NTCT


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:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfRevenue
us-gaap:ProductOrService

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaid

us-gaap:InterestExpense

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingExpenses

us-gaap:OperatingIncomeLoss

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
us-gaap:StatementGeographical

us-gaap:Revenues

us-gaap:SellingAndMarketingExpense

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:MarketableSecuritiesCurrent

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:InventoryFinishedGoods

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets
us-gaap:IncomeStatementLocation

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet

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:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:ShareRepurchaseProgram

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

ntct:AmortizationofAcquiredIntangibleAssets

ntct:IncreaseDecreaseInOperatingLeaseLiabilities

ntct:IncreaseDecreaseInOperatingLeaseRightOfUseAsset
us-gaap:BusinessAcquisition
ntct:PaymentsOfContingentConsideration
us-gaap:StatementScenario, us-gaap:BusinessAcquisition

ntct:ProceedsFromDivestitureOfBusinessesTransitionalServices

ntct:RestructuringChargesAndOtherAdjustments
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

ntct:TransfersFromInventoryToFixedAssets
us-gaap:AwardType
us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition
us-gaap:StatementEquityComponents

us-gaap:AllowanceForDoubtfulAccountsReceivableRecoveries

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalizedContractCostAmortization

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanServiceCost
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeGainOnDerivative
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLossOnDerivative
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FinitelivedIntangibleAssetsAcquired1

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:InvestmentIncomeInterest

us-gaap:LeaseCost

us-gaap:OperatingLeaseCost

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherNoncashIncomeExpense

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities
us-gaap:BusinessAcquisition

us-gaap:PaymentsForRestructuring
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireIntangibleAssets

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromOtherDeposits

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:SubsequentEventType
us-gaap:RepaymentsOfLinesOfCredit

us-gaap:RestructuringCharges

us-gaap:RestructuringReserveAccrualAdjustment1
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:ShortTermLeaseCost

us-gaap:StockIssued1

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValueAcquiredParValueMethod
us-gaap:StatementEquityComponents

us-gaap:VariableLeaseCost

us-gaap:WeightedAverageNumberOfSharesRestrictedStock

dei:EntityPublicFloat

ntct:DeferredTaxAssetsOperatingLeaseLiability

ntct:DeferredTaxLiabilitiesDepreciation

ntct:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset

ntct:FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour

ntct:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour

ntct:SocialSecurityTaxEmployerDeferralCARESAct

ntct:UnrecognizedAccountsReceivableAndDeferredRevenue

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument, us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument, us-gaap:InvestmentType

us-gaap:BusinessCombinationContingentConsiderationLiability
us-gaap:BusinessAcquisition
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:StatementScenario, us-gaap:BusinessAcquisition

us-gaap:CapitalizedContractCostNet
us-gaap:BalanceSheetLocation

us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument, us-gaap:InvestmentType

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DerivativeAssets
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetsCurrent
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeLiabilities
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilitiesCurrent
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeNotionalAmount

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:FIFOInventoryAmount

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue

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:InventoryRawMaterials

us-gaap:InventoryWorkInProcess

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:LineOfCredit
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherInventoryCapitalizedCosts

us-gaap:PrepaidTaxes

us-gaap:PurchaseObligation

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligationPercentage

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:SubsidiarySaleOfStock
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased

us-gaap:TaxCreditCarryforwardAmount
us-gaap:BalanceSheetLocation, us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:UnamortizedDebtIssuanceExpense
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance
us-gaap:StatementScenario
us-gaap:ValueAddedTaxReceivable

Plots across concepts


IncomeStatement
Income Loss From Continuing Operations 
Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
Expenses
Income Tax Expense Benefit
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Derivative Assets
Current Assets
Marketable Securities Current
NonCurrent Assets
Deferred Income Tax Assets Net
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Derivative Liabilities
Current Liabilities
Accrued Income Taxes Current
Noncurrent Liabilities
Other Liabilities Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Income Loss
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Receivable
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Diluted Shares Outstanding
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
InventoryNet
Inventory Finished Goods
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:CommonStockValue ████████████▇▇▇▇▇▇▇▇▇▇▇▇▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁0.1240.1240.1240.1230.1220.1220.1220.1220.120.120.1190.1190.1170.1170.1170.1160.1160.1160.1160.1150.1140.1140.1140.1140.0510.0510.0510.0510.050.050.050.050.0490.0490.0490.0490.0480.0480.0480.0480.0480.047NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 73.859NA73.87873.05872.303NA74.775.68777.302NA77.77478.63180.358NA87.8688.58991.18NA92.40291.91993.344NA98.79791.4141.371NA41.53641.65241.808NA41.88441.9542.068NA42.29842.34442.453NA42.30342.7243.342887NA43.17342.77842.481748
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 73.859NA73.49273.05872.303NA74.36775.68777.302NA77.77478.63180.358NA87.2188.58991.18NA91.76291.91993.344NA98.79791.4140.776NA41.20641.0641.081NA41.42541.39241.405NA41.70941.69541.742NA41.52342.25842.608457NA42.10541.92241.811888
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:RestrictedStockUnitsRSU1.353NA3.1690.5361.152NA2.9970.6241.184NA0.4350.7311.065NA1.8730.9361.029NA1.2070.7092.282NA0.3580.5570.019NA0.0190.00.0NA0.00.1230.56NA0.0430.2470.071NA9.6e-050.0001750.079892NA0.03.8e-050.02859
us-gaap:EarningsPerShareBasic ▃▅▆▄▃▄▆▃▃▅▄▃▁▅█▄▃▅▅▄▄▄▃▄▅▆▆▅▅▆▆▅▅▅▅▅▄▅▅▅▄▅▅▅▅-0.150.150000000000000020.39-0.05-0.240.090.49-0.23-0.380.23999999999999988-0.05-0.34-0.780.200000000000000071.03-0.03-0.270.240.23-0.01-0.1-0.02999999999999997-0.25-0.090.190.510.430.270.280.40999999999999990.420.240.130.350.270.240.120.310.240.170.060.260.260.20.17
us-gaap:EarningsPerShareDiluted ▃▅▆▄▃▄▆▃▃▅▄▃▁▅█▄▃▅▅▄▄▄▃▄▅▆▆▅▅▆▆▅▄▅▅▅▄▅▅▅▄▅▅▅▅-0.150.150000000000000020.39-0.05-0.240.10.49-0.23-0.380.24-0.05-0.34-0.780.21.02-0.03-0.270.240.23-0.01-0.1-0.04-0.25-0.090.190.50.420.270.270.40.410.240.120.340.260.230.120.30.240.170.060.250.260.190.17
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 Cost Ratio us-gaap:ProductOrService us-gaap:Product▂▄▅▃▁▅█▄▁▆▇▅▃▆██▄81.9599.084114.96591.97971.693116.538143.309102.77575.719125.474134.135110.75396.927122.217146.569142.973108.659NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio us-gaap:ProductOrService us-gaap:Service▁▄▄▄▃▃▅▄▂▂▃▃▁▃█▄▅108.322114.305113.774113.36112.122112.813116.715113.646110.305109.528111.873113.044108.184113.007122.375113.89117.097NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AllocatedShareBasedCompensationExpense ▇▅▆▇▆▅▅▇▆▆▆█▆▆▆▆▅▄▅▆▄▄▄▄▂▂▂▂▂▂▂▂▂▁▂▂▁▂▁▁▁▁▁▁▁13.96511.54312.51715.73612.09610.911.36115.85712.74312.18613.75917.41812.96512.06312.42512.59810.2318.91810.46111.6788.1327.9678.2867.5034.5954.6334.154.4953.3022.9713.2173.932.8122.3372.4642.5322.2472.5852.171.7882.1592.31.461.5011.178
us-gaap:ComprehensiveIncomeNetOfTax ▃▄▅▄▃▄▆▃▃▅▄▃▁▅█▄▃▅▅▄▄▄▃▄▄▅▅▄▄▅▅▄▄▅▄▄▄▅▄▄▄▄▄▄▄-11.2789.23530.541-2.703-16.5017.52137.079-17.987-29.88817.18-4.766-25.766-65.50619.66689.2260.066-22.77922.79318.995-1.236-9.232-1.429-25.281-7.9719.45617.76115.8819.01311.1216.92717.73311.0875.4613.77411.79511.6393.8615.019.0446.7692.49311.20710.8488.9217.43
us-gaap:CostOfRevenue ▄▄▄▄▄▅▅▄▄▄▅▅▅▅▅▆▅▇▆▆▇███▂▂▂▂▂▂▂▁▁▂▁▁▁▁▁▁▁▁▁▁▁54.4154.94255.27558.952.9862.73265.58559.13254.74358.53669.58463.9862.02766.59164.50974.24366.56292.91781.67884.5187.034100.851106.115100.18721.29623.38826.98221.59522.59624.28523.60219.70416.92221.0419.16416.94116.86318.9617.23915.57713.89616.38716.09214.30714.575
us-gaap:GeneralAndAdministrativeExpense ▄▄▄▄▅▅▅▅▄▄▄▅▅▅▄▆▆▅▆▆▆▇▆█▂▃▃▂▂▂▂▁▁▁▂▁▁▁▁▁▁▁▁▁▁22.74521.52521.71820.57325.15327.55825.04825.17722.21119.43122.78825.29426.05927.07923.03329.49529.87227.44428.5431.52730.92735.23730.97341.30110.09914.08513.39111.0678.7538.2567.9297.4576.9817.6478.5396.9756.5577.3536.5647.0376.5345.836.3565.8255.297
us-gaap:GrossProfit ▄▅▆▅▄▆▇▅▄▆▆▅▅▆▇▆▅██▆▆▆▇▅▂▃▃▂▂▃▂▂▂▂▂▂▁▂▂▁▁▁▁▁▁135.862158.447173.464146.439130.835166.619194.439157.289131.281176.466176.424159.817143.084168.633204.435182.62159.194226.003220.514187.538181.918185.036201.564160.92379.44795.99795.85182.00485.25688.03286.82672.39364.88377.03772.40367.60459.49870.50266.05857.04749.461.59360.24455.10652.236
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▅▇▇▆▅▆█▅▄▇▆▄▁▅█▆▄██▆▅▅▆▄▇█▇▇▇▇▇▇▆▇▇▇▆▇▇▆▆▇▇▇▆-13.08712.99928.1870.385-19.2678.77832.904-10.911-28.84723.102-5.205-29.063-81.746-12.56135.154-4.562-36.6936.85430.614-1.625-13.658-7.934-0.65-36.09812.24329.96627.42718.10119.47125.91527.30815.8238.8121.64717.45816.7717.8620.1216.23810.6673.89316.47515.85312.8411.125
us-gaap:IncomeTaxExpenseBenefit ▆▆▆▆▆▆▆▆▆▆▆▆▄▃▁▆▅▇▇▆▅▅█▃▆▇▇▆▇▇▇▆▆▇▆▆▆▇▆▆▆▆▆▆▆-1.7461.562-0.8344.071-1.8471.442-3.8216.5610.4963.891-1.602-2.635-19.242-29.378-54.531-2.094-12.46814.5449.369-0.359-4.66-4.31823.857-28.1834.5749.1129.7986.8687.9959.23910.0145.943.5577.0946.326.8612.8527.1736.2073.6161.4945.7044.7524.5923.98
us-gaap:IncomeTaxesPaid █▂▂▃▁▂▂▃▂▃▂▂▂12.732.943.1553.9031.4742.5673.2624.0213.2114.2312.7162.5523.882NANANANANANANANANANANA2.9678.4035.2439.4456.1428.8284.7064.1273.7950.8664.2867.2010.973NA5.714NA3.197NANANANA
us-gaap:InterestExpense ▃▃▄▄▄▅▆▆▇██▇▇▆▄▃▃▃▃▃▃▃▃▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁2.1542.3822.7082.7153.0744.434.6295.1736.3656.8237.0056.4275.8884.7192.7982.5652.552.4012.262.1932.3312.2822.071.7860.1920.1930.1910.1960.1940.1930.1980.1870.190.2060.2930.4010.2960.3170.4720.4770.50.5730.5990.6580.622
us-gaap:InterestPaidNet ▁▁▂▂▂▄▄▅▇▇█▇▇1.3931.5821.9261.8792.2983.6253.8524.5285.6395.8716.3455.6535.412NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▃▄▅▄▃▄▆▃▃▅▄▃▁▅█▄▃▅▅▄▃▄▃▄▄▅▅▄▄▅▅▄▄▅▄▄▄▄▄▄▄▄▄▄▄-11.34111.43729.021-3.686-17.427.33636.725-17.472-29.34319.211-3.603-26.428-62.50416.81789.685-2.468-24.22222.3121.245-1.266-8.998-3.616-24.507-7.9157.66920.85417.62911.23311.47616.67617.2949.8835.25314.55311.1389.915.00812.94710.0317.0512.39910.77111.1018.2487.145
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▅▆▇▅▄▆█▄▃▇▅▄▁-11.34111.43729.021-3.686-17.427.33636.725-17.472-29.34319.211-3.603-26.428-62.504NANANANANANANANA-3.616-24.507NANA20.85417.629NANANANANANANANANANANANANANANANANANA
us-gaap:NonoperatingIncomeExpense ▅▄▄▄▃▄▄▄▃▁▃▁▃▂▄▄▄▆▅▅▅▅▅▇█▇▇▇██████████▇▇▇▇█▇▇-2.42-3.069-3.583-3.394-4.78-3.784-3.915-3.616-4.399-6.129-4.564-5.946-4.693-5.036-3.107-3.323-3.135-1.797-2.748-2.43-2.904-3.012-2.903-0.828-0.146-0.622-0.512-0.543-0.131-0.070.044-0.059-0.073-0.217-0.104-0.116-0.356-0.323-1.208-0.835-0.399-0.478-0.392-0.462-0.44
us-gaap:OperatingExpenses ▅▅▅▅▅▅▆▆▅▅▆▇█▆▆▇▇▇▇▇▇▇▇▇▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁146.529142.379141.694142.66145.322154.057157.62164.584155.729147.235177.065182.934220.137176.158166.174183.859192.749187.352187.152186.733192.672189.958199.311196.19367.05865.40967.91263.3665.65462.04759.56256.51156.055.17354.84150.71751.28250.05948.61245.54545.10844.6443.99941.80440.671
us-gaap:OperatingIncomeLoss ▅▇█▆▅▆█▅▄▇▆▄▁▅█▆▄██▆▅▅▆▄▆█▇▇▇▇▇▇▆▇▇▇▆▇▇▆▆▇▇▆▆-10.66716.06831.773.779-14.48712.56236.819-7.295-24.44829.231-0.641-23.117-77.053-7.52538.261-1.239-33.55538.65133.3620.805-10.754-4.9222.253-35.2712.38930.58827.93918.64419.60225.98527.26415.8828.88321.86417.56216.8878.21620.44317.44611.5024.29216.95316.24513.30211.565
us-gaap:OtherNonoperatingIncomeExpense ▅▄▃▄▁▅▅▆▆▄█▄▆▃▄▃▃▆▄▅▄▄▃█▅▄▅▅▆▆▆▆▆▅▆▆▅▅▅▅▆▆▆▆▆-0.329-0.823-0.948-0.85-1.971-0.183-0.1120.3430.308-0.8630.986-0.8120.254-0.929-0.616-1.168-1.0650.21-0.695-0.466-0.764-0.902-1.0220.786-0.112-0.576-0.416-0.445-0.0410.0240.1760.0710.03-0.0960.0740.093-0.176-0.121-0.15-0.4590.0020.01-0.003-0.0030.004
us-gaap:ResearchAndDevelopmentExpense ▅▅▅▆▅▆▆▆▅▅▆▇▇▆▅▇▇▆▇▇▇▇██▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁42.8243.55843.76946.45545.38145.90348.60650.05843.72742.24149.92555.95955.46353.31444.28758.50958.96653.0258.08461.04660.55159.54565.13165.89618.05818.3718.86419.24118.76719.50318.34816.63815.96516.91615.35215.20114.07713.40513.59311.1611.3210.89410.1459.8119.778
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▄▅▆▅▄▆▆▅▄▆▆▅▅▆▇▆▅██▇▇▇█▆▂▃▃▂▂▂▂▂▂▂▂▂▁▂▂▁▁▁▁▁▁190.272213.389228.739205.339183.815229.351260.024216.421186.024235.002246.008223.797205.111235.224268.944256.863225.756318.92302.192272.048268.952285.887307.679261.11100.743119.385122.833103.599107.852112.317110.42892.09781.80598.07791.56784.54576.36189.46283.29772.62463.29677.9876.33669.41366.811
us-gaap:Revenues ▄▅▆▅▄▆▆▅▄▆▆▅▅▆▇▆▅██▇▇▇█▆▂▃▃▂▂▂▂▂▂▂▂▂▁▂▂▁▁▁▁▁▁190.272213.389228.739205.339183.815229.351260.024216.421186.024235.002246.008223.797205.111235.224268.944256.863225.756318.92302.192272.048268.952285.887307.679261.11100.743119.385122.833103.599107.852112.317110.42892.09781.80598.07791.56784.54576.36189.46283.29772.62463.29677.9876.33669.41366.811
us-gaap:SellingAndMarketingExpense ▅▅▅▅▅▅▅▆▆▅▆▆▇▆▇▇▇█▇▆▇▇█▇▂▂▂▂▂▂▂▂▂▁▂▁▂▁▁▁▁▁▁▁▁65.95862.06260.93460.359.43462.27867.65373.06773.52567.66374.02472.05178.13272.63977.2777.26685.36187.12283.21276.70681.58884.70491.38679.15338.09232.14234.83632.19637.27233.42732.42531.55932.229.8130.10526.74330.14928.4827.51826.85426.77227.43927.02225.69125.119
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:Assets ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇███████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁3033.0543085.0383146.3233077.5513067.5273120.5033127.3393069.3743194.0013269.9943297.3843243.0053277.6083368.6083359.0193317.9253409.833601.5133512.8973459.7853494.4583592.8433635.1143604.071641.752669.049638.928591.541588.137607.763577.877541.401539.657552.176532.12561.771556.626567.757530.892500.151506.47527.57NANANA
us-gaap:Liabilities ▆▇▇▇▇▇▇▇▇▇█▇██▆▇▇▇▇▇▇▇▇▆▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1030.0991079.2591168.0881138.2311137.711182.5841164.5321129.111182.5661204.5611253.9071206.4071232.4071299.8261027.6711085.5681092.3111165.2631115.0121085.8331102.8061149.4611105.8171030.451195.358233.299206.81178.919175.511198.602182.279158.614166.204180.273171.778209.45214.644225.388205.197184.842183.529208.011NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇███████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁3033.0543085.0383146.3233077.5513067.5273120.5033127.3393069.3743194.0013269.9943297.3843243.0053277.6083368.6083359.0193317.9253409.833601.5133512.8973459.7853494.4583592.8433635.1143604.071641.752669.049638.928591.541588.137607.763577.877541.401539.657552.176532.12561.771556.626567.757530.892500.151506.47527.57NANANA
us-gaap:StockholdersEquity ▆▆▆▆▆▆▆▆▆▆▆▆▆▆▇▇▇█▇▇▇███▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁2002.9552005.7791978.2351939.321929.8171937.9191962.8071940.2642011.4352065.4332043.4772036.5982045.2012068.7822331.3482232.3572317.5192436.252397.8852373.9522391.6522443.3822529.2972573.62446.394435.75432.118412.622412.626409.161395.598382.787373.453371.903360.342352.321341.982342.369325.695315.309322.941319.559NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AssetsCurrent ▆▇▇▆▆▆▆▅▆▇▇▇▆▇▆▆▆█▇▆▆▇▇▆▂▂▂▁▁▂▁▁▁▁▁▂▂▂▁▁▁▂696.256722.472762.614669.408630.775659.743654.049572.994675.85801.222802.233719.831718.074752.408713.507636.876704.898854.466745.63665.058668.939740.478753.872697.543307.893337.284315.244264.226246.794278.762248.601223.057229.241237.312219.541286.283270.708289.687236.665242.709246.264283.726NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ███▇▇▆▅▄▆▇▆▆▆▆▆▄▄▅▄▃▄▄▄▄▂▂▂▂▂▂▂▂▂▂▂▃▂▂▂▂▁▁▂▂▂487.168467.176477.755415.719403.306338.489287.66245.064353.721409.632369.054332.183353.416369.821331.912251.505261.736304.88244.833195.423210.87210.711230.521215.53994.352104.893106.70478.98688.974102.07688.64894.917102.72799.9390.836160.386135.025117.255102.762103.85939.47367.168121.482114.04398.063
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ███▆▆▄▃▂▅▆▅▄▅▅▄▂▃▄▂▁▁▁487.168467.176478.503416.467404.054340.237288.66246.064354.91409.82369.241332.37354.326370.731332.822252.414262.582305.726245.679196.269211.056210.897NANANA105.079NANANANANANANANANANANANANANANANANANANA
us-gaap:MarketableSecuritiesCurrent ▁▁▁▁▂▃▄▃▅▅▆▇▆▅▃▄██▇▆▆▇▇▆▆▆▅▅▅▅▄▃▃▃▂▄▄▅▄▄██6.7379.27712.68912.12723.20247.96956.27455.12984.35476.344105.753119.935105.63777.94147.89555.582138.719137.892114.8799.297108.743128.003127.751103.138112.857101.39287.96790.78388.8975.23456.34342.09446.33337.33835.32469.60474.51779.61761.16768.52142.319133.43NANANA
us-gaap:AccountsReceivableNetCurrent ▄▅▆▅▄▆▇▆▄▆▇▅▅▆▇▆▅██▇▅▇▇▅▂▂▂▂▁▂▂▂▂▂▂▁▁▂▂▂▁▂146.199197.717208.016169.687138.793213.514244.877202.288160.039235.318247.69184.156165.331213.438249.939215.227185.881294.374284.055240.599196.227247.199244.957165.09258.49682.22683.41549.78632.95560.51874.26355.67250.92273.961.90828.89538.80969.79549.59349.67741.36162.801NANANA
us-gaap:InventoryNet ▂▃▃▃▃▃▃▃▃▃▃▄▄▄▄▄▅▅▆▆▇▇▇█▂▂▁▂▁▂▁▁▁▁▁▁▁▁▁▁▁▁20.84122.81326.0426.22327.322.22724.97726.19526.47926.2728.90930.98532.73934.77436.59236.95641.01340.00254.15152.8658.84258.02963.42771.06612.7112.1310.27414.50511.02612.5811.12810.72810.947.5637.4278.3437.4948.0219.4148.9639.5918.925NANANA
us-gaap:InventoryFinishedGoods ▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▃▃▃▅▅▆▆▇█▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁4.0196.1685.66.0576.6175.3764.4734.956.2287.7386.7547.4278.0278.513.06916.40518.77216.69927.89431.90337.0338.76146.1350.6475.2035.9796.896.0684.3136.3943.9233.8124.6843.3053.9584.3243.9653.5753.9773.4884.4234.35NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▃▃▃▄▃▃▃▄▄▄▃▃▄▄▃▃▃▄▃▅▇█▅▇▁▂▂▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁23.77723.58328.54836.65425.78224.03925.80731.20931.64335.65827.00127.42932.40733.50223.68629.04329.02636.97228.80842.44465.85578.39949.42172.2188.42513.4959.8469.0529.32811.4968.88.2927.2159.0439.4656.6455.5886.1625.6924.5424.7654.814NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:PropertyPlantAndEquipmentGross NA258.788NANANA251.615NANANA232.76NANANA204.511NANANA186.195NANANA154.167NANANA99.799NANANA89.634NANANA75.468NANANA63.648NANANA50.891NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType ntct:ComputerEquipmentAndInternalUseSoftwareNA177.098NANANA170.518NANANA158.797NANANA147.237NANANA135.1NANANA118.974NANANA69.259NANANA62.045NANANA52.17NANANA45.44NANANA38.69NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType ntct:DemonstrationAndSparePartUnitsNA17.968NANANA51.91NANANA17.928NANANA31.338NANANA28.036NANANA6.86NANANA12.092NANANA10.755NANANA8.041NANANA6.764NANANA3.517NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:FurnitureAndFixturesNA9.742NANANA9.561NANANA9.373NANANA6.596NANANA6.436NANANA5.843NANANA3.739NANANA3.693NANANA3.337NANANA2.866NANANA2.442NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNA53.98NANANA19.626NANANA46.662NANANA19.34NANANA16.623NANANA22.49NANANA14.709NANANA13.141NANANA11.92NANANA8.578NANANA6.242NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NA210.314NANANA193.9NANANA173.809NANANA152.0NANANA124.802NANANA92.134NANANA75.935NANANA66.536NANANA55.79NANANA47.191NANANA37.424NANANA
us-gaap:AmortizationOfIntangibleAssets ▅▅▅▅▅▆▆▆▆▆▆▇██▇▇▇███▅▃▃▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁18.67320.18620.45520.68820.27922.73622.68922.81422.9524.61224.61426.47732.66131.99828.31828.43428.20531.4832.17131.26217.57210.47211.2499.8430.8090.8120.8210.8560.8620.8610.860.8570.8540.80.8460.6450.5860.590.5650.4940.4820.4770.4760.4770.477
us-gaap:PropertyPlantAndEquipmentNet ▆▆▆▆▇▇▇▇▇▇██▇▆▇▇▇█████▇▇▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁46.97348.47451.26553.16855.22857.71558.758.50556.39358.95160.78963.61760.00652.51153.64657.41360.26961.39361.964.00364.05862.03358.66360.39824.90223.86423.01621.72122.74223.09821.3521.79720.56519.67818.07716.50517.02916.45715.21315.43114.62913.467NANANA
us-gaap:Goodwill ████████████████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1716.0921717.5541714.1091718.5951721.6491725.681718.4961719.3621717.9451715.4851715.5231712.9621718.4991712.7641716.3711715.8611715.5121718.1621720.9111714.5391710.2861709.3691693.8761702.705198.222197.445200.271201.457203.034203.446203.201202.863202.582202.453203.251181.299169.522170.384169.952141.356141.356128.177NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▄▄▄▄▄▅▅▅▅▅▅▅▆▆▆▇▇▇▇▇▇███▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁494.412511.866535.095551.783569.477582.179602.856624.799648.997669.118693.763720.9756.4831.374859.16888.0906.345931.3959.042998.1691023.9681054.041075.5321102.71748.81550.1852.46954.46556.64358.51359.82760.89662.31763.82765.43356.06652.45254.68556.3948.93950.547.686NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▄▄▄▄▄▅▅▅▅▅▅▅▆▆▆▇▇▇▇▇▇███▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁494.412493.266516.495533.183550.877563.579584.256606.199630.397650.518675.163702.349737.818812.774840.56869.374887.745912.669940.442979.5691005.3681035.441056.9321084.11730.21531.5833.86935.86538.04339.91341.22742.29643.71745.22765.43356.06652.45254.68556.3948.93950.547.686NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▁▃▄▆██▆▅▇58.89961.51263.25765.56268.02568.58365.73865.11867.536NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▅▆▅▅▆▇▇▆▆▇███▅▃▃▄▃▃▃▃▃▃▃▁▁▁▁▁▁▁▁▁▂▂▁▁▁▁▁▁▁12.22115.06413.00112.34515.88217.7717.90513.9615.08316.98819.29820.00619.03612.8667.4237.9198.1347.715.7236.0786.8587.3567.7757.5881.6171.7041.8732.132.3442.462.0472.2852.4392.8723.5232.0951.842.0082.4631.2441.3591.467NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AccountsPayableCurrent ▃▃▃▃▃▃▃▅▄▄▄▃▄▅▅▅▅▆▆▇▇▇█▆▂▂▂▂▂▂▁▁▂▂▁▁▁▁▁▁▁▁16.96117.96419.21918.08317.28820.00419.75634.85525.57824.58229.43222.10225.12230.13332.46930.12830.55137.40741.6645.85345.60743.96952.6637.42511.20313.07710.92710.1939.88811.5418.6798.71912.1310.1619.1518.3448.1067.5396.5857.8456.5799.709NANANA
us-gaap:AccruedIncomeTaxesCurrent ▆█▁▁▁▂▃▃▃▂▁▁▁▃▄▇▆▆▁▁▃▃▁▁▁▁▁▁▁▂▂▁▁▁5.4927.0250.2330.2330.2330.9031.5171.5171.5171.3180.210.210.211.5263.246.2635.0575.0570.00.02.0912.0910.00.00.1470.1070.00.00.00.7910.7050.00.00.114NANANA0.0NANANANANANANA
us-gaap:ContractWithCustomerLiabilityCurrent ▄▅▃▂▃▅▄▁▃▅▄▁▃█257.969269.748251.313236.24249.382270.281261.151234.229246.498272.508260.926230.098248.165301.925NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ▆▇▇▆▆▇▆▆▆▆▆▆▆▇▇▇▇██▇▇█▇▆▂▂▂▂▁▂▂▁▁▂▁▁▁▁▁▁▁▁367.565411.275396.219362.207357.492398.997384.104350.559349.583379.936386.365339.032359.825413.3419.325397.692402.247460.187453.021422.578424.58457.056433.127374.224148.818187.633168.917145.455141.69162.964150.791128.096132.682145.171140.362120.011125.558134.091120.096122.406118.175136.59NANANA
us-gaap:OperatingLeaseLiabilityCurrent ▇█▆▄▃▁12.12512.35411.75311.32511.02610.337NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▅▅██▆▅▄▄▅▅▅▇▇▇▇▆▆▆▆▆▆▇▅▆▂▃▃▂▂▂▂▂▂▂▂▁▁▂▂▁▁▁21.72621.12736.80134.48425.87521.8420.15919.22323.54523.02724.18532.36430.99733.16430.33528.88125.90829.52228.68429.45428.1632.04523.82827.667.50914.47411.0269.3496.1826.437.077.2926.6717.0277.4045.9145.7996.2356.9324.8623.8264.786NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:LongTermDebtNoncurrent ▃▃▅▅▅▅▅▅▆▇████▂▂▂▂▂▂▂▂▁▁350.0350.0450.0450.0450.0450.0450.0450.0500.0550.0600.0600.0600.0600.0300.0300.0300.0300.0300.0300.0300.0300.0250.0250.0NA0.0NANANANANANANA0.00.062.062.062.062.045.60649.35653.106NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▁▂▅▅▆▇▇█89.59192.287105.51108.716111.194114.394115.47120.895NA124.229NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ██▄▅▅▄▃▃▃▇▇▇▆▃▃▂▂▂▁▂▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁22.1821.64111.56814.64614.44910.0396.9977.1996.19119.49320.05720.44915.0928.3087.4125.4324.343.9763.0983.2242.6062.9032.2915.4451.8581.9952.1472.2252.2752.372.4152.5312.672.2492.0442.112.1612.3472.172.0281.8871.721NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▁▃▄▆▇█58.57961.26763.81466.67369.35570.658NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo ▁█▇▇10.30912.8912.47712.339NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▁█▆▅10.10610.29910.24810.216NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ▁███9.09310.09810.08110.057NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NA9.087NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NA29.286NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:StockholdersEquity ▆▆▆▆▆▆▆▆▆▆▆▆▆▆▇▇▇█▇▇▇███▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁2002.9552005.7791978.2351939.321929.8171937.9191962.8071940.2642011.4352065.4332043.4772036.5982045.2012068.7822331.3482232.3572317.5192436.252397.8852373.9522391.6522443.3822529.2972573.62446.394435.75432.118412.622412.626409.161395.598382.787373.453371.903360.342352.321341.982342.369325.695315.309322.941319.559NANANA
us-gaap:CommonStockValue ████████████▇▇▇▇▇▇▇▇▇▇▇▇▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁0.1240.1240.1240.1230.1220.1220.1220.1220.120.120.1190.1190.1170.1170.1170.1160.1160.1160.1160.1150.1140.1140.1140.1140.0510.0510.0510.0510.050.050.050.050.0490.0490.0490.0490.0480.0480.0480.0480.0480.047NANANA
us-gaap:AdditionalPaidInCapital ████████████▇▇▇▇▇▇▇▇▇▇▇▇▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁2968.6312955.42936.5732924.7572903.0552891.5532873.7022863.0032841.0012828.9222809.9012796.6952676.3822665.122735.3872723.6932703.2752693.8462676.8522666.9972650.3152642.7452627.8072619.418302.456298.101292.059287.795278.106273.574267.649263.887256.762253.202248.694245.882239.455237.289232.969231.485229.515227.201NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▇▇▇▆▆▇▇▆▆▇▆▇▇██▅▅▆▅▅▅▅▅▆▆▆▅▅▄▄▄▃▃▃▃▂▂▂▂▁▁▁363.35374.691363.254334.233337.919355.339348.003311.278328.75358.093338.107341.71368.138396.493379.676289.991292.459316.681294.371273.126274.392283.39287.006311.513319.428311.759290.905273.276262.043250.567233.891216.597206.714201.461186.908175.77165.86160.852147.905137.874130.823128.424NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▄▄▆▄▃▂▂▂▂▃▅▆▅█▅▆▃▂▂▄▄▄▂▃▃▁▄▅███▇▆▆▇▆▄▆▄▅▅▅-1.877-1.940.262-1.258-2.241-3.16-3.345-3.699-3.184-2.639-0.6080.555-0.1072.8950.0460.505-2.029-3.472-3.955-1.705-1.735-1.501-3.688-2.914-2.858-4.645-1.5520.1962.4162.7722.5212.0820.8780.6711.450.793-0.9360.212-1.851-0.864-0.582-0.676NANANA
us-gaap:TreasuryStockValue ███████▇▇▇▇▇▆▆▅▅▄▄▄▄▄▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁1327.2731322.4961321.9781318.5351309.0381305.9351255.6751230.441155.2521119.0631104.0421102.481999.329995.843783.878781.948676.302570.921569.499564.581531.434481.366381.942354.511172.683169.516149.345148.696129.989117.802108.51399.82990.9583.4876.75970.17362.44556.03253.37653.23436.86335.437NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▇▅▂▄█▆▁▄▆▃▂▃▆▆▂▄24.05692.01865.25711.71544.931107.23369.334-1.00249.45880.32436.8087.18625.5273.53676.85719.42652.635NANANANANANANANANANANANANANANANANANA20.36636.12424.42425.95511.6096.31922.48114.1246.7323.854
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▃▃▄▅▃▃▅▂▅▄▂▁▁▄█▄-0.0320.508-3.9247.57120.543-3.492-2.24820.916-19.48525.1085.817-23.075-34.102-30.7375.8573.4618.554NANANANANANANANANANANANANANANANANANA11.728-10.51-8.215-26.29972.716-28.994-75.35-8.51810.85813.046
us-gaap:NetCashProvidedByUsedInFinancingActivities █▂███▅▇▁▃▄█████▂▂-4.777-101.266-3.442-9.496-4.103-50.26-25.235-127.655-83.72-65.021-3.889-6.889-3.486-7.346-1.929-106.306-105.381NANANANANANANANANANANANANANANANANANA-6.702-7.861-1.716-0.743-19.939-5.02-1.4451.833-1.608-2.159
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▆▅▇▅▇▇▇▁▃▇▆▄▄▆█▅▃▇19.992-11.32762.03612.41363.81751.57742.596-108.846-54.9140.57936.871-21.956-16.40537.90980.408-10.168-43.14460.047NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:DeferredIncomeTaxExpenseBenefit ▆▅▆▆▆▆▆▆▆▆▆▆▅▄▁▆▆█▅▅▆▃▆▇▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆-2.896-13.366-3.814-2.902-3.722-1.341-5.535-3.7750.83-5.775-5.378-7.983-14.306-27.742-82.707-8.771-8.56427.249-12.929-14.0-11.328-49.1022.8153.9270.2390.5850.3910.3511.4090.9552.4361.2050.618-2.3282.3271.4762.4342.1942.0950.9330.233.532-2.4111.1641.174
us-gaap:DepreciationDepletionAndAmortization ▄▅▅▅▅▅▅▅▅▆▆▆▇▇▇▆▇▇▇▇▇▇██▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁24.23726.1926.48627.14326.00928.70728.73129.33129.33531.36931.95134.21140.34740.64437.6537.49637.71339.97440.30840.40740.17442.40345.87146.8114.9865.264.6964.8774.8764.4864.2624.6534.8593.6384.7574.6944.3754.4514.2144.1963.7813.5083.4943.4033.472
us-gaap:IncreaseDecreaseInAccountsPayable ▄▄▄▄▄▄▁▆▄▃▆▃▃▃▅▄▃▄▄▄▅▂█▃▄▅▄▄▄▅▄▃▅▄▃▄▄▄▄▄▃▅▄▄▄-1.084-1.1450.751.084-2.4230.359-14.74610.733-0.634-4.45810.1-4.312-5.206-3.5512.714-0.966-7.126-2.04-1.969-0.4444.858-11.33618.682-3.383-1.6292.0550.5260.332-1.5582.7530.256-3.4811.970.792-4.4360.3850.9140.557-1.4231.818-3.1474.369-0.894-2.1061.214
us-gaap:IncreaseDecreaseInAccountsReceivable ▃▅▆▆▂▄▇▇▂▅▇▆▃▄▆▆▁▅▇▇▃▅█▄▄▅▆▆▄▅▆▅▄▆▆▅▄▆▅▅▄▅▆▅▄-51.773-10.15637.91830.512-75.152-31.02642.49142.155-75.092-11.74863.25318.614-47.939-37.51334.84127.292-109.5729.47845.23844.121-50.757-3.27579.229-28.966-23.729-1.17233.65716.867-27.551-13.75318.5734.717-22.98812.04828.722-9.941-30.91120.186-2.6068.316-21.8996.00915.3441.13-25.238
us-gaap:IncreaseDecreaseInInventories ▆▅▆▆█▅▆▇▇▅▆▆▆▅▆▅█▁▇▅▇▆▇▃▇▇▅▇▆▇▆▆█▆▅▆▆▆▆▇▆▆▅▇▆-1.132-3.04-0.389-0.0725.544-2.734-1.2511.2761.208-2.638-1.791-1.030.138-2.2280.174-3.6894.737-14.9992.782-3.9533.714-0.3562.001-8.9741.8061.858-4.233.483-0.6121.4520.4-0.2125.1580.135-2.4730.8490.056-1.3930.3371.2820.666-0.023-2.4642.7960.783
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▇▅▂▄█▆▁▄▆▃▂▃▆▆▂▄24.05692.01865.25711.71544.931107.23369.334-1.00249.45880.32436.8087.18625.5273.53676.85719.42652.635NANANANANANANANANANANANANANANANANANA20.36636.12424.42425.95511.6096.31922.48114.1246.7323.854
us-gaap:NetIncomeLoss ▃▄▅▄▃▄▆▃▃▅▄▃▁▅█▄▃▅▅▄▃▄▃▄▄▅▅▄▄▅▅▄▄▅▄▄▄▄▄▄▄▄▄▄▄-11.34111.43729.021-3.686-17.427.33636.725-17.472-29.34319.211-3.603-26.428-62.50416.81789.685-2.468-24.22222.3121.245-1.266-8.998-3.616-24.507-7.9157.66920.85417.62911.23311.47616.67617.2949.8835.25314.55311.1389.915.00812.94710.0317.0512.39910.77111.1018.2487.145
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▅▆▇▅▄▆█▄▃▇▅▄▁-11.34111.43729.021-3.686-17.427.33636.725-17.472-29.34319.211-3.603-26.428-62.504NANANANANANANANA-3.616-24.507NANA20.85417.629NANANANANANANANANANANANANANANANANANA
us-gaap:ShareBasedCompensation ▇▅▆▇▆▅▅▇▆▆▆█▆▆▆▆▅▄▅▆▄▄▄▄▂▂▂▂▂▂▂▂▂▁▂▂▁▂▁▁▁▁▁▁▁13.96511.54312.51715.73612.09610.911.36115.85712.74312.18613.75917.41812.96512.06312.42512.59810.2318.91810.46911.678.1327.9518.3027.5034.5954.6334.154.4953.3022.9713.2173.932.8122.3372.4642.5432.2472.5342.171.7882.1592.31.461.5011.178
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▃▃▄▅▃▃▅▂▅▄▂▁▁▄█▄-0.0320.508-3.9247.57120.543-3.492-2.24820.916-19.48525.1085.817-23.075-34.102-30.7375.8573.4618.554NANANANANANANANANANANANANANANANANANA11.728-10.51-8.215-26.29972.716-28.994-75.35-8.51810.85813.046
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▃▃▃▂▄▅▅▃▃▆▅▅▃▄▄▃▆▅▅▇█▄▅▃▃▄▂▂▄▂▃▂▃▃▂▃▃▂▂▃▃▂▁▂2.5782.8763.3413.1642.6054.7156.1515.7693.2873.937.2555.7396.4683.5614.7984.2573.2977.9975.9516.539.21810.7764.8945.6983.4154.1784.6142.1511.8654.3572.2014.1282.383.6363.641.9512.7213.4362.062.0853.7073.3091.5720.5172.093
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities █▂███▅▇▁▃▄█████▂▂-4.777-101.266-3.442-9.496-4.103-50.26-25.235-127.655-83.72-65.021-3.889-6.889-3.486-7.346-1.929-106.306-105.381NANANANANANANANANANANANANANANANANANA-6.702-7.861-1.716-0.743-19.939-5.02-1.4451.833-1.608-2.159
us-gaap:PaymentsForRepurchaseOfCommonStock NA0.0NANA0.050.025.069.29230.70814.4680.00.00.0301.3240.0100.0100.01.4224.91833.14750.06899.42427.431181.8283.16720.1710.64918.70712.1879.2898.6848.8797.476.7216.5867.7286.4132.6560.14216.3711.4260.00.00.00.0
 us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:ShareRepurchaseProgram ntct:ShareRepurchaseProgramOctober2017NA0.03.20.0NA50.025.066.833.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value124000.0124000.0124000.0123000.0122000.0122000.0122000.0122000.0120000.0120000.0119000.0119000.0117000.0117000.0117000.0116000.0116000.0116000.0116000.0115000.0114000.0114000.0114000.0114000.051000.051000.051000.051000.050000.050000.050000.050000.049000.049000.049000.049000.048000.048000.048000.048000.048000.047000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value73737372747577777880878891929193989141414141414142424242424243434242
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value73737372747577777880878891919193989140414141414141414141414242424141
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:RestrictedStockUnitsRSU


Antidilutive
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value1353000.03169000.0536000.01152000.02997000.0624000.01184000.0435000.0731000.01065000.01873000.0936000.01029000.01207000.0709000.02282000.0358000.0557000.019000.019000.0000123000.0560000.043000.0247000.071000.096.0175.079892.0038.028590.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-0.150.150.39-0.05-0.240.090.49-0.23-0.380.24-0.05-0.34-0.780.21.03-0.03-0.270.240.23-0.01-0.1-0.03-0.25-0.090.190.510.430.270.280.410.420.240.130.350.270.240.120.310.240.170.060.260.260.20.17
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-0.150.150.39-0.05-0.240.10.49-0.23-0.380.24-0.05-0.34-0.780.21.02-0.03-0.270.240.23-0.01-0.1-0.04-0.25-0.090.190.50.420.270.270.40.410.240.120.340.260.230.120.30.240.170.060.250.260.190.17
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value13111215121011151212131712121212108.91810118.1327.9678.2867.5034.5954.6334.154.4953.3022.9713.2173.932.8122.3372.4642.5322.2472.5852.171.7882.1592.31.461.5011.178
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.30.05.57.76.64.84.47.36.95.25.67.86.35.14.64.94.52.83.54.33.02.82.72.94.63.93.44.33.12.62.94.33.42.42.73.02.92.92.62.53.42.91.92.21.8

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

ntct:CostOfProductRevenue


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.2740.2010.2480.3440.2450.2260.2310.3450.2670.2750.3750.5440.2690.3520.3010.2930.2130.2180.2550.2660.1950.180.1960.1670.1020.10.0850.0930.060.0540.0620.0680.0440.0590.0610.0660.049
Percentage of AllocatedShareBasedCompensationExpense2.01.72.02.22.02.12.02.22.12.32.73.12.12.92.42.32.12.42.42.32.42.32.42.22.22.22.02.11.81.81.91.71.62.52.52.62.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.10.20.10.10.10.20.10.10.20.20.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.10.10.10.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ntct:CostOfProductRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ntct:CostOfServiceRevenue


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1.6131.2921.3711.811.351.191.2751.8421.4671.2651.5191.8451.331.2271.2871.2941.0160.8981.0151.2450.7980.7530.7210.7540.3730.3580.2940.3140.2280.1750.1940.2260.1460.0930.0960.0870.066
Percentage of AllocatedShareBasedCompensationExpense11.611.211.011.511.210.911.211.611.510.411.010.610.310.210.410.39.910.19.710.79.89.58.710.08.17.77.17.06.95.96.05.85.24.03.93.42.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.00.60.90.70.50.50.90.80.50.60.80.60.50.50.50.50.30.30.50.30.30.20.30.40.30.20.30.20.20.20.20.20.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ntct:CostOfServiceRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value3.1732.7642.7833.292.7282.2972.5083.5623.0552.9973.2373.5722.8562.9933.0852.9492.3832.2822.3682.5691.8952.1062.0721.771.2271.2191.0951.3631.0250.8580.861.210.8810.6710.7540.8290.77
Percentage of AllocatedShareBasedCompensationExpense22.723.922.220.922.621.122.122.524.024.623.520.522.024.824.823.423.325.622.622.023.326.425.023.626.726.326.430.331.028.926.730.831.328.730.632.734.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.70.01.21.61.51.01.01.61.61.31.31.61.41.31.11.11.10.70.80.90.70.70.70.71.21.00.91.31.00.80.81.31.10.70.81.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value4.0913.563.8624.9353.7813.4353.4374.823.8193.7773.9795.4144.1513.8913.733.9153.1752.4013.4563.8722.6332.5642.5792.5721.491.5341.4551.491.0261.0451.1571.2630.8960.780.7780.7420.644
Percentage of AllocatedShareBasedCompensationExpense29.330.830.931.431.331.530.330.430.031.028.931.132.032.330.031.131.026.933.033.232.432.231.134.332.433.135.133.131.135.236.032.131.933.431.629.328.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.20.01.72.42.11.51.32.22.11.61.62.42.01.71.41.51.40.81.11.41.00.90.81.01.51.31.21.41.00.91.01.41.10.80.80.90.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ResearchAndDevelopmentExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingAndMarketingExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value4.8143.7264.2535.3573.9923.7523.915.2884.1353.8724.6496.0434.3593.64.0224.1473.4443.1193.3673.7262.6112.3642.7182.241.4031.4221.2211.2350.9630.8390.9441.1630.8450.7340.7750.8080.718
Percentage of AllocatedShareBasedCompensationExpense34.532.334.034.033.034.434.433.332.431.833.834.733.629.832.432.933.735.032.231.932.129.732.829.930.530.729.427.529.228.229.329.630.031.431.531.932.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.50.01.92.62.21.61.52.42.21.61.92.72.11.51.51.61.51.01.11.41.00.80.90.91.41.21.01.20.90.70.91.31.00.70.81.00.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingAndMarketingExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-11.2789.23530-2.703-16.5017.52137-17.987-29.88817-4.766-25.766-65.50619890.066-22.7792218-1.236-9.232-1.429-25.281-7.9719.45617159.013111617115.461311113.86159.0446.7692.49311108.9217.43
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.90.013.4-1.3-9.03.314.3-8.3-16.17.3-1.9-11.5-31.98.433.20.0-10.17.16.3-0.5-3.4-0.5-8.2-3.19.414.912.98.710.315.116.112.06.714.012.913.85.116.810.99.33.914.414.212.911.1

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value545455585262655954586963626664746692818487100106100212326212224231916211916161817151316161414
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.60.024.228.728.827.425.227.329.424.928.328.630.228.324.028.929.529.127.031.132.435.334.538.421.119.622.020.821.021.621.421.420.721.520.920.022.121.220.721.422.021.021.120.621.8

us-gaap:CostOfRevenue us-gaap:ProductOrService

us-gaap:Product


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2323242621323429263240343237394436
Percentage of CostOfRevenue42.642.943.945.839.951.552.149.749.256.358.253.953.157.061.759.854.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.20.010.613.111.514.113.213.614.514.016.515.416.116.114.817.316.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product28.30.021.129.329.50.023.928.635.60.030.231.134.00.027.231.033.6

us-gaap:Service


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3131313131303129272529292928242930
Percentage of CostOfRevenue57.457.156.154.260.148.547.950.350.843.741.846.146.943.038.340.245.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.40.013.615.517.313.312.113.814.910.911.813.214.212.29.211.613.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service28.80.027.328.228.40.026.926.225.20.026.026.126.90.020.226.225.7

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value222121202527252522192225262723292927283130353041101413118.7538.2567.9297.4576.9817.6478.5396.9756.5577.3536.5647.0376.5345.836.3565.8255.297
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.00.09.510.013.712.09.611.611.98.39.311.312.711.58.611.513.28.69.411.611.512.310.115.810.011.810.910.78.17.47.28.18.57.89.38.38.68.27.99.710.37.58.38.47.9

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value135158173146130166194157131176176159143168204182159226220187181185201160799595828588867264777267597066574961605552
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax71.40.075.871.371.272.674.872.770.675.171.771.469.871.776.071.170.570.973.068.967.664.765.561.678.980.478.079.279.078.478.678.679.378.579.180.077.978.879.378.678.079.078.979.478.2

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-13.08712280.385-19.2678.77832-10.911-28.84723-5.205-29.063-81.746-12.56135-4.562-36.693630-1.625-13.658-7.934-0.65-36.09812292718192527158.812117167.862016103.89316151211
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.90.012.30.2-10.53.812.7-5.0-15.59.8-2.1-13.0-39.9-5.313.1-1.8-16.311.610.1-0.6-5.1-2.8-0.2-13.812.225.122.317.518.123.124.717.210.822.119.119.810.322.519.514.76.221.120.818.516.7

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-1.7461.562-0.8344.071-1.8471.442-3.8216.5610.4963.891-1.602-2.635-19.242-29.378-54.531-2.094-12.468149.369-0.359-4.66-4.31823-28.1834.5749.1129.7986.8687.9959.239105.943.5577.0946.326.8612.8527.1736.2073.6161.4945.7044.7524.5923.98
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.90.0-0.42.0-1.00.6-1.53.00.31.7-0.7-1.2-9.4-12.5-20.3-0.8-5.54.63.1-0.1-1.7-1.57.8-10.84.57.68.06.67.48.29.16.44.37.26.98.13.78.07.55.02.47.36.26.66.0

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-06-30
Value122.943.1553.9031.4742.5673.2624.0213.2114.2312.7162.5523.8822.9678.4035.2439.4456.1428.8284.7064.1273.7950.8664.2867.2010.9735.7143.197
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.70.01.41.90.81.11.31.91.71.81.11.11.92.97.04.39.15.77.94.34.54.60.94.78.51.36.95.1

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.1542.3822.7082.7153.0744.434.6295.1736.3656.8237.0056.4275.8884.7192.7982.5652.552.4012.262.1932.3312.2822.071.7860.1920.1930.1910.1960.1940.1930.1980.1870.190.2060.2930.4010.2960.3170.4720.4770.50.5730.5990.6580.622
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.01.21.31.71.91.82.43.42.92.82.92.92.01.01.01.10.80.70.80.90.80.70.70.20.20.20.20.20.20.20.20.20.20.30.50.40.40.60.70.80.70.80.90.9

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.3931.5821.9261.8792.2983.6253.8524.5285.6395.8716.3455.6535.412
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.00.80.91.31.61.52.13.02.52.62.52.6

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-11.3411129-3.686-17.427.33636-17.472-29.34319-3.603-26.428-62.5041689-2.468-24.2222221-1.266-8.998-3.616-24.507-7.9157.6692017111116179.8835.25314119.915.00812107.0512.39910118.2487.145
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.00.012.7-1.8-9.53.214.1-8.1-15.88.2-1.5-11.8-30.57.133.3-1.0-10.77.07.0-0.5-3.3-1.3-8.0-3.07.617.514.410.810.614.815.710.76.414.812.211.76.614.512.09.73.813.814.511.910.7

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-03-312015-12-312015-03-312014-12-31
Value-11.3411129-3.686-17.427.33636-17.472-29.34319-3.603-26.428-62.504-3.616-24.5072017
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.00.012.7-1.8-9.53.214.1-8.1-15.88.2-1.5-11.8-30.5-1.3-8.017.514.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-2420000.0-3069000.0-3583000.0-3394000.0-4780000.0-3784000.0-3915000.0-3616000.0-4399000.0-6129000.0-4564000.0-5946000.0-4693000.0-5036000.0-3107000.0-3323000.0-3135000.0-1797000.0-2748000.0-2430000.0-2904000.0-3012000.0-2903000.0-828000.0-146000.0-622000.0-512000.0-543000.0-131000.0-70000.044000.0-59000.0-73000.0-217000.0-104000.0-116000.0-356000.0-323000.0-1208000.0-835000.0-399000.0-478000.0-392000.0-462000.0-440000.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.30.0-1.6-1.7-2.6-1.6-1.5-1.7-2.4-2.6-1.9-2.7-2.3-2.1-1.2-1.3-1.4-0.6-0.9-0.9-1.1-1.1-0.9-0.3-0.1-0.5-0.4-0.5-0.1-0.10.0-0.1-0.1-0.2-0.1-0.1-0.5-0.4-1.5-1.1-0.6-0.6-0.5-0.7-0.7

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value146142141142145154157164155147177182220176166183192187187186192189199196676567636562595656555450515048454544434140
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax77.00.061.969.579.167.260.676.083.762.772.081.7107.374.961.871.685.458.761.968.671.666.464.875.166.654.855.361.260.955.253.961.468.556.359.960.067.256.058.462.771.357.257.660.260.9

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-10.66716313.779-14.4871236-7.295-24.44829-0.641-23.117-77.053-7.52538-1.239-33.55538330.805-10.754-4.9222.253-35.2712302718192527158.8832117168.2162017114.29216161311
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.60.013.91.8-7.95.514.2-3.4-13.112.4-0.3-10.3-37.6-3.214.2-0.5-14.912.111.00.3-4.0-1.70.7-13.512.325.622.718.018.223.124.717.210.922.319.220.010.822.920.915.86.821.721.319.217.3

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-329000.0-823000.0-948000.0-850000.0-1971000.0-183000.0-112000.0343000.0308000.0-863000.0986000.0-812000.0254000.0-929000.0-616000.0-1168000.0-1065000.0210000.0-695000.0-466000.0-764000.0-902000.0-1022000.0786000.0-112000.0-576000.0-416000.0-445000.0-41000.024000.0176000.071000.030000.0-96000.074000.093000.0-176000.0-121000.0-150000.0-459000.02000.010000.0-3000.0-3000.04000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.20.0-0.4-0.4-1.1-0.1-0.00.20.2-0.40.4-0.40.1-0.4-0.2-0.5-0.50.1-0.2-0.2-0.3-0.3-0.30.3-0.1-0.5-0.3-0.4-0.00.00.20.10.0-0.10.10.1-0.2-0.1-0.2-0.60.00.0-0.0-0.00.0

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value424343464545485043424955555344585853586160596565181818191819181615161515141313111110109.8119.778
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.50.019.122.624.720.018.723.123.518.020.325.027.022.716.522.826.116.619.222.422.520.821.225.217.915.415.418.617.417.416.618.119.517.216.818.018.415.016.315.417.914.013.314.114.6

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1902132282051832292602161862352462232052352682562253183022722682853072611001191221031071121109281989184768983726377766966
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

us-gaap:Product


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value819911491711161431027512513411096122146142108
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.146.450.344.839.050.855.147.540.753.454.549.547.352.054.555.748.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.146.450.344.839.050.855.147.540.753.454.549.547.352.054.555.748.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value108114113113112112116113110109111113108113122113117
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax56.953.649.755.261.049.244.952.559.346.645.550.552.748.045.544.351.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax56.953.649.755.261.049.244.952.559.346.645.550.552.748.045.544.351.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:US


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value102119137120107135163139107140148136127133156153138191181182169201206195
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax54.156.060.058.558.459.062.964.557.660.060.361.162.056.658.259.861.460.260.267.263.070.467.274.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax54.156.060.058.558.459.062.964.557.660.060.361.162.056.658.259.861.460.260.267.263.070.467.274.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ntct:RestOfWorld


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value313631332831352935373435283935343253352631242816
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.617.313.916.315.313.713.613.818.816.014.015.814.116.613.213.614.216.811.79.711.68.49.26.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.617.313.916.315.313.713.613.818.816.014.015.814.116.613.213.614.216.811.79.711.68.49.26.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ntct:RestOfWorld100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Asia


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1713151313181513121818181721232519
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.16.36.86.87.58.06.16.16.77.77.48.18.79.08.69.88.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.16.36.86.87.58.06.16.16.77.77.48.18.79.08.69.88.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Asia100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3843443734444533313845333141534335
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.320.419.318.518.919.317.315.716.816.418.314.915.117.820.116.815.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.320.419.318.518.919.317.315.716.816.418.314.915.117.820.116.815.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1902132282051832292602161862352462232052352682562253183022722682853072611001191221031071121109281989184768983726377766966
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling And Marketing Expense

us-gaap:SellingAndMarketingExpense

us-gaap:SellingAndMarketingExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value656260605962677373677472787277778587837681849179383234323733323132293026302827262627272525
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.729.126.629.432.327.226.033.839.528.830.132.238.130.928.730.137.827.327.528.230.329.629.730.337.826.928.431.134.629.829.434.339.430.432.931.639.531.833.037.042.335.235.437.037.6

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value303330853146307730673120312730693194326932973243327733683359331734093601351234593494359236353604641669638591588607577541539552532561556567530500506527
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value103010791168113811371182116411291182120412531206123212991027108510921165111510851102114911051030195233206178175198182158166180171209214225205184183208
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.035.037.137.037.137.937.236.837.036.838.037.237.638.630.632.732.032.431.731.431.632.030.428.630.434.932.430.229.832.731.529.330.832.632.337.338.639.738.737.036.239.4

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value303330853146307730673120312730693194326932973243327733683359331734093601351234593494359236353604641669638591588607577541539552532561556567530500506527
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-03-312009-03-31
Value200220051978193919291937196219402011206520432036204520682331223223172436239723732391244325292573446435432412412409395382373371360352341342325315322319266225
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.065.062.963.062.962.162.863.263.063.262.062.862.461.469.467.368.067.668.368.668.468.069.671.469.665.167.669.870.267.368.570.769.267.467.762.761.460.361.363.063.860.60.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-1.877-1.940.262-1.258-2.241-3.16-3.345-3.699-3.184-2.639-0.6080.555-0.1072.895-3.472-1.501-3.688-2.914-4.645-1.5520.1962.7720.6710.212-0.676-1.817-1.461
Percentage of StockholdersEquity-0.1-0.10.0-0.1-0.1-0.2-0.2-0.2-0.2-0.1-0.00.0-0.00.1-0.1-0.1-0.1-0.1-1.1-0.40.00.70.20.1-0.2-0.7-0.6
Percentage of Assets-0.1-0.10.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.00.0-0.00.1-0.1-0.0-0.1-0.1-0.7-0.20.00.50.10.0-0.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value296829552936292429032891287328632841282828092796267626652693264226272619298292287273253237227209192
Percentage of StockholdersEquity148.2147.3148.4150.8150.4149.2146.4147.6141.2137.0137.5137.3130.9128.8110.6108.2103.9101.868.467.669.766.968.169.371.178.485.4
Percentage of Assets97.995.893.395.094.692.791.993.388.986.585.286.281.779.174.873.672.372.744.645.748.745.045.941.843.10.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value0.1240.1240.1240.1230.1220.1220.1220.1220.120.120.1190.1190.1170.1170.1160.1140.1140.1140.0510.0510.0510.050.0490.0480.0470.0460.045
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value3633743633343373553483113283583383413683963162832873113112902732502011601289163
Percentage of StockholdersEquity18.118.718.417.217.518.317.716.016.317.316.516.818.019.213.011.611.312.171.567.366.261.254.247.040.234.228.0
Percentage of Assets12.012.111.510.911.011.411.110.110.311.010.310.511.211.88.87.97.98.646.645.546.241.236.528.324.30.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-1327.273-1322.496-1321.978-1318.535-1309.038-1305.935-1255.675-1230.44-1155.252-1119.063-1104.042-1102.481-999.329-995.843-570.921-481.366-381.942-354.511-169.516-149.345-148.696-117.802-83.48-56.032-35.437-31.691-28.939
Percentage of StockholdersEquity-66.3-65.9-66.8-68.0-67.8-67.4-64.0-63.4-57.4-54.2-54.0-54.1-48.9-48.1-23.4-19.7-15.1-13.8-38.9-34.6-36.0-28.8-22.4-16.4-11.1-11.9-12.8
Percentage of Assets-43.8-42.9-42.0-42.8-42.7-41.9-40.2-40.1-36.2-34.2-33.5-34.0-30.5-29.6-15.9-13.4-10.5-9.8-25.3-23.4-25.1-19.4-15.1-9.9-6.70.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value696722762669630659654572675801802719718752713636704854745665668740753697307337315264246278248223229237219286270289236242246283
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.023.424.221.820.621.120.918.721.224.524.322.221.922.321.219.220.723.721.219.219.120.620.719.448.050.449.344.742.045.943.041.242.543.041.351.048.651.044.648.548.653.8

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-03-31
Value487467477415403338287245353409369332353369331251261304244195210210230215941041067888102889410299901601351171021033967121114986382
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.115.115.213.513.110.89.28.011.112.511.210.210.811.09.97.67.78.57.05.66.05.96.36.014.715.716.713.415.116.815.317.519.018.117.128.624.320.719.420.87.812.70.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-03-31
Value487467478416404340288246354409369332354370332252262305245196211210105
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.115.115.213.513.210.99.28.011.112.511.210.210.811.09.97.67.78.57.05.76.05.915.7

Marketable Securities Current

us-gaap:MarketableSecuritiesCurrent

us-gaap:MarketableSecuritiesCurrent


Marketable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value6.7379.2771212234756558476105119105774755138137114991081281271031121018790887556424637356974796168142133
Percentage of MarketableSecuritiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.30.40.40.81.51.81.82.62.33.23.73.22.31.41.74.13.83.32.93.13.63.52.917.615.213.815.315.112.49.77.88.66.86.612.413.414.011.513.728.125.3

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value146197208169138213244202160235247184165213249215185294284240196247244165588283493260745550736128386949494162
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.86.46.65.54.56.87.86.65.07.27.55.75.06.37.46.55.58.28.17.05.66.96.74.69.112.313.18.45.610.012.910.39.413.411.65.17.012.39.39.98.211.9

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value2022262627222426262628303234363641405452585863711212101411121110107.5637.4278.3437.4948.0219.4148.9639.5918.925
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.70.80.90.90.70.80.90.80.80.91.01.01.01.11.11.21.11.51.51.71.61.72.02.01.81.62.51.92.11.92.02.01.41.41.51.31.41.81.81.91.7

Inventory Finished Goods

us-gaap:InventoryFinishedGoods

us-gaap:InventoryFinishedGoods


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value4.0196.1685.66.0576.6175.3764.4734.956.2287.7386.7547.4278.0278.5131618162731373846505.2035.9796.896.0684.3136.3943.9233.8124.6843.3053.9584.3243.9653.5753.9773.4884.4234.35
Percentage of InventoryFinishedGoods100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.20.20.20.20.20.10.20.20.20.20.20.20.30.40.50.60.50.80.91.11.11.31.40.80.91.11.00.71.10.70.70.90.60.70.80.70.60.70.70.90.8

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value2323283625242531313527273233232929362842657849728.425139.8469.0529.328118.88.2927.2159.0439.4656.6455.5886.1625.6924.5424.7654.814
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.80.91.20.80.80.81.01.01.10.80.81.01.00.70.90.91.00.81.21.92.21.42.01.32.01.51.51.61.91.51.51.31.61.81.21.01.11.10.90.90.9

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value2582512322041861549989756350
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.48.17.16.15.24.314.914.713.711.29.6

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

ntct:ComputerEquipmentAndInternalUseSoftware


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value1771701581471351186962524538
Percentage of PropertyPlantAndEquipmentGross68.467.868.272.072.677.269.469.269.171.476.0
Percentage of Assets5.75.54.94.43.83.310.410.29.48.07.3
Percentage of Assets ntct:ComputerEquipmentAndInternalUseSoftware0.00.00.00.00.00.00.00.00.00.00.0

ntct:DemonstrationAndSparePartUnits


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value17511731286.8612108.0416.7643.517
Percentage of PropertyPlantAndEquipmentGross6.920.67.715.315.14.412.112.010.710.66.9
Percentage of Assets0.61.70.50.90.80.21.81.81.51.20.7
Percentage of Assets ntct:DemonstrationAndSparePartUnits0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value9.7429.5619.3736.5966.4365.8433.7393.6933.3372.8662.442
Percentage of PropertyPlantAndEquipmentGross3.83.84.03.23.53.83.74.14.44.54.8
Percentage of Assets0.30.30.30.20.20.20.60.60.60.50.5
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value5319461916221413118.5786.242
Percentage of PropertyPlantAndEquipmentGross20.97.820.09.58.914.614.714.715.813.512.3
Percentage of Assets1.70.61.40.60.50.62.22.22.21.51.2
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value210193173152124927566554737
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.86.25.34.53.52.611.310.910.18.37.1

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value18202020202222222224242632312828283132311710119.8430.8090.8120.8210.8560.8620.8610.860.8570.8540.80.8460.6450.5860.590.5650.4940.4820.4770.4760.4770.477
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AmortizationOfIntangibleAssets us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value3.6624.9475.1775.325.0136.6216.5646.6776.8028.1818.1768.4919.1911010109.81411111010141414
Percentage of AmortizationOfIntangibleAssets19.624.525.325.724.729.128.929.329.633.233.232.128.132.035.635.634.835.336.634.460.7141.3131.3150.4
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CostOfSales0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingExpense


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value15151515151616161616161723211818181717171710119.889
Percentage of AmortizationOfIntangibleAssets80.475.574.774.375.370.971.170.770.466.866.867.971.967.964.464.465.255.654.556.4100.3100.5100.4100.5
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:OperatingExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value464851535557585856586063605253576061616464625860242323212223212120191816171615151413
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.61.61.71.81.81.91.91.81.81.82.01.81.61.61.71.81.71.81.81.81.71.61.73.93.63.63.73.93.83.74.03.83.63.42.93.12.92.93.12.92.6

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-03-31
Value171617171714171817211725171817191717171517151712171817121716171517151718172017141710170916931702198197200201203203203202202202203181169170169141141128128
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets56.655.754.555.856.155.355.056.053.852.552.052.852.450.851.151.750.347.749.049.648.947.646.647.230.929.531.334.134.533.535.237.537.536.738.232.330.530.032.028.327.924.30.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value4945115355515695826026246486696937207568318598889069319599981023105410751102485052545658596062636556525456485047
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.316.617.017.918.618.719.320.420.320.521.022.223.124.725.626.826.625.927.328.929.329.329.630.67.67.58.29.29.69.610.411.211.511.612.310.09.49.610.69.810.09.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value4944935165335505635846066306506757027378128408698879129409791005103510561084303133353839414243456556525456485047
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.316.016.417.318.018.118.719.719.719.920.521.722.524.125.026.226.025.326.828.328.828.829.130.14.74.75.36.16.56.67.17.88.18.212.310.09.49.610.69.810.09.0

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

ntct:CoreTechnology


Finite
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.030.0590.0890.1180.1760.2330.290.3470.4190.4910.5610.6330.7490.8660.9831.0991.2672.0732.2862.512.7362.9953.2473.4583.8594.1974.5614.8715.1645.455.7065.9913.9324.0594.1764.454
Percentage of FiniteLivedIntangibleAssetsNet0.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.20.20.20.30.310.710.911.411.712.012.212.512.913.113.26.07.28.08.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.50.50.60.70.80.80.91.01.11.10.70.70.80.8
Percentage of Assets ntct:CoreTechnology0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ntct:DistributorRelationshipsAndTechnologyLicenses


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.3493.643.9314.2214.4550.4640.7391.0131.2871.6452.0022.363.1073.633.4324.6784.745.222
Percentage of FiniteLivedIntangibleAssetsNet0.70.70.80.80.80.10.10.20.20.30.30.30.40.40.40.50.50.6
Percentage of Assets0.10.10.10.10.10.00.00.00.00.10.10.10.10.10.10.10.10.1
Percentage of Assets ntct:DistributorRelationshipsAndTechnologyLicenses0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312012-09-302012-06-302012-03-31
Value0.0250.0360.0470.0620.0840.1150.1650.2340.4120.6270.8981.0311.2961.5621.8272.0632.2532.4532.6032.6971.8531.6251.1498.0835.6726.976
Percentage of FiniteLivedIntangibleAssetsNet0.00.00.00.00.00.00.00.00.10.10.10.10.20.20.20.20.30.30.30.30.20.20.114.410.812.8
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.00.01.41.01.2
Percentage of Assets us-gaap:ComputerSoftwareIntangibleAsset0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value4294414584694814925095235395545705876116696857027127267397607747917988072021222323242526262728232324
Percentage of FiniteLivedIntangibleAssetsNet86.989.688.888.087.387.387.186.385.585.384.483.782.982.381.680.880.379.678.677.777.176.475.674.569.068.366.164.763.162.061.862.061.661.243.441.245.144.4
Percentage of Assets14.214.314.615.315.715.816.317.016.917.017.318.118.719.920.421.220.920.221.022.022.222.022.022.43.23.23.53.94.14.14.44.85.05.05.34.14.24.3
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value363944485357596571738189971101201281351431531641731831972124.8555.3046.1736.9187.7298.4228.6399.505
Percentage of FiniteLivedIntangibleAssetsNet7.38.08.69.29.710.310.210.811.411.412.112.713.313.614.314.815.215.816.316.817.217.718.719.616.116.818.219.320.321.121.021.0
Percentage of Assets1.21.31.41.61.71.91.92.12.32.32.52.83.03.33.63.94.04.04.44.85.05.15.45.90.80.81.01.21.31.41.51.7
Percentage of Assets us-gaap:DevelopedTechnologyRights0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.2410.2450.2510.2550.260.2650.270.2760.2810.2850.290.2950.3010.3440.310.3160.3210.3280.3450.3760.4140.4540.4060.4490.430.3810.3760.3740.390.3590.3250.2960.2820.2080.1620.1710.1310.105
Percentage of FiniteLivedIntangibleAssetsNet0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.41.21.11.01.00.90.80.70.60.50.20.30.20.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.00.00.00.00.0
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TrademarksAndTradeNames


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value247.9679.241101112141517182021232627283031333536384042
Percentage of FiniteLivedIntangibleAssetsNet5.01.61.82.02.12.32.42.62.72.93.03.03.13.23.33.33.43.53.53.63.73.73.83.9
Percentage of Assets0.80.30.30.30.40.40.50.50.50.60.60.70.70.80.80.90.90.90.91.01.11.11.11.2
Percentage of Assets us-gaap:TrademarksAndTradeNames0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value586163656868656567
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.92.02.02.12.22.22.12.12.1

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value12151312151717131516192019127.4237.9198.1347.715.7236.0786.8587.3567.7757.5881.6171.7041.8732.132.3442.462.0472.2852.4392.8723.5232.0951.842.0082.4631.2441.3591.467
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.50.40.40.50.60.60.50.50.50.60.60.60.40.20.20.20.20.20.20.20.20.20.20.30.30.30.40.40.40.40.40.50.50.70.40.30.40.50.20.30.3

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value161719181720193425242922253032303037414545435237111310109.888118.6798.71912109.1518.3448.1067.5396.5857.8456.5799.709
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.60.60.61.10.80.80.90.70.80.91.00.90.91.01.21.31.31.21.41.01.72.01.71.71.71.91.51.62.21.81.71.51.51.31.21.61.31.8

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-31
Value5492000.07025000.0233000.0233000.0233000.0903000.01517000.01517000.01517000.01318000.0210000.0210000.0210000.01526000.03240000.06263000.05057000.05057000.0002091000.02091000.000147000.0107000.0000791000.0705000.000114000.00
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.00.0100.0100.00.00.00.0100.0100.00.00.0100.00.0
Percentage of Assets0.20.20.00.00.00.00.00.00.00.00.00.00.00.00.10.20.10.10.00.00.10.10.00.00.00.00.00.00.00.10.10.00.00.00.0

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value257269251236249270261234246272260230248301
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.58.78.07.78.18.78.47.67.78.37.97.17.69.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value367411396362357398384350349379386339359413419397402460453422424457433374148187168145141162150128132145140120125134120122118136
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.113.312.611.811.712.812.311.410.911.611.710.511.012.312.512.011.812.812.912.212.212.711.910.423.228.026.424.624.126.826.123.724.626.326.421.422.623.622.624.523.325.9

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value121211111110
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.40.3

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value2121363425212019232324323033302825292829283223277.50914119.3496.1826.437.077.2926.6717.0277.4045.9145.7996.2356.9324.8623.8264.786
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.71.21.10.80.70.60.60.70.70.71.00.91.00.90.90.80.80.80.90.80.90.70.81.22.21.71.61.11.11.21.31.21.31.41.11.01.11.31.00.80.9

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-03-312013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value3503504504504504504504505005506006006006003003003003003003003003002502500.00.00.062626262454953
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.511.314.314.614.714.414.414.715.716.818.218.518.317.88.99.08.88.38.58.78.68.36.96.90.00.00.011.011.110.911.79.19.710.1

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-31
Value8992105108111114115120124
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.03.03.43.53.63.73.73.93.8

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value2221111414106.9977.1996.191192020158.3087.4125.4324.343.9763.0983.2242.6062.9032.2915.4451.8581.9952.1472.2252.2752.372.4152.5312.672.2492.0442.112.1612.3472.172.0281.8871.721
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.70.40.50.50.30.20.20.20.60.60.60.50.20.20.20.10.10.10.10.10.10.10.20.30.30.30.40.40.40.40.50.50.40.40.40.40.40.40.40.40.3

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value586163666970
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets1.92.02.02.22.32.3

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
Value10121212
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets0.30.40.40.4

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
Value10101010
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets0.30.30.30.3

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
Value9.093101010
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets0.30.30.30.3

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2021-03-31
Value9087000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.3

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2021-03-31
Value29
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.9

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-06-30
Value7073757780787881
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.32.42.42.52.62.52.62.6

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value82858891
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets2.72.82.83.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value11121213
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0
Percentage of Assets0.40.40.40.4

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-03-312009-03-31
Value200220051978193919291937196219402011206520432036204520682331223223172436239723732391244325292573446435432412412409395382373371360352341342325315322319266225
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.065.062.963.062.962.162.863.263.063.262.062.862.461.469.467.368.067.668.368.668.468.069.671.469.665.167.669.870.267.368.570.769.267.467.762.761.460.361.363.063.860.60.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-1.877-1.940.262-1.258-2.241-3.16-3.345-3.699-3.184-2.639-0.6080.555-0.1072.895-3.472-1.501-3.688-2.914-4.645-1.5520.1962.7720.6710.212-0.676-1.817-1.461
Percentage of StockholdersEquity-0.1-0.10.0-0.1-0.1-0.2-0.2-0.2-0.2-0.1-0.00.0-0.00.1-0.1-0.1-0.1-0.1-1.1-0.40.00.70.20.1-0.2-0.7-0.6
Percentage of Assets-0.1-0.10.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.00.0-0.00.1-0.1-0.0-0.1-0.1-0.7-0.20.00.50.10.0-0.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value296829552936292429032891287328632841282828092796267626652693264226272619298292287273253237227209192
Percentage of StockholdersEquity148.2147.3148.4150.8150.4149.2146.4147.6141.2137.0137.5137.3130.9128.8110.6108.2103.9101.868.467.669.766.968.169.371.178.485.4
Percentage of Assets97.995.893.395.094.692.791.993.388.986.585.286.281.779.174.873.672.372.744.645.748.745.045.941.843.10.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value0.1240.1240.1240.1230.1220.1220.1220.1220.120.120.1190.1190.1170.1170.1160.1140.1140.1140.0510.0510.0510.050.0490.0480.0470.0460.045
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value3633743633343373553483113283583383413683963162832873113112902732502011601289163
Percentage of StockholdersEquity18.118.718.417.217.518.317.716.016.317.316.516.818.019.213.011.611.312.171.567.366.261.254.247.040.234.228.0
Percentage of Assets12.012.111.510.911.011.411.110.110.311.010.310.511.211.88.87.97.98.646.645.546.241.236.528.324.30.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-12-312015-09-302015-03-312014-12-312014-09-302014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-1327.273-1322.496-1321.978-1318.535-1309.038-1305.935-1255.675-1230.44-1155.252-1119.063-1104.042-1102.481-999.329-995.843-570.921-481.366-381.942-354.511-169.516-149.345-148.696-117.802-83.48-56.032-35.437-31.691-28.939
Percentage of StockholdersEquity-66.3-65.9-66.8-68.0-67.8-67.4-64.0-63.4-57.4-54.2-54.0-54.1-48.9-48.1-23.4-19.7-15.1-13.8-38.9-34.6-36.0-28.8-22.4-16.4-11.1-11.9-12.8
Percentage of Assets-43.8-42.9-42.0-42.8-42.7-41.9-40.2-40.1-36.2-34.2-33.5-34.0-30.5-29.6-15.9-13.4-10.5-9.8-25.3-23.4-25.1-19.4-15.1-9.9-6.70.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value124000.0124000.0124000.0123000.0122000.0122000.0122000.0122000.0120000.0120000.0119000.0119000.0117000.0117000.0117000.0116000.0116000.0116000.0116000.0115000.0114000.0114000.0114000.0114000.051000.051000.051000.051000.050000.050000.050000.050000.049000.049000.049000.049000.048000.048000.048000.048000.048000.047000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value296829552936292429032891287328632841282828092796267626652735272327032693267626662650264226272619302298292287278273267263256253248245239237232231229227
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets97.995.893.395.094.692.791.993.388.986.585.286.281.779.181.482.179.374.876.277.175.873.672.372.747.144.645.748.747.345.046.348.747.645.946.743.843.041.843.946.345.343.1

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value363374363334337355348311328358338341368396379289292316294273274283287311319311290273262250233216206201186175165160147137130128
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.012.111.510.911.011.411.110.110.311.010.310.511.211.811.38.78.68.88.47.97.97.97.98.649.846.645.546.244.641.240.540.038.336.535.131.329.828.327.927.625.824.3

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-1877000.0-1940000.0262000.0-1258000.0-2241000.0-3160000.0-3345000.0-3699000.0-3184000.0-2639000.0-608000.0555000.0-107000.02895000.046000.0505000.0-2029000.0-3472000.0-3955000.0-1705000.0-1735000.0-1501000.0-3688000.0-2914000.0-2858000.0-4645000.0-1552000.0196000.02416000.02772000.02521000.02082000.0878000.0671000.01450000.0793000.0-936000.0212000.0-1851000.0-864000.0-582000.0-676000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.1-0.10.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.00.0-0.00.10.00.0-0.1-0.1-0.1-0.0-0.0-0.0-0.1-0.1-0.4-0.7-0.20.00.40.50.40.40.20.10.30.1-0.20.0-0.3-0.2-0.1-0.1

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1327132213211318130913051255123011551119110411029999957837816765705695645314813813541721691491481291171089990837670625653533635
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets43.842.942.042.842.741.940.240.136.234.233.534.030.529.623.323.619.815.916.216.315.213.410.59.826.925.323.425.122.119.418.818.416.915.114.412.511.29.910.110.67.36.7

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value249265114410769-1.0024980367.186257376195220362425116.31922146.7323
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.643.128.55.724.446.826.7-0.526.634.215.03.212.431.328.67.623.324.147.327.331.216.010.028.818.59.735.7

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-0.0320.508-3.9247.57120-3.492-2.24820-19.485255.817-23.075-34.102-30.7375.85738.55411-10.51-8.215-26.29972-28.994-75.35-8.5181013
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.2-1.73.711.2-1.5-0.99.7-10.510.72.4-10.3-16.6-13.12.228.63.813.9-13.8-9.2-31.6100.1-45.8-96.6-11.215.619.5

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-4777000.0-101270000.0-3442000.0-9496000.0-4103000.0-50260000.0-25235000.0-127660000.0-83720000.0-65021000.0-3889000.0-6889000.0-3486000.0-7346000.0-1929000.0-106310000.0-105380000.0-6702000.0-7861000.0-1716000.0-743000.0-19939000.0-5020000.0-1445000.01833000.0-1608000.0-2159000.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.5-47.5-1.5-4.6-2.2-21.9-9.7-59.0-45.0-27.7-1.6-3.1-1.7-3.1-0.7-41.4-46.7-7.9-10.3-1.9-0.9-27.5-7.9-1.92.4-2.3-3.2

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value19-11.3276212635142-108.846-54.914036-21.956-16.4053780-10.168-43.14460
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.5-5.327.16.034.722.516.4-50.3-29.517.315.0-9.8-8.016.129.9-4.0-19.118.8

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-2896000.0-13366000.0-3814000.0-2902000.0-3722000.0-1341000.0-5535000.0-3775000.0830000.0-5775000.0-5378000.0-7983000.0-14306000.0-27742000.0-82707000.0-8771000.0-8564000.027249000.0-12929000.0-14000000.0-11328000.0-49102000.02815000.03927000.0239000.0585000.0391000.0351000.01409000.0955000.02436000.01205000.0618000.0-2328000.02327000.01476000.02434000.02194000.02095000.0933000.0230000.03532000.0-2411000.01164000.01174000.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2426262726282829293131344040373737394040404245464.9865.264.6964.8774.8764.4864.2624.6534.8593.6384.7574.6944.3754.4514.2144.1963.7813.5083.4943.4033.472
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-1.084-1.1450.751.084-2.4230.359-14.74610-0.634-4.45810-4.312-5.206-3.5512.714-0.966-7.126-2.04-1.969-0.4444.858-11.33618-3.383-1.6292.0550.5260.332-1.5582.7530.256-3.4811.970.792-4.4360.3850.9140.557-1.4231.818-3.1474.369-0.894-2.1061.214
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-51.773-10.1563730-75.152-31.0264242-75.092-11.7486318-47.939-37.5133427-109.5729.4784544-50.757-3.27579-28.966-23.729-1.1723316-27.551-13.753184.717-22.9881228-9.941-30.91120-2.6068.316-21.8996.009151.13-25.238
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-1132000.0-3040000.0-389000.0-72000.05544000.0-2734000.0-1251000.01276000.01208000.0-2638000.0-1791000.0-1030000.0138000.0-2228000.0174000.0-3689000.04737000.0-14999000.02782000.0-3953000.03714000.0-356000.02001000.0-8974000.01806000.01858000.0-4230000.03483000.0-612000.01452000.0400000.0-212000.05158000.0135000.0-2473000.0849000.056000.0-1393000.0337000.01282000.0666000.0-23000.0-2464000.02796000.0783000.0
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value249265114410769-1.0024980367.186257376195220362425116.31922146.7323
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.643.128.55.724.446.826.7-0.526.634.215.03.212.431.328.67.623.324.147.327.331.216.010.028.818.59.735.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-11.3411129-3.686-17.427.33636-17.472-29.34319-3.603-26.428-62.5041689-2.468-24.2222221-1.266-8.998-3.616-24.507-7.9157.6692017111116179.8835.25314119.915.00812107.0512.39910118.2487.145
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.05.412.7-1.8-9.53.214.1-8.1-15.88.2-1.5-11.8-30.57.133.3-1.0-10.77.07.0-0.5-3.3-1.3-8.0-3.07.617.514.410.810.614.815.710.76.414.812.211.76.614.512.09.73.813.814.511.910.7

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-03-312015-12-312015-03-312014-12-31
Value-11.3411129-3.686-17.427.33636-17.472-29.34319-3.603-26.428-62.504-3.616-24.5072017
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.05.412.7-1.8-9.53.214.1-8.1-15.88.2-1.5-11.8-30.5-1.3-8.017.514.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value13111215121011151212131712121212108.91810118.1327.9518.3027.5034.5954.6334.154.4953.3022.9713.2173.932.8122.3372.4642.5432.2472.5342.171.7882.1592.31.461.5011.178
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-0.0320.508-3.9247.57120-3.492-2.24820-19.485255.817-23.075-34.102-30.7375.85738.55411-10.51-8.215-26.29972-28.994-75.35-8.5181013
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.2-1.73.711.2-1.5-0.99.7-10.510.72.4-10.3-16.6-13.12.228.63.813.9-13.8-9.2-31.6100.1-45.8-96.6-11.215.619.5

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.5782.8763.3413.1642.6054.7156.1515.7693.2873.937.2555.7396.4683.5614.7984.2573.2977.9975.9516.539.218104.8945.6983.4154.1784.6142.1511.8654.3572.2014.1282.383.6363.641.9512.7213.4362.062.0853.7073.3091.5720.5172.093
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-4777000.0-101270000.0-3442000.0-9496000.0-4103000.0-50260000.0-25235000.0-127660000.0-83720000.0-65021000.0-3889000.0-6889000.0-3486000.0-7346000.0-1929000.0-106310000.0-105380000.0-6702000.0-7861000.0-1716000.0-743000.0-19939000.0-5020000.0-1445000.01833000.0-1608000.0-2159000.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.5-47.5-1.5-4.6-2.2-21.9-9.7-59.0-45.0-27.7-1.6-3.1-1.7-3.1-0.7-41.4-46.7-7.9-10.3-1.9-0.9-27.5-7.9-1.92.4-2.3-3.2

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.00.050256930140.00.00.03010.01001001.4224.918335099271813.167200.64918129.2898.6848.8797.476.7216.5867.7286.4132.6560.142161.4260.00.00.00.0
Percentage of PaymentsForRepurchaseOfCommonStock0.00.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:ShareRepurchaseProgram

ntct:ShareRepurchaseProgramOctober2017


Payments
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-06-302018-02-022018-02-01
Value0.03.20.050256633182182
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.0100.0100.096.4108.10.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-13.3-1.73.01057.4-0.0961.9590.116-0.601-0.0170.0090.3080.0910.235-6.053-1.5510.4590.34-36.3410.3060.2210.3410.11536.7030.7810.374-0.0230.3570.3790.411-0.0070.3670.3750.4040.3630.006-0.0010.3630.0140.007-0.0030.3450.002-0.02-0.0020.358
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-31
Value84108117144271279
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value7971555560824443433737
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value913000.01151000.01314000.02215000.02926000.01588000.01038000.0421000.0370000.0335000.0383000.0349000.0314000.0
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value115.6410.8353.1083.3743.7773.9064.9413.7953.5290.249
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ntct:AmortizationofAcquiredIntangibleAssets

ntct:AmortizationofAcquiredIntangibleAssets


Amortizationof
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value15151515151616161616161723211818181717171710119.843
Percentage of AmortizationofAcquiredIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ntct:IncreaseDecreaseInOperatingLeaseLiabilities

ntct:IncreaseDecreaseInOperatingLeaseLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2.9842.3842.7552.5342.6343.3873.1253.143.425
Percentage of IncreaseDecreaseInOperatingLeaseLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0

ntct:IncreaseDecreaseInOperatingLeaseRightOfUseAsset

ntct:IncreaseDecreaseInOperatingLeaseRightOfUseAsset


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-06-30
Value2.6792.1842.632.6142.5762.6322.7662.5542.5520.0
Percentage of IncreaseDecreaseInOperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

ntct:PaymentsOfContingentConsideration us-gaap:BusinessAcquisition

ntct:PaymentsOfContingentConsideration

ntct:Gigavation


Payments
Period End2021-02-28
Value700000.0
Percentage of PaymentsOfContingentConsideration100.0

ntct:PaymentsOfContingentConsideration us-gaap:StatementScenario, us-gaap:BusinessAcquisition

srt:ScenarioForecast, ntct:Gigavation


Payments
Period End2021-02-28
Value700000.0
Percentage of PaymentsOfContingentConsideration100.0

ntct:ProceedsFromDivestitureOfBusinessesTransitionalServices

ntct:ProceedsFromDivestitureOfBusinessesTransitionalServices


Proceeds
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-30
Value100000.0100000.0-25000.0300000.01200000.01200000.0
Percentage of ProceedsFromDivestitureOfBusinessesTransitionalServices100.0100.0100.0100.0100.0100.0

ntct:RestructuringChargesAndOtherAdjustments

ntct:RestructuringChargesAndOtherAdjustments


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.00.0-0.0310.0932.2050.1791.144132.2841.661.4953.59
Percentage of RestructuringChargesAndOtherAdjustments0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ntct:RestructuringChargesAndOtherAdjustments us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:EmployeeSeverance, ntct:EmployeeRelatedRestructuringPlanQ42020


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-30
Value0.00.0-0.0310.093
Percentage of RestructuringChargesAndOtherAdjustments0.00.0100.0100.0

ntct:TransfersFromInventoryToFixedAssets

ntct:TransfersFromInventoryToFixedAssets


Transfers
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value949000.0001039000.0491000.0001428000.0862000.000563000.01589000.0001294000.04262000.0002255000.02673000.0-626000.0167000.0459000.01229000.0000940000.00001781000.0000583000.000346000.01564000.000
Percentage of TransfersFromInventoryToFixedAssets100.00.00.0100.0100.00.00.0100.0100.00.00.0100.0100.00.00.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0100.0100.00.00.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation us-gaap:AwardType

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:RestrictedStockUnitsRSU


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4.80.50.29.53.10.30.28.43.00.51.56.43.5
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-03-312015-12-312015-03-312014-12-31
Value131011151110101512111315117.2668.3024.3863.937
Percentage of AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-03-312015-12-312015-03-312014-12-31
Value131011151110101512111315117.2668.3024.3863.937
Percentage of AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableRecoveries

us-gaap:AllowanceForDoubtfulAccountsReceivableRecoveries


Allowance
Period End2021-06-302021-03-312020-12-31
Value2000.0112000.088000.0
Percentage of AllowanceForDoubtfulAccountsReceivableRecoveries100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs


Allowance
Period End2021-06-302021-03-312020-12-31
Value11000.0189000.00
Percentage of AllowanceForDoubtfulAccountsReceivableWriteOffs100.0100.00.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-06-30
Value76000.0102000.0-374000.0296000.0309000.0136000.0-119000.0-556000.0794000.0-735000.0-739000.01875000.054000.01065000.0731000.0-939000.0522000.0184000.0695000.0-12000.0374000.0-1381000.0285000.0-214000.0245000.0-567000.0260000.025000.095000.0-109000.0297000.0-67000.03000.0-216000.0-120000.0258000.0232000.088000.0648000.0
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostAmortization

us-gaap:CapitalizedContractCostAmortization


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1600000.01600000.01600000.01500000.01600000.01700000.01600000.01600000.01600000.01700000.01500000.01800000.0600000.0
Percentage of CapitalizedContractCostAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-31
Value963363
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanInterestCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value91000.0384000.097000.093000.093000.0296000.0105000.0106000.096000.0342000.0118000.0123000.0121000.0313000.0132000.0136000.0381000.0118000.0199000.0157000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value136000.0558000.0152000.0145000.0145000.0506000.0150000.0151000.0137000.0459000.0179000.0186000.0184000.0512000.0199000.0206000.0578000.0179000.0302000.0238000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DefinedBenefitPlanServiceCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value45000.0174000.055000.052000.052000.0210000.045000.045000.041000.0117000.061000.063000.063000.0199000.067000.070000.0197000.061000.0103000.081000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeGainOnDerivative us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeGainOnDerivative

us-gaap:ForwardContracts


Derivative
Period End2021-03-312020-12-312020-09-30
Value39000.030000.046000.0
Percentage of DerivativeGainOnDerivative100.0100.0100.0

us-gaap:DerivativeGainOnDerivative us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:ForwardContracts, us-gaap:GeneralAndAdministrativeExpense


Derivative
Period End2021-03-312020-12-312020-09-30
Value39000.030000.046000.0
Percentage of DerivativeGainOnDerivative100.0100.0100.0

us-gaap:DerivativeLossOnDerivative us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLossOnDerivative

us-gaap:ForwardContracts


Derivative
Period End2021-06-30
Value248000.0
Percentage of DerivativeLossOnDerivative100.0

us-gaap:DerivativeLossOnDerivative us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:ForwardContracts, us-gaap:GeneralAndAdministrativeExpense


Derivative
Period End2021-06-30
Value248000.0
Percentage of DerivativeLossOnDerivative100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value745000.0-2587000.04145000.02623000.02446000.0-1904000.0745000.0-1105000.0-1163000.0168000.0-1865000.0822000.0-4337000.02456000.0-370000.03251000.01048000.01234000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements


Fair
Period End2020-12-31
Value0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements0.0

us-gaap:FinitelivedIntangibleAssetsAcquired1 us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FinitelivedIntangibleAssetsAcquired1

us-gaap:TradeNames


Finitelived
Period End2021-06-30
Value18
Percentage of FinitelivedIntangibleAssetsAcquired1100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-1000.0-199000.00-4000.0-33000.00-16000.000-79000.0-7000.0-111000.0-63000.0-23000.0-37000.0-10000.0-411000.0-172000.0-41000.0-20000.0-38000.0-3000.091000.0-212000.0-10000.0236000.0-536000.000-1000.0-1000.0-13000.0-24000.0-33000.0-47000.00-24000.0-19000.0-22000.0-57000.0-70000.0-36000.0-15000.0-58000.0-18000.0
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.00.0100.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2021-06-302021-03-312020-12-31
Value-1462000.03445000.0-4486000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-312011-03-31
Value-1461000.06494000.0361000.0207000.0-378000.0-943000.072000.0-133000.085000.01115000.05000.0123000.0-1882000.0-1448000.0-3055000.01584000.0185000.05079000.025000.0-2091000.0-5000.02091000.00-147000.040000.0107000.000-791000.086000.0705000.00-114000.0114000.000-1652000.0
Percentage of IncreaseDecreaseInAccruedIncomeTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.00.0100.0100.00.00.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-13.3341917-14.008-25.4719.46734-10.529-24.9172138-13.74-31.3875.11535-9.543-39.521
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-29.4329.2611322-13.221162011-16.332-8.421129.8475.5661.166-10.80412-20.7873.859164.067-18.108-1.9862332-20.9553.1019.4612-11.5944.4758.146.118-11.9994.3396.6244.494-4.7183.043.8024.063-9.2682.9472.9924.213-6.714
Percentage of IncreaseDecreaseInEmployeeRelatedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value7.416-9.162-6.6514.1630.167-2.8820.332-7.051-4.2382.548-0.831-8.1773.4269.177-30.9920.5161.15232-15.362.3445.429-6.862-0.40843-6.6542.026-3.2245.42-2.0534.186-1.6851.084-0.744-9.7490.9273.573-0.1420.0751.2630.14-0.6032.956-2.26-0.186-0.914
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value63000.0136000.073000.0171000.0265000.0829000.0826000.01214000.01658000.01557000.01455000.01293000.0941000.0612000.0307000.0410000.0480000.0394000.0207000.0229000.0191000.0172000.0189000.0172000.0158000.0147000.095000.098000.0104000.099000.066000.057000.087000.085000.0115000.0192000.0116000.0115000.0104000.0101000.099000.085000.0210000.0199000.0178000.0
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value4.6684.7384.9765.8984.9575.096.1145.2365.309
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.2753.2893.2773.2633.2623.3383.4593.2763.245
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-5000.0-8000.0-15000.0-33000.0-74000.086000.03000.02000.035000.0
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value19000.0-449000.01482000.0940000.0953000.0-855000.0297000.0-525000.0-561000.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value19000.0-449000.01482000.0940000.0953000.0-855000.0297000.0-525000.0-561000.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value49000.0-197000.053000.076000.040000.0-100000.054000.08000.0-19000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value49000.0-197000.053000.076000.040000.0-100000.054000.08000.0-19000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value129000.0-111000.0132000.0181000.08000.0-96000.084000.0-5000.0-54000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax us-gaap:DerivativeInstrumentRisk

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

us-gaap:ForwardContracts


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value169000.0-146000.0172000.0236000.011000.0-127000.0124000.0-27000.0-73000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:ForwardContracts, us-gaap:ResearchAndDevelopmentExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value169000.0-146000.0172000.0236000.011000.0-127000.0124000.0-27000.0-73000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value40000.0-35000.040000.055000.03000.0-31000.040000.0-22000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value80000.086000.079000.0105000.0-32000.04000.030000.0-13000.0-35000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax us-gaap:DerivativeInstrumentRisk

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax

us-gaap:ForwardContracts


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-105000.0-112000.0-103000.0-137000.042000.0-5000.0-37000.024000.046000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:ForwardContracts, us-gaap:ResearchAndDevelopmentExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-8000.0-23000.0-21000.0-22000.08000.0-3000.0-8000.0-4000.0-5000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax7.620.520.416.119.060.021.6-16.7-10.9

us-gaap:ForwardContracts, us-gaap:SellingAndMarketingExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-97000.0-89000.0-82000.0-115000.034000.0-2000.0-29000.028000.051000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax92.479.579.683.981.040.078.4116.7110.9

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-25000.0-26000.0-24000.0-32000.010000.015000.07000.0-11000.011000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


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
Value63000.0-2202000.01520000.0983000.0919000.0185000.0354000.0-515000.0-545000.0-2031000.0-1163000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-5000.0-8000.0-15000.0-33000.0-74000.086000.03000.02000.035000.025000.012000.0-5000.028000.026000.0-41000.013000.0-4000.029000.0-49000.0-80000.041000.070000.0-125000.0117000.0-59000.042000.0-75000.0-23000.044000.0-2000.03000.039000.0-35000.012000.0-24000.037000.084000.01203000.017000.048000.089000.0365000.0-200000.0301000.0470000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-03-312015-12-312015-03-312014-12-31
Value-5000.0-8000.0-15000.0-33000.0-74000.086000.03000.02000.035000.025000.012000.0-5000.028000.070000.0-125000.042000.0-75000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-06-30
Value-1000.0-3000.0-5000.0-10000.0-23000.027000.01000.05000.06000.0-2000.012000.0-20000.029000.01000.0-22000.08000.0-2000.000000146000.00073000.00-41000.017000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0100.00.00.0100.00.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value-217000.0195000.0-45000.0187000.0-120000.04000.081000.0-54000.0-2000.02000.0206000.050000.0664000.0-116000.0-616000.0-260000.0134000.0220000.017000.0287000.053000.0-19000.0-42000.0-84000.01000.0-57000.0-28000.017000.062000.007000.0-13000.0-5000.028000.0-7000.018000.0102000.0-67000.0000
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities


Payment
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312017-03-312016-12-31
Value748000.0001000000.0000002328000.00000
Percentage of PaymentForContingentConsiderationLiabilityFinancingActivities100.00.00.0100.00.00.00.00.00.0100.00.00.00.00.0

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities us-gaap:BusinessAcquisition

ntct:Gigavation


Payment
Period End2021-02-28
Value700000.0
Percentage of PaymentForContingentConsiderationLiabilityFinancingActivities0.0

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsForRestructuring


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.00.00.5341.3290.6040.0192.431123.912.760.9510.982
Percentage of PaymentsForRestructuring0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:EmployeeSeverance, ntct:EmployeeRelatedRestructuringPlan2019


Payments
Period End2020-12-312020-09-302020-06-302019-12-31
Value0.00.00.0030.019
Percentage of PaymentsForRestructuring0.00.00.2100.0

us-gaap:EmployeeSeverance, ntct:EmployeeRelatedRestructuringPlanQ42020


Payments
Period End2021-03-312020-12-312020-09-302020-06-30
Value0.00.00.5341.326
Percentage of PaymentsForRestructuring0.00.0100.099.8

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value4.7770.5180.1689.4973.1030.260.2358.3653.0120.5541.5616.3683.4860.6411.935.6465.3810.7152.2216.5550.068
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireIntangibleAssets

us-gaap:PaymentsToAcquireIntangibleAssets


Payments
Period End2021-03-312020-12-312020-09-302020-06-302019-06-302019-03-312018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value00300000.04237000.000039000.00505000.009000.02000.01000000.020000.03808000.02000.064000.088000.043000.039000.021000.071000.0373000.0560000.043000.0110000.080000.0
Percentage of PaymentsToAcquireIntangibleAssets0.00.0100.0100.00.00.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PaymentsToAcquireMarketableSecurities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value5.6961.6997.1941.0375.743276.338424145486669421322356482173525339.255325420154239452518182122582821264010420262.265
Percentage of PaymentsToAcquireMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions


Proceeds
Period End2021-03-312020-12-312020-03-312019-12-312019-03-312018-12-312018-03-312017-12-312017-03-312016-12-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-06-30
Value01000.0001000.0001000.001000.001000.0038000.059000.08000.0440000.0102000.0213000.0161000.0341000.014000.068000.0146000.0
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions0.0100.00.00.0100.00.00.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromOtherDeposits

us-gaap:ProceedsFromOtherDeposits


Proceeds
Period End2021-06-302020-12-312020-09-302020-06-302019-06-302018-06-30
Value12000.0-1000.04000.0102000.004000.0
Percentage of ProceedsFromOtherDeposits100.0100.0100.0100.00.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value8.235.16.61212333510692875615241162410847365833533023461928242213161621121050515023271013232133817
Percentage of ProceedsFromSaleAndMaturityOfMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-03-312020-12-31
Value-2000.025000.0
Percentage of ProvisionForDoubtfulAccounts100.0100.0

us-gaap:RepaymentsOfLinesOfCredit us-gaap:SubsequentEventType

us-gaap:RepaymentsOfLinesOfCredit

us-gaap:SubsequentEvent


Repayments
Period End2021-01-292019-08-062019-05-07
Value1005050
Percentage of RepaymentsOfLinesOfCredit100.0100.0100.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value0.00.0-0.0310.0932.2080.1930.150.1231.179132.4721.1471.3883.3630.2910.1672.271-0.199-0.1052.0340.00.5720.00.00.00.00.00.00.00.00.0-0.0011.1530.0870.2310.3720.00.00.00.0
Percentage of RestructuringCharges0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:RestructuringReserveAccrualAdjustment1

us-gaap:RestructuringReserveAccrualAdjustment1


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0027000.054000.0-55000.0-4000.074000.0186000.0-833000.0-58000.0-228000.0
Percentage of RestructuringReserveAccrualAdjustment10.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringReserveAccrualAdjustment1 us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:EmployeeSeverance, ntct:EmployeeRelatedRestructuringPlanQ42020


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-30
Value0027000.054000.0
Percentage of RestructuringReserveAccrualAdjustment10.00.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.590.1080.01.7945.6533.4250.2221.827
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value560000.0494000.0804000.01567000.0813000.0742000.01681000.0897000.0852000.0
Percentage of ShortTermLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssued1

us-gaap:StockIssued1


Stock
Period End2021-03-312020-12-312020-03-312019-12-312019-03-312018-12-312018-03-312017-12-312017-03-312016-12-312016-03-312015-12-312015-03-312014-12-312014-03-312013-12-312013-03-312012-12-312011-12-31
Value7.9540.07.6340.07.4990.09.2460.08.7540.07.5320.03.1290.02.7650.02.3210.00.0
Percentage of StockIssued1100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.00.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan


Stock
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302016-03-312015-12-312015-03-312014-12-31
Value7.9540.06.4757.6340.06.5937.4990.07.5757.5320.03.1290.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.00.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302016-03-312015-12-312015-03-312014-12-31
Value7.9540.06.4757.6340.06.5937.4990.07.5757.5320.03.1290.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.00.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-03-312015-12-312015-03-312014-12-31
Value01000.01000.00002000.001000.002000.000000
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation0.0100.0100.00.00.00.0100.00.0100.00.0100.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:CommonStock


Stock
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-03-312015-12-312015-03-312014-12-31
Value01000.01000.00002000.001000.002000.000000
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation0.0100.0100.00.00.00.0100.00.0100.00.0100.00.00.00.00.00.0

us-gaap:TreasuryStockValueAcquiredParValueMethod

us-gaap:TreasuryStockValueAcquiredParValueMethod


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-03-312015-12-312015-03-312014-12-31
Value4.7770.5183.4439.4973.10350257536151.5616.3693.4869927200.649
Percentage of TreasuryStockValueAcquiredParValueMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredParValueMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-03-312015-12-312015-03-312014-12-31
Value4.7770.5183.4439.4973.10350257536151.5611033.4869927200.649
Percentage of TreasuryStockValueAcquiredParValueMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.01619.6100.0100.0100.0100.0100.0

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


Variable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value833000.0955000.0895000.01068000.0882000.01010000.0974000.01063000.01212000.0
Percentage of VariableLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberOfSharesRestrictedStock

us-gaap:WeightedAverageNumberOfSharesRestrictedStock


Weighted
Period End2021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value54000.0386000.000333000.0000000-61000.0650000.00034000.0640000.000000595000.0-17000.0323000.0581000.0710000.046000.0416000.0482000.0578000.013000.0478000.0515000.0576000.029000.0639000.0334000.0188080.037000.0758000.0541000.0339560.0
Percentage of WeightedAverageNumberOfSharesRestrictedStock100.0100.00.00.0100.00.00.00.00.00.00.0100.0100.00.00.0100.0100.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityPublicFloat

dei:EntityPublicFloat


Entity
Period End2020-09-302019-09-30
Value15461654
Percentage of EntityPublicFloat100.0100.0

ntct:DeferredTaxAssetsOperatingLeaseLiability

ntct:DeferredTaxAssetsOperatingLeaseLiability


Deferred
Period End2021-03-312020-03-31
Value1718
Percentage of DeferredTaxAssetsOperatingLeaseLiability100.0100.0

ntct:DeferredTaxLiabilitiesDepreciation

ntct:DeferredTaxLiabilitiesDepreciation


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value7818000.09492000.07134000.04187000.08695000.06630000.0732000.00113000.00
Percentage of DeferredTaxLiabilitiesDepreciation100.0100.0100.0100.0100.0100.0100.00.0100.00.0

ntct:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset

ntct:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset


Deferred
Period End2021-03-312020-03-31
Value1415
Percentage of DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset100.0100.0

ntct:FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour

ntct:FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour


Finite
Period End2021-06-302020-12-312020-09-30
Value214255253
Percentage of FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour100.0100.0100.0

ntct:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour

ntct:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour


Lessee
Period End2021-06-302020-12-312020-09-30
Value293838
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour100.0100.0100.0

ntct:SocialSecurityTaxEmployerDeferralCARESAct

ntct:SocialSecurityTaxEmployerDeferralCARESAct


Social
Period End2021-06-302021-03-312020-12-312020-09-30
Value8900000.08900000.08900000.07400000.0
Percentage of SocialSecurityTaxEmployerDeferralCARESAct100.0100.0100.0100.0

ntct:UnrecognizedAccountsReceivableAndDeferredRevenue

ntct:UnrecognizedAccountsReceivableAndDeferredRevenue


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value8.27.15.45.710114.95.07.0232210.01820172.02.09.01.00.120.183
Percentage of UnrecognizedAccountsReceivableAndDeferredRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value407000.0416000.0719000.0782000.0853000.01350000.0
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value407000.0416000.0719000.0782000.0853000.01350000.01728000.02280000.01690000.01583000.01705000.01209000.01473000.01991000.01675000.01689000.01186000.02066000.08753000.06838000.06212000.05069000.04720000.08984000.0142000.0173000.0177000.0181000.0263000.0313000.0147000.0147000.0897000.0971000.01033000.0333000.0565000.0226000.0259000.0301000.0233000.0346000.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value493476490427426389346308443487478454459447383313410464376315343368392370267264240217234219182159162154136235239213192198209228
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value488469482420415374321282403421406378371387349274300353284214236253273256161160153125135114173151150136120203203168155155162177
Percentage of AssetsFairValueDisclosure98.898.698.398.297.596.292.791.791.086.485.183.380.986.491.387.473.376.075.668.168.968.969.669.260.260.863.757.957.952.294.894.692.688.787.786.285.179.081.178.077.777.7

us-gaap:FairValueInputsLevel2


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value5.7166.7958.4087.78410142525396569738760333910911192889898102951061038791981049.5198.59712171632354319262933
Percentage of AssetsFairValueDisclosure1.21.41.71.82.53.87.28.28.913.514.516.219.113.68.712.626.724.024.428.228.726.826.225.739.839.236.342.142.147.85.25.47.411.312.313.814.920.310.013.214.114.7

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.7379.27121223505862897710611910578
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

ntct:ShortTermMarketableSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.7379.27121223475655847610511910578
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.094.995.787.994.398.799.1100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument, us-gaap:InvestmentType

ntct:ShortTermMarketableSecurities, us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.6985.6997.1966.59510142425374850545633
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis84.661.556.854.646.029.042.440.342.063.047.645.653.842.3

ntct:ShortTermMarketableSecurities, us-gaap:CorporateDebtSecurities


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value1.9161.9081.9214.5874.1674.1812.6631.0052.7622.7462.754
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis15.115.88.39.17.16.73.00.92.32.63.5

ntct:ShortTermMarketableSecurities, us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.0393.5713.5593.58510282725442753624642
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis15.438.528.129.745.756.846.240.949.335.750.652.143.654.2

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-03-31
Value6.7379.2771212234756558476105119105774755138137114991081281271031121018790887556424637356974796168133
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.7379.277121223505862897710611910577
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:CorporateDebtSecurities


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-31
Value1.9171.9181.9364.5974.1764.191.012
Percentage of AvailableForSaleSecuritiesDebtSecurities15.115.88.39.17.16.71.3

us-gaap:FairValueInputsLevel1, us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-31
Value1.0392.5392.5382.5761031293310
Percentage of AvailableForSaleSecuritiesDebtSecurities15.427.420.021.245.962.050.653.013.9

us-gaap:FairValueInputsLevel2, us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-31
Value5.6985.6997.1966.5951014242548
Percentage of AvailableForSaleSecuritiesDebtSecurities84.661.456.754.445.829.042.340.363.0

us-gaap:FairValueInputsLevel2, us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-31
Value1.0391.0381.0380.00.00.016
Percentage of AvailableForSaleSecuritiesDebtSecurities11.28.28.60.00.00.021.8

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

ntct:ShortTermMarketableSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.7379.277121223475655847610511910577
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.094.895.687.894.398.799.1100.0100.0100.0

us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-31
Value5.6985.6997.1966.5951014242548
Percentage of AvailableForSaleSecuritiesDebtSecurities84.661.456.754.445.829.042.340.363.0

us-gaap:CorporateDebtSecurities


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-31
Value1.9171.9181.9364.5974.1764.191.012
Percentage of AvailableForSaleSecuritiesDebtSecurities15.115.88.39.17.16.71.3

us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-31
Value1.0393.5783.5763.6141031293327
Percentage of AvailableForSaleSecuritiesDebtSecurities15.438.628.229.845.962.050.653.035.7

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument, us-gaap:InvestmentType

ntct:ShortTermMarketableSecurities, us-gaap:CommercialPaper


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.6985.6997.1966.59510142425374850545633
Percentage of AvailableForSaleSecuritiesDebtSecurities84.661.456.754.445.829.042.340.342.063.047.645.653.842.3

ntct:ShortTermMarketableSecurities, us-gaap:CorporateDebtSecurities


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value1.9171.9181.9364.5974.1764.192.6691.0052.7612.7452.752
Percentage of AvailableForSaleSecuritiesDebtSecurities15.115.88.39.17.16.73.00.92.32.63.5

ntct:ShortTermMarketableSecurities, us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.0393.5783.5763.61410282725442753624642
Percentage of AvailableForSaleSecuritiesDebtSecurities15.438.628.229.845.956.846.240.949.335.750.652.143.654.1

us-gaap:BusinessCombinationContingentConsiderationLiability

us-gaap:BusinessCombinationContingentConsiderationLiability


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value748000.0748000.0748000.01748000.01000000.01000000.01000000.05017000.05502000.05464000.05426000.05388000.05487000.05449000.05410000.09282000.04674000.07293000.07234000.04560000.04521000.04484000.04445000.04407000.04369000.04291000.04219000.04139000.04068000.05087000.0
Percentage of BusinessCombinationContingentConsiderationLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:BusinessAcquisition

ntct:Gigavation


Business
Period End2020-12-312020-09-302020-06-302020-03-312020-02-05
Value700000.0700000.0700000.0700000.0800000.0
Percentage of BusinessCombinationContingentConsiderationLiability93.693.693.640.00.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel3


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value748000.0748000.0748000.01748000.01000000.01000000.01000000.05017000.05502000.05464000.05426000.05388000.05487000.05449000.05410000.09282000.04674000.07293000.07234000.04560000.04521000.04484000.04445000.04407000.04369000.04291000.04219000.04139000.04068000.05087000.0
Percentage of BusinessCombinationContingentConsiderationLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:StatementScenario, us-gaap:BusinessAcquisition

srt:ScenarioForecast, ntct:Gigavation


Business
Period End2021-02-28
Value700000.0
Percentage of BusinessCombinationContingentConsiderationLiability0.0

us-gaap:CapitalizedContractCostNet

us-gaap:CapitalizedContractCostNet


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-04-01
Value7300000.07400000.07500000.07500000.07700000.07200000.06800000.06200000.06700000.06400000.05900000.05600000.06100000.07100000.0
Percentage of CapitalizedContractCostNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostNet us-gaap:BalanceSheetLocation

us-gaap:OtherAssets


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3300000.03300000.03300000.03000000.03300000.03300000.03000000.02600000.02400000.02600000.02300000.02000000.02200000.0
Percentage of CapitalizedContractCostNet45.244.644.040.042.945.844.141.935.840.639.035.736.1

us-gaap:PrepaidExpensesAndOtherCurrentAssets


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4000000.04100000.04200000.04500000.04400000.03900000.03800000.03600000.04300000.03800000.03600000.03600000.03900000.0
Percentage of CapitalizedContractCostNet54.855.456.060.057.154.255.958.164.259.461.064.363.9

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashAndCashEquivalentsFairValueDisclosure


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value487467477415403338287245353409369332353369331251261304244195210210230215941041067888102889410299901601351171021033967
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value48746747741540333828724535340936933235336933125126130424419521021023021594104106788882889410299901601351171021033967
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.080.4100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
Period End2021-06-302021-03-312020-12-312020-09-302019-03-312018-12-312018-09-302018-06-302018-04-01
Value359373354335367345307328361
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1011031029910010410497959484778091
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax

us-gaap:DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-31
Value7000.018000.039000.085000.0168000.069000.065000.057000.017000.0-6000.0-62000.0
Percentage of DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax us-gaap:FinancialInstrument

ntct:ShortTermMarketableSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-31
Value7000.018000.039000.085000.0117000.057000.038000.037000.012000.0-7000.0-62000.0
Percentage of DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax100.0100.0100.0100.069.682.658.564.970.6116.7100.0

us-gaap:DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax us-gaap:FinancialInstrument, us-gaap:InvestmentType

ntct:ShortTermMarketableSecurities, us-gaap:CorporateDebtSecurities


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-03-31
Value1000.010000.015000.010000.09000.09000.06000.00-2000.0
Percentage of DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax5.625.617.66.013.013.810.5-0.03.2

ntct:ShortTermMarketableSecurities, us-gaap:USGovernmentCorporationsAndAgenciesSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-31
Value7000.017000.029000.070000.0107000.048000.029000.031000.012000.0-7000.0-60000.0
Percentage of DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax100.094.474.482.463.769.644.654.470.6116.796.8

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value4039383635343535353633343335353533322931313128281.5891.5871.5861.5841.5821.5811.5781.5751.7471.7571.8181.8731.9331.992.0441.9691.9141.859
Percentage of DeferredCompensationLiabilityClassifiedNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8201000.08096000.06982000.06690000.06491000.06220000.07034000.07006000.07110000.07218000.04776000.05640000.05575000.06685000.0
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDeferredIncome


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value171411128.427139.0548.8736.7525.7436.75
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-31
Value90775658648544
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value1112142127411923262220
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic


Deferred
Period End2021-03-31
Value11
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsDomestic100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign


Deferred
Period End2021-03-31
Value45
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsForeign100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal


Deferred
Period End2021-03-31
Value44
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value2116000.020000.0166000.0418000.0288000.0426000.0808000.0233000.0352000.0264000.0434000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value19149.0436.6255.5025.8243.8383.6282.2841.9941.994
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign


Deferred
Period End2021-03-31
Value7000000.0
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsForeign100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-31
Value6160000.05078000.05960000.05307000.04978000.04842000.00
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value5397000.04534000.05505000.05164000.06418000.04975000.02660000.02125000.01550000.0760000.0522000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value8480000.05060000.04359000.04068000.04883000.06734000.03730000.03954000.05290000.03841000.03475000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value2898000.03216000.05463000.03375000.06240000.07916000.01651000.01006000.01325000.0892000.0648000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value132146164195323354292521138.479
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2021-03-312020-03-312019-03-312018-03-31
Value8848000.08061000.01609000.00
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.00.0

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanBenefitObligation


Defined
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-31
Value3732343330290.0
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.00.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter


Defined
Period End2021-03-31
Value5656000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths


Defined
Period End2021-03-31
Value485000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive


Defined
Period End2021-03-31
Value932000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour


Defined
Period End2021-03-31
Value716000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree


Defined
Period End2021-03-31
Value605000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo


Defined
Period End2021-03-31
Value553000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0

us-gaap:DerivativeAssets

us-gaap:DerivativeAssets


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value18000.057000.0174000.0151000.021000.093000.037000.018000.058000.021000.016000.0122000.0153000.0496000.0420000.0110000.09000.063000.0116000.0191000.09000.034000.097000.015000.016000.0103000.0358000.0368000.0367000.0341000.040000.071000.0293000.0313000.08000.0150000.08000.018000.0144000.0158000.0
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssets us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value18000.057000.0174000.0151000.021000.093000.037000.018000.058000.021000.016000.0122000.0153000.0496000.0420000.0110000.09000.063000.0116000.0191000.09000.034000.097000.015000.016000.0103000.0358000.0368000.040000.071000.0293000.0313000.08000.0150000.08000.018000.0144000.0158000.0
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssetsCurrent us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssetsCurrent

us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForwardContracts


Derivative
Period End2021-06-302021-03-312020-09-30
Value18000.057000.0151000.0
Percentage of DerivativeAssetsCurrent100.0100.0100.0

us-gaap:DerivativeAssetsCurrent us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForwardContracts, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-30
Value18000.057000.0174000.0105000.0
Percentage of DerivativeAssetsCurrent100.0100.00.069.5

us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForwardContracts, us-gaap:Nondesignated


Derivative
Period End2020-09-30
Value46000.0
Percentage of DerivativeAssetsCurrent30.5

us-gaap:DerivativeLiabilities

us-gaap:DerivativeLiabilities


Derivative
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value38000.0191000.020000.049000.011000.035000.051000.068000.0224000.0220000.0381000.040000.063000.018000.017000.0213000.0391000.0175000.093000.0158000.0467000.0416000.0456000.01664000.01223000.0735000.0102000.0139000.0138000.0221000.0303000.0249000.0
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilities us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Derivative
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value38000.0191000.020000.049000.011000.035000.051000.068000.0224000.0220000.0381000.040000.063000.018000.017000.0213000.0391000.0175000.093000.0158000.0467000.0416000.0456000.01664000.01223000.0735000.0102000.0139000.0138000.0221000.0303000.0249000.0
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilitiesCurrent us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLiabilitiesCurrent

ntct:AccruedOtherLiabilities, us-gaap:ForwardContracts


Derivative
Period End2021-06-302021-03-312020-03-31
Value38000.0191000.049000.0
Percentage of DerivativeLiabilitiesCurrent100.0100.0100.0

us-gaap:DerivativeLiabilitiesCurrent us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

ntct:AccruedOtherLiabilities, us-gaap:ForwardContracts, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-03-31
Value38000.0152000.049000.0
Percentage of DerivativeLiabilitiesCurrent100.079.6100.0

ntct:AccruedOtherLiabilities, us-gaap:ForwardContracts, us-gaap:Nondesignated


Derivative
Period End2021-03-31
Value39000.0
Percentage of DerivativeLiabilitiesCurrent20.4

us-gaap:DerivativeNotionalAmount us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeNotionalAmount

us-gaap:ForwardContracts, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-03-31
Value5.048113.4743.5161.722
Percentage of DerivativeNotionalAmount100.0100.0100.0100.0100.0

us-gaap:ForwardContracts, us-gaap:Nondesignated


Derivative
Period End2021-03-312020-09-30
Value6.3736.566
Percentage of DerivativeNotionalAmount57.7186.7

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value5383766153757050415871545546546261778365688210073213639302334322320312922192320171421
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2021-03-312017-03-312016-03-312015-03-31
Value94878549
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0

us-gaap:FIFOInventoryAmount

us-gaap:FIFOInventoryAmount


F
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value2022262627222426262628303234363641405452585863711212101411121110107.5637.4278.3437.4948.0219.4148.9639.5918.925
Percentage of FIFOInventoryAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue


Fair
Period End2020-12-312020-09-302020-06-302020-03-31
Value748000.0748000.0748000.01748000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value61759759757355152850748446244041539237337934531728725722519516313210476494746444341393836343331292725232120
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

ntct:CoreTechnology


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value7.1927.1927.1637.1337.1037.0747.0166.9596.9026.8456.7816.7616.6676.7126.5226.4146.1816.0095.7855.094.8664.6594.3934.1673.933.663.4723.2242.982.7012.3892.0781.7611.4550.8120.6390.4660.306
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization1.21.21.21.21.31.31.41.41.51.61.61.71.81.81.92.02.22.32.62.63.03.54.25.47.97.77.57.26.96.56.05.54.94.22.42.01.61.1

ntct:DistributorRelationshipsAndTechnologyLicenses


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value8.1497.8297.6087.2336.646.3216.1045.8145.5685.2374.884.5715.8025.3893.5174.2833.6033.068
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization1.31.31.31.31.21.21.21.21.21.21.21.21.61.41.01.31.31.2

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312012-09-302012-06-302012-03-31
Value3.2923.2813.273.2553.2333.2023.1523.0832.9052.692.4172.1521.8871.6211.3561.0940.8390.5940.3680.1590.0620.00.0201917
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization0.50.50.50.60.60.60.60.60.60.60.60.50.50.40.40.30.30.20.20.10.00.00.065.265.665.9

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value34733332130529027526124623221820218817217615513912210589745842342517161615141413121111109.6079.0458.492
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization56.355.853.853.352.752.151.550.950.349.548.848.046.446.545.143.842.540.839.638.035.632.132.532.735.835.534.934.534.133.833.433.032.531.731.130.630.931.2

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value2162122082031971911861801741681601531461481401291191109990796955402625252424232221
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization35.035.635.035.435.836.336.737.237.738.238.739.239.239.340.540.941.742.744.246.248.852.652.653.152.953.654.254.955.756.657.861.3

us-gaap:LeaseAgreements


Finite
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value0.50.50.50.50.50.50.50.50.50.52.4152.131.8071.4841.1430.9980.8520.7070.5620.4160.2710.125
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization0.10.10.10.10.10.10.10.10.10.10.60.60.50.50.40.40.40.40.30.30.30.2

us-gaap:NoncompeteAgreements


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.2920.2920.2920.2920.2920.2920.2920.2920.2920.2920.2930.3010.2980.3170.3060.3060.2870.2780.2690.2870.2850.2880.2810.2870.2890.280.3150.3290.320.2950.2640.2320.1970.1670.1420.1110.0830.057
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization0.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.30.40.60.60.70.70.70.70.70.60.50.50.40.40.30.2

us-gaap:OrderOrProductionBacklog


Finite
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1616161616161616161618181818181815129.616.754.3852.028
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization2.82.93.03.13.23.43.53.73.94.24.94.95.35.86.37.06.76.45.95.14.22.6

us-gaap:OtherIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.9670.9630.9570.9530.9480.9430.9380.9320.9270.9230.9180.9130.9070.9030.8980.8920.8870.880.8610.8280.790.7370.6870.6460.6010.5620.5250.4870.450.410.3710.3410.3130.2750.2350.1730.1440.095
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.40.40.50.60.70.81.21.21.11.11.01.00.90.90.90.80.70.60.50.3

us-gaap:TrademarksAndTradeNames


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value333130282726242322201918171816151312108.8147.1565.5113.5781.655
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization5.45.35.15.05.05.04.94.84.84.74.64.64.74.84.84.84.84.74.64.54.44.23.42.2

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2021-03-31
Value209
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value66717171
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear


Finite
Period End2021-06-302020-12-312020-09-30
Value552040
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2021-03-31
Value44
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value46484848
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value51555555
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value58636463
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsGross


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value111210911113110611011091109110901092109010901094111011921186118711741170116611741169116811611160797980808181808079809887818181727268
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

ntct:CoreTechnology


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value7.1927.1927.1937.1927.1927.1927.1927.1927.1927.1927.27.2527.2287.3457.2717.287.1647.1087.0527.1637.1527.1697.1297.1627.1777.1187.3317.4217.5417.5727.5537.5287.4677.4464.7444.6984.6424.76
Percentage of FiniteLivedIntangibleAssetsGross0.60.70.60.60.70.70.70.70.70.70.70.70.70.60.60.60.60.60.60.60.60.60.60.69.09.09.19.29.39.39.39.49.39.34.85.45.75.8

ntct:DistributorRelationshipsAndTechnologyLicenses


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value11111111116.7856.8436.8276.8556.8826.8826.9318.9099.0196.9498.9618.3438.29
Percentage of FiniteLivedIntangibleAssetsGross1.01.11.01.01.00.60.60.60.60.60.60.60.80.80.60.80.70.7

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312012-09-302012-06-302012-03-31
Value3.3173.3173.3173.3173.3173.3173.3173.3173.3173.3173.3153.1833.1833.1833.1833.1573.0923.0472.9712.8561.9151.6251.149282424
Percentage of FiniteLivedIntangibleAssetsGross0.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.20.20.10.132.730.430.4

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value7777757797757717677707697717727737757848458418418348318288348338348328323838383838383838383838323232
Percentage of FiniteLivedIntangibleAssetsGross69.971.170.070.070.070.370.670.670.670.970.970.970.670.970.970.971.171.171.171.171.371.471.771.748.448.648.147.947.747.647.948.348.448.439.237.440.040.0

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value2522522532512502492452452462422422432432592602582542542532542532532522523130313131313130
Percentage of FiniteLivedIntangibleAssetsGross22.723.122.722.722.822.922.522.522.522.222.222.222.021.822.021.821.721.721.721.721.621.721.821.838.938.939.039.139.239.239.038.5

us-gaap:LeaseAgreements


Finite
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value0.50.50.50.50.50.50.50.50.50.52.62.62.62.62.62.62.62.62.62.62.62.6
Percentage of FiniteLivedIntangibleAssetsGross0.00.00.00.00.00.00.00.00.00.00.20.20.20.20.20.20.20.20.20.20.20.2

us-gaap:NoncompeteAgreements


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.2920.2920.2920.2920.2920.2920.2920.2920.2920.2920.2930.3010.2980.3170.3060.3060.2870.2780.2690.2870.2850.2880.2810.2870.2890.280.3150.3290.350.3550.3520.3480.3380.3340.3410.3320.3240.343
Percentage of FiniteLivedIntangibleAssetsGross0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.40.40.40.40.40.40.40.40.40.40.30.40.40.4

us-gaap:OrderOrProductionBacklog


Finite
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value16161616161616161616181818181818181818181818
Percentage of FiniteLivedIntangibleAssetsGross1.51.51.51.51.51.51.51.51.51.51.71.61.61.61.61.51.51.61.61.61.61.6

us-gaap:OtherIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value1.2081.2081.2081.2081.2081.2081.2081.2081.2081.2081.2081.2081.2081.2471.2081.2081.2081.2081.2061.2041.2041.1911.0931.0951.0310.9430.9010.8610.840.7690.6960.6370.5950.4830.3970.3440.2750.2
Percentage of FiniteLivedIntangibleAssetsGross0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.11.31.21.11.11.00.90.90.80.70.60.40.40.30.2

us-gaap:TrademarksAndTradeNames


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value583939393939393939393939404444444343434343434343
Percentage of FiniteLivedIntangibleAssetsGross5.23.63.63.63.63.63.63.63.63.63.63.63.63.73.73.73.73.73.73.73.83.83.83.8

us-gaap:InventoryRawMaterials

us-gaap:InventoryRawMaterials


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1513151618151416181416182120232021222419201816187.2416.1343.2578.3126.3466.0256.9596.6656.0343.9861.4863.923.2184.0834.9644.9955.0914.548
Percentage of InventoryRawMaterials100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcess

us-gaap:InventoryWorkInProcess


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value148000.016000.046000.0125000.0222000.0819000.0121000.0274000.0410000.01181000.0989000.0717000.0182000.02589000.0484000.0425000.0294000.0998000.01628000.01489000.01315000.0651000.0661000.01551000.0266000.017000.0127000.0125000.0367000.0161000.0246000.0251000.0222000.0272000.01983000.099000.0311000.0363000.0473000.0480000.077000.027000.0
Percentage of InventoryWorkInProcess100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value12141414
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-06-302020-12-312020-09-30
Value102.5226.141
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:LiabilitiesFairValueDisclosure


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value0.0380.1910.7480.7480.7681.7971.0111.0351.0510.0680.2245.2375.8835.5045.4895.4065.5045.6625.8019.4574.7677.4517.7014.9764.9776.1485.6685.1424.4714.4794.4554.5084.5685.5826.1197.0757.8959.079100.4120.0230.092
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Liabilities
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value0.0380.1910.020.0490.0110.0350.0510.0680.2240.220.3810.040.0630.0180.0170.2130.3910.1750.0930.1580.4670.4160.4561.6641.2230.7350.1020.1390.1380.2210.3030.2490.0680.0220.2870.1660.540.4120.0230.092
Percentage of LiabilitiesFairValueDisclosure100.0100.02.62.71.13.44.9100.0100.04.26.50.71.10.30.33.86.71.92.02.16.18.49.227.121.614.32.33.13.14.96.64.51.10.33.61.85.3100.0100.0100.0

us-gaap:FairValueInputsLevel3


Liabilities
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value0.7480.7480.7481.7481.01.01.00.00.05.0175.5025.4645.4265.3885.4875.4495.419.2824.6747.2937.2344.564.5214.4844.4454.4074.3694.344.3174.2874.2655.3336.0517.0537.6088.9139.60.00.00.0
Percentage of LiabilitiesFairValueDisclosure100.0100.097.497.398.996.695.10.00.095.893.599.398.999.799.796.293.398.198.097.993.991.690.872.978.485.797.796.996.995.193.495.598.999.796.498.294.70.00.00.0

us-gaap:LineOfCredit us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:LineOfCredit

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Line
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-02-01
Value350350450450450450450500550600600600600300
Percentage of LineOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Line
Period End2021-06-302021-03-31
Value345336
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value4.14.14.14.10.0410.041
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0

us-gaap:OtherInventoryCapitalizedCosts

us-gaap:OtherInventoryCapitalizedCosts


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1311000.03440000.04966000.03774000.01986000.0721000.05403000.04123000.01016000.02919000.04704000.04384000.03436000.02825000.0
Percentage of OtherInventoryCapitalizedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidTaxes

us-gaap:PrepaidTaxes


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value111.9069.5668.99812131413191823252822234848401834281837400.01.3932.8646.7421.2071.0121.920.08.9178.2824.9394.64.4133.5635.3763.205
Percentage of PrepaidTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PurchaseObligation

us-gaap:PurchaseObligation


Purchase
Period End2021-03-31
Value55
Percentage of PurchaseObligation100.0

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:RestrictedCashAndCashEquivalents


Restricted
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-03-31
Value748000.0748000.0748000.01748000.01000000.01000000.01189000.0188000.0187000.0187000.0910000.0910000.0910000.0909000.0846000.0846000.0846000.0846000.0186000.0186000.0186000.0
Percentage of RestrictedCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value258269251236249270261234246272260230248
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligationPercentage

us-gaap:RevenueRemainingPerformanceObligationPercentage


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value72.072.071.070.00.710.720.710.710.720.740.750.750.76
Percentage of RevenueRemainingPerformanceObligationPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue


Share
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-31
Value28.1428.6830.8431.7730.2435.3230.1820.9517.8513.3312.359.96
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased us-gaap:SubsidiarySaleOfStock

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased

us-gaap:EmployeeStock


Share
Period End2021-03-312020-12-312020-09-30
Value25.6923.1423.14
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased100.0100.0100.0

us-gaap:TaxCreditCarryforwardAmount

us-gaap:TaxCreditCarryforwardAmount


Tax
Period End2021-03-31
Value15
Percentage of TaxCreditCarryforwardAmount100.0

us-gaap:UnamortizedDebtIssuanceExpense us-gaap:BalanceSheetLocation, us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:OtherNoncurrentAssets, us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Unamortized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1000000.01400000.01900000.02300000.02700000.03200000.03600000.04000000.04400000.04900000.05300000.05700000.06200000.06600000.02000000.02400000.02700000.03000000.03400000.03700000.04100000.04400000.04700000.05100000.0
Percentage of UnamortizedDebtIssuanceExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Unamortized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1700000.01700000.01700000.01700000.01700000.01700000.01700000.01700000.01800000.01700000.01700000.01800000.01700000.01700000.01400000.01300000.01400000.01400000.01300000.01400000.01300000.01400000.01400000.01300000.0
Percentage of UnamortizedDebtIssuanceExpense170.0121.489.573.963.053.147.242.540.934.732.131.627.425.870.054.251.946.738.237.831.731.829.825.5

us-gaap:UnamortizedDebtIssuanceExpense us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Unamortized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-07-14
Value2700000.03100000.03600000.04000000.04400000.04900000.05300000.05700000.06200000.06600000.07000000.07500000.07900000.08300000.03400000.03700000.04100000.04400000.04700000.05100000.05400000.05800000.06100000.06400000.06600000.0
Percentage of UnamortizedDebtIssuanceExpense270.0221.4189.5173.9163.0153.1147.2142.5140.9134.7132.1131.6127.4125.8170.0154.2151.9146.7138.2137.8131.7131.8129.8125.50.0

us-gaap:ValuationAllowancesAndReservesBalance us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:AllowanceForCreditLoss


Valuation
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-31
Value0.4161.351.5831.9912.0665.069
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowanceOfDeferredTaxAssets


Valuation
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value115.6410.8353.1083.3743.7773.9064.9413.7953.5290.2490.2490.249
Percentage of ValuationAllowancesAndReservesBalance2741.8417.952.7156.1163.374.50.00.00.00.00.00.00.0

us-gaap:ValueAddedTaxReceivable us-gaap:StatementScenario

us-gaap:ValueAddedTaxReceivable

srt:ProForma


Value
Period End2020-09-30
Value6300000.0
Percentage of ValueAddedTaxReceivable100.0

Line plots across dimensions of each concept


Cost Ratio
us-gaap:ProductOrService
(None,)
Cost  Ratious-gaap: Product Or Service
TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation
(None,)
Allocated Share Based Compensation Expenseus-gaap: Income Statement Location
us-gaap:CostOfRevenue
us-gaap:ProductOrService
(None,)
Cost Of Revenueus-gaap: Product Or Service
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Geographical
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:AmortizationOfIntangibleAssets
us-gaap:IncomeStatementLocation
(None,)
Amortization Of Intangible Assetsus-gaap: Income Statement Location
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components