequired


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value007769.0001292.09071.00005859.00004799.000020614.00004588.00006775.00007303.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod0.00.0100.00.00.01.7100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.010.80.00.00.09.90.00.00.09.80.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

plpc:LongTermIncentivePlanStockOption


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value25500.005000.00005000.0000005000.0000008500.02000.00013500.05000.0017000.00000008000.0014500.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.00.0100.00.00.00.0100.00.00.00.00.00.0100.00.00.00.00.00.0100.0100.00.00.0100.0100.00.0100.00.00.00.00.00.00.0100.00.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:PlanName, us-gaap:Vesting

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

plpc:LongTermIncentivePlanAndTwoThousandSixteenIncentivePlan, us-gaap:ShareBasedCompensationAwardTrancheOne


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value00.50000.5
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.00.00.00.0100.0

plpc:LongTermIncentivePlanAndTwoThousandSixteenIncentivePlan, us-gaap:ShareBasedCompensationAwardTrancheThree


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value01.00001.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0200.00.00.00.0200.0

plpc:LongTermIncentivePlanAndTwoThousandSixteenIncentivePlan, us-gaap:ShareBasedCompensationAwardTrancheTwo


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value00.750000.75
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0150.00.00.00.0150.0

us-gaap:StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss us-gaap:ValuationAllowancesAndReservesType

us-gaap:StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss

us-gaap:WarrantyReserves


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value65000.0-152000.0263000.0-47000.0-8000.09000.0-38000.0-6000.0-72000.04000.0-12000.019000.032000.031000.015000.039000.0-30000.012000.0-14000.0152000.0
Percentage of StandardProductWarrantyAccrualForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StandardProductWarrantyAccrualPayments us-gaap:ValuationAllowancesAndReservesType

us-gaap:StandardProductWarrantyAccrualPayments

us-gaap:WarrantyReserves


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value028000.024000.0288000.0-38000.043000.0-23000.013000.0127000.016000.0-34000.0315000.015000.0103000.0210000.031000.0-13000.041000.019000.0032000.0107000.030000.028000.075000.00118000.0139000.061000.0157000.0334000.0
Percentage of StandardProductWarrantyAccrualPayments0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:StandardProductWarrantyAccrualWarrantiesIssued us-gaap:ValuationAllowancesAndReservesType

us-gaap:StandardProductWarrantyAccrualWarrantiesIssued

us-gaap:WarrantyReserves


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value10000.038000.0186000.0502000.04000.089000.06000.08000.0175000.0171000.027000.0113000.0307000.03000.057000.0-25000.010000.032000.0-250000.050000.057000.098000.0688000.0-486000.0241000.002393000.0
Percentage of StandardProductWarrantyAccrualWarrantiesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodSharesNewIssues us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value603.077381.01262.0525.078821.0272.01730.021458.0
Percentage of StockIssuedDuringPeriodSharesNewIssues100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockIncludingAdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value603.077381.01262.0525.078821.0272.01730.021458.0
Percentage of StockIssuedDuringPeriodSharesNewIssues100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap:PlanName

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

plpc:LongTermIncentivePlanStockOption


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value004000.000002000.01500.0028500.0000-500.01000.00000000001250.01500.03500.09250.0000
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised0.00.0100.00.00.00.00.0100.0100.00.0100.00.00.00.0100.0100.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.00.00.00.0

us-gaap:TreasuryStockSharesAcquired us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:TreasuryStockSharesAcquired

plpc:CurrentOfficersAndRetiredOfficer


None
Period End2020-02-052019-02-062018-08-072018-02-06
Value39208.036413.017141.07877.0
Percentage of TreasuryStockSharesAcquired100.0100.0100.0100.0

us-gaap:TreasuryStockSharesAcquired us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value60608.075246.015150.029724.040891.027141.013500.010907.0
Percentage of TreasuryStockSharesAcquired0.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value3011000.03980000.0751000.01456000.02294000.02313000.0981000.0833000.0
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:Parent


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value3011000.03980000.0751000.01456000.02294000.0
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value3011000.03980000.0751000.01456000.02294000.02313000.0981000.0833000.0
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value7000.09000.095000.09000.09000.0113000.020000.018000.016000.011000.012000.023000.022000.018000.016000.01000.004000.04000.039000.088.082.080.0112000.0109000.0104.0128000.0130000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plpc:DeferredCompensationLiability

plpc:DeferredCompensationLiability


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value10101010111111111011111212121212121212111111119.1969.1769.1569.3066.5776.5576.5176.5223.8673.8473.8073.8121.281.2
Percentage of DeferredCompensationLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plpc:DeferredCompensationLiabilityFairValue

plpc:DeferredCompensationLiabilityFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5848000.05326000.06059000.05334000.05316000.05273000.04946000.04759000.04632000.04266000.0
Percentage of DeferredCompensationLiabilityFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plpc:DeferredCompensationLiabilityFairValue us-gaap:DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensation

us-gaap:DeferredProfitSharing


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5800000.05300000.06100000.05300000.05300000.05300000.04900000.04800000.04600000.04700000.04800000.0
Percentage of DeferredCompensationLiabilityFairValue99.299.5100.799.499.7100.599.1100.999.3110.20.0

plpc:DeferredCompensationLiabilityFairValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5848000.05326000.06059000.05334000.05316000.05273000.04946000.04759000.04632000.04266000.0
Percentage of DeferredCompensationLiabilityFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plpc:PrepaidExpenseCurrentExcludingTax

plpc:PrepaidExpenseCurrentExcludingTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value6518000.06255000.06921000.06821000.07299000.07664000.06205000.06756000.05369000.05274000.03434000.04814000.04040000.04248000.03353000.04433000.04686000.05047000.04030000.0
Percentage of PrepaidExpenseCurrentExcludingTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

plpc:StockRepurchasedDuringPeriodPricePerShare us-gaap:RelatedPartyTransactionsByRelatedParty

plpc:StockRepurchasedDuringPeriodPricePerShare

plpc:CurrentOfficersAndRetiredOfficer


None
Period End2020-02-052019-02-062018-08-072018-02-06
Value58.6556.4487.1980.2
Percentage of StockRepurchasedDuringPeriodPricePerShare100.0100.0100.0100.0

us-gaap:AccountsPayableTradeCurrent

us-gaap:AccountsPayableTradeCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3028282828252629282725242423212620212022231922242322212326242124262625272727
Percentage of AccountsPayableTradeCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesAndOtherLiabilities

us-gaap:AccruedLiabilitiesAndOtherLiabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value1313161719171213121314171314121313131313
Percentage of AccruedLiabilitiesAndOtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3340000.03326000.03849000.03845000.03753000.03536000.03178000.03289000.03144000.03302000.03325000.03440000.03221000.03276000.03210000.03149000.02485000.02469000.02326000.02135000.02499000.02383000.02370000.02317000.02341000.02100000.02136000.02032000.01944000.01865000.02039000.02211000.01887000.01674000.01627000.01816000.01639000.01213000.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


None
Period End2020-06-302020-03-312019-03-312018-12-312018-09-302018-06-302018-03-31
Value382000.0456000.02281000.01648000.01782000.01737000.04308000.0
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


None
Period End2020-06-302020-03-312019-03-312018-12-312018-09-302018-06-302018-03-31
Value002281000.01648000.01782000.01737000.04308000.0
Percentage of AssetsFairValueDisclosure0.00.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-03-312018-12-312018-09-302018-06-302018-03-31
Value382000.0456000.000000
Percentage of AssetsFairValueDisclosure100.0100.00.00.00.00.00.0

us-gaap:CommonStockSharesHeldInEmployeeTrust

us-gaap:CommonStockSharesHeldInEmployeeTrust


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value10101010111111111011111212121212121212111111119.1969.1769.1569.3066.5776.5576.5176.5223.8673.8473.8073.8121.281.261.2
Percentage of CommonStockSharesHeldInEmployeeTrust100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesHeldInEmployeeTrustShares

us-gaap:CommonStockSharesHeldInEmployeeTrustShares


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value264890.0264280.0267640.0267640.0270860.0270340.0269630.0269630.0269360.0289140.0289030.0298160.0297840.0297280.0184790.0184510.0183930.0184040.0109040.0
Percentage of CommonStockSharesHeldInEmployeeTrustShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContingentConsiderationClassifiedAsEquityFairValueDisclosure

us-gaap:ContingentConsiderationClassifiedAsEquityFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-31
Value196000.0192000.0581000.0
Percentage of ContingentConsiderationClassifiedAsEquityFairValueDisclosure100.0100.0100.0

us-gaap:ContingentConsiderationClassifiedAsEquityFairValueDisclosure us-gaap:BalanceSheetLocation

us-gaap:OtherNoncurrentLiabilities


None
Period End2020-06-302020-03-312019-12-31
Value200000.0200000.0600000.0
Percentage of ContingentConsiderationClassifiedAsEquityFairValueDisclosure102.0104.2103.3

us-gaap:ContingentConsiderationClassifiedAsEquityFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel3


None
Period End2020-06-302020-03-312019-12-31
Value196000.0192000.0581000.0
Percentage of ContingentConsiderationClassifiedAsEquityFairValueDisclosure100.0100.0100.0

us-gaap:DeferredCompensationLiabilityCurrent

us-gaap:DeferredCompensationLiabilityCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4443000.02447000.07213000.05959000.04312000.02903000.06982000.06055000.04195000.02718000.06284000.05578000.04000000.02703000.06251000.05643000.04028000.03019000.05648000.05082000.03886000.02521000.05151000.05161000.03818000.02332000.05086000.04842000.03599000.02656000.05387000.05211000.04231000.02699000.04686000.04558000.03386000.04464000.0
Percentage of DeferredCompensationLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


None
Period End2020-06-302019-12-31
Value6275000.07564000.0
Percentage of DeferredIncomeTaxAssetsNet100.0100.0

us-gaap:DeferredTaxAssetsNetNoncurrent

us-gaap:DeferredTaxAssetsNetNoncurrent


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value6.0947.5648.227.4626.7376.97.838.0237.9087.774101010101313125.2996.6567.227.0445.7734.1844.063.9223.4166.9896.6246.7826.0696.2365.9755.8135.5854.0323.7923.615
Percentage of DeferredTaxAssetsNetNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value15111114141111141311111312101012119.4819.3061210109.87614121110151413121715141116149.848
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value16151514141413131313131312121212111111101111109.979109.959.4699.1728.7398.4178.0077.6567.2246.429
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value7.6487.267.3296.9286.7756.66.4156.256.1336.0775.8815.7745.5855.4035.2175.1154.8964.6974.5014.2654.1754.073.9313.6873.5653.3323.0862.9242.692.5082.2792.1291.9141.551
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization47.246.647.246.746.746.245.945.445.144.844.444.043.643.142.542.241.440.840.139.236.736.235.836.934.333.532.631.930.829.828.527.826.524.1

us-gaap:Patents


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value4.8064.8064.8064.8064.8064.8064.7884.7914.8024.8024.7914.7914.814.7954.7994.8024.8024.7994.7994.7994.8014.8014.734.6574.5834.514.4344.364.2854.2094.1354.063.9863.836
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization29.730.930.932.433.133.734.234.835.335.436.136.537.538.339.139.640.641.642.744.142.242.743.146.744.245.346.847.549.050.051.653.055.259.7

us-gaap:TechnologyBasedIntangibleAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.9541.7761.7081.5391.4391.3811.3341.2961.2631.271.215
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization12.111.411.010.49.99.79.59.49.39.49.2

us-gaap:Trademarks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value1.3661.2911.3581.2941.2971.2811.2471.2191.191.2051.1661.1461.1161.0561.0391.0160.9760.9340.8990.8470.814
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization8.48.38.78.78.99.08.98.98.88.98.88.78.78.48.58.48.38.18.07.87.4

us-gaap:UseRights


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value0.4330.4320.3310.2580.2030.2030.2030.2030.2030.2030.2010.1990.190.1840.180.1870.1790.1820.1730.1720.1710.1660.1640.1640.1640.1550.1530.1420.1340.1280.1250.1170.1090.097
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization2.72.82.11.71.41.41.51.51.51.51.51.51.51.51.51.51.51.61.51.61.51.51.51.61.61.61.61.51.51.51.61.51.51.5

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsGross


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value29293030272222222223232323232223232222222324252426262121212222212117
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value1514151514111111111212121212121212121111121213131413101010101010108.45
Percentage of FiniteLivedIntangibleAssetsGross51.651.351.652.252.452.752.652.852.852.953.153.353.453.153.153.353.452.852.552.451.751.752.253.752.852.647.748.148.148.748.748.748.647.5

us-gaap:Patents


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value4.8064.8064.8064.8064.8064.8064.8064.8064.8064.8064.8064.8084.8174.8194.8164.8194.8184.8154.8154.8164.824.824.8234.8254.8264.8264.8244.8224.8214.8194.8194.8194.8194.819
Percentage of FiniteLivedIntangibleAssetsGross16.016.515.716.017.621.321.421.321.220.620.620.420.720.921.220.620.720.921.421.720.219.919.219.318.018.222.722.422.821.821.922.022.427.1

us-gaap:TechnologyBasedIntangibleAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6.9946.6877.1856.7675.3873.0222.9943.0163.0273.1743.149
Percentage of FiniteLivedIntangibleAssetsGross23.323.023.422.519.713.413.313.313.313.613.5

us-gaap:Trademarks


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value1.6531.5791.7181.6721.7121.7211.7071.7191.7161.7781.771.7981.7811.7441.7251.781.7581.751.7131.6671.888
Percentage of FiniteLivedIntangibleAssetsGross5.55.45.65.66.37.67.67.67.67.67.67.67.67.67.67.67.67.67.67.57.5

us-gaap:UseRights


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value1.0781.0781.1281.1241.1341.1451.1341.1341.1511.2461.1991.1731.071.1361.071.1511.1251.1791.1551.1841.2021.2021.2471.3021.3691.3561.381.3391.2911.2991.3221.2951.2571.259
Percentage of FiniteLivedIntangibleAssetsGross3.63.73.73.74.15.15.15.05.15.35.25.04.64.94.74.94.85.15.15.35.05.05.05.25.15.16.56.26.15.96.05.95.87.1

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure


None
Period End2020-06-302020-03-31
Value382000.0456000.0
Percentage of ForeignCurrencyContractAssetFairValueDisclosure100.0100.0

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-31
Value382000.0456000.0
Percentage of ForeignCurrencyContractAssetFairValueDisclosure100.0100.0

us-gaap:InventoryGross

us-gaap:InventoryGross


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value1031001041001019794909191868483858282817979838885909090918586879595979798
Percentage of InventoryGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryNoncurrent

us-gaap:InventoryNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value3307000.03218000.04456000.03614000.03956000.04980000.04289000.04175000.04748000.05010000.05224000.05385000.05375000.05111000.04953000.05857000.05595000.05632000.06118000.06319000.05508000.05284000.05513000.07034000.07852000.07703000.07350000.07404000.03874000.04420000.03957000.0-4353000.0-3549000.0-4054000.0
Percentage of InventoryNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterials

us-gaap:InventoryRawMaterials


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value50464948484543394242424142413739373534373836403836384043424646464546
Percentage of InventoryRawMaterials100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcess

us-gaap:InventoryWorkInProcess


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value8.919.279.352109.8889.378.8181110119.6099.7819.957109.0578.4878.0037.1216.9028.0538.988.9497.9648.2628.4578.6747.7797.77.4538.2257.949.0059.3499.196
Percentage of InventoryWorkInProcess100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LIFOInventoryAmount

us-gaap:LIFOInventoryAmount


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value30303230292829252624252627272829272626262626272525252525252730292828
Percentage of LIFOInventoryAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:LiabilitiesFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6044000.05518000.06640000.05334000.05316000.05273000.04946000.04759000.04632000.04266000.0
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5848000.05326000.06059000.05334000.05316000.05273000.04946000.04759000.04632000.04266000.0
Percentage of LiabilitiesFairValueDisclosure96.896.591.2100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel3


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value196000.0192000.0581000.00000000
Percentage of LiabilitiesFairValueDisclosure3.23.58.80.00.00.00.00.00.00.0

us-gaap:LineOfCredit

us-gaap:LineOfCredit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312015-12-31
Value3738333238311550
Percentage of LineOfCredit100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCredit dei:LegalEntity

plpc:IndonesianSubsidiary


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value7.17.37.57.77.9
Percentage of LineOfCredit18.919.022.324.020.7

plpc:NewZealandSubsidiary


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value4.94.65.45.2
Percentage of LineOfCredit13.111.916.116.2

us-gaap:LineOfCreditFacilityInterestRateAtPeriodEnd dei:LegalEntity

us-gaap:LineOfCreditFacilityInterestRateAtPeriodEnd

plpc:AustralianSubsidiary


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.012250.019550.01960.021550.025150.02975
Percentage of LineOfCreditFacilityInterestRateAtPeriodEnd100.0100.0100.0100.0100.0100.0

plpc:PolishSubsidiary


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.013650.027550.02760.027650.027650.027650.02770.027650.027650.02765
Percentage of LineOfCreditFacilityInterestRateAtPeriodEnd111.4140.9140.8128.3109.992.90.00.00.00.0

us-gaap:LineOfCreditFacilityInterestRateAtPeriodEnd us-gaap:StatementGeographical

country:US


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.012870.021180.02890.031410.035230.03620.03630.033860.032150.03008
Percentage of LineOfCreditFacilityInterestRateAtPeriodEnd105.1108.3147.4145.8140.1121.70.00.00.00.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:SubsequentEventType

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:SubsequentEvent


None
Period End2020-04-17
Value65
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

us-gaap:LinesOfCreditCurrent dei:LegalEntity

us-gaap:LinesOfCreditCurrent

plpc:NewZealandSubsidiary


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value500000.0400000.0500000.0500000.0
Percentage of LinesOfCreditCurrent100.0100.0100.0100.0

us-gaap:PrepaidTaxes

us-gaap:PrepaidTaxes


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1851000.03498000.02601000.02068000.02127000.04597000.03169000.01944000.02223000.03658000.05266000.04889000.05945000.06389000.08682000.05511000.06394000.06086000.05585000.04671000.05629000.03877000.02241000.03873000.04173000.04115000.03733000.03193000.03146000.03159000.02729000.02438000.02402000.01570000.01933000.01901000.02679000.02146000.0
Percentage of PrepaidTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCash us-gaap:StatementGeographical

us-gaap:RestrictedCash

srt:AsiaPacific


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value00300000.0300000.0300000.0300000.0300000.0300000.0300000.01200000.0
Percentage of RestrictedCash0.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashNoncurrent us-gaap:StatementGeographical

us-gaap:RestrictedCashNoncurrent

srt:AsiaPacific


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value00300000.0300000.0300000.0300000.0300000.01200000.01800000.0
Percentage of RestrictedCashNoncurrent0.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value205850.0219670.0211630.0219400.0219400.0217210.0230920.0239990.0239990.0239990.0218790.0224640.0224640.0236950.0146140.0191620.0191620.0191620.0102480.0155920.0155920.0155920.098921.0145140.0145140.0145140.099661.0168030.0168030.0168030.0114580.0188860.0188860.0142640.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

plpc:PerformanceAndServiceRequired


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value183780.0194830.0196340.0196340.0196340.0194150.0213620.0213620.0213620.0213620.0200570.0200570.0200570.0210420.0130170.0170840.0170840.0170840.091603.0139440.0139440.0139440.088508.0130140.0130140.0130140.089459.0151050.0151050.0151050.0103220.0170190.0170190.0128570.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber89.388.792.889.589.589.492.589.089.089.091.789.389.388.889.189.289.289.289.489.489.489.489.589.789.789.789.889.989.989.990.190.190.190.1

plpc:ServiceRequired


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value22076.024839.015292.023061.023061.023061.017298.026369.026369.026369.018214.024073.024073.026534.015974.020773.020773.020773.010872.016486.016486.016486.010413.015001.015001.015001.010202.016977.016977.016977.011363.018666.018666.014078.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber10.711.37.210.510.510.67.511.011.011.08.310.710.711.210.910.810.810.810.610.610.610.610.510.310.310.310.210.110.110.19.99.99.99.9

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value61.0961.153.6860.8660.8660.9853.6853.8953.8953.8952.6844.5344.5344.6438.4644.5144.5144.5153.8859.559.559.567.3665.2665.2665.2665.8655.3155.3155.3148.3343.3843.3837.75
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermBankLoansAndNotesPayable

us-gaap:ShortTermBankLoansAndNotesPayable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value12108.6967.3989.8467.7789.0423.7952.7221.8350.8640.5621.3790.6641.3150.3240.8260.8250.413
Percentage of ShortTermBankLoansAndNotesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StandardProductWarrantyAccrual us-gaap:ValuationAllowancesAndReservesType

us-gaap:StandardProductWarrantyAccrual

us-gaap:WarrantyReserves


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312010-12-31
Value1242000.01167000.01309000.01281000.01430000.0898000.0928000.0949000.0879000.01072000.01076000.01080000.01201000.01013000.01058000.01057000.0978000.0688000.0714000.0662000.0751000.0783000.0892000.01231000.01240000.01232000.01140000.01085000.01220000.01082000.01229000.01195000.0824000.0536000.0
Percentage of StandardProductWarrantyAccrual100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockShares

us-gaap:TreasuryStockShares


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1567700.01506500.01431200.01396200.01381000.01351300.01310400.01309600.01282500.01269000.01258100.01165700.01140800.01138300.01136400.01122300.01071600.01036400.01018000.0922420.0827210.0824010.0819420.0819420.0783420.0783420.0779280.0732580.0727580.0691470.0689470.0676900.0642390.0640640.0639140.0639140.0623140.0586750.0
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical
(None,)
None
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:StatementGeographical
('us-gaap:IntersegmentElimination', None)
None
us-gaap:IncomeTaxExpenseBenefit
us-gaap:StatementGeographical
(None,)
None
us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:NetIncomeLoss
us-gaap:StatementGeographical
(None,)
None
us-gaap:Assets
us-gaap:StatementGeographical
(None,)
None
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
None
us-gaap:Goodwill
us-gaap:StatementGeographical
(None,)
None
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:NetIncomeLoss
us-gaap:StatementGeographical
(None,)
None
us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
(None,)
None