PSN


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

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

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostOfGoodsAndServicesSold
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:GeneralAndAdministrativeExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestExpense
us-gaap:CreditFacility
us-gaap:InterestExpenseDebt
us-gaap:LongtermDebtType
us-gaap:LongtermDebtType, us-gaap:SubsidiarySaleOfStock

us-gaap:InterestIncomeExpenseNet

us-gaap:NetIncomeLoss
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:BusinessAcquisition
us-gaap:ContractWithCustomerBasisOfPricing
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:StatementGeographical

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:Liabilities
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:AssetsCurrent
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:AccountsReceivableNetCurrent
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:PrepaidExpenseAndOtherAssetsCurrent
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:AssetsNoncurrent
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets
us-gaap:BusinessAcquisition

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:StatementGeographical

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:ContractWithCustomerLiabilityCurrent
us-gaap:BusinessAcquisition
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:LiabilitiesCurrent
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:LongTermDebtCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:TaxesPayableCurrent
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:LiabilitiesNoncurrent

us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredFinanceCostsNoncurrentNet

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents
us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:ValuationAllowanceByDeferredTaxAsset
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:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:AmortizationOfFinancingCosts

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

psn:AdjustedEBITDAAttributableToNoncontrollingInterests

psn:AdjustedEBITDAAttributableToParent
us-gaap:StatementBusinessSegments

psn:AdjustmentsToAdditionalPaidInCapitalPurchaseOfConvertibleNoteHedge
us-gaap:StatementEquityComponents

psn:AmortizationOfConvertibleNotesDiscount
us-gaap:BusinessAcquisition
psn:BusinessAcquisitionProFormaNetIncomeLossIncludingPortionAttributableToNoncontrollingInterest

psn:ChangeInContractWithCustomerAssets

psn:ChangeInContractWithCustomerAssetsAndLiabilitiesNet

psn:ChangeInContractWithCustomerLiability

psn:ContractWithCustomerAdjustmentToRevenueImpactOfChangesInEstimatedClaimsOrIncentivesOverThreshold

psn:ContractWithCustomerAssetCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent

psn:ContractWithCustomerAssetLiabilityCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent

psn:ContractWithCustomerLiabilityCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent
us-gaap:LongtermDebtType
psn:ConvertibleNotesConvertedEachIntoSharesOfCommonStock
us-gaap:LongtermDebtType
psn:CostOfConvertibleNoteHedgeTransaction
us-gaap:LongtermDebtType
psn:DebtInstrumentConvertibleMeasurementPeriodPercentage
us-gaap:LongtermDebtType
psn:DebtInstrumentExerciseOfOptionByInitialPurchasersAggregatePrincipalAmount
us-gaap:LongtermDebtType
psn:DebtInstrumentNumberOfSharesIssuableUponConversion

psn:DecreaseInEarningsPerShareDiluted

psn:DecreaseInNetIncomeNetOfTax

psn:DecreaseInOperatingIncome
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
psn:DistributionsFromContributionsToEquityMethodInvestment

psn:EquityBasedCompensationIncomeExpense

psn:IncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities

psn:IncreaseDecreaseInPrepaidExpenseAndCurrentAssets

psn:MinorityInterestIncreaseDecreaseFromContributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

psn:MinorityInterestIncreaseDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
psn:NetDistributionsFromAndSalesProceedsToEquityMethodInvestment
us-gaap:LongtermDebtType
psn:NumberOfCommonStockAcquiredByOffsettingSaleWarrants

psn:OtherIncomeExpense

psn:OtherReconciliationFromNetIncomeToAdjustedEBITDA

psn:PaymentOfConvertibleNotesIssuanceTransactionCosts

psn:PaymentsForTaxesPaidOnVestedStock
us-gaap:Range, us-gaap:LongtermDebtType
psn:PercentageOfBondHedgeAndWarrantTransactionsIncreasedConversionPrice
us-gaap:RelatedPartyTransactionsByRelatedParty
psn:ReimbursableCostIncurred

psn:RestructuringIncomeExpense

psn:TransactionRelatedCosts

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued
us-gaap:StatementEquityComponents
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionsProFormaRevenue
us-gaap:BusinessAcquisition, us-gaap:IncomeStatementLocation
us-gaap:BusinessCombinationAcquisitionRelatedCosts

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger
us-gaap:LongtermDebtType, us-gaap:SubsidiarySaleOfStock
us-gaap:DebtInstrumentInterestRateDuringPeriod
us-gaap:LongtermDebtType, us-gaap:SubsidiarySaleOfStock
us-gaap:DebtInstrumentPeriodicPayment

us-gaap:Depreciation

us-gaap:DepreciationAndAmortization

us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
us-gaap:IncomeStatementLocation
us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense

us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:EquityMethodInvestmentSoldCarryingAmount

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FinitelivedIntangibleAssetsAcquired1

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GoodwillAcquiredDuringPeriod
us-gaap:StatementBusinessSegments

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInIncomeTaxes

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncrementalCommonSharesAttributableToConversionOfDebtSecurities

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InvestmentIncomeInterest

us-gaap:LeaseCost

us-gaap:NetIncomeLossAttributableToParentDiluted

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash

us-gaap:PaymentsForHedgeFinancingActivities
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireInterestInJointVenture

us-gaap:PaymentsToMinorityShareholders

us-gaap:ProceedsFromConvertibleDebt
us-gaap:LongtermDebtType
us-gaap:ProceedsFromDebtNetOfIssuanceCosts

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfWarrants
us-gaap:LongtermDebtType

us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProceedsFromMinorityShareholders

us-gaap:ProceedsFromSaleOfEquityMethodInvestments

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty
us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:RepaymentsOfDebt

us-gaap:RepaymentsOfLinesOfCredit

us-gaap:RestructuringCharges

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:ShortTermLeaseCost

us-gaap:SubleaseIncome

psn:AccruedExpensesAndOtherCurrentLiabilities
us-gaap:RelatedPartyTransactionsByRelatedParty

psn:BilledReceivablesCurrent
us-gaap:BusinessAcquisition
psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpensesAndOtherLiabilities
us-gaap:BusinessAcquisition
psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesLongTermLeaseLiabilities
us-gaap:BusinessAcquisition
psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesRightOfUseAssets
us-gaap:BusinessAcquisition
psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesShortTermLeaseLiabilities
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:LongtermDebtType
psn:CarryingAmountOfConvertibleSeniorNotesAdjustedInRetainedEarnings

psn:ContractReceivableRetainageAssetLiabilitiesNetDueAfterOneYear

psn:ContractReceivableRetainageAssetsLiabilitiesNet

psn:ContractWithCustomerAssetLiabilityNet
us-gaap:LongtermDebtType
psn:DebtInstrumentConvertibleDebtLiability
us-gaap:LongtermDebtType
psn:DebtInstrumentConvertibleNotesAdditionalPaidInCapital
us-gaap:LongtermDebtType
psn:DebtInstrumentConvertiblePrincipalAmount

psn:DeferredTaxAssetsLeaseLiability

psn:DeferredTaxAssetsRevenueAndCostRecognition

psn:DeferredTaxAssetsTaxDeferredExpenseProjectAndNonProjectReserves

psn:FinanceLeaseLiabilityPaymentsDueAfterYearFour

psn:FinanceLeaseRightOfUseAssetsAccumulatedDepreciation

psn:FinanceLeasesOtherAssetsNoncurrent

psn:FiniteLivedIntangibleAssetsAmortizableAmount

psn:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour

psn:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour

psn:LongTermEmployeeIncentives
us-gaap:LongtermDebtType
psn:NetCostOfPurchaseOfBondHedgesAndSaleOfWarrants

psn:OtherLiabilitiesNoncurrent1

psn:ProjectCostAccrualsCurrent
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:LongtermDebtType
psn:ReclassificationOfEquityComponentOfConvertibleSeniorNotesToLiabilities
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:LongtermDebtType
psn:ReclassificationOfEquityComponentOfDebtIssuanceCostsToLiabilities

us-gaap:AccountsReceivableGrossCurrent
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:AccountsReceivableRelatedPartiesCurrent

us-gaap:AccruedEmployeeBenefitsCurrent

us-gaap:AccruedInsuranceCurrent

us-gaap:AccruedSalariesCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentType
us-gaap:InvestmentType
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerAssetNetCurrent
us-gaap:BusinessAcquisition
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:ContractWithCustomerLiability

us-gaap:ContractsReceivableClaimsAndUncertainAmounts
us-gaap:LongtermDebtType
us-gaap:ConvertibleDebt
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentCarryingAmount
us-gaap:StatementScenario, us-gaap:ShortTermDebtType
us-gaap:Range, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentConvertibleConversionPrice1
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFeeAmount
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DebtInstrumentUnamortizedDiscountNoncurrent

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
us-gaap:SubsidiarySaleOfStock
us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards
us-gaap:IncomeTaxAuthority
us-gaap:IncomeTaxAuthority
us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesOther
us-gaap:BalanceSheetLocation
us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BalanceSheetLocation, us-gaap:SubsidiarySaleOfStock
us-gaap:InterestPayableCurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LettersOfCreditOutstandingAmount
us-gaap:CreditFacility
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:LiabilityForUncertainTaxPositionsCurrent

us-gaap:LiabilityForUncertainTaxPositionsNoncurrent
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:NotesPayableFairValueDisclosure

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:RestrictedCashAndInvestmentsCurrent

us-gaap:RevenueRemainingPerformanceObligation
us-gaap:StatementBusinessSegments

us-gaap:SelfInsuranceReserveNoncurrent
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
us-gaap:IncomeTaxAuthority
us-gaap:TaxCreditCarryforwardAmount
us-gaap:IncomeTaxAuthority
us-gaap:TaxCreditCarryforwardValuationAllowance

us-gaap:UnbilledReceivablesCurrent

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Other Nonoperating Income Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Property Plant And Equipment Net
Current Assets
Prepaid Expense And Other Assets Current
NonCurrent Assets
Other Assets Noncurrent
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Taxes Payable Current
Noncurrent Liabilities
Deferred Income Tax Liabilities Net
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Receivable
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

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us-gaap:CommonStockValue █▆▅▂▂▁▁146.752146.654146.609146.498146.496146.441146.441NANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁112.170097111.865501NA105.573613100.985587100.899324NA99.43487792.33611978161.484NA79.18552781.07426481846.305
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁102.509245102.375923NA100.736862100.694938100.669693NA99.43487792.33611978161.484NA79.18552781.07426481846.305
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:StockCompensationPlan█▁0.0092710.000145NA0.0002050.0049390.027596NANANANANANANANA
us-gaap:EarningsPerShareBasic ▁▁▂▂▂▁▁▃▂▁▁▃█▂0.070.090.219999999999999970.40.230.130.140.570.440.120.10.521.830.31
us-gaap:EarningsPerShareDiluted ▁▁▂▂▂▁▁▃▃▁▁▃█▂0.060.090.209999999999999960.40.230.130.140.570.440.120.10.521.830.31
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 COGS Ratio us-gaap:RelatedPartyTransactionsByRelatedParty psn:ConsolidatedJointVentures▁▁▃▃▃▁▄▃▂▃▄▄█▂98.24596.624115.019117.344117.889100.278131.767117.611109.004115.104126.797126.48174.947112.121
 COGS Ratio us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName psn:UnconsolidatedJointVentures▇▁▅▅▁▁█▄▄▁▄▄▄▂736.284236.517544.715594.64238.188238.188856.057474.6521.218229.466538.091482.634471.234281.078
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 TTM Greenblatt ROC _ _▄▄▆█▆▄▄▇▁▄▄20.21825.62341.57966.27146.26423.70124.27453.449-8.70623.04624.092NANANA
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us-gaap:AllocatedShareBasedCompensationExpense NANA5.643-0.99112.854-7.72120.24-1.65743.3113.853.2895.0495.0493.1
us-gaap:ComprehensiveIncomeNetOfTax ▁▂▂▃▂▁▂▄▃▁▁▃█▂9.73413.96725.79542.626.4224.1217.44356.97442.51612.2992.55343.557145.76522.484
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▅▅▅▆▇▂█▅▁▄▇▅▂▄5.3244.985.2945.8667.831.398.5854.481-0.1143.6456.9274.8221.6573.815
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▁▂▂▃▂▁▂▄▃▂▁▃█▂15.05818.94731.08948.46634.2525.5126.02861.45542.40215.9449.4848.379147.42226.299
us-gaap:CostOfGoodsAndServicesSold ▃▃▅▇▆▆█▇▇▄▅▇▃▁680.328669.082734.362788.769749.324769.632825.55798.552784.723714.237740.804783.018668.211602.972
us-gaap:GeneralAndAdministrativeExpense NANA191.752165.937187.64183.774199.98178.55225.359177.519175.382150.733147.448123.847
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▂▂▃▄▃▂▂▃▁▂▂▄█▃15.86519.38936.40562.53743.01619.45519.48145.84-13.35115.27216.07150.22159.05734.455
us-gaap:IncomeTaxExpenseBenefit ▇▇▇██▇▆▅▁▇▇▇▇▇3.8385.3759.516.01711.8915.084-2.823-15.453-53.4961.8861.8414.1549.0195.353
us-gaap:InterestExpense ▂▂▆▃▁▁▁▂▅█▅▄▂▁4.914.5417.35.4754.1594.0224.1524.9096.3768.2926.3675.944.5363.999
 us-gaap:InterestExpenseDebt us-gaap:CreditFacility us-gaap:RevolvingCreditFacility▃▂▂▃▄▃▁█0.30.10.10.20.40.3-0.11.1NANANANANANA
 us-gaap:InterestExpenseDebt us-gaap:LongtermDebtType us-gaap:ConvertibleDebt▁▁█▄0.70.62.91.5NANANANANANANANANANA
 us-gaap:InterestExpenseDebt us-gaap:LongtermDebtType,us-gaap:SubsidiarySaleOfStock us-gaap:SeniorNotes,us-gaap:PrivatePlacement▁█▁▁▁█▁▁3.13.23.13.13.13.23.13.1NANANANANANA
us-gaap:InterestIncomeExpenseNet ▆▆▂▅▇▇▇▆▄▁▄▄██-4.758-4.443-7.025-5.387-3.963-3.794-3.981-4.482-6.151-7.815-6.015-5.589-3.27-3.258
us-gaap:NetIncomeLoss ▁▁▂▃▂▁▁▃▃▁▁▃█▂6.7029.03921.61140.65823.29912.97313.72256.81240.2599.7417.44741.222148.38125.287
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▅▅▅▆▇▂█▅▁▄▇▅▂▄5.3254.9755.2945.8627.8261.3988.5824.481-0.1143.6456.7834.8441.6573.815
us-gaap:OperatingIncomeLoss ▃▄▅▆▅▃▃▆▁▃▃▆█▄20.21825.62341.57966.27146.26423.70124.27453.449-8.70623.04624.09255.11386.91238.891
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▇██▆▇▁▇▆▇▇▃▇▄▄3.0124.9144.2541.9263.104-8.83.460.1712.242.549-4.7212.303-2.598-2.784
us-gaap:OtherNonoperatingIncomeExpense ▆▃██▆▅▄▁█▅▃▆▃▇0.405-1.7911.8511.6530.715-0.452-0.812-3.1271.5060.041-2.0060.696-1.4931.152
us-gaap:ProfitLoss ▁▁▂▃▂▁▂▃▂▁▁▃█▂12.02714.01426.90546.5231.12514.37122.30461.29340.14513.38614.2346.066150.03829.102
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▄▄▆▇▇▆██▇▅▅▆▅▁879.356874.697964.2581004.236979.459970.9931037.3881023.277989.742904.405928.94976.157900.732754.679
us-gaap:SellingGeneralAndAdministrativeExpense █▁188.238187.522NANA187.64183.774NANANANANANANANA
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us-gaap:Assets ▇███▅▆▅▅▄▃▁3839.2973865.0013937.7043918.7613451.1823488.6053450.3683362.6443255.4523032.9982612.578NANANA
us-gaap:Liabilities ▆▆▇█▂▃▃▃▂▆▁1988.8472024.5592076.2872149.291744.931821.2261789.6121768.1931717.4892028.3061657.345NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇███▅▆▅▅▄▃▁3839.2973865.0013937.7043918.7613451.1823488.6053450.3683362.6443255.4523032.9982612.578NANANA
us-gaap:StockholdersEquity ███████▂▁▂▂1813.4651796.7991813.7721727.4971667.5481635.2621629.89-1010.654-1379.578-902.468-967.537NANANA
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us-gaap:AssetsCurrent ▅▅▅█▃▃▂▁▃▁▂1794.4061802.2071843.132081.6191589.1961601.9721526.4091474.2611595.9621431.1611488.807NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▆▅▆█▁▁▂▁▂▁▃483.443398.178483.609614.031129.579119.299182.688133.87202.854121.408280.221NANANA
us-gaap:AccountsReceivableNetCurrent ▂▄▄█▅▇▃▃▆▂▁637.98693.584698.578775.06717.358758.225671.492673.674734.389651.924623.286NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ██▃▃▅▅▄▁▂▃▁103.599101.53680.76977.90989.66290.51284.45470.45573.9177.01369.007NANANA
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 us-gaap:AssetsNoncurrent us-gaap:RelatedPartyTransactionsByRelatedParty psn:ConsolidatedJointVentures▆▇██▁▄▇▇▅▃▆2.6412.8882.992.9351.9472.4412.862.8362.5782.2852.689NANANA
 us-gaap:AssetsNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName psn:UnconsolidatedJointVentures▂▂▂▂▁▁▂█▇▇▇614.916580.224585.802567.919541.528527.529564.16956.367919.323894.191876.385NANANA
us-gaap:PropertyPlantAndEquipmentGross █▇██▆▃▁367.539364.529367.614368.643363.055355.252348.711NANANA296.382NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █▇▇▇▆▄▄▄▄▂▁256.922248.985246.587247.157238.291230.652225.96227.776223.333214.896204.533NANANA
us-gaap:AmortizationOfIntangibleAssets ██▇▇▇▇█▇▇▁24.524.522.120.922.122.723.822.121.41.8NA14.86.120.9
us-gaap:PropertyPlantAndEquipmentNet ▅▆▇▇███▅▃▂▁110.617115.544121.027121.486124.764124.6122.751109.238100.93497.29891.849NANA91.849
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures █▅▃▃▁▂▃▂▄▂▁86.04576.01768.97571.28964.90565.71668.6266.58473.48167.20263.56NANANA
us-gaap:Goodwill ███▅▅▅▅▅▃▃▁1263.061261.1891261.9781046.4531045.3441044.0141047.4251050.077922.403921.097736.938NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▂▄▆▂▃▅▇█▄▆▁197.985222.451245.958194.082214.936237.028259.858281.157229.639250.948179.519NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▂▄▆▂▃▅▇█▄▆▁197.985222.451245.958194.082214.936237.028259.858281.157229.639250.948179.518NANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA117.915NANANA120.779NANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▇▇▇▇████▇▇▁194.484204.189210.398212.592225.054231.269233.415219.207212.386216.4840.0NANANA
us-gaap:OtherAssetsNoncurrent ▃▁▆█▇▇█▄▄▂▃45.55440.38256.03860.33657.24659.1961.48950.5150.49543.91746.225NANANA
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us-gaap:AccountsPayableCurrent ▁▅▆▄▄█▅▇▇▃▇191.688219.22225.679208.307209.858235.381216.613226.563227.672203.684226.345NANANA
us-gaap:ContractWithCustomerLiabilityCurrent ▂▁▃▄▅█▇▇▆▆▄196.547186.028201.864212.373219.037241.178230.681231.032222.167225.017208.576NANANA
us-gaap:LiabilitiesCurrent ▃▄▆█▅▅▅▅▄▆▁1077.4241110.6671187.4091246.551130.9531151.3241144.3821156.2591109.7761188.8851006.161NANANA
us-gaap:LongTermDebtCurrent ▄▄▄▄50.050.050.050.0NANANANANA149.7860.0NANANA
us-gaap:OperatingLeaseLiabilityCurrent ███▇▇▇▇▇██▁53.99754.11354.13348.66147.64847.21749.99449.07451.69653.0290.0NANANA
us-gaap:OtherAccruedLiabilitiesCurrent NANA87.797NANANA86.371NANANA81.657NANANA
us-gaap:TaxesPayableCurrent ▂▄▃▁█▁▅▇▄▆█2.5826.2484.981.34212.0531.8197.2319.945.8169.41511.54NANANA
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 us-gaap:LiabilitiesNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName psn:UnconsolidatedJointVentures▂▂▂▁▁▁▂██▇▇565.249528.168517.697493.576486.464475.463507.131895.514898.666848.105813.269NANANA
us-gaap:LongTermDebt ██▇▇▁▂▁▁▁▆▅590.876590.346539.998537.119249.448314.401249.353249.306249.258509.211429.164NANANA
us-gaap:LongTermDebtNoncurrent ██▁▁590.876590.346539.998537.119NANA249.353NANANANANANANA
us-gaap:DeferredFinanceCostsNoncurrentNet ██▇█▁▁▁▁▁▁▁9.1249.6548.8649.1890.5520.5990.6470.6940.7420.7890.836NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ██▇▄▄▄▄▂▁▃▁12.6913.14612.2859.2739.1179.2349.6217.3376.197.9226.24NANANA
us-gaap:MinorityInterest ▄▇█▆▅▂▂▁▄▂█36.98543.64347.64541.97438.70432.11730.86628.09437.35231.82846.461NANANA
us-gaap:OtherLiabilitiesNoncurrent ▃▂▅█▅▂▄▃▃▁▄119.881113.598132.3145.494131.818118.049125.704120.971118.851111.023127.863NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▇▇▇▇███▇▇▇▁164.754175.584182.467189.319201.472206.76203.624188.571178.589181.2740.0NANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo ▂▁█▆50.14649.43855.66953.521NANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▁▁█▇39.52939.04448.21146.386NANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ▁▁█▇28.94528.54338.03436.502NANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA27.756NANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA29.674NANANANANANANANANANANA
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us-gaap:StockholdersEquity ███████▂▁▂▂1813.4651796.7991813.7721727.4971667.5481635.2621629.89-1010.654-1379.578-902.468-967.537NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ███████▂▁▂▂▂▂▂1850.451840.4421861.4171769.4711706.2521667.3791660.756-982.56-1342.226-870.64-921.076-825.538-869.936-1021.752
us-gaap:CommonStockValue █▆▅▂▂▁▁146.752146.654146.609146.498146.496146.441146.441NANANANANANANA
us-gaap:AdditionalPaidInCapitalCommonStock ▄▃█▄▂▁▁2673.9652667.132700.9252675.3832658.0362652.2272649.975NANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▆▅▅▅▄▄▄▆▁█▇-102.019-108.72-120.569-142.095-182.753-206.052-218.025-64.896-424.88675.77112.445NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax █▇▅▃▂▁▅▃▃▂▁-5.905-8.937-13.865-18.049-19.991-23.114-14.261-17.982-18.144-20.401-22.957NANANA
us-gaap:TreasuryStockValue ▁▁▁▅▅▅▅████899.328899.328899.328934.24934.24934.24934.24957.844957.844957.838957.025NANANA
us-gaap:MinorityInterest ▄▇█▆▅▂▂▁▄▂█36.98543.64347.64541.97438.70432.11730.86628.09437.35231.82846.461NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues █▁▅▃▆2.777-0.9261.368-0.0121.684NA-538.027-0.452537.33NANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▅▇▅▅▅▃▁█4.1557.2064.194.6124.182.252-0.9529.224NANANANANANA
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders █▁12.8478.989NANA1.2450.366.90714.591NANA12.0284.096NANA
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us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▂█▇▆▁▆█▄▂█▆▅▂104.428-65.965175.722144.88387.539-118.98389.612179.12311.613-60.108184.812108.26556.99-65.433
us-gaap:NetCashProvidedByUsedInInvestingActivities ██▄████▅█▄██▁█-8.797-11.045-310.292-10.255-13.62-12.202-29.093-229.502-11.149-301.0590.342-7.81-487.646-8.181
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▃█▂▄▃▃▄▆▁▂▆▃-11.035-11.2243.136345.937-64.55963.712-11.266-14.19180.87210.623-117.723-64.762231.7656.131
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▂▂█▃▂▄▂▄▁▄▃▁▂85.177-87.804-130.542481.1379.898-68.65248.912-64.92180.914-150.72666.96535.084-198.69-68.308
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us-gaap:AmortizationOfFinancingCosts █▆▆▄▂▂▂▂▂▂▂▂▁▁0.8650.6650.5960.3910.1960.1730.1710.20.20.2440.1730.20.10.149
us-gaap:DeferredIncomeTaxExpenseBenefit ▇▇█▇▇█▅▃▁█▇▇▇▇-4.620.4032.034-1.088-5.1895.514-18.177-40.237-56.01.486-2.7030.6970.722-0.138
us-gaap:IncreaseDecreaseInAccountsPayable ▂▄▅▄▂▆▃▄▇▁▁█▅▄-27.714-6.6589.568-1.846-26.01619.788-10.177-2.42923.665-28.182-32.85835.9543.193-0.723
us-gaap:IncreaseDecreaseInAccountsReceivable ▆▇▆█▆█▇▆█▇▆▇▇▁-55.549-2.597-97.86456.869-42.11691.734-1.52-65.72480.31517.135-77.08833.95351.551-469.72
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▂█▇▆▁▆█▄▂█▆▅▂104.428-65.965175.722144.88387.539-118.98389.612179.12311.613-60.108184.812108.26556.99-65.433
us-gaap:NetIncomeLoss ▁▁▂▃▂▁▁▃▃▁▁▃█▂6.7029.03921.61140.65823.29912.97313.72256.81240.2599.7417.44741.222148.38125.287
us-gaap:ProfitLoss ▁▁▂▃▂▁▂▃▂▁▁▃█▂12.02714.01426.90546.5231.12514.37122.30461.29340.14513.38614.2346.066150.03829.102
us-gaap:ShareBasedCompensation ▅▅▅▅▅▄▄▁█▄4.1557.2064.194.6124.182.252-0.952-37.93743.3110.0NANA5.049NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ██▄████▅█▄██▁█-8.797-11.045-310.292-10.255-13.62-12.202-29.093-229.502-11.149-301.0590.342-7.81-487.646-8.181
us-gaap:PaymentsToAcquireProductiveAssets ▁▁▁▂▃▄█▆▅▃▃▃▁▁4.7224.4494.8586.2410.30112.63723.56718.07714.91211.0419.8478.8715.4135.152
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▃█▂▄▃▃▄▆▁▂▆▃-11.035-11.2243.136345.937-64.55963.712-11.266-14.19180.87210.623-117.723-64.762231.7656.131
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value146146146146146146146
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.83.83.73.74.24.24.2

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-282018-06-292018-03-30
Value112111105100100999278161798181846
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-282018-06-292018-03-30
Value102102100100100999278161798181846
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:StockCompensationPlan


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value9271.0145.0205.04939.027596.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value0.070.090.220.40.230.130.140.570.440.120.10.521.830.31
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value0.060.090.210.40.230.130.140.570.440.120.10.521.830.31
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value5.643-0.99112-7.72120-1.657433.853.2895.0495.0493.1
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.6-0.11.3-0.82.0-0.24.40.40.40.50.60.4

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value9.734132542264.12175642122.5534314522
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.62.74.22.70.41.75.64.31.40.04.516.23.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value5.3244.985.2945.8667.831.398.5854.481-0.1143.6456.9274.8221.6573.815
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.50.60.80.10.80.4-0.00.40.00.50.20.5

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value15183148345.51266142159.484814726
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.72.23.24.83.50.62.56.04.31.80.05.016.43.5

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value680669734788749769825798784714740783668602
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax77.476.576.278.576.579.379.678.079.379.00.080.274.279.9

us-gaap:CostOfGoodsAndServicesSold us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value87861041051019711310810610711411639106
Percentage of CostOfGoodsAndServicesSold12.812.914.213.313.612.613.713.613.615.015.514.95.917.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.99.910.810.510.410.010.910.610.811.90.011.94.414.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:ConsolidatedJointVentures88.789.30.089.786.596.90.092.598.093.10.092.122.694.7

us-gaap:CostOfGoodsAndServicesSold us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value696210507551223223737452497216475462470253
Percentage of CostOfGoodsAndServicesSold102.331.569.169.929.929.189.356.663.430.464.159.070.442.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.224.152.654.922.823.071.144.250.224.00.047.352.233.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:UnconsolidatedJointVentures94.689.10.092.893.993.90.095.295.494.50.095.799.890.2

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value191165187183199178225177175150147123
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.916.519.218.919.317.422.819.60.015.416.416.4

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value1519366243191945-13.35115165015934
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.82.23.86.24.42.01.94.5-1.31.70.05.117.74.6

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value3.8385.3759.516115.084-2.823-15.453-53.4961.8861.8414.1549.0195.353
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.61.01.61.20.5-0.3-1.5-5.40.20.20.41.00.7

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value4.914.5417.35.4754.1594.0224.1524.9096.3768.2926.3675.944.5363.999
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.50.80.50.40.40.40.50.60.90.00.60.50.5

Interest Expense Debt

us-gaap:InterestExpenseDebt us-gaap:CreditFacility

us-gaap:InterestExpenseDebt

us-gaap:RevolvingCreditFacility


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.30.10.10.20.40.3-0.11.1
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0-0.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RevolvingCreditFacility0.00.00.00.00.00.00.00.0

us-gaap:InterestExpenseDebt us-gaap:LongtermDebtType

us-gaap:ConvertibleDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-30
Value0.70.62.91.5
Percentage of InterestExpenseDebt233.3600.02900.0750.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.30.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConvertibleDebt0.00.00.00.0

us-gaap:InterestExpenseDebt us-gaap:LongtermDebtType, us-gaap:SubsidiarySaleOfStock

us-gaap:SeniorNotes, us-gaap:PrivatePlacement


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.13.23.13.13.13.23.13.1
Percentage of InterestExpenseDebt1033.33200.03100.01550.0775.01066.7-3100.0281.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.40.30.30.30.30.30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SeniorNotes us-gaap:PrivatePlacement0.00.00.00.00.00.00.00.0

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-4758000.0-4443000.0-7025000.0-5387000.0-3963000.0-3794000.0-3981000.0-4482000.0-6151000.0-7815000.0-6015000.0-5589000.0-3270000.0-3258000.0
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5-0.5-0.7-0.5-0.4-0.4-0.4-0.4-0.6-0.9-0.6-0.6-0.4-0.4

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value6.7029.039214023121356409.7417.4474114825
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.02.24.02.41.31.35.64.11.10.84.216.53.4

us-gaap:NetIncomeLoss us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value11101112153.128188.7722.2237.89812101355.955
Percentage of NetIncomeLoss166.3114.150.929.868.524.1135.915.45.581.1165.424.391.323.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.21.11.21.60.31.80.90.20.90.01.015.00.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:ConsolidatedJointVentures11.310.70.010.313.53.10.07.52.06.90.07.977.45.3

us-gaap:NetIncomeLoss us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value40253743141411822231263200.75627
Percentage of NetIncomeLoss598.1284.0171.7105.862.2111.8863.539.859.6130.2846.650.00.5108.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.62.93.84.31.51.511.42.22.41.40.02.10.13.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:UnconsolidatedJointVentures5.410.90.07.26.16.10.04.84.65.50.04.30.29.8

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value5.3254.9755.2945.8627.8261.3988.5824.481-0.1143.6456.7834.8441.6573.815
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.50.60.80.10.80.4-0.00.40.70.50.20.5

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value5.3254.9755.2945.8627.8261.3988.5824.481-0.1143.6456.7834.8441.6573.815
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.50.60.80.10.80.4-0.00.40.00.50.20.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:ConsolidatedJointVentures5.45.10.05.06.61.40.03.8-0.13.20.03.80.93.4

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value2025416646232453-8.7062324558638
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.94.36.64.72.42.35.2-0.92.52.65.69.65.2

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value3012000.04914000.04254000.01926000.03104000.0-8800000.03460000.0171000.02240000.02549000.0-4721000.02303000.0-2598000.0-2784000.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.60.40.20.3-0.90.30.00.20.30.00.2-0.3-0.4

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value405000.0-1791000.01851000.01653000.0715000.0-452000.0-812000.0-3127000.01506000.041000.0-2006000.0696000.0-1493000.01152000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.20.20.20.1-0.0-0.1-0.30.20.00.00.1-0.20.2

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value12142646311422614013144615029
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.62.84.63.21.52.26.04.11.50.04.716.73.9

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value5.3254.9755.2945.8627.8261.3988.5824.481-0.1143.6456.7834.8441.6573.815
Percentage of ProfitLoss44.335.519.712.625.19.738.57.3-0.327.247.710.51.113.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.50.60.80.10.80.4-0.00.40.00.50.20.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value6.7029.039214023121356409.7417.4474114825
Percentage of ProfitLoss55.764.580.387.474.990.361.592.7100.372.852.389.598.986.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.02.24.02.41.31.35.64.11.10.04.216.53.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value6.7029.039214023121356409.7417.4474114825
Percentage of ProfitLoss55.764.580.387.474.990.361.592.7100.372.852.389.598.986.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.02.24.02.41.31.35.64.11.10.04.216.53.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value879874964100497997010371023989904928976900754
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:BusinessAcquisition

psn:BraxtonScienceTechnologyGroup


Revenue
Period End2021-06-302021-03-31
Value2931
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:BraxtonScienceTechnologyGroup100.0100.0

psn:OGSystems


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value46373334334629
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.63.83.43.33.34.73.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.63.83.43.33.34.73.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:OGSystems100.0100.0100.0100.0100.0100.0100.0

psn:QRCTechnologies


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-30
Value128.14.45.65.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.30.80.50.50.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.30.80.50.50.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:QRCTechnologies100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractWithCustomerBasisOfPricing

psn:CostPlus


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value392405398413408410449449415391408421382261
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.746.341.441.241.742.343.443.942.043.243.943.242.534.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.746.341.441.241.742.343.443.942.043.20.043.242.534.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:CostPlus100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value233229308324311308324288304257291300267265
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.526.332.032.431.831.831.328.230.828.531.430.829.735.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.526.332.032.431.831.831.328.230.828.50.030.829.735.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:FixedPriceContract100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TimeAndMaterialsContract


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value253239256265259252263285269255229254250227
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.827.426.626.526.526.025.427.927.228.324.726.127.830.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.827.426.626.526.526.025.427.927.228.30.026.127.830.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TimeAndMaterialsContract100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value9896115117117100131117109115126126174112
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.211.011.911.712.010.312.711.511.012.713.613.019.414.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.211.011.911.712.010.312.711.511.012.70.013.019.414.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:ConsolidatedJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value736236544594238238856474521229538482471281
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax83.727.056.559.224.324.582.546.452.725.457.949.452.337.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax83.727.056.559.224.324.582.546.452.725.40.049.452.337.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:UnconsolidatedJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

psn:CriticalInfrastructureSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value436422510506497493536537511481526532559463
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.748.352.950.450.850.851.852.551.753.256.654.562.161.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.748.352.950.450.850.851.852.551.753.256.654.562.161.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:CriticalInfrastructureSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:FederalSolutionSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value442452453498482477500486478422402443341291
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.351.747.149.649.249.248.247.548.346.843.445.537.938.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.351.747.149.649.249.248.247.548.346.843.445.537.938.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:FederalSolutionSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments, us-gaap:Subsegments

psn:CriticalInfrastructureSegment, psn:ConnectedCommunities


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-28
Value818911411698101-40.06215110910749165
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.210.311.911.610.010.5-3.914.811.111.95.317.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.210.311.911.610.010.5-3.914.811.111.90.017.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:CriticalInfrastructureSegment psn:ConnectedCommunities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:CriticalInfrastructureSegment, psn:MobilitySolutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value355332395389398391283286281269289300338255
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax40.438.041.038.840.740.327.428.028.429.831.130.837.633.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax40.438.041.038.840.740.327.428.028.429.80.030.837.633.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:CriticalInfrastructureSegment psn:MobilitySolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:FederalSolutionSegment, psn:CyberAndIntelligence


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value8583901101029810490817677686444
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.79.59.411.010.510.210.08.88.28.48.47.17.25.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.79.59.411.010.510.210.08.88.28.40.07.17.25.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:FederalSolutionSegment psn:CyberAndIntelligence100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:FederalSolutionSegment, psn:EngineeredSystems


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value13414015616416617213012912211411111810199
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.316.116.216.417.017.812.612.712.412.712.012.211.313.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.316.116.216.417.017.812.612.712.412.70.012.211.313.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:FederalSolutionSegment psn:EngineeredSystems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:FederalSolutionSegment, psn:MissileDefenseC5ISR


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value145144146154154154167164164158
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.516.515.215.415.815.916.116.016.717.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.516.515.215.415.815.916.116.016.717.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:FederalSolutionSegment psn:MissileDefenseC5ISR100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:FederalSolutionSegment, psn:SpaceAndGeospatialSolutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value77836168575153496545
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.89.56.36.85.95.35.24.96.65.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.89.56.36.85.95.35.24.96.65.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:FederalSolutionSegment psn:SpaceAndGeospatialSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:US


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value65665280077473773529977747446692598747671540
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax74.674.683.077.175.375.8289.075.775.274.0279.776.674.671.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax74.674.683.077.175.375.8289.075.775.274.00.076.674.671.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NorthAmerica


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value725716786831800797848849819731738805738587
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax82.581.981.682.881.782.281.883.182.880.879.582.582.077.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax82.581.981.682.881.782.281.883.182.880.80.082.582.077.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MiddleEast


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value147153172168174168184169167167186164158162
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.817.617.916.717.817.417.816.516.918.620.116.917.621.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.817.617.916.717.817.417.816.516.918.60.016.917.621.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MiddleEast100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value6.6344.7084.9794.8264.7264.1883.9954.412.8635.4233.466.163.5034.966
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.50.50.50.50.40.40.40.30.60.40.60.40.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.50.50.50.50.40.40.40.30.60.00.60.40.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-06-302020-03-31
Value188187187183
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.421.419.218.9

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value38393865393739183451348834503362325530322612
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value265302295346326286258257293272289
Percentage of Assets6.97.87.58.89.58.27.57.69.09.011.1
Percentage of Assets6.97.87.58.89.58.27.57.69.09.011.1
Percentage of Assets psn:ConsolidatedJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value16571320136013601316126213651735163215691583
Percentage of Assets43.234.234.534.738.236.239.651.650.151.760.6
Percentage of Assets43.234.234.534.738.236.239.651.650.151.760.6
Percentage of Assets psn:UnconsolidatedJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value19882024207621491744182117891768171720281657
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets51.852.452.754.850.652.251.952.652.866.963.4

us-gaap:Liabilities us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value191214201260246219193198217209199
Percentage of Liabilities9.610.69.712.114.112.110.811.212.710.312.1
Percentage of Assets5.05.55.16.67.16.35.65.96.76.97.6
Percentage of Assets psn:ConsolidatedJointVentures72.070.768.175.175.376.775.077.174.277.168.9

us-gaap:Liabilities us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value13701202122012471207113911621521141313361373
Percentage of Liabilities68.959.458.858.069.262.565.086.082.365.982.9
Percentage of Assets35.731.131.031.835.032.733.745.243.444.152.6
Percentage of Assets psn:UnconsolidatedJointVentures82.791.089.791.791.790.285.187.786.685.186.7

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value38393865393739183451348834503362325530322612
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1813179618131727166716351629-1010.654-1379.578-902.468-967.537
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets47.246.546.144.148.346.947.2-30.1-42.4-29.8-37.0

us-gaap:StockholdersEquity us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7488948680666458756290
Percentage of StockholdersEquity4.14.95.25.04.84.14.0-5.8-5.5-6.9-9.3
Percentage of Assets1.92.32.42.22.31.91.91.82.32.13.4
Percentage of Assets psn:ConsolidatedJointVentures28.029.331.924.924.723.325.022.925.822.931.1

us-gaap:StockholdersEquity us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value287118139113109123202213218233210
Percentage of StockholdersEquity15.86.67.76.66.67.612.4-21.2-15.9-25.8-21.7
Percentage of Assets7.53.13.52.93.23.55.96.46.77.78.0
Percentage of Assets psn:UnconsolidatedJointVentures17.39.010.38.38.39.814.912.313.414.913.3

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value17941802184320811589160115261474159514311488
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets46.746.646.853.146.045.944.243.849.047.257.0

us-gaap:AssetsCurrent us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value263299292343324284255254290269287
Percentage of AssetsCurrent14.716.615.916.520.417.816.717.218.218.919.3
Percentage of Assets6.97.87.48.89.48.27.47.68.98.911.0
Percentage of Assets psn:ConsolidatedJointVentures99.099.099.099.299.499.198.998.999.199.299.1

us-gaap:AssetsCurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1042740774792775735801778712675707
Percentage of AssetsCurrent58.141.142.038.148.845.952.552.844.747.247.5
Percentage of Assets27.219.219.720.222.521.123.223.221.922.327.1
Percentage of Assets psn:UnconsolidatedJointVentures62.956.156.958.358.958.258.744.943.743.044.7

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value483398483614129119182133202121280
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.610.312.315.73.83.45.34.06.24.010.7

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5752755031435155404273
Percentage of CashAndCashEquivalentsAtCarryingValue11.913.115.68.224.136.228.041.120.135.326.3
Percentage of Assets1.51.41.91.30.91.21.51.61.31.42.8
Percentage of Assets psn:ConsolidatedJointVentures21.717.325.514.69.615.119.821.413.915.825.5

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value637693698775717758671673734651623
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.617.917.719.820.821.719.520.022.621.523.9

us-gaap:AccountsReceivableNetCurrent us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value173215190259257202166164211193180
Percentage of AccountsReceivableNetCurrent27.231.127.333.536.026.724.824.428.729.728.9
Percentage of Assets4.55.64.86.67.55.84.84.96.56.46.9
Percentage of Assets psn:ConsolidatedJointVentures65.471.364.575.079.070.664.564.071.971.162.2

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value103101807789908470737769
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.62.12.02.62.62.42.12.32.52.6

us-gaap:PrepaidExpenseAndOtherAssetsCurrent us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6.6577.263.0453.9748.52411118.149139.42311
Percentage of PrepaidExpenseAndOtherAssetsCurrent6.47.23.85.19.512.813.211.617.812.217.2
Percentage of Assets0.20.20.10.10.20.30.30.20.40.30.5
Percentage of Assets psn:ConsolidatedJointVentures2.52.41.01.12.64.04.33.24.53.54.1

Assets Noncurrent

us-gaap:AssetsNoncurrent us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:AssetsNoncurrent

psn:ConsolidatedJointVentures


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.6412.8882.992.9351.9472.4412.862.8362.5782.2852.689
Percentage of AssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets psn:ConsolidatedJointVentures1.01.01.00.80.60.91.11.10.90.80.9

us-gaap:AssetsNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value614580585567541527564956919894876
Percentage of AssetsNoncurrent23283.520090.919592.019349.927813.521611.219725.933722.435660.339133.132591.5
Percentage of Assets16.015.014.914.515.715.116.428.428.229.533.5
Percentage of Assets psn:UnconsolidatedJointVentures37.143.943.141.741.141.841.355.156.357.055.3

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value367364367368363355348296
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.69.49.39.410.510.210.111.3

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

psn:ConstructionEquipment


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8.6358.8998.929.4779.547111111111112
Percentage of PropertyPlantAndEquipmentGross2.32.42.42.62.63.33.40.00.00.04.1
Percentage of Assets0.20.20.20.20.30.30.30.30.40.40.5
Percentage of Assets psn:ConstructionEquipment0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:BuildingAndBuildingImprovements


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9796989391888171646154
Percentage of PropertyPlantAndEquipmentGross26.426.526.725.325.325.023.20.00.00.018.3
Percentage of Assets2.52.52.52.42.72.52.32.12.02.02.1
Percentage of Assets us-gaap:BuildingAndBuildingImprovements0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ComputerEquipment


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value164163160173170166164168160152148
Percentage of PropertyPlantAndEquipmentGross44.744.843.647.147.046.847.10.00.00.050.0
Percentage of Assets4.34.24.14.44.94.84.85.04.95.05.7
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2021-06-302021-03-312020-12-312019-12-31
Value9.0326.8789.20214
Percentage of PropertyPlantAndEquipmentGross2.51.92.54.2
Percentage of Assets0.20.20.20.4
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8888919291889185878681
Percentage of PropertyPlantAndEquipmentGross24.124.324.825.025.225.026.30.00.00.027.6
Percentage of Assets2.32.32.32.42.62.52.72.52.72.83.1
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value256248246247238230225227223214204
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.76.46.36.36.96.66.56.86.97.17.8

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-09-282018-06-292018-03-30
Value2424222022222322211.814146.120
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AmortizationOfIntangibleAssets us-gaap:BusinessAcquisition

psn:BraxtonScienceTechnologyGroup


Amortization
Period End2021-06-302021-03-31
Value4.04.1
Percentage of AmortizationOfIntangibleAssets16.316.7
Percentage of Assets0.00.0
Percentage of Assets psn:BraxtonScienceTechnologyGroup0.00.0

psn:OGSystems


Amortization
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-01-072019-03-31
Value6.05.95.95.96.05.95.90.05.9
Percentage of AmortizationOfIntangibleAssets27.128.226.726.025.226.727.6327.80.0
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets psn:OGSystems0.00.00.00.00.00.00.00.00.0

psn:QRCTechnologies


Amortization
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-10.5863.53.63.63.81.9
Percentage of AmortizationOfIntangibleAssets-47.916.716.315.916.08.6
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets psn:QRCTechnologies0.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-302017-12-29
Value11011512112112412412210910097919187
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.93.03.13.13.63.63.63.23.13.23.50.00.0

us-gaap:PropertyPlantAndEquipmentNet us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.2832.5282.6292.6492.6722.7522.9453.1712.9982.5072.561
Percentage of PropertyPlantAndEquipmentNet2.12.22.22.22.12.22.42.93.02.62.8
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets psn:ConsolidatedJointVentures0.90.80.90.80.81.01.11.21.00.90.9

us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical

country:US


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-29
Value1001041091091121121099790867976
Percentage of PropertyPlantAndEquipmentNet90.990.790.690.290.390.389.589.189.688.687.087.0
Percentage of Assets2.62.72.82.83.33.23.22.92.82.83.10.0
Percentage of Assets country:US0.00.00.00.00.00.00.00.00.00.00.00.0

srt:NorthAmerica


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-302017-12-29
Value1061111161161191191171039592868680
Percentage of PropertyPlantAndEquipmentNet96.596.496.296.196.296.095.894.994.494.894.694.692.3
Percentage of Assets2.82.93.03.03.53.43.43.12.93.03.30.00.0
Percentage of Assets srt:NorthAmerica0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MiddleEast


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-302017-12-29
Value3.884.1464.5674.6814.7794.9425.1455.5485.6555.0365.0025.0026.726
Percentage of PropertyPlantAndEquipmentNet3.53.63.83.93.84.04.25.15.65.25.45.47.7
Percentage of Assets0.10.10.10.10.10.10.10.20.20.20.20.00.0
Percentage of Assets us-gaap:MiddleEast0.00.00.00.00.00.00.00.00.00.00.00.00.0

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8676687164656866736763
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.01.81.81.91.92.02.02.32.22.4

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8676687164656866736763
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.01.81.81.91.92.02.02.32.22.4
Percentage of Assets psn:UnconsolidatedJointVentures5.25.85.15.24.95.25.03.84.54.34.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-29
Value12631261126110461045104410471050922921736496
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.932.632.026.730.329.930.431.228.330.428.20.0

us-gaap:Goodwill us-gaap:BusinessAcquisition

psn:BraxtonScienceTechnologyGroup


Goodwillus-gaap:
Period End2020-11-19
Value213
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets psn:BraxtonScienceTechnologyGroup0.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

psn:CriticalInfrastructureSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-29
Value757473716968727172707074
Percentage of Goodwill6.05.95.86.86.76.66.96.87.87.79.515.0
Percentage of Assets2.01.91.91.82.02.02.12.12.22.32.70.0
Percentage of Assets psn:CriticalInfrastructureSegment0.00.00.00.00.00.00.00.00.00.00.00.0

psn:FederalSolutionSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-29
Value118711861188975975975975978850850666422
Percentage of Goodwill94.094.194.293.293.393.493.193.292.292.390.585.0
Percentage of Assets30.930.730.224.928.328.028.329.126.128.025.50.0
Percentage of Assets psn:FederalSolutionSegment0.00.00.00.00.00.00.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value197222245194214237259281229250179
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.25.86.25.06.26.87.58.47.18.36.9

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value197222245194214237259281229250179
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.25.86.25.06.26.87.58.47.18.36.9

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value12814015312813914916016612613282
Percentage of FiniteLivedIntangibleAssetsNet65.163.262.566.464.963.361.859.154.953.046.0
Percentage of Assets3.43.63.93.34.04.34.74.93.94.43.2
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3037434956637079626872
Percentage of FiniteLivedIntangibleAssetsNet15.216.717.525.326.126.627.028.227.427.340.5
Percentage of Assets0.81.01.11.31.61.82.02.41.92.32.8
Percentage of Assets us-gaap:DevelopedTechnologyRights0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InProcessResearchAndDevelopment


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1.81.81.81.81.81.81.80.0
Percentage of FiniteLivedIntangibleAssetsNet0.90.80.70.90.80.80.70.0
Percentage of Assets0.00.00.00.00.10.10.10.0
Percentage of Assets us-gaap:InProcessResearchAndDevelopment0.00.00.00.00.00.00.00.0

us-gaap:LeaseAgreements


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.0610.0660.0710.0760.080.0850.090.0940.0990.1040.109
Percentage of FiniteLivedIntangibleAssetsNet0.00.00.00.00.00.00.00.00.00.00.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:LeaseAgreements0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncompeteAgreements


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1.5621.8782.2071.852.1252.42.6752.952.02.20.0
Percentage of FiniteLivedIntangibleAssetsNet0.80.80.91.01.01.01.01.00.90.90.0
Percentage of Assets0.00.00.10.00.10.10.10.10.10.10.0
Percentage of Assets us-gaap:NoncompeteAgreements0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OrderOrProductionBacklog


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3540441113172128354222
Percentage of FiniteLivedIntangibleAssetsNet17.918.418.25.96.57.48.410.315.517.112.5
Percentage of Assets0.91.11.10.30.40.50.60.91.11.40.9
Percentage of Assets us-gaap:OrderOrProductionBacklog0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.0720.0740.080.0860.0920.0980.1050.9140.1170.1250.13
Percentage of FiniteLivedIntangibleAssetsNet0.00.00.00.00.00.00.00.30.10.00.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TradeNames


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.0330.1330.2330.8081.3831.9582.5333.1082.854.4081.5
Percentage of FiniteLivedIntangibleAssetsNet0.00.10.10.40.60.81.01.11.21.80.8
Percentage of Assets0.00.00.00.00.00.10.10.10.10.10.1
Percentage of Assets us-gaap:TradeNames0.00.00.00.00.00.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-31
Value117120
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0
Percentage of Assets3.03.5

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1942042102122252312332192122160.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets5.15.35.35.46.56.66.86.56.57.10.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4540566057596150504346
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.01.41.51.71.71.81.51.61.41.8

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value191219225208209235216226227203226
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.05.75.75.36.16.76.36.77.06.78.7

us-gaap:AccountsPayableCurrent us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value851019772918985901039187
Percentage of AccountsPayableCurrent44.646.343.335.043.838.239.640.045.744.938.8
Percentage of Assets2.22.62.51.92.72.62.52.73.23.03.4
Percentage of Assets psn:ConsolidatedJointVentures32.233.633.121.128.231.433.335.335.433.630.3

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value196186201212219241230231222225208
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.14.85.15.46.36.96.76.96.87.48.0

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:BusinessAcquisition

psn:BraxtonScienceTechnologyGroup


Contract
Period End2020-11-19
Value0.3
Percentage of ContractWithCustomerLiabilityCurrent0.0
Percentage of Assets0.0
Percentage of Assets psn:BraxtonScienceTechnologyGroup0.0

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3535334441393243484638
Percentage of ContractWithCustomerLiabilityCurrent17.919.216.820.819.116.314.118.821.820.818.6
Percentage of Assets0.90.90.91.11.21.10.91.31.51.51.5
Percentage of Assets psn:ConsolidatedJointVentures13.311.811.512.812.813.712.616.916.517.213.4

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7.8875.7265.723.3524.4354.3594.5095.5173.8579.60310
Percentage of ContractWithCustomerLiabilityCurrent4.03.12.81.62.01.82.02.41.74.35.2
Percentage of Assets0.20.10.10.10.10.10.10.20.10.30.4
Percentage of Assets psn:UnconsolidatedJointVentures0.50.40.40.20.30.30.30.30.20.60.7

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10771110118712461130115111441156110911881006
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets28.128.730.231.832.833.033.234.434.139.238.5

us-gaap:LiabilitiesCurrent us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value191214201260246219193198217209199
Percentage of LiabilitiesCurrent17.719.317.020.921.819.116.917.119.617.719.9
Percentage of Assets5.05.55.16.67.16.35.65.96.76.97.6
Percentage of Assets psn:ConsolidatedJointVentures72.070.768.175.175.376.775.077.174.277.168.9

us-gaap:LiabilitiesCurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value805673703753720663655625514487560
Percentage of LiabilitiesCurrent74.860.759.260.563.757.657.354.146.441.055.7
Percentage of Assets21.017.417.919.220.919.019.018.615.816.121.4
Percentage of Assets psn:UnconsolidatedJointVentures48.651.051.755.454.752.648.036.131.531.135.4

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302019-03-312018-12-31
Value505050501490.0
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.00.0
Percentage of Assets1.31.31.31.34.90.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value535454484747494951530.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.41.41.41.21.41.41.41.51.61.70.0

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2020-12-312019-12-312018-12-31
Value878681
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0
Percentage of Assets2.22.53.1

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.5826.2484.981.342121.8197.2319.945.8169.41511
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.20.10.00.30.10.20.30.20.30.4

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:LiabilitiesNoncurrent

psn:UnconsolidatedJointVentures


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value565528517493486475507895898848813
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.713.713.112.614.113.614.726.627.628.031.1
Percentage of Assets psn:UnconsolidatedJointVentures34.140.038.136.336.937.737.151.655.154.051.3

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value590590539537249314249249249509429
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.415.313.713.77.29.07.27.47.716.816.4

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value590590539537249
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0
Percentage of Assets15.415.313.713.77.2

Deferred Finance Costs Noncurrent Net

us-gaap:DeferredFinanceCostsNoncurrentNet

us-gaap:DeferredFinanceCostsNoncurrentNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9124000.09654000.08864000.09189000.0552000.0599000.0647000.0694000.0742000.0789000.0836000.0
Percentage of DeferredFinanceCostsNoncurrentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.20.00.00.00.00.00.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1213129.2739.1179.2349.6217.3376.197.9226.24
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.20.30.30.30.20.20.30.2

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3643474138323028373146
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.11.21.11.10.90.90.81.11.01.8

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value119113132145131118125120118111127
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.12.93.43.73.83.43.63.63.73.74.9

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1641751821892012062031881781810.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets4.34.54.64.85.85.95.95.65.56.00.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value50495553
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets1.31.31.41.4

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value39394846
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets1.01.01.21.2

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value28283836
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets0.80.71.00.9

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value27
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.7

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value29
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.8

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value218229236237249253253
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.75.96.06.17.27.37.4

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value237250260262
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets6.26.56.66.7

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value18202424
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0
Percentage of Assets0.50.50.60.6

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1813179618131727166716351629-1010.654-1379.578-902.468-967.537
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets47.246.546.144.148.346.947.2-30.1-42.4-29.8-37.0

us-gaap:StockholdersEquity us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7488948680666458756290
Percentage of StockholdersEquity4.14.95.25.04.84.14.0-5.8-5.5-6.9-9.3
Percentage of Assets1.92.32.42.22.31.91.91.82.32.13.4
Percentage of Assets psn:ConsolidatedJointVentures28.029.331.924.924.723.325.022.925.822.931.1

us-gaap:StockholdersEquity us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value287118139113109123202213218233210
Percentage of StockholdersEquity15.86.67.76.66.67.612.4-21.2-15.9-25.8-21.7
Percentage of Assets7.53.13.52.93.23.55.96.46.77.78.0
Percentage of Assets psn:UnconsolidatedJointVentures17.39.010.38.38.39.814.912.313.414.913.3

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-302017-12-292016-12-30
Value1850184018611769170616671660-982.56-1342.226-870.64-921.076-825.538-869.936-1021.752-1049.916-935.542
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets48.247.647.345.249.447.848.1-29.2-41.2-28.7-35.30.00.00.00.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements

srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment, psn:AccountingStandardsUpdate202006


Stockholders
Period End2020-12-31
Value-37.22
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-2.0
Percentage of Assets-0.9
Percentage of Assets srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment psn:AccountingStandardsUpdate2020060.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents

srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment, psn:AccountingStandardsUpdate202006, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-31
Value-40.002
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-2.1
Percentage of Assets-1.0
Percentage of Assets srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment psn:AccountingStandardsUpdate202006 us-gaap:AdditionalPaidInCapital0.0

srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment, psn:AccountingStandardsUpdate202006, us-gaap:Parent


Stockholders
Period End2020-12-31
Value-37.22
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-2.0
Percentage of Assets-0.9
Percentage of Assets srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment psn:AccountingStandardsUpdate202006 us-gaap:Parent0.0

srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment, psn:AccountingStandardsUpdate202006, us-gaap:RetainedEarnings


Stockholders
Period End2020-12-31
Value2.782
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.1
Percentage of Assets0.1
Percentage of Assets srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment psn:AccountingStandardsUpdate202006 us-gaap:RetainedEarnings0.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:Restatement, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:ValuationAllowanceByDeferredTaxAsset

srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment, us-gaap:AccountingStandardsUpdate201602, psn:DeferredTaxAsset


Stockholders
Period End2020-12-31
Value0.7
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.0
Percentage of Assets0.0
Percentage of Assets srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment us-gaap:AccountingStandardsUpdate201602 psn:DeferredTaxAsset0.0

srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment, us-gaap:AccountingStandardsUpdate201602, psn:NetDeferredTaxAsset


Stockholders
Period End2020-12-31
Value52
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest2.8
Percentage of Assets1.3
Percentage of Assets srt:RevisionOfPriorPeriodAccountingStandardsUpdateAdjustment us-gaap:AccountingStandardsUpdate201602 psn:NetDeferredTaxAsset0.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-302017-12-292016-12-30
Value-5.905-8.937-13.865-18.049-19.991-23.114-14.261-17.982-18.144-20.401-22.957-18.093-20.397-17.803-15.003-19.702
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.3-0.5-0.7-1.0-1.2-1.4-0.91.81.42.32.52.22.31.71.42.1
Percentage of Assets-0.2-0.2-0.4-0.5-0.6-0.7-0.4-0.5-0.6-0.7-0.90.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value26732667270026752658265226498.7720.00.00.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest144.5144.9145.1151.2155.8159.1159.6-0.9-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets69.669.068.668.377.076.076.80.30.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value14614614614614614614621210.00.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest7.98.07.98.38.68.88.8-2.2-1.6-0.0-0.0-0.0-0.0-0.0
Percentage of Assets3.83.83.73.74.24.24.20.60.70.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-302017-12-292016-12-30
Value36434741383230283731464443372757
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest2.02.42.62.42.31.91.9-2.9-2.8-3.7-5.0-5.4-5.1-3.7-2.6-6.1
Percentage of Assets1.01.11.21.11.10.90.90.81.11.01.80.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-302017-12-292016-12-30
Value1813179618131727166716351629-1010.654-1379.578-902.468-967.537-870.345-913.871-1059.658-1077.41-992.711
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest98.097.697.497.697.798.198.1102.9102.8103.7105.0105.4105.1103.7102.6106.1
Percentage of Assets47.246.546.144.148.346.947.2-30.1-42.4-29.8-37.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-302017-12-292016-12-30
Value-102.019-108.72-120.569-142.095-182.753-206.052-218.025-64.896-424.88675129715-165.116-186.035-166.89
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-5.5-5.9-6.5-8.0-10.7-12.4-13.16.631.7-8.7-1.4-11.8-1.816.217.717.8
Percentage of Assets-2.7-2.8-3.1-3.6-5.3-5.9-6.3-1.9-13.12.50.50.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-302017-12-292016-12-30
Value-899.328-899.328-899.328-934.24-934.24-934.24-934.24-957.844-957.844-957.838-957.025-949.68-909.368-876.738-876.372-806.119
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-48.6-48.9-48.3-52.8-54.8-56.0-56.397.571.4110.0103.9115.0104.585.883.586.2
Percentage of Assets-23.4-23.3-22.8-23.8-27.1-26.8-27.1-28.5-29.4-31.6-36.60.00.00.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value146146146146146146146
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.83.83.73.74.24.24.2

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value2673266727002675265826522649
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets69.669.068.668.377.076.076.8

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-102.019-108.72-120.569-142.095-182.753-206.052-218.025-64.896-424.8867512
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-2.7-2.8-3.1-3.6-5.3-5.9-6.3-1.9-13.12.50.5

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-5905000.0-8937000.0-13865000.0-18049000.0-19991000.0-23114000.0-14261000.0-17982000.0-18144000.0-20401000.0-22957000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.2-0.2-0.4-0.5-0.6-0.7-0.4-0.5-0.6-0.7-0.9

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value899899899934934934934957957957957
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.423.322.823.827.126.827.128.529.431.636.6

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3643474138323028373146
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.11.21.11.10.90.90.81.11.01.8

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value2.777-0.9261.368-0.0121.684-538.027-0.452537
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:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value2.68-0.9991.342-0.0141.629-516.581-0.452516
Percentage of StockIssuedDuringPeriodValueNewIssues96.5107.998.1116.796.796.0100.096.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value0.0980.0450.1110.0020.055-21.2490.021
Percentage of StockIssuedDuringPeriodValueNewIssues3.5-4.98.1-16.73.33.9-0.04.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.0

us-gaap:Parent


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value2.777-0.9261.368-0.0121.684-538.027-0.452537
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stock
Period End2021-06-302021-03-31
Value-0.0010.028
Percentage of StockIssuedDuringPeriodValueNewIssues-0.0-3.0
Percentage of Assets0.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.0

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4.1557.2064.194.6124.182.252-0.9529.224
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:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4.1557.2064.194.6124.182.252-0.9529.224
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.0

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4.1557.2064.194.6124.182.252-0.9529.224
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.0

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302018-12-312018-09-28
Value128.9891.2450.366.90714124.096
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302018-12-312018-09-28
Value128.9891.2450.366.90714124.096
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value104-65.96517514487-118.9838917911-60.10818410856-65.433
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.9-7.518.214.48.9-12.38.617.51.2-6.60.011.16.3-8.7

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-8797000.0-11045000.0-310290000.0-10255000.0-13620000.0-12202000.0-29093000.0-229500000.0-11149000.0-301060000.0342000.0-7810000.0-487650000.0-8181000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0-1.3-32.2-1.0-1.4-1.3-2.8-22.4-1.1-33.30.0-0.8-54.1-1.1

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-11.035-11.2243.136345-64.55963-11.266-14.19180210-117.723-64.7622316.131
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.3-1.30.334.4-6.66.6-1.1-1.48.223.30.0-6.625.70.8

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value85-87.804-130.5424819.898-68.65248-64.92180-150.7266635-198.69-68.308
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.7-10.0-13.547.91.0-7.14.7-6.38.2-16.70.03.6-22.1-9.1

Amortization Of Financing Costs

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfFinancingCosts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value865000.0665000.0596000.0391000.0196000.0173000.0171000.0200000.0200000.0244000.0173000.0200000.0100000.0149000.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-4620000.0403000.02034000.0-1088000.0-5189000.05514000.0-18177000.0-40237000.0-56000000.01486000.0-2703000.0697000.0722000.0-138000.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-27.714-6.6589.568-1.846-26.01619-10.177-2.42923-28.182-32.858353.193-0.723
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-55.549-2.597-97.86456-42.11691-1.52-65.7248017-77.0883351-469.72
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value104-65.96517514487-118.9838917911-60.10818410856-65.433
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.9-7.518.214.48.9-12.38.617.51.2-6.60.011.16.3-8.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value6.7029.039214023121356409.7417.4474114825
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.02.24.02.41.31.35.64.11.10.84.216.53.4

us-gaap:NetIncomeLoss us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value11101112153.128188.7722.2237.89812101355.955
Percentage of NetIncomeLoss166.3114.150.929.868.524.1135.915.45.581.1165.424.391.323.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.21.11.21.60.31.80.90.20.90.01.015.00.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:ConsolidatedJointVentures11.310.79.610.313.53.114.27.52.06.99.77.977.45.3

us-gaap:NetIncomeLoss us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value40253743141411822231263200.75627
Percentage of NetIncomeLoss598.1284.0171.7105.862.2111.8863.539.859.6130.2846.650.00.5108.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.62.93.84.31.51.511.42.22.41.40.02.10.13.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax psn:UnconsolidatedJointVentures5.410.96.87.26.16.113.84.84.65.511.74.30.29.8

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value12142646311422614013144615029
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.62.84.63.21.52.26.04.11.50.04.716.73.9

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value5.3254.9755.2945.8627.8261.3988.5824.481-0.1143.6456.7834.8441.6573.815
Percentage of ProfitLoss44.335.519.712.625.19.738.57.3-0.327.247.710.51.113.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.50.60.80.10.80.4-0.00.40.00.50.20.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value6.7029.039214023121356409.7417.4474114825
Percentage of ProfitLoss55.764.580.387.474.990.361.592.7100.372.852.389.598.986.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.02.24.02.41.31.35.64.11.10.04.216.53.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value6.7029.039214023121356409.7417.4474114825
Percentage of ProfitLoss55.764.580.387.474.990.361.592.7100.372.852.389.598.986.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.02.24.02.41.31.35.64.11.10.04.216.53.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-06-29
Value4.1557.2064.194.6124.182.252-0.952-37.937430.05.049
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-8797000.0-11045000.0-310290000.0-10255000.0-13620000.0-12202000.0-29093000.0-229500000.0-11149000.0-301060000.0342000.0-7810000.0-487650000.0-8181000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0-1.3-32.2-1.0-1.4-1.3-2.8-22.4-1.1-33.30.0-0.8-54.1-1.1

Payments To Acquire Productive Assets

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value4.7224.4494.8586.241012231814119.8478.8715.4135.152
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-11.035-11.2243.136345-64.55963-11.266-14.19180210-117.723-64.7622316.131
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.3-1.30.334.4-6.66.6-1.1-1.48.223.30.0-6.625.70.8

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-30
Value24.227.7-0.0925.610.27640.2613139.38-33.714.00680.12350.1554
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-292016-12-30
Value16157.8457.1377.827
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-31
Value31302317176.668
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0

psn:AdjustedEBITDAAttributableToNoncontrollingInterests

psn:AdjustedEBITDAAttributableToNoncontrollingInterests


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-5410000.0-5060000.05218000.0-6071000.0-7942000.0-1522000.08712000.0-4655000.020000.0-3749000.06726000.0-5002000.0-1759000.0-3920000.0
Percentage of AdjustedEBITDAAttributableToNoncontrollingInterests100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:AdjustedEBITDAAttributableToParent

psn:AdjustedEBITDAAttributableToParent


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value6063909483588784766454835043
Percentage of AdjustedEBITDAAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:AdjustedEBITDAAttributableToParent us-gaap:StatementBusinessSegments

psn:CriticalInfrastructureSegment


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value2731424835273633402526381623
Percentage of AdjustedEBITDAAttributableToParent46.149.747.551.642.746.441.840.353.239.749.045.533.354.0

psn:FederalSolutionSegment


Adjusted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value3231424547314250353820453320
Percentage of AdjustedEBITDAAttributableToParent53.950.346.748.457.353.648.359.746.860.338.654.566.746.0

psn:AdjustmentsToAdditionalPaidInCapitalPurchaseOfConvertibleNoteHedge

psn:AdjustmentsToAdditionalPaidInCapitalPurchaseOfConvertibleNoteHedge


Adjustments
Period End2020-12-312020-09-30
Value0-54611000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalPurchaseOfConvertibleNoteHedge0.0100.0

psn:AdjustmentsToAdditionalPaidInCapitalPurchaseOfConvertibleNoteHedge us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2020-12-312020-09-30
Value0-54611000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalPurchaseOfConvertibleNoteHedge0.0100.0

us-gaap:Parent


Adjustments
Period End2020-12-312020-09-30
Value0-54611000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalPurchaseOfConvertibleNoteHedge0.0100.0

psn:AmortizationOfConvertibleNotesDiscount

psn:AmortizationOfConvertibleNotesDiscount


Amortization
Period End2020-12-31
Value2554000.0
Percentage of AmortizationOfConvertibleNotesDiscount100.0

psn:BusinessAcquisitionProFormaNetIncomeLossIncludingPortionAttributableToNoncontrollingInterest us-gaap:BusinessAcquisition

psn:BusinessAcquisitionProFormaNetIncomeLossIncludingPortionAttributableToNoncontrollingInterest

psn:BraxtonScienceTechnologyGroup


Business
Period End2021-06-302020-06-30
Value1231
Percentage of BusinessAcquisitionProFormaNetIncomeLossIncludingPortionAttributableToNoncontrollingInterest100.0100.0

psn:OGSystems


Business
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-29
Value473214156140179.05639141
Percentage of BusinessAcquisitionProFormaNetIncomeLossIncludingPortionAttributableToNoncontrollingInterest0.0103.30.00.00.00.00.00.00.00.0

psn:QRCTechnologies


Business
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-28
Value47311565401044
Percentage of BusinessAcquisitionProFormaNetIncomeLossIncludingPortionAttributableToNoncontrollingInterest0.0100.30.00.00.00.00.0

psn:ChangeInContractWithCustomerAssets

psn:ChangeInContractWithCustomerAssets


Change
Period End2020-12-31
Value-34.325
Percentage of ChangeInContractWithCustomerAssets100.0

psn:ChangeInContractWithCustomerAssetsAndLiabilitiesNet

psn:ChangeInContractWithCustomerAssetsAndLiabilitiesNet


Change
Period End2020-12-31
Value-23.816
Percentage of ChangeInContractWithCustomerAssetsAndLiabilitiesNet100.0

psn:ChangeInContractWithCustomerLiability

psn:ChangeInContractWithCustomerLiability


Change
Period End2020-12-31
Value-10509000.0
Percentage of ChangeInContractWithCustomerLiability100.0

psn:ContractWithCustomerAdjustmentToRevenueImpactOfChangesInEstimatedClaimsOrIncentivesOverThreshold

psn:ContractWithCustomerAdjustmentToRevenueImpactOfChangesInEstimatedClaimsOrIncentivesOverThreshold


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-28
Value05000000.005000000.05000000.05000000.05000000.005000000.00
Percentage of ContractWithCustomerAdjustmentToRevenueImpactOfChangesInEstimatedClaimsOrIncentivesOverThreshold0.0100.00.0100.0100.0100.0100.00.0100.00.0

psn:ContractWithCustomerAssetCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent

psn:ContractWithCustomerAssetCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent


Contract
Period End2020-12-31
Value-5.9
Percentage of ContractWithCustomerAssetCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent100.0

psn:ContractWithCustomerAssetLiabilityCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent

psn:ContractWithCustomerAssetLiabilityCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent


Contract
Period End2020-12-31
Value-6.9
Percentage of ContractWithCustomerAssetLiabilityCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent100.0

psn:ContractWithCustomerLiabilityCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent

psn:ContractWithCustomerLiabilityCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent


Contract
Period End2020-12-31
Value-4.6
Percentage of ContractWithCustomerLiabilityCumulativeCatchupAdjustmentToRevenueChangeInMeasureOfProgressPercent100.0

psn:ConvertibleNotesConvertedEachIntoSharesOfCommonStock us-gaap:LongtermDebtType

psn:ConvertibleNotesConvertedEachIntoSharesOfCommonStock

us-gaap:ConvertibleDebt


Convertible
Period End2021-06-302021-03-312020-12-31
Value022.2910
Percentage of ConvertibleNotesConvertedEachIntoSharesOfCommonStock0.0100.00.0

psn:CostOfConvertibleNoteHedgeTransaction us-gaap:LongtermDebtType

psn:CostOfConvertibleNoteHedgeTransaction

us-gaap:ConvertibleDebt


Cost
Period End2020-08-31
Value55
Percentage of CostOfConvertibleNoteHedgeTransaction100.0

psn:DebtInstrumentConvertibleMeasurementPeriodPercentage us-gaap:LongtermDebtType

psn:DebtInstrumentConvertibleMeasurementPeriodPercentage

us-gaap:ConvertibleDebt


Debt
Period End2020-08-31
Value98.0
Percentage of DebtInstrumentConvertibleMeasurementPeriodPercentage100.0

psn:DebtInstrumentExerciseOfOptionByInitialPurchasersAggregatePrincipalAmount us-gaap:LongtermDebtType

psn:DebtInstrumentExerciseOfOptionByInitialPurchasersAggregatePrincipalAmount

us-gaap:ConvertibleDebt


Debt
Period End2020-08-31
Value50
Percentage of DebtInstrumentExerciseOfOptionByInitialPurchasersAggregatePrincipalAmount100.0

psn:DebtInstrumentNumberOfSharesIssuableUponConversion us-gaap:LongtermDebtType

psn:DebtInstrumentNumberOfSharesIssuableUponConversion

us-gaap:ConvertibleDebt


Debt
Period End2020-08-31
Value8900000.0
Percentage of DebtInstrumentNumberOfSharesIssuableUponConversion100.0

psn:DecreaseInEarningsPerShareDiluted

psn:DecreaseInEarningsPerShareDiluted


Decrease
Period End2021-06-30
Value0.01
Percentage of DecreaseInEarningsPerShareDiluted100.0

psn:DecreaseInNetIncomeNetOfTax

psn:DecreaseInNetIncomeNetOfTax


Decrease
Period End2021-06-30
Value1.2
Percentage of DecreaseInNetIncomeNetOfTax100.0

psn:DecreaseInOperatingIncome

psn:DecreaseInOperatingIncome


Decrease
Period End2021-06-30
Value1.6
Percentage of DecreaseInOperatingIncome100.0

psn:DistributionsFromContributionsToEquityMethodInvestment us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:DistributionsFromContributionsToEquityMethodInvestment

psn:UnconsolidatedJointVentures


Distributions
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-29
Value7.3115.66.510138.58.113203.8
Percentage of DistributionsFromContributionsToEquityMethodInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:EquityBasedCompensationIncomeExpense

psn:EquityBasedCompensationIncomeExpense


Equity
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-4921000.0-6980000.0991000.0-12854000.07721000.01657000.0-43311000.0-3850000.0
Percentage of EquityBasedCompensationIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0

psn:IncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities

psn:IncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-28.613-68.928-45.496702.353-24.336382241-24.023202231-44.016
Percentage of IncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:IncreaseDecreaseInPrepaidExpenseAndCurrentAssets

psn:IncreaseDecreaseInPrepaidExpenseAndCurrentAssets


Increase
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-8.648-2.7673.76625-7.9473.5431.42410-13.43-0.6827
Percentage of IncreaseDecreaseInPrepaidExpenseAndCurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:MinorityInterestIncreaseDecreaseFromContributionsToNoncontrollingInterestHolders

psn:MinorityInterestIncreaseDecreaseFromContributionsToNoncontrollingInterestHolders


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value0.8650.0071.7240.2680.0020.2211.0940.8527.4390.7086.8880.1154.3946.497
Percentage of MinorityInterestIncreaseDecreaseFromContributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:MinorityInterestIncreaseDecreaseFromContributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value0.8650.0071.7240.2680.0020.2211.0940.8527.4390.7086.8880.1154.3946.497
Percentage of MinorityInterestIncreaseDecreaseFromContributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:MinorityInterestIncreaseDecreaseFromDistributionsToNoncontrollingInterestHolders

psn:MinorityInterestIncreaseDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2.8641.245-0.36145.638-18.278
Percentage of MinorityInterestIncreaseDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0

psn:MinorityInterestIncreaseDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2.8641.245-0.36145.638-18.278
Percentage of MinorityInterestIncreaseDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0

psn:NetDistributionsFromAndSalesProceedsToEquityMethodInvestment us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:NetDistributionsFromAndSalesProceedsToEquityMethodInvestment

psn:UnconsolidatedJointVentures


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.55.45.66.5
Percentage of NetDistributionsFromAndSalesProceedsToEquityMethodInvestment100.0100.0100.0100.0

psn:NumberOfCommonStockAcquiredByOffsettingSaleWarrants us-gaap:LongtermDebtType

psn:NumberOfCommonStockAcquiredByOffsettingSaleWarrants

us-gaap:ConvertibleDebt


Number
Period End2021-06-302021-03-312020-12-31
Value08900000.00
Percentage of NumberOfCommonStockAcquiredByOffsettingSaleWarrants0.0100.00.0

psn:OtherIncomeExpense

psn:OtherIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-4.353-6.234-5.174-3.734-3.248-4.246-4.793-7.609-4.645-7.774-8.021-4.89372-4.436
Percentage of OtherIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:OtherReconciliationFromNetIncomeToAdjustedEBITDA

psn:OtherReconciliationFromNetIncomeToAdjustedEBITDA


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value1389000.0491000.0-151000.0140000.0589000.0581000.03182000.0-902000.0366000.011000.02009000.03449000.0-223000.0366000.0
Percentage of OtherReconciliationFromNetIncomeToAdjustedEBITDA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:PaymentOfConvertibleNotesIssuanceTransactionCosts

psn:PaymentOfConvertibleNotesIssuanceTransactionCosts


Payment
Period End2020-12-31
Value-0.057
Percentage of PaymentOfConvertibleNotesIssuanceTransactionCosts100.0

psn:PaymentsForTaxesPaidOnVestedStock

psn:PaymentsForTaxesPaidOnVestedStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value02242000.00001149000.000
Percentage of PaymentsForTaxesPaidOnVestedStock0.0100.00.00.00.0100.00.00.0

psn:PercentageOfBondHedgeAndWarrantTransactionsIncreasedConversionPrice us-gaap:Range, us-gaap:LongtermDebtType

psn:PercentageOfBondHedgeAndWarrantTransactionsIncreasedConversionPrice

srt:Maximum, us-gaap:ConvertibleDebt


Percentage
Period End2020-08-31
Value100.0
Percentage of PercentageOfBondHedgeAndWarrantTransactionsIncreasedConversionPrice100.0

srt:Minimum, us-gaap:ConvertibleDebt


Percentage
Period End2020-08-31
Value35.0
Percentage of PercentageOfBondHedgeAndWarrantTransactionsIncreasedConversionPrice35.0

psn:ReimbursableCostIncurred us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ReimbursableCostIncurred

us-gaap:MajorityOwnedSubsidiaryUnconsolidated


Reimbursable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value3031353234311190.02050.0390.02721110.02820.03110.0259
Percentage of ReimbursableCostIncurred100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:RestructuringIncomeExpense

psn:RestructuringIncomeExpense


Restructuring
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-73000.0-77000.0-365000.0-1143000.033000.0-309000.0-353000.0-2218000.0
Percentage of RestructuringIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0

psn:TransactionRelatedCosts

psn:TransactionRelatedCosts


Transaction
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value4.0862.6467.9852.411-2.485127.3929.8917.7159.3555.4312.4564.930.125
Percentage of TransactionRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt


Adjustments
Period End2020-12-312020-09-30
Value0.053
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt0.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2020-12-312020-09-30
Value0.053
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt0.0100.0

us-gaap:Parent


Adjustments
Period End2020-12-312020-09-30
Value0.053
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt0.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued


Adjustments
Period End2020-12-312020-09-30
Value0.013
Percentage of AdjustmentsToAdditionalPaidInCapitalWarrantIssued0.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2020-12-312020-09-30
Value0.013
Percentage of AdjustmentsToAdditionalPaidInCapitalWarrantIssued0.0100.0

us-gaap:Parent


Adjustments
Period End2020-12-312020-09-30
Value0.013
Percentage of AdjustmentsToAdditionalPaidInCapitalWarrantIssued0.0100.0

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss

psn:BraxtonScienceTechnologyGroup


Business
Period End2021-03-312020-03-31
Value1514
Percentage of BusinessAcquisitionsProFormaNetIncomeLoss100.0100.0

us-gaap:BusinessAcquisitionsProFormaRevenue us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionsProFormaRevenue

psn:BraxtonScienceTechnologyGroup


Business
Period End2021-06-302021-03-312020-06-302020-03-31
Value87987410031001
Percentage of BusinessAcquisitionsProFormaRevenue100.0100.0100.0100.0

psn:OGSystems


Business
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-29
Value1004979970103710239859069611007925
Percentage of BusinessAcquisitionsProFormaRevenue0.097.697.00.00.00.00.00.00.00.0

psn:QRCTechnologies


Business
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-28
Value1004979970103710261001910939987
Percentage of BusinessAcquisitionsProFormaRevenue0.097.697.00.00.00.00.00.00.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts us-gaap:BusinessAcquisition, us-gaap:IncomeStatementLocation

us-gaap:BusinessCombinationAcquisitionRelatedCosts

psn:BraxtonScienceTechnologyGroup, us-gaap:SellingGeneralAndAdministrativeExpenses


Business
Period End2021-06-302021-03-31
Value0600000.0
Percentage of BusinessCombinationAcquisitionRelatedCosts0.0100.0

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress


Contract
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-28
Value-20.8270.027-0.1349.00.03.09.10.00.00.00.0
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress100.0100.0100.0100.00.0100.0100.00.00.00.00.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value23695.2000000000000159.52894142.12785680.87326
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger us-gaap:LongtermDebtType

us-gaap:DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger

us-gaap:ConvertibleDebt


Debt
Period End2020-08-31
Value130.0
Percentage of DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger100.0

us-gaap:DebtInstrumentInterestRateDuringPeriod us-gaap:LongtermDebtType, us-gaap:SubsidiarySaleOfStock

us-gaap:DebtInstrumentInterestRateDuringPeriod

psn:SeriesASeniorNote, us-gaap:PrivatePlacement


Debt
Period End2020-12-312014-07-01
Value04.44
Percentage of DebtInstrumentInterestRateDuringPeriod0.0100.0

psn:SeriesBSeniorNote, us-gaap:PrivatePlacement


Debt
Period End2020-12-312014-07-01
Value04.98
Percentage of DebtInstrumentInterestRateDuringPeriod0.0112.2

psn:SeriesCSeniorNote, us-gaap:PrivatePlacement


Debt
Period End2020-12-312014-07-01
Value05.13
Percentage of DebtInstrumentInterestRateDuringPeriod0.0115.5

psn:SeriesDSeniorNote, us-gaap:PrivatePlacement


Debt
Period End2020-12-312014-07-01
Value05.38
Percentage of DebtInstrumentInterestRateDuringPeriod0.0121.2

us-gaap:DebtInstrumentPeriodicPayment us-gaap:LongtermDebtType, us-gaap:SubsidiarySaleOfStock

us-gaap:DebtInstrumentPeriodicPayment

us-gaap:SeniorNotes, us-gaap:PrivatePlacement


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6.26.20.06.26.26.20.06.2
Percentage of DebtInstrumentPeriodicPayment100.0100.00.0100.0100.0100.00.0100.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value9.59.6109.59.89.69.18.99.79.78.48.87.97.2
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value343432303232333131302323149.009
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther

us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther


Dilutive
Period End2021-06-302021-03-312020-09-30
Value531000.0528000.01164000.0
Percentage of DilutiveSecuritiesEffectOnBasicEarningsPerShareOther100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value581000.0430000.0892000.0572000.0538000.0-1179000.0-341000.0-351000.0-420000.0-182000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate


Effective
Period End2021-06-302021-03-312020-09-302019-12-312019-09-302019-06-302019-03-31
Value21.021.021.000.210.210.21
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate100.0100.0100.00.0100.0100.0100.0

us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense

psn:DirectCostsOfContractsAndIndirectGeneralAndAdministrativeExpense


Employee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value131214141812121211111111
Percentage of EmployeeStockOwnershipPlanESOPCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:DirectCostsOfContractsAndSellingGeneralAndAdministrativeExpense


Employee
Period End2021-06-302021-03-312020-06-302020-03-31
Value13131414
Percentage of EmployeeStockOwnershipPlanESOPCompensationExpense0.00.0100.0100.0

us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:EquityMethodInvestmentDividendsOrDistributions


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value4.9521310159.3426.55118174.229103.46419-2.6815
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentSoldCarryingAmount

us-gaap:EquityMethodInvestmentSoldCarryingAmount


Equity
Period End2021-06-30
Value1.6
Percentage of EquityMethodInvestmentSoldCarryingAmount100.0

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value28000.029000.037000.064000.022000.012000.031000.015000.015000.016000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeaseInterestPaymentOnLiability


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value28000.030000.036000.065000.021000.025000.031000.015000.015000.016000.0
Percentage of FinanceLeaseInterestPaymentOnLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value540000.0480000.0471000.0527000.0275000.0278000.0339000.0524000.0-246000.0246000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value543000.0474000.0460000.0531000.0251000.0254000.0291000.0120000.0110000.0225000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinitelivedIntangibleAssetsAcquired1 us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FinitelivedIntangibleAssetsAcquired1

psn:BraxtonScienceTechnologyGroup, us-gaap:CustomerRelationships


Finitelived
Period End2020-11-19
Value35
Percentage of FinitelivedIntangibleAssetsAcquired1100.0

psn:BraxtonScienceTechnologyGroup, us-gaap:DevelopedTechnologyRights


Finitelived
Period End2020-11-19
Value1.1
Percentage of FinitelivedIntangibleAssetsAcquired13.1

psn:BraxtonScienceTechnologyGroup, us-gaap:NoncompeteAgreements


Finitelived
Period End2020-11-19
Value0.65
Percentage of FinitelivedIntangibleAssetsAcquired11.8

psn:BraxtonScienceTechnologyGroup, us-gaap:OrderOrProductionBacklog


Finitelived
Period End2020-11-19
Value36
Percentage of FinitelivedIntangibleAssetsAcquired1102.8

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-175000.0-2220000.0924000.0754000.0198000.0-1383000.0-2783000.0-2041000.0970000.0-618000.0-3217000.0-374000.0-2090000.0457000.0
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-30000.0-267000.0-138000.0-21000.0-61000.0104000.03000.0-1069000.0-3000.027000.0-721000.0-6000.0-35000.0-18000.0
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillAcquiredDuringPeriod

us-gaap:GoodwillAcquiredDuringPeriod


Goodwill
Period End2021-03-312019-03-31
Value1.953183
Percentage of GoodwillAcquiredDuringPeriod100.0100.0

us-gaap:GoodwillAcquiredDuringPeriod us-gaap:StatementBusinessSegments

psn:FederalSolutionSegment


Goodwill
Period End2021-03-312019-03-31
Value1.953183
Percentage of GoodwillAcquiredDuringPeriod100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1210000.01164000.02048000.01109000.01330000.0-3411000.0644000.0-713000.01333000.0659000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss us-gaap:StatementBusinessSegments

psn:CriticalInfrastructureSegment


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1210000.01164000.02048000.01109000.01330000.0-3411000.0644000.0-713000.01333000.0659000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value9.4287.533.435163.7696.114127.274111011121.83911
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value9.4287.533.435163.7696.114127.274111011121.83911
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerAsset


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-40.07131-44.174-35.8081852-9.1628.3193.85846-47.67825-29.062531
Percentage of IncreaseDecreaseInContractWithCustomerAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value10-16.086-11.58-7.047-22.46311-0.5579.239-3.4214363.852-134.912299
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxes

us-gaap:IncreaseDecreaseInIncomeTaxes


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-3670000.01268000.03681000.0-10809000.010260000.0-6212000.0-2402000.04204000.0-3578000.0-3645000.0661000.0272000.03575000.0-597000.0
Percentage of IncreaseDecreaseInIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value8.287-19.312-12.9621314-43.09915-6.95932-12.2657.9743.009-1.11610
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value5.7675.386-2.7673.766
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToConversionOfDebtSecurities

us-gaap:IncrementalCommonSharesAttributableToConversionOfDebtSecurities


Incremental
Period End2021-06-302021-03-312020-09-30
Value8916500.08916500.04458300.0
Percentage of IncrementalCommonSharesAttributableToConversionOfDebtSecurities100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value744320.0573050.035930.0378490.0290650.0229630.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value152000.098000.0275000.088000.0196000.0228000.0171000.0427000.0225000.0477000.0352000.0351000.01266000.0741000.0
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value18182019192016222019
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossAttributableToParentDiluted

us-gaap:NetIncomeLossAttributableToParentDiluted


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value7.2339.567214123121356
Percentage of NetIncomeLossAttributableToParentDiluted100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value16161715151716171718
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value16161614141610171618
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value3012000.04914000.04254000.01926000.03104000.0-8800000.03460000.0171000.02240000.02547000.0-4721000.02303000.0-2598000.0-2784000.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value3013000.04909000.04254000.01922000.03100000.0-8792000.03457000.0171000.02240000.02547000.0-4835000.02294000.0-2576000.0-2781000.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.099.9100.099.899.999.999.9100.0100.0100.0102.499.699.299.9

us-gaap:NoncontrollingInterest


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-1000.05000.04000.04000.0-8000.03000.0000114000.09000.0-22000.0-3000.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax-0.00.10.20.10.10.10.00.00.0-2.40.40.80.1

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value3013000.04909000.04254000.01922000.03100000.0-8792000.03457000.0171000.02240000.02547000.0-4835000.02294000.0-2576000.0-2781000.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.099.9100.099.899.999.999.9100.0100.0100.0102.499.699.299.9

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-19000.0-19000.070000.0-20000.0-23000.061000.0-264000.09000.0-17000.0-9000.029000.0-10000.018000.019000.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-19000.0-19000.070000.0-20000.0-23000.061000.0-264000.09000.0-17000.0-9000.029000.0-10000.018000.019000.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-19000.0-19000.070000.0-20000.0-23000.061000.0-264000.09000.0-17000.0-9000.029000.0-10000.018000.019000.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash

us-gaap:OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value1313131214141612121211111111
Percentage of OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForHedgeFinancingActivities

us-gaap:PaymentsForHedgeFinancingActivities


Payments
Period End2020-12-31
Value0.0
Percentage of PaymentsForHedgeFinancingActivities0.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

psn:BraxtonScienceTechnologyGroup


Payments
Period End2020-11-19
Value310
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

psn:BlackHorseSolutionsInc, us-gaap:SubsequentEvent


Payments
Period End2021-07-06
Value203
Percentage of PaymentsToAcquireBusinessesGross0.0

psn:BraxtonScienceAndTechnologyGroupLLC, us-gaap:SubsequentEvent


Payments
Period End2020-10-29
Value300
Percentage of PaymentsToAcquireBusinessesGross0.0

psn:EchoRidgeLLC, us-gaap:SubsequentEvent


Payments
Period End2021-07-30
Value9.0
Percentage of PaymentsToAcquireBusinessesGross0.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value0.808-1.0640.00.0-0.8642080.02870.00.04810.0
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.00.00.0100.0100.00.0100.00.00.0100.00.0

us-gaap:PaymentsToAcquireInterestInJointVenture

us-gaap:PaymentsToAcquireInterestInJointVenture


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value4.133223.0694.1253.7940.05136.3970.1444.9050.4440.0651.1533.058
Percentage of PaymentsToAcquireInterestInJointVenture100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToMinorityShareholders

us-gaap:PaymentsToMinorityShareholders


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value128.9891.3472.8641.2450.366.907141.8011812
Percentage of PaymentsToMinorityShareholders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromConvertibleDebt

us-gaap:ProceedsFromConvertibleDebt


Proceeds
Period End2020-12-31
Value0.0
Percentage of ProceedsFromConvertibleDebt0.0

us-gaap:ProceedsFromDebtNetOfIssuanceCosts us-gaap:LongtermDebtType

us-gaap:ProceedsFromDebtNetOfIssuanceCosts

us-gaap:ConvertibleDebt


Proceeds
Period End2020-08-31
Value389
Percentage of ProceedsFromDebtNetOfIssuanceCosts100.0

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value0.6110.1160.0360.00.0170.05.7782.2292.1692.234101.1260.00.0
Percentage of ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2020-12-312020-09-302019-12-312019-09-30
Value2.7020.00.0-0.452
Percentage of ProceedsFromIssuanceOfCommonStock100.00.00.0100.0

us-gaap:ProceedsFromIssuanceOfWarrants

us-gaap:ProceedsFromIssuanceOfWarrants


Proceeds
Period End2020-12-31
Value0.0
Percentage of ProceedsFromIssuanceOfWarrants0.0

us-gaap:ProceedsFromIssuanceOfWarrants us-gaap:LongtermDebtType

us-gaap:ConvertibleDebt


Proceeds
Period End2021-06-302021-03-312020-12-31
Value0.0130.0
Percentage of ProceedsFromIssuanceOfWarrants0.00.00.0

us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProceedsFromLinesOfCredit


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value0.0324913167180602900.00.02600.0
Percentage of ProceedsFromLinesOfCredit0.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0

us-gaap:ProceedsFromMinorityShareholders

us-gaap:ProceedsFromMinorityShareholders


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.8650.0071.7240.2680.0020.2211.0940.8527.4390.7086.888
Percentage of ProceedsFromMinorityShareholders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfEquityMethodInvestments

us-gaap:ProceedsFromSaleOfEquityMethodInvestments


Proceeds
Period End2021-06-302021-03-31
Value0.03514
Percentage of ProceedsFromSaleOfEquityMethodInvestments100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value220000.0164000.0493000.0110000.0458000.0485000.0965000.0951000.01738000.0135000.0327000.0083000.029000.0
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value-1.5570.0160.0380.01.254-0.098-0.587-0.279-3.8392.634.0382.426
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty

us-gaap:MajorityOwnedSubsidiaryUnconsolidated


Related
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282018-06-292018-03-30
Value4042474242401570.02880.05070.03361440.03660.04190.0337
Percentage of RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfDebt us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:RepaymentsOfDebt

psn:SeriesASeniorNote, us-gaap:SubsequentEvent


Repayments
Period End2021-07-31
Value50
Percentage of RepaymentsOfDebt100.0

us-gaap:RepaymentsOfLinesOfCredit

us-gaap:RepaymentsOfLinesOfCredit


Repayments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-30
Value0.032114666718047060600.0
Percentage of RepaymentsOfLinesOfCredit0.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-28
Value718000.0365000.01143000.0-33000.0544000.0309000.0353000.02218000.00
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability


Right
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value212000.0619000.0001306000.00477000.01341000.0
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability100.0100.00.00.0100.00.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.4634.8654.3622.5531.9281525204.236249
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.2642.0323.374.3014.3013.6511.0635.4293.4922.004
Percentage of ShortTermLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SubleaseIncome

us-gaap:SubleaseIncome


Sublease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value793000.0776000.0960000.0959000.0932000.0880000.0893000.0712000.01085000.0930000.0
Percentage of SubleaseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:AccruedExpensesAndOtherCurrentLiabilities

psn:AccruedExpensesAndOtherCurrentLiabilities


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value582595650725642625639639602547559
Percentage of AccruedExpensesAndOtherCurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:AccruedExpensesAndOtherCurrentLiabilities us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value707568141112907463657173
Percentage of AccruedExpensesAndOtherCurrentLiabilities12.012.710.619.517.414.511.710.010.813.113.1

psn:BilledReceivablesCurrent

psn:BilledReceivablesCurrent


Billed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value458521512527487544494516613534538
Percentage of BilledReceivablesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpensesAndOtherLiabilities us-gaap:BusinessAcquisition

psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpensesAndOtherLiabilities

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value9.734
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpensesAndOtherLiabilities100.0

psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesLongTermLeaseLiabilities us-gaap:BusinessAcquisition

psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesLongTermLeaseLiabilities

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value5791000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesLongTermLeaseLiabilities100.0

psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesRightOfUseAssets us-gaap:BusinessAcquisition

psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesRightOfUseAssets

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value7553000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesRightOfUseAssets100.0

psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesShortTermLeaseLiabilities us-gaap:BusinessAcquisition

psn:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesShortTermLeaseLiabilities

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value1762000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeasesShortTermLeaseLiabilities100.0

psn:CarryingAmountOfConvertibleSeniorNotesAdjustedInRetainedEarnings us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:LongtermDebtType

psn:CarryingAmountOfConvertibleSeniorNotesAdjustedInRetainedEarnings

psn:AccountingStandardsUpdate202006, us-gaap:ConvertibleDebt


Carrying
Period End2021-01-01
Value3700000.0
Percentage of CarryingAmountOfConvertibleSeniorNotesAdjustedInRetainedEarnings100.0

psn:ContractReceivableRetainageAssetLiabilitiesNetDueAfterOneYear

psn:ContractReceivableRetainageAssetLiabilitiesNetDueAfterOneYear


Contract
Period End2021-06-302021-03-312020-12-312020-09-30
Value50414342
Percentage of ContractReceivableRetainageAssetLiabilitiesNetDueAfterOneYear100.0100.0100.0100.0

psn:ContractReceivableRetainageAssetsLiabilitiesNet

psn:ContractReceivableRetainageAssetsLiabilitiesNet


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value949293898985
Percentage of ContractReceivableRetainageAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0

psn:ContractWithCustomerAssetLiabilityNet

psn:ContractWithCustomerAssetLiabilityNet


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value371421374398426385344352354346306
Percentage of ContractWithCustomerAssetLiabilityNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:DebtInstrumentConvertibleDebtLiability us-gaap:LongtermDebtType

psn:DebtInstrumentConvertibleDebtLiability

us-gaap:ConvertibleDebt


Debt
Period End2020-08-31
Value336
Percentage of DebtInstrumentConvertibleDebtLiability100.0

psn:DebtInstrumentConvertibleNotesAdditionalPaidInCapital us-gaap:LongtermDebtType

psn:DebtInstrumentConvertibleNotesAdditionalPaidInCapital

us-gaap:ConvertibleDebt


Debt
Period End2020-08-31
Value53
Percentage of DebtInstrumentConvertibleNotesAdditionalPaidInCapital100.0

psn:DebtInstrumentConvertiblePrincipalAmount us-gaap:LongtermDebtType

psn:DebtInstrumentConvertiblePrincipalAmount

us-gaap:ConvertibleDebt


Debt
Period End2020-08-31
Value1000.0
Percentage of DebtInstrumentConvertiblePrincipalAmount100.0

psn:DeferredTaxAssetsLeaseLiability

psn:DeferredTaxAssetsLeaseLiability


Deferred
Period End2020-12-312019-12-312018-12-31
Value62680.205
Percentage of DeferredTaxAssetsLeaseLiability100.0100.0100.0

psn:DeferredTaxAssetsRevenueAndCostRecognition

psn:DeferredTaxAssetsRevenueAndCostRecognition


Deferred
Period End2020-12-312019-12-31
Value2533
Percentage of DeferredTaxAssetsRevenueAndCostRecognition100.0100.0

psn:DeferredTaxAssetsTaxDeferredExpenseProjectAndNonProjectReserves

psn:DeferredTaxAssetsTaxDeferredExpenseProjectAndNonProjectReserves


Deferred
Period End2020-12-312019-12-312018-12-31
Value33342.326
Percentage of DeferredTaxAssetsTaxDeferredExpenseProjectAndNonProjectReserves100.0100.0100.0

psn:FinanceLeaseLiabilityPaymentsDueAfterYearFour

psn:FinanceLeaseLiabilityPaymentsDueAfterYearFour


Finance
Period End2021-06-30
Value3000.0
Percentage of FinanceLeaseLiabilityPaymentsDueAfterYearFour100.0

psn:FinanceLeaseRightOfUseAssetsAccumulatedDepreciation

psn:FinanceLeaseRightOfUseAssetsAccumulatedDepreciation


Finance
Period End2020-12-312019-12-31
Value2200000.0700000.0
Percentage of FinanceLeaseRightOfUseAssetsAccumulatedDepreciation100.0100.0

psn:FinanceLeasesOtherAssetsNoncurrent

psn:FinanceLeasesOtherAssetsNoncurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value3414000.03526000.03363000.02757000.01876000.02123000.02377000.0
Percentage of FinanceLeasesOtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0

psn:FiniteLivedIntangibleAssetsAmortizableAmount

psn:FiniteLivedIntangibleAssetsAmortizableAmount


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value196220244192
Percentage of FiniteLivedIntangibleAssetsAmortizableAmount100.0100.0100.0100.0

psn:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour

psn:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour


Finite
Period End2021-06-302021-03-312020-09-30
Value343421
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour100.0100.0100.0

psn:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour

psn:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour


Lessee
Period End2021-06-302021-03-312020-09-30
Value302955
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour100.0100.0100.0

psn:LongTermEmployeeIncentives

psn:LongTermEmployeeIncentives


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2321212122215645542941
Percentage of LongTermEmployeeIncentives100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

psn:NetCostOfPurchaseOfBondHedgesAndSaleOfWarrants us-gaap:LongtermDebtType

psn:NetCostOfPurchaseOfBondHedgesAndSaleOfWarrants

psn:ConvertibleNoteHedgeAndWarrantTransaction


Net
Period End2020-08-31
Value41
Percentage of NetCostOfPurchaseOfBondHedgesAndSaleOfWarrants100.0

psn:OtherLiabilitiesNoncurrent1

psn:OtherLiabilitiesNoncurrent1


Other
Period End2020-12-312019-12-312018-12-31
Value207.5541.259
Percentage of OtherLiabilitiesNoncurrent1100.0100.0100.0

psn:ProjectCostAccrualsCurrent

psn:ProjectCostAccrualsCurrent


Project
Period End2020-12-312019-12-312018-12-31
Value164217183
Percentage of ProjectCostAccrualsCurrent100.0100.0100.0

psn:ReclassificationOfEquityComponentOfConvertibleSeniorNotesToLiabilities us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:LongtermDebtType

psn:ReclassificationOfEquityComponentOfConvertibleSeniorNotesToLiabilities

psn:AccountingStandardsUpdate202006, us-gaap:ConvertibleDebt


Reclassification
Period End2021-03-31
Value55
Percentage of ReclassificationOfEquityComponentOfConvertibleSeniorNotesToLiabilities100.0

psn:ReclassificationOfEquityComponentOfDebtIssuanceCostsToLiabilities us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:LongtermDebtType

psn:ReclassificationOfEquityComponentOfDebtIssuanceCostsToLiabilities

psn:AccountingStandardsUpdate202006, us-gaap:ConvertibleDebt


Reclassification
Period End2021-03-31
Value1400000.0
Percentage of ReclassificationOfEquityComponentOfDebtIssuanceCostsToLiabilities100.0

us-gaap:AccountsReceivableGrossCurrent

us-gaap:AccountsReceivableGrossCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value641697702780722764713716779698673
Percentage of AccountsReceivableGrossCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableRelatedPartiesCurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:AccountsReceivableRelatedPartiesCurrent

psn:UnconsolidatedJointVentures


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3034373540353744333038
Percentage of AccountsReceivableRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedEmployeeBenefitsCurrent

us-gaap:AccruedEmployeeBenefitsCurrent


Accrued
Period End2020-12-312019-12-312018-12-31
Value293259214
Percentage of AccruedEmployeeBenefitsCurrent100.0100.0100.0

us-gaap:AccruedInsuranceCurrent

us-gaap:AccruedInsuranceCurrent


Accrued
Period End2020-12-312019-12-312018-12-31
Value322929
Percentage of AccruedInsuranceCurrent100.0100.0100.0

us-gaap:AccruedSalariesCurrent

us-gaap:AccruedSalariesCurrent


Accrued
Period End2020-12-312019-12-312018-12-31
Value724650
Percentage of AccruedSalariesCurrent100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3.9993.9994.0015.5575.5416.4974142454650
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


Assets
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value141313141313
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Assets
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3.4183.3213.1823.1582.9792.9
Percentage of AssetsFairValueDisclosure24.424.123.122.521.822.2

us-gaap:FairValueInputsLevel2


Assets
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value101010101010
Percentage of AssetsFairValueDisclosure75.675.976.977.578.277.8

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentType

us-gaap:FairValueInputsLevel1, us-gaap:CashAndCashEquivalents


Assets
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.5710.3340.2940.2820.2640.361
Percentage of AssetsFairValueDisclosure4.12.42.12.01.92.8

us-gaap:FairValueInputsLevel1, us-gaap:MutualFund


Assets
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.8472.9872.8882.8762.7152.539
Percentage of AssetsFairValueDisclosure20.321.721.020.519.919.4

us-gaap:FairValueInputsLevel2, us-gaap:FixedIncomeFunds


Assets
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value101010101010
Percentage of AssetsFairValueDisclosure75.675.976.977.578.277.8

us-gaap:AssetsFairValueDisclosure us-gaap:InvestmentType

us-gaap:CashAndCashEquivalents


Assets
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.5710.3340.2940.2820.2640.361
Percentage of AssetsFairValueDisclosure4.12.42.12.01.92.8

us-gaap:FixedIncomeFunds


Assets
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value101010101010
Percentage of AssetsFairValueDisclosure75.675.976.977.578.277.8

us-gaap:MutualFund


Assets
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.8472.9872.8882.8762.7152.539
Percentage of AssetsFairValueDisclosure20.321.721.020.519.919.4

us-gaap:BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value195
Percentage of BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value8042000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value3036000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value18
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value7.464
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value1714000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value73
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value310
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

psn:BraxtonScienceTechnologyGroup


Business
Period End2020-11-19
Value5130000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-29
Value484399487617136126195146211130281446
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerAssetNet


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value568607576610645626575583576571515
Percentage of ContractWithCustomerAssetNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerAssetNetCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value568607576610645626575583576571515
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetCurrent us-gaap:BusinessAcquisition

psn:BraxtonScienceTechnologyGroup


Contract
Period End2020-11-19
Value8.35
Percentage of ContractWithCustomerAssetNetCurrent0.0

us-gaap:ContractWithCustomerAssetNetCurrent us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2524232927272626252321
Percentage of ContractWithCustomerAssetNetCurrent4.44.04.14.84.24.34.64.54.54.24.1

us-gaap:ContractWithCustomerAssetNetCurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

psn:UnconsolidatedJointVentures


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9.161118.8895.7033.3097.8766.9552.7345.2013.5272.648
Percentage of ContractWithCustomerAssetNetCurrent1.61.91.50.90.51.31.20.50.90.60.5

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value196186201212219241230231222225208
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractsReceivableClaimsAndUncertainAmounts

us-gaap:ContractsReceivableClaimsAndUncertainAmounts


Contracts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10311711696103877358564947
Percentage of ContractsReceivableClaimsAndUncertainAmounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConvertibleDebt us-gaap:LongtermDebtType

us-gaap:ConvertibleDebt

us-gaap:ConvertibleDebt


Convertible
Period End2021-06-302021-03-312020-12-312020-09-30
Value400400340337
Percentage of ConvertibleDebt100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:LongtermDebtType

us-gaap:DebtInstrumentCarryingAmount

us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value200200200200250250250250250250250
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:StatementScenario, us-gaap:ShortTermDebtType

srt:ScenarioForecast, psn:TermLoan


Debt
Period End2020-12-31
Value0.0
Percentage of DebtInstrumentCarryingAmount0.0

us-gaap:DebtInstrumentConvertibleConversionPrice1 us-gaap:Range, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentConvertibleConversionPrice1

srt:Maximum, us-gaap:ConvertibleDebt


Debt
Period End2020-08-31
Value66.46
Percentage of DebtInstrumentConvertibleConversionPrice1100.0

srt:Minimum, us-gaap:ConvertibleDebt


Debt
Period End2020-08-31
Value44.86
Percentage of DebtInstrumentConvertibleConversionPrice167.5

us-gaap:DebtInstrumentFeeAmount us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFeeAmount

us-gaap:ConvertibleDebt


Debt
Period End2020-08-31
Value10
Percentage of DebtInstrumentFeeAmount100.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateEffectivePercentage

us-gaap:ConvertibleDebt


Debt
Period End2020-08-31
Value3.25
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0

us-gaap:DebtInstrumentUnamortizedDiscount us-gaap:LongtermDebtType

us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:ConvertibleDebt


Debt
Period End2020-12-312020-09-30
Value5962
Percentage of DebtInstrumentUnamortizedDiscount100.0100.0

us-gaap:DebtInstrumentUnamortizedDiscountNoncurrent

us-gaap:DebtInstrumentUnamortizedDiscountNoncurrent


Debt
Period End2020-12-312020-09-30
Value5153
Percentage of DebtInstrumentUnamortizedDiscountNoncurrent100.0100.0

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DebtLongtermAndShorttermCombinedAmount


Debt
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-03-312018-12-31
Value640640589587249658429
Percentage of DebtLongtermAndShorttermCombinedAmount100.0100.0100.0100.0100.0100.0100.0

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible


Decrease
Period End2021-06-302021-03-312020-12-312020-09-30
Value200000.0200000.0300000.01000000.0
Percentage of DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsNet us-gaap:SubsidiarySaleOfStock

us-gaap:DeferredFinanceCostsNet

us-gaap:PrivatePlacement


Deferred
Period End2020-12-312020-09-302020-08-102020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-08-102014-07-01
Value1100000.01100000.0500000.01100000.01100000.01100000.01100000.01100000.01100000.0500000.01100000.0
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value147143130130129124130111704.8915.68
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-31
Value8710516
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-31
Value20522615
Percentage of DeferredTaxAssetsGross100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-31
Value9.6741614
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:ForeignCountry


Deferred
Period End2020-12-312019-12-31
Value3641
Percentage of DeferredTaxAssetsOperatingLossCarryforwards379.4253.0

us-gaap:StateAndLocalJurisdiction


Deferred
Period End2020-12-312019-12-31
Value3228
Percentage of DeferredTaxAssetsOperatingLossCarryforwards339.1172.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration

us-gaap:ForeignCountry


Deferred
Period End2020-12-312019-12-31
Value3335
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration100.0100.0

us-gaap:StateAndLocalJurisdiction


Deferred
Period End2020-12-312019-12-31
Value2726
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration79.674.9

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-31
Value3296000.03318000.02240000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-31
Value158.9690.377
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign


Deferred
Period End2020-12-31
Value6900000.0
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsForeign100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits


Deferred
Period End2020-12-312019-12-312018-12-31
Value61591.609
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance


Deferred
Period End2020-12-312019-12-312018-12-31
Value17190.962
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-31
Value15292.529
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesLeasingArrangements


Deferred
Period End2020-12-312019-12-31
Value5663
Percentage of DeferredTaxLiabilitiesLeasingArrangements100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-31
Value16133.367
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent us-gaap:BalanceSheetLocation

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

us-gaap:OtherNoncurrentAssets


Defined
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2000000.02100000.01700000.01700000.01700000.01700000.0
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2020-12-31
Value16
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value3216000.03336000.03194000.02592000.0
Percentage of FinanceLeaseLiability100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1598000.01596000.01461000.01345000.01031000.01056000.01075000.0
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1618000.01740000.01733000.01247000.0695000.0943000.01202000.0935000.0
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value3321000.03458000.03331000.02731000.0
Percentage of FinanceLeaseLiabilityPaymentsDue100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value1358000.01240000.01547000.01291000.0
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive


Finance
Period End2020-12-31
Value74000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFive100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value106000.087000.0185000.08000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value274000.0212000.0533000.0316000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value684000.0605000.0992000.0735000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear


Finance
Period End2021-06-302021-03-312020-09-30
Value896000.01314000.0381000.0
Percentage of FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value105000.0122000.0137000.0139000.0
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2020-12-312019-12-31
Value3400000.02400000.0
Percentage of FinanceLeaseRightOfUseAsset100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value3.03.33.84.70.0450.0450.045
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value340315291269248226203179157136115
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1331221109989786760524538
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization39.338.737.937.035.934.733.333.633.433.733.8

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8275686154474032262015
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization24.324.023.723.022.121.120.018.116.615.213.2

us-gaap:LeaseAgreements


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.6090.6040.5990.5940.590.5850.580.5760.5710.5660.561
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization0.20.20.20.20.20.30.30.30.40.40.5

us-gaap:NoncompeteAgreements


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.6882.3722.0431.751.4751.20.9250.650.40.20.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization0.80.80.70.70.60.50.50.40.30.10.0

us-gaap:OrderOrProductionBacklog


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1121061019795918780726558
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization32.933.734.736.338.440.543.044.746.348.250.6

us-gaap:OtherIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.2030.2010.1950.1890.1830.1770.170.1620.1580.150.145
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization0.10.10.10.10.10.10.10.10.10.10.1

us-gaap:TradeNames


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8.1678.0677.9677.3926.8176.2425.6675.0924.552.9922.1
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization2.42.62.72.72.72.82.82.82.92.21.8

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2020-12-31
Value35
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value52519781
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear


Finite
Period End2021-06-302021-03-312020-09-30
Value487320
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-31
Value9688000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value9.7139.713129.098
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value12123823
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value38385136
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsGross


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value538538537463463463463460387387294
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value262262264228228228228226178178121
Percentage of FiniteLivedIntangibleAssetsGross48.848.849.249.349.349.349.349.146.246.241.3

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value112112112110110110110111898987
Percentage of FiniteLivedIntangibleAssetsGross21.021.020.923.923.923.923.924.323.023.029.8

us-gaap:InProcessResearchAndDevelopment


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1.81.81.81.81.81.81.80.0
Percentage of FiniteLivedIntangibleAssetsGross0.30.30.30.40.40.40.40.0

us-gaap:NoncompeteAgreements


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4.254.254.253.63.63.63.63.62.42.40.0
Percentage of FiniteLivedIntangibleAssetsGross0.80.80.80.80.80.80.80.80.60.60.0

us-gaap:OrderOrProductionBacklog


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value14714714510910910910910910810880
Percentage of FiniteLivedIntangibleAssetsGross27.427.427.223.623.623.623.623.728.028.027.4

us-gaap:OtherIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.2750.2750.2750.2750.2750.2750.2751.0760.2750.2750.275
Percentage of FiniteLivedIntangibleAssetsGross0.10.10.10.10.10.10.10.20.10.10.1

us-gaap:TradeNames


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8.28.28.28.28.28.28.28.27.47.43.6
Percentage of FiniteLivedIntangibleAssetsGross1.51.51.51.81.81.81.81.81.91.91.2

us-gaap:InterestPayableCurrent us-gaap:BalanceSheetLocation, us-gaap:SubsidiarySaleOfStock

us-gaap:InterestPayableCurrent

psn:AccruedExpensesAndOtherCurrentLiabilities, us-gaap:PrivatePlacement


Interest
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value5500000.02400000.05500000.02400000.02600000.0
Percentage of InterestPayableCurrent100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value58566158
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-06-302021-03-312020-09-30
Value304611
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LettersOfCreditOutstandingAmount


Letters
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value219203193198186193197220234227223
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:CreditFacility

us-gaap:RevolvingCreditFacility


Letters
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value4545444443
Percentage of LettersOfCreditOutstandingAmount20.522.223.322.722.1

us-gaap:LettersOfCreditOutstandingAmount us-gaap:RelatedPartyTransactionsByRelatedParty

psn:ConsolidatedJointVentures


Letters
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6767595965485572797776
Percentage of LettersOfCreditOutstandingAmount30.833.130.730.335.225.027.932.833.833.934.4

us-gaap:LiabilityForUncertainTaxPositionsCurrent

us-gaap:LiabilityForUncertainTaxPositionsCurrent


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value181716141414151411109.9
Percentage of LiabilityForUncertainTaxPositionsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUncertainTaxPositionsNoncurrent

us-gaap:LiabilityForUncertainTaxPositionsNoncurrent


Liability
Period End2020-12-312019-12-312018-12-31
Value16149.89
Percentage of LiabilityForUncertainTaxPositionsNoncurrent100.0100.0100.0

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

us-gaap:RevolvingCreditFacility


Line
Period End2021-06-302021-03-312020-12-312020-09-30
Value550500500500
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity100.0100.0100.0100.0

us-gaap:NotesPayableFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:NotesPayableFairValueDisclosure

us-gaap:FairValueInputsLevel2


Notes
Period End2021-06-302021-03-312020-12-312020-09-30
Value273270275277
Percentage of NotesPayableFairValueDisclosure100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value3.63.63.73.80.0380.0390.04
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndInvestmentsCurrent

us-gaap:RestrictedCashAndInvestmentsCurrent


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1.1451.2333.6063.7267.0417.42312128.5299.0610.974
Percentage of RestrictedCashAndInvestmentsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5100510052005000500051005000510054005300
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation us-gaap:StatementBusinessSegments

psn:CriticalInfrastructureSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1581159014231408153916911634163617731560
Percentage of RevenueRemainingPerformanceObligation31.031.227.428.230.833.232.732.132.829.4

psn:FederalSolutionSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value107110961317117412981319120711981130982
Percentage of RevenueRemainingPerformanceObligation21.021.525.323.526.025.924.223.520.918.5

us-gaap:SelfInsuranceReserveNoncurrent

us-gaap:SelfInsuranceReserveNoncurrent


Self
Period End2020-12-312019-12-312018-12-31
Value9210299
Percentage of SelfInsuranceReserveNoncurrent100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

psn:ServiceAndPerformanceBasedRestrictedStockUnitsRSU


Share
Period End2020-12-312019-12-31
Value556317
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0

psn:ServiceBasedRestrictedStockUnitsRSU


Share
Period End2020-12-312019-12-31
Value374189
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber67.359.5

us-gaap:RestrictedStock


Share
Period End2020-12-312019-12-312018-12-312017-12-292016-12-30
Value6.399249589659534
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber1.178.60.00.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-312019-12-31
Value425506
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber76.3159.5

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

psn:ServiceAndPerformanceBasedRestrictedStockUnitsRSU


Share
Period End2020-12-312019-12-31
Value36.0734.02
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0

psn:ServiceBasedRestrictedStockUnitsRSU


Share
Period End2020-12-312019-12-31
Value36.6834.15
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue101.7100.4

us-gaap:RestrictedStock


Share
Period End2020-12-312019-12-312018-12-312017-12-292016-12-30
Value22.6722.421.3120.1419.85
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue62.965.80.00.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-312019-12-31
Value36.3234.07
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.7100.1

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased

psn:EmployeeStockPurchasePlan


Share
Period End2020-12-31
Value34.53
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:IncomeTaxAuthority

us-gaap:TaxCreditCarryforwardAmount

us-gaap:ForeignCountry


Tax
Period End2020-12-31
Value15
Percentage of TaxCreditCarryforwardAmount100.0

us-gaap:TaxCreditCarryforwardValuationAllowance us-gaap:IncomeTaxAuthority

us-gaap:TaxCreditCarryforwardValuationAllowance

us-gaap:ForeignCountry


Tax
Period End2020-12-31
Value15
Percentage of TaxCreditCarryforwardValuationAllowance100.0

us-gaap:UnbilledReceivablesCurrent

us-gaap:UnbilledReceivablesCurrent


Unbilled
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value183176190252235220218200166164135
Percentage of UnbilledReceivablesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-29
Value4400000.03400000.02000000.01900000.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate


Unrecognized
Period End2020-12-312019-12-312018-12-31
Value15139.9
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesBalance us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:AllowanceForCreditLoss


Valuation
Period End2020-12-312019-12-312018-12-312017-12-292016-12-30
Value4.00141505240
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0

us-gaap:ValuationAllowanceOfDeferredTaxAssets


Valuation
Period End2020-12-312019-12-312018-12-312017-12-292016-12-30
Value23176.6688.8827.444
Percentage of ValuationAllowancesAndReservesBalance596.841.513.216.818.4

Line plots across dimensions of each concept


TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
(None,)
Profit Lossus-gaap: Statement Equity Components
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:BusinessAcquisition
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Business Acquisition
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ContractWithCustomerBasisOfPricing
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Contract With Customer Basis Of Pricing
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementBusinessSegments
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Business Segments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Geographical
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
('psn:CriticalInfrastructureSegment', None)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Business Segments, us-gaap: Subsegments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
('psn:FederalSolutionSegment', None)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Business Segments, us-gaap: Subsegments
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:AmortizationOfIntangibleAssets
us-gaap:BusinessAcquisition
(None,)
Amortization Of Intangible Assetsus-gaap: Business Acquisition
us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical
(None,)
Property Plant And Equipment Netus-gaap: Statement Geographical
us-gaap:Goodwill
us-gaap:StatementBusinessSegments
(None,)
Goodwillus-gaap: Statement Business Segments
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Equity Components
us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents
(None,)
Stock Issued During Period Value New Issuesus-gaap: Statement Equity Components
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents
(None,)
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Valueus-gaap: Statement Equity Components
us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
(None,)
Profit Lossus-gaap: Statement Equity Components