FEYE


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

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:SharesIssued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfGoodsAndServicesSold
us-gaap:ProductOrService

us-gaap:CostOfRevenue

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaid

us-gaap:InterestExpense
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:InterestExpenseDebt

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:OperatingExpenses

us-gaap:OperatingIncomeLoss

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ResearchAndDevelopmentExpense

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

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:ShortTermInvestments
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation, us-gaap:FinancialInstrument

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical

us-gaap:Goodwill
us-gaap:BusinessAcquisition

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:AccountsPayableCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent
us-gaap:ProductOrService

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongTermDebt

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:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

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:StatementClassOfStock
us-gaap:Dividends

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:ProceedsFromSaleOfShortTermInvestments
us-gaap:StatementEquityComponents
feye:AdjustmentsToAdditionalPaidInCapitalAccretionOfTemporaryEquity
us-gaap:StatementEquityComponents
feye:AdjustmentsToAdditionalPaidInCapitalDividendsFromTemporaryEquity
us-gaap:BusinessAcquisition
feye:BusinessCombinationConsiderationTransferredEquityInterestsForPrecombinationServices

feye:ContractWithCustomerLiabilityIncreaseFromCashReceipts

feye:RestructuringChargesCashCharges

feye:RestructuringChargesCashChargesOtherAdjustments

feye:RestructuringChargesCashChargesProvisionForRestructuring

feye:RestructuringChargesExcludingNoncashCharges
us-gaap:RestructuringCostAndReserve

feye:RestructuringChargesReductionInSeveranceBenefits
us-gaap:StatementClassOfStock
feye:TemporaryEquityIssuanceCosts
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:AmortizationOfFinancingCostsAndDiscounts
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalizedComputerSoftwareAdditions

us-gaap:CapitalizedComputerSoftwareAmortization1
us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskPercentage1

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateDuringPeriod

us-gaap:Depreciation

us-gaap:GoodwillPurchaseAccountingAdjustments

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:InterestExpenseDebtExcludingAmortization

us-gaap:InterestIncomeOther

us-gaap:LeaseCost

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherNoncashIncomeExpense

us-gaap:PaidInKindInterest

us-gaap:PaymentsForRestructuring
us-gaap:RestructuringCostAndReserve

us-gaap:PaymentsOfStockIssuanceCosts

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireShortTermInvestments

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments

us-gaap:ProceedsFromOtherDeposits

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockPlans

us-gaap:RestructuringAndRelatedCostNumberOfPositionsEliminatedPeriodPercent

us-gaap:RestructuringCharges

us-gaap:RestructuringCostsAndAssetImpairmentCharges

us-gaap:RestructuringReserveTranslationAndOtherAdjustment
us-gaap:RestructuringCostAndReserve

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock
us-gaap:SaleOfStockConsiderationReceivedOnTransaction
us-gaap:SubsidiarySaleOfStock

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:Range, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:ShortTermLeaseCost

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:SubleaseIncome

us-gaap:TemporaryEquityAccretionOfDividends
us-gaap:StatementClassOfStock

us-gaap:TemporaryEquityAccretionToRedemptionValue
us-gaap:StatementClassOfStock

us-gaap:TemporaryEquityAccretionToRedemptionValueAdjustment

us-gaap:TemporaryEquityDividendsAdjustment
us-gaap:BusinessAcquisition
feye:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTangibleAssetsNet

feye:CashCashEquivalentsAndAvailableForSaleDebtSecuritiesAmortizedCost

feye:DeferredTaxAssetLeaseLiability

feye:DeferredTaxLiabilitiesCapitalizedContractCost

feye:DepositsAndOtherAssetsNoncurrent

feye:FiniteLivedIntangibleAssetExpectedAmortizationYearFourAndThereafter
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:MeasurementInputType
feye:FiniteLivedIntangibleAssetsMeasurementInput

feye:LesseeOperatingLeaseLeaseNotYetCommencedLiability

feye:LettersOfCreditAmountAvailable

feye:RevenueContractWithCustomerLiabilityRemainingPerformanceObligationPercentage

feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueExpectedToVestOnPerformanceOutstanding

feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestOnPerformanceOutstandingNumber

feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestOnPerformanceWeightedAverageGrantDateFairValue
us-gaap:PlanName
feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumPercentageOfFairValueForExercisePrice

feye:ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueExpectedToVestOnPerformanceOutstanding
us-gaap:PlanName
feye:ShareBasedCompensationArrangementBySharebasedPaymentAwardMinimumPercentageOfFairValueForExercisePrice
us-gaap:StatementClassOfStock
feye:TemporaryEquityAccretionToRedemptionValueRecognized
us-gaap:StatementClassOfStock
feye:TemporaryEquityNetDebtThreshold

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

us-gaap:CapitalizedContractCostNet
us-gaap:BalanceSheetLocation, us-gaap:CapitalizedContractCost

us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:CashAndCashEquivalents
us-gaap:CashAndCashEquivalents, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance
us-gaap:AwardType
us-gaap:DebtInstrument
us-gaap:PlanName
us-gaap:StatementClassOfStock

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiabilityNoncurrent
us-gaap:ProductOrService
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType
us-gaap:ConvertibleDebtFairValueDisclosures

us-gaap:ConvertibleLongTermNotesPayable
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentRepurchasedFaceAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsGoodwillAndIntangibleAssets

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxLiabilitiesDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxLiabilitiesFinancingArrangements

us-gaap:DeferredTaxLiabilitiesLeasingArrangements
us-gaap:StatementClassOfStock
us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestments

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

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:IncomeTaxExaminationPenaltiesAndInterestAccrued

us-gaap:InventoryValuationReserves
us-gaap:FinancialInstrument
us-gaap:InvestmentsFairValueDisclosure

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards

us-gaap:PurchaseObligation
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligationPercentage

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforwardAmount

us-gaap:TemporaryEquityCarryingAmountAttributableToParent
us-gaap:StatementClassOfStock

us-gaap:TemporaryEquitySharesIssued
us-gaap:StatementClassOfStock

us-gaap:TemporaryEquitySharesOutstanding

us-gaap:TreasuryStockShares

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Comprehensive Income Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Inventory Net
Current Assets
Inventory Net
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Accounts Payable Current
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
Shares
Treasury Stock Shares
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Remainder Of Fiscal Year
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net

Tables

  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:CommonStockValue ██▄▁▁▁0.0240.0240.0230.0220.0220.022NANA0.020.020.020.020.0190.019NA0.0180.018
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStockNA235.69NANANA219.422NANANA199.612NANANA187.105NANANA
us-gaap:CommonStockSharesIssued █▇▃▃▂▁238.44235.69225.375225.375222.766219.422NANA203.167199.612196.934194.987191.905187.105NA182.041177.843
us-gaap:CommonStockSharesOutstanding █▇▃▃▂▁238.44235.69225.375225.375222.766219.422NANA203.167199.612196.934194.987191.905187.105NA182.041177.843
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 234.74NANANA217.789NANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 234.74NANANA217.789NANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted NANA224.807221.352217.789NA212.207204.109197.819NA192.359189.696186.456NA179.732176.645172.236
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities feye:UnvestedRestrictedStockAwardsAndRestrictedStockUnits28.418NANANA24.899NANANA25.601NANANA25.105NANANA24.983
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:ConvertibleDebtSecurities33.856NANANA35.442NANANA35.442NANANA15.141NANANA15.141
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:ConvertiblePreferredStock23.511NANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStock0.669NANANA0.966NANANA0.601NANANA0.639NANANA0.784
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:StockOption3.153NANANA3.964NANANA3.183NANANA3.92NANANA7.019
us-gaap:EarningsPerShareBasic -0.24NANANA-0.35NANANANANANANANANANANANA
us-gaap:EarningsPerShareDiluted -0.24NANANA-0.35NANANANANANANANANANANANA
us-gaap:EarningsPerShareBasicAndDiluted NA-0.18999999999999995-0.17-0.24-0.35-0.21999999999999997-0.31-0.33-0.38-0.24-0.26-0.38-0.39-0.49-0.39-0.4-0.48
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
 COGS Ratio us-gaap:ProductOrService feye:ProfessionalServices█▇▆▅▅▅▄▃▃▂▂▁▁▁▁▁63.33157.78154.62452.59550.63950.07846.09143.50640.64138.70635.99835.26733.59734.83634.19233.625NA
 COGS Ratio us-gaap:ProductOrService feye:SubscriptionSupportandServices▇█▇▅▅▇▆▅▄▆▅▃▃▄▂▁183.017189.721183.836177.305174.083185.008179.823174.102169.903178.827175.653167.429165.473170.965163.174158.097NA
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AllocatedShareBasedCompensationExpense █▆▄▂▂▂▂▄▄▁▂▃▆▅▆▄▇45.76742.51440.36937.04636.17836.35536.68840.15140.32335.30937.32638.89242.14840.84242.20839.39743.889
us-gaap:ComprehensiveIncomeNetOfTax ▆██▇▃▇▄▄▃▇▇▄▃▁▄▄▂-52.439-39.883-40.315-45.296-79.155-49.113-65.388-66.151-73.278-48.151-49.087-71.878-73.425-90.588-69.035-70.706-82.665
us-gaap:CostOfGoodsAndServicesSold ▇█▇▆▆▆▆▅▃▃▂▂▂▂▂▂▁84.5787.04384.40680.99381.58680.71179.2277.39371.56869.8367.43467.28267.92969.0469.06667.79464.605
us-gaap:CostOfRevenue ▇█▇▆▆▆▆▅▃▃▂▂▂▂▂▂▁84.5787.04384.40680.99381.58680.71179.2277.39371.56869.8367.43467.28267.92966.2869.06666.69264.605
us-gaap:GeneralAndAdministrativeExpense ▂▂▁▂▃▃▃▃▃▂▂▂▃█▄▃▃26.48925.64623.09625.28127.42928.86227.71727.92627.37624.93526.24126.17928.41840.35429.82327.83327.615
us-gaap:GrossProfit ██▇▆▆▇▆▅▅▆▆▄▄▁▄▂▁161.778160.459154.054148.907143.136154.375146.694140.215138.976147.703144.217135.414131.141110.959128.3118.78109.133
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▆██▆▃▇▄▄▃▇▇▃▃▁▄▄▂-49.141-38.661-38.185-52.182-75.381-46.788-64.955-66.783-73.193-47.017-48.357-71.448-70.777-87.674-68.087-69.767-81.695
us-gaap:IncomeTaxExpenseBenefit ▅▁▄▄▄█▃▃▇▅▆▅▄▅▄▄▅1.503-0.0580.9331.0940.9252.4280.540.542.1821.4241.71.41.0531.2471.10.9651.293
us-gaap:IncomeTaxesPaid ▇▄█▁▁▂▃▃▄▃▃▅▁▅▇▁▁2.1581.3912.5120.7220.7270.7961.2991.2831.3991.2811.2161.6370.6461.682.2360.7170.727
us-gaap:InterestExpense ▆▅▅▇██▇▇▇▇▆▄▂▂▂▁▁14.62414.51114.35315.35615.84615.70315.55415.40715.26315.12814.97613.60512.71712.52512.61112.38512.245
 us-gaap:InterestExpenseDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType feye:ConvertibleSeniorNotesDue2024,us-gaap:ConvertibleNotesPayable7.584NANANA7.283NANANANANANANANANANANANA
 us-gaap:InterestExpenseDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType feye:ConvertibleSeniorNotesdue2024,us-gaap:ConvertibleNotesPayableNA7.5077.4327.3577.2838.0027.1387.0676.9976.9286.8592.779NANANANANA
 us-gaap:InterestExpenseDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType feye:SeriesAConvertibleSeniorNotes,us-gaap:ConvertibleNotesPayable▅▅▅▅▆▁▆▆▆▆▆▇█████0.0590.0590.0591.2421.818-7.2451.761.761.7421.7231.7054.4886.4076.3396.2736.2086.143
 us-gaap:InterestExpenseDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType feye:SeriesBConvertibleSeniorNotes,us-gaap:ConvertibleNotesPayable██▇▇▆▆▅▅▄▄▃▃▃▂▂▁▁6.9826.9226.8636.8046.7466.6896.6326.5766.5216.4666.4126.3386.3066.2556.2036.1526.101
us-gaap:InterestPaidNet NA6.4790.0NANA6.9720.06.9620.07.064NANA0.06.037NANANA
us-gaap:NetIncomeLoss ▆██▆▃▇▄▄▃▇▆▃▃▁▄▄▂-50.644-38.603-39.118-53.276-76.306-49.216-65.495-67.323-75.375-48.397-50.037-72.859-71.83-88.921-69.214-70.732-82.988
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▆██▅▁-50.644-38.603-39.118-53.276-76.306NANANA-75.375NANANA-71.83NANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic -55.238NANANA-76.306NANANANANANANANANANANANA
us-gaap:OperatingExpenses ▆▃▂▄█▄▇▆▇▃▂▂▄▄▃▁▂198.51186.938180.207188.477206.106189.46201.41196.958202.466184.404180.658183.95191.865188.641186.244178.21180.847
us-gaap:OperatingIncomeLoss ▇██▆▃▇▄▄▃▇▇▅▃▁▄▃▂-36.732-26.479-26.153-39.57-62.97-35.085-54.716-56.743-63.49-36.701-36.441-48.536-60.724-77.682-57.944-59.43-71.714
us-gaap:OtherNonoperatingIncomeExpense ████▇▇█▇█▇▇▁█████0.5710.4540.157-0.119-0.989-0.7570.04-0.77-0.288-0.414-1.424-12.69-0.276-0.1220.0-0.120.232
us-gaap:ResearchAndDevelopmentExpense █▃▃▂▆▆▆▆▅▃▃▄▅▂▄▂▁72.4263.00961.66260.59667.50367.53668.85767.53867.39562.25162.1263.57566.19659.85864.31660.74758.352
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ██▇▆▅▇▆▅▄▅▄▃▃▃▂▂▁246.348247.502238.46229.9224.722235.086225.914217.608210.544217.533211.651202.696199.07205.801197.366191.722184.759
us-gaap:SellingAndMarketingExpense ▆▅▄▂▆▃▅▇█▅▃▄▅▁▃▂▄99.60196.79693.96190.042100.293.07798.355101.494103.89697.21892.29794.19697.25188.42992.10589.6394.88
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:Assets ▇█▁▁▂▄3184.9443245.8822704.5222681.4332796.3862890.486NANA2707.5422696.0782636.9152614.4742426.3852332.081NA2285.5432295.995
us-gaap:Liabilities ▃▅▂▁▆█2064.2512111.9282041.3622021.0742142.7782188.82NANA2088.1012045.6841986.0531954.0461806.9511587.265NA1493.1591489.348
us-gaap:LiabilitiesAndStockholdersEquity ▇█▁▁▂▄3184.9443245.8822704.5222681.4332796.3862890.486NANA2707.5422696.0782636.9152614.4742426.3852332.081NA2285.5432295.995
us-gaap:StockholdersEquity ▆▇▃▃▃▆▆▇▁▃▃▃▁█715.131732.904663.16660.359653.608701.666702.91728.77619.441650.394650.862660.428619.434744.816NA792.384806.647
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AssetsCurrent ▇█▂▁▂▄1518.3331562.2441178.6171134.141225.6431313.736NANA1344.7121381.181321.0771295.6141099.0991077.138NA1023.71017.384
us-gaap:CashAndCashEquivalentsAtCarryingValue ▅█▂▃▁▂516.972676.454314.25404.346283.866334.603NANA406.057409.829397.297351.37167.85180.891160.807154.442163.374
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▅█▂▃▁▂▁▂▃▃516.972676.454314.25404.346283.866334.603297.16331.901406.057409.829NANANA180.891NANANA
us-gaap:ShortTermInvestments █▄▄▁▆▆783.689624.824627.892509.858696.104704.955NANA723.972706.691691.004723.975718.536715.911NA716.393711.637
us-gaap:AccountsReceivableNetCurrent ▁▆▄▂▄█109.213153.575133.897119.842140.191171.459NANA111.071157.817129.163120.893103.056140.049NA109.971105.9
us-gaap:InventoryNet ▄▁▄▄█▅5.4324.0235.3715.447.1585.892NANA6.6356.5486.0676.7446.8065.746NA5.8376.195
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ██▃▁▄▃103.027103.36897.20794.65498.32496.827NANA96.977100.29597.54692.632102.85134.541NA37.05730.278
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:PropertyPlantAndEquipmentGross █▅▄▃▂▁308.451298.787294.447290.132285.542283.383NANA259.035248.192248.929235.754223.203229.001NA219.5210.765
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █▆▅▃▂▁228.901219.017210.45202.727194.929189.571NANA167.137159.029162.678154.381146.624157.644NA159.378149.951
us-gaap:AmortizationOfIntangibleAssets ▂▂▁▁▃▇▇▅▃▄▄▄▄████11.811.711.011.212.014.514.313.012.112.412.612.712.614.914.814.814.8
us-gaap:PropertyPlantAndEquipmentNet ▁▁▃▅▆█79.5579.7783.99787.40590.61393.812NANA91.89889.16386.25181.37376.57971.357NA60.12260.814
us-gaap:Goodwill ██▁▁▁▁1364.8371364.8861213.4541213.4541213.4541205.292NANA999.804999.804999.888999.888999.92984.661NA978.26978.26
us-gaap:IntangibleAssetsNetExcludingGoodwill ▃▆▁▄▆█114.222126.067105.856116.864128.11134.42NANA131.036143.162155.583168.229180.875187.388NA214.458229.245
us-gaap:FiniteLivedIntangibleAssetsNet ▃▆▁▄▆█114.222126.067105.856116.864128.11134.42NANA131.036143.162155.583168.229180.875187.388NA214.458229.245
us-gaap:DeferredTaxAssetsLiabilitiesNet NA2.949NANANA2.111NANANA2.696NANANA2.387NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▁▁▆▇██39.23838.25151.60454.57258.04558.758NANA59.1080.0NANANANANANANA
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AccountsPayableCurrent ▄▁▁▃██13.0765.1076.09510.73326.28826.271NANA31.11326.94431.93832.30830.74935.684NA27.9125.487
us-gaap:AccruedLiabilitiesCurrent █▆▃▁▇█24.80423.23921.33319.72623.79424.496NANA26.49729.79727.98220.51223.81719.569NA20.38722.067
us-gaap:ContractWithCustomerLiabilityCurrent ▄█▂▁▂▇587.933613.709567.201563.19572.533603.944NANA541.563556.815528.752525.617533.54546.615NANANA
us-gaap:LiabilitiesCurrent ▂▄▂▁▇█709.998753.743699.014683.617818.378849.949NANA670.756677.364652.623636.816642.126557.905NA494.321494.265
us-gaap:OperatingLeaseLiabilityCurrent ▁▄▇▇█▇13.84316.02418.10918.54519.01718.437NANA15.3870.0NANANANANANANA
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType feye:ConvertibleSeniorNotesDue2024,us-gaap:ConvertibleNotesPayable█▁513.522507.25NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType feye:ConvertibleSeniorNotesdue2024,us-gaap:ConvertibleNotesPayableNA507.25501.056494.937488.892482.922NANA465.445459.761454.147448.6NANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType feye:SeriesAConvertibleSeniorNotes,us-gaap:ConvertibleNotesPayable▁▁▁▁██23.43623.43623.43623.436118.805117.288NANA112.85111.408109.985108.58411.495406.238NA395.925390.868
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType feye:SeriesBConvertibleSeniorNotes,us-gaap:ConvertibleNotesPayable█▇▅▄▂▁435.323430.21425.157420.163415.228410.35NANA396.06391.408386.81382.267377.777373.34NA364.621360.338
us-gaap:OtherLiabilitiesNoncurrent ▁█▁▁▁▁4.49812.3394.4044.6544.684.494NANA3.99327.7324.08523.84422.95722.102NA15.4388.32
us-gaap:OperatingLeaseLiabilityNoncurrent ▄▁▆▇▇█54.7142.20261.88264.61168.27770.481NANA74.370.0NANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo ▂▁█12.58412.36315.082NANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▃▁█11.24310.28413.125NANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ▅▁█10.648.86311.796NANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive ▆▁█10.6058.19111.35NANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive ▄▁█20.27214.37126.497NANANANANANANANANANANANANANA
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:StockholdersEquity ▆▇▃▃▃▆▆▇▁▃▃▃▁█715.131732.904663.16660.359653.608701.666702.91728.77619.441650.394650.862660.428619.434744.816NA792.384806.647
us-gaap:CommonStockValue ██▄▁▁▁0.0240.0240.0230.0220.0220.022NANA0.020.020.020.020.0190.019NA0.0180.018
us-gaap:AdditionalPaidInCapital █▇▃▁▂▁3657.913623.2443513.6183470.5033488.4563457.359NANA3194.4843152.1593104.4763064.9552952.0852891.441NA2787.5512731.108
us-gaap:RetainedEarningsAccumulatedDeficit ▁▂▃▄▆█-2864.842-2814.198-2775.595-2736.477-2683.201-2606.895NANA-2424.861-2349.486-2301.089-2251.052-2178.194-1993.763NA-1843.792-1773.06
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▄▆▇█▁▃2.0393.8345.1146.311-1.6691.18NANA-0.202-2.299-2.545-3.495-4.476-2.881NA-1.393-1.419
us-gaap:TreasuryStockValue ▁▁▁▁██80.080.080.080.0150.0150.0NANA150.0150.0150.0150.0150.0150.0NA150.0150.0
 us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents us-gaap:CommonStockIncludingAdditionalPaidInCapital46.961NA41.3438.00437.148NA37.86341.35641.482NANANA42.148NANANANA
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅█▆▅▂▆▅▃▅▆▅▁▄▆▄▃▃20.8671.39433.26714.69-24.45639.51518.498-14.92924.45330.58221.899-44.2879.18733.57512.487-11.47-16.952
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▂▂█▄▄▃▃▄▄▅▄▄▄▄▄▄-172.559-114.928-125.139188.139-20.23-12.871-54.903-72.194-29.068-29.33123.175-17.023-25.338-24.984-11.107-14.508-8.724
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂█▂▁▂▂▂▂▂▂▂▆▂▂▂▂▂-7.783405.7381.776-82.349-6.05110.7991.66412.9670.84311.2810.853244.833.1111.4934.98517.046-34.617
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▁█▂▅▂▄▃▂▃-159.482362.204-90.096120.48-50.73737.443-34.741-74.156-3.772NANANANANANANANA
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▆▂▆▆▇█▃▄█▃▆▆▆▁▅▆▇-0.126-0.929-0.0630.0110.1430.404-0.643-0.4930.475-0.799-0.0710.0-0.06-1.234-0.3040.00.251
us-gaap:DepreciationDepletionAndAmortization █▅▄▄▅▇█▅▄▁▃▃▃▅▆▇▇27.61325.14623.523.49724.24127.06728.13624.26923.83319.81722.08722.21222.38924.80525.83926.40826.365
us-gaap:IncreaseDecreaseInAccountsPayable █▅▄▁▆▆▅▅█▅▅▆▄█▄▆▇8.13-1.639-4.321-14.6881.7172.58-2.288-2.3876.802-1.59-2.4631.202-5.3547.0-4.7530.4623.331
us-gaap:IncreaseDecreaseInAccountsReceivable ▁▇▇▃▃▇█▇▁█▆▇▁█▆▆▄-44.51719.46714.172-20.064-30.25618.03826.93113.619-46.47927.5748.92318.094-42.98624.9066.1614.266-14.584
us-gaap:IncreaseDecreaseInInventories ▅▁▁▃▆▄▄▄▅▆█▆▇▇▇▃▆0.234-1.709-1.591-0.920.935-0.022-0.272-0.1520.3951.071.880.8931.3731.4431.317-0.5171.09
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅█▆▅▂▆▅▃▅▆▅▁▄▆▄▃▃20.8671.39433.26714.69-24.45639.51518.498-14.92924.45330.58221.899-44.2879.18733.57512.487-11.47-16.952
us-gaap:NetIncomeLoss ▆██▆▃▇▄▄▃▇▆▃▃▁▄▄▂-50.644-38.603-39.118-53.276-76.306-49.216-65.495-67.323-75.375-48.397-50.037-72.859-71.83-88.921-69.214-70.732-82.988
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▆██▅▁-50.644-38.603-39.118-53.276-76.306NANANA-75.375NANANA-71.83NANANANA
us-gaap:ShareBasedCompensation █▆▄▂▂▂▂▄▄▁▂▃▆▅▆▄▇45.76742.51440.36937.04636.17836.35536.68840.15140.32335.30937.32638.89242.14840.84442.20639.39743.889
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▂▂█▄▄▃▃▄▄▅▄▄▄▄▄▄-172.559-114.928-125.139188.139-20.23-12.871-54.903-72.194-29.068-29.33123.175-17.023-25.338-24.984-11.107-14.508-8.724
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▄▁▁▂▅▂▄▆▆▆▄▅▆█▃▃▃10.0234.1284.6425.87611.686.9910.37514.73713.50313.81110.37512.15814.48717.8558.6128.8298.483
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂█▂▁▂▂▂▂▂▂▂▆▂▂▂▂▂-7.783405.7381.776-82.349-6.05110.7991.66412.9670.84311.2810.853244.833.1111.4934.98517.046-34.617
 us-gaap:Dividends us-gaap:StatementClassOfStock us-gaap:ConvertiblePreferredStock4.5NANANANANANANANANANANANANANANANA
  2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value24000.024000.023000.022000.022000.022000.020000.020000.020000.020000.019000.019000.018000.018000.017000.017000.017000.016000.016000.016000.016000.015000.015000.014000.014000.02000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Shares Issued

us-gaap:SharesIssued us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonStock


Shares
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value23521919918717416115213722119.761
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value23823522522522221920319919619419118718217717417116916116015915615215014413722
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value23823522522522221920319919619419118718217717417116916116015915615215014413722
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-03-312020-03-31
Value234217
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-03-312020-03-31
Value234217
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0

Weighted Average Number Of Share Outstanding Basic And Diluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted


Weighted
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-03-31
Value2242212172122041971921891861791761721641621581541541511441411333115
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

feye:UnvestedRestrictedStockAwardsAndRestrictedStockUnits


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-31
Value2824252524239.9364.3482.588
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConvertibleDebtSecurities


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-31
Value333535151515
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount119.1142.3138.460.360.663.4

us-gaap:ConvertiblePreferredStock


Antidilutive
Period End2021-03-312014-03-312013-03-31
Value230.074
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount82.70.02867.9

us-gaap:EmployeeStock


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-31
Value0.6690.9660.6010.6390.7840.6670.3120.498
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount2.43.92.32.53.12.83.111.5

us-gaap:StockOption


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-31
Value3.1533.9643.1833.927.01910152618
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount11.115.912.415.628.144.5155.0612.4714.6

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-03-312020-03-31
Value-0.24-0.35
Percentage of EarningsPerShareBasic100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-03-312020-03-31
Value-0.24-0.35
Percentage of EarningsPerShareDiluted100.0100.0

Earnings Per Share Basic And Diluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:EarningsPerShareBasicAndDiluted


Earnings
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value-0.19-0.17-0.24-0.35-0.22-0.31-0.33-0.38-0.24-0.26-0.38-0.39-0.49-0.39-0.4-0.48-0.35-0.75-0.86-0.98-0.87-0.88-0.87-0.88-0.71-0.83-0.82-0.762.75-1.61-1.78
Percentage of EarningsPerShareBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value4542403736363640403537384240423943304657645758564945433825128.8143.252
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.617.216.916.116.115.516.218.519.216.217.619.221.219.821.420.523.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

feye:CostofGoodsServices


Allocated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-03-31
Value5.5625.3295.0154.453.93.3333.2893.6413.7093.3433.4913.4483.902193.5456.8737.4974.7987.7597.6539.6017.6728.2217.1636.3783.433.6053.420.7620.167
Percentage of AllocatedShareBasedCompensationExpense12.212.512.412.010.89.29.09.19.29.59.48.99.348.88.417.417.115.516.713.415.013.314.112.712.87.99.413.68.65.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.22.11.91.71.41.51.71.81.51.61.72.09.71.83.64.10.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:CostofGoodsServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CostOfGoodsProductLine


Allocated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value4.484.3564.2454.0513.7423.4043.593.9643.9473.4463.5523.5583.622-11.0044.7680.5190.5350.2950.5160.6140.6670.3740.560.3860.2680.2640.2430.2360.1450.190.1430.063
Percentage of AllocatedShareBasedCompensationExpense9.810.210.510.910.39.49.89.99.89.89.59.18.6-26.911.31.31.21.01.11.11.00.61.00.70.50.60.60.60.61.51.61.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.81.81.81.71.41.61.81.91.61.71.81.8-5.32.40.30.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CostOfGoodsProductLine0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense


Allocated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value7.0886.7385.9526.9815.5057.9946.8397.437.7036.5547.1257.2457.2947.3277.8217.7297.3175.903111213131212109.8669.296108.3383.911.7751.225
Percentage of AllocatedShareBasedCompensationExpense15.515.814.718.815.222.018.618.519.118.619.118.617.317.918.519.616.719.125.421.720.624.220.823.021.521.821.527.933.131.220.137.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.92.72.53.02.43.43.03.43.73.03.43.63.73.64.04.04.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


Allocated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value1412119.861111010111211111214131414149.878111924161816168.9147.6487.8034.6032.5332.350.957
Percentage of AllocatedShareBasedCompensationExpense32.029.729.326.631.928.729.229.630.831.930.831.934.133.634.135.733.131.924.533.238.129.332.329.332.219.717.720.418.320.226.729.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.95.15.04.35.14.44.75.55.95.25.46.17.26.77.37.37.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ResearchAndDevelopmentExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RestructuringCharges


Allocated
Period End2020-12-312020-09-302016-12-312016-09-302015-12-312015-09-30
Value0.00.0210.0441.1440.00.0
Percentage of AllocatedShareBasedCompensationExpense0.00.10.12.50.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RestructuringCharges0.00.00.00.00.00.0

us-gaap:SellingAndMarketingExpense


Allocated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value131313111111121312101112121011101410131716181819161922158.6884.873.7840.84
Percentage of AllocatedShareBasedCompensationExpense30.631.733.030.831.730.733.432.931.130.331.331.430.826.627.725.931.932.629.930.725.232.631.934.333.043.452.241.634.538.942.925.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.75.45.65.05.14.85.46.16.04.95.56.06.55.35.95.37.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingAndMarketingExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value-52439000.0-39883000.0-40315000.0-45296000.0-79155000.0-49113000.0-65388000.0-66151000.0-73278000.0-48151000.0-49087000.0-71878000.0-73425000.0-90588000.0-69035000.0-70706000.0-82665000.0-62821000.0-124240000.0-138840000.0-153740000.0-137950000.0-135480000.0-134010000.0-133560000.0-105840000.0-120250000.0-116800000.0-101350000.0-2513000.0-50926000.0-26961000.0
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-21.3-16.1-16.9-19.7-35.2-20.9-28.9-30.4-34.8-22.1-23.2-35.5-36.9-44.0-35.0-36.9-44.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value848784808180797771696767676969676463696771636156525344413517136.882
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.335.235.435.236.334.335.135.634.032.131.933.234.133.535.035.435.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService

feye:ProfessionalServices


Cost
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value32312926282624242321202120202020
Percentage of CostOfGoodsAndServicesSold38.636.634.933.334.932.531.531.332.331.330.731.430.230.129.929.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.212.912.411.712.711.211.011.111.010.09.810.410.310.110.510.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ProfessionalServices51.50.054.051.356.20.054.155.656.80.057.560.061.00.060.359.9

feye:SubscriptionSupportandServices


Cost
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value51555454535454534847464647484847
Percentage of CostOfGoodsAndServicesSold61.463.465.166.765.167.568.568.767.768.769.368.669.869.970.170.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.122.323.023.523.623.224.024.423.022.122.122.823.823.524.524.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:SubscriptionSupportandServices28.40.029.930.530.50.030.230.628.50.026.627.628.70.029.730.1

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value848784808180797771696767676669666463696771636156525344413517136.882
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.335.235.435.236.334.335.135.634.032.131.933.234.132.235.034.835.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value262523252728272727242626284029272730323342373634323130312723117.311
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.810.49.711.012.212.312.312.813.011.512.412.914.319.615.114.514.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value16116015414814315414614013814714413513111012811810912011710796121103917389695238402921
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.764.864.664.863.765.764.964.466.067.968.166.865.953.965.062.059.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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 End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value-49141000.0-38661000.0-38185000.0-52182000.0-75381000.0-46788000.0-64955000.0-66783000.0-73193000.0-47017000.0-48357000.0-71448000.0-70777000.0-87674000.0-68087000.0-69767000.0-81695000.0-61793000.0-122140000.0-138980000.0-165930000.0-134600000.0-134890000.0-132650000.0-132990000.0-115670000.0-130350000.0-127170000.0-107250000.0-61490000.0-51843000.0-26748000.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-19.9-15.6-16.0-22.7-33.5-19.9-28.8-30.7-34.8-21.6-22.8-35.2-35.6-42.6-34.5-36.4-44.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value1.503-0.0580.9331.0940.9252.4280.540.542.1821.4241.71.41.0531.2471.10.9651.293-0.2571.2280.338-10.031.550.6360.9270.977-9.944-10.32-10.348-6.042-58.977-0.9170.213
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.6-0.00.40.50.41.00.20.21.00.70.80.70.50.60.60.50.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


Income
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value2158000.01391000.02512000.0722000.0727000.0796000.01299000.01283000.01399000.01281000.01216000.01637000.0646000.01680000.02236000.0717000.0727000.0857000.01415000.01049000.01888000.01294000.0606000.0250000.0536000.0151000.01166000.0391000.0781000.0171000.084000.0
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.61.10.30.30.30.60.60.70.60.60.80.30.81.10.40.40.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value14141415151515151515141312121212121212111111113.8380.00.0090.0060.0040.0070.0060.2430.144
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.95.96.06.77.16.76.97.17.27.07.16.76.46.16.46.56.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense Debt

us-gaap:InterestExpenseDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:InterestExpenseDebt

feye:ConvertibleSeniorNotesDue2024, us-gaap:ConvertibleNotesPayable


Interest
Period End2021-03-312020-03-31
Value7.5847.283
Percentage of InterestExpenseDebt100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.13.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ConvertibleSeniorNotesDue2024 us-gaap:ConvertibleNotesPayable0.00.0

feye:ConvertibleSeniorNotesdue2024, us-gaap:ConvertibleNotesPayable


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value7.5077.4327.3577.2838.0027.1387.0676.9976.9286.8592.779
Percentage of InterestExpenseDebt0.00.00.0100.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.13.23.23.43.23.23.33.23.21.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ConvertibleSeniorNotesdue2024 us-gaap:ConvertibleNotesPayable0.00.00.00.00.00.00.00.00.00.00.0

feye:SeriesAConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Interest
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value0.0590.0590.0591.2421.818-7.2451.761.761.7421.7231.7054.4886.4076.3396.2736.2086.1436.0796.0175.9545.8935.8335.7731.911
Percentage of InterestExpenseDebt0.80.00.00.025.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.50.8-3.10.80.80.80.80.82.23.23.13.23.23.30.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:SeriesAConvertibleSeniorNotes us-gaap:ConvertibleNotesPayable0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

feye:SeriesBConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Interest
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value6.9826.9226.8636.8046.7466.6896.6326.5766.5216.4666.4126.3386.3066.2556.2036.1526.1016.0526.0025.9545.9065.8585.8111.927
Percentage of InterestExpenseDebt92.10.00.00.092.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.82.93.03.02.82.93.03.13.03.03.13.23.03.13.23.30.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:SeriesBConvertibleSeniorNotes us-gaap:ConvertibleNotesPayable0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-31
Value6.4790.06.9720.06.9620.07.0640.06.037
Percentage of InterestPaidNet100.00.0100.00.0100.00.0100.00.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.60.03.00.03.20.03.20.02.9

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value-50.644-38.603-39.118-53.276-76.306-49.216-65.495-67.323-75.375-48.397-50.037-72.859-71.83-88.921-69.214-70.732-82.988-61.536-123.373-139.32-155.9-136.148-135.53-133.573-133.964-105.726-120.031-116.823-101.211-2.513-50.926-26.961
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.6-15.6-16.4-23.2-34.0-20.9-29.0-30.9-35.8-22.2-23.6-35.9-36.1-43.2-35.1-36.9-44.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312018-03-31
Value-50.644-38.603-39.118-53.276-76.306-75.375-71.83
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.6-15.6-16.4-23.2-34.0-35.8-36.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-03-312020-03-31
Value-55238000.0-76306000.0
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.4-34.0

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value1981861801882061892011962021841801831911881861781801692282352522452272192052041991791451017645
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.675.575.682.091.780.689.290.596.284.885.490.896.491.794.493.097.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value-36.732-26.479-26.153-39.57-62.97-35.085-54.716-56.743-63.49-36.701-36.441-48.536-60.724-77.682-57.944-59.43-71.714-49.06-111.346-127.509-156.401-123.501-123.278-128.393-132.488-115.0-129.937-127.021-107.237-61.371-47.395-24.408
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.9-10.7-11.0-17.2-28.0-14.9-24.2-26.1-30.2-16.9-17.2-23.9-30.5-37.7-29.4-31.0-38.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value571000.0454000.0157000.0-119000.0-989000.0-757000.040000.0-770000.0-288000.0-414000.0-1424000.0-12690000.0-276000.0-122000.00-120000.0232000.0-2404000.0-467000.0-1191000.0815000.0-725000.0-985000.0-806000.0-768000.0-918000.0-636000.0-329000.0-54000.0-128000.0-4206000.0-2200000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.1-0.1-0.4-0.30.0-0.4-0.1-0.2-0.7-6.3-0.1-0.10.0-0.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense


Research
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value7263616067676867676262636659646058546276857173686553545341212010
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax29.425.525.926.430.028.730.531.032.028.629.431.433.329.132.631.731.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value246247238229224235225217210217211202199205197191184
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

feye:PlatformCloudSubscriptionAndManagedServices


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value858575736870615651
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.934.431.532.030.430.227.426.024.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.934.431.532.030.430.227.426.024.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:PlatformCloudSubscriptionAndManagedServices100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:ProductandRelatedSubscriptionandSupport


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value97104108103105114117117118128127122121126121119112
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.442.345.645.247.048.552.254.056.359.160.060.460.861.461.862.160.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.442.345.645.247.048.552.254.056.359.160.060.460.861.461.862.160.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ProductandRelatedSubscriptionandSupport100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:ProfessionalServices


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value6357545250504643403835353334343331
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.723.322.922.922.521.320.420.019.317.817.017.416.916.917.317.516.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.723.322.922.922.521.320.420.019.317.817.017.416.916.917.317.516.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ProfessionalServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:SubscriptionSupportandServices


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value183189183177174185179174169178175167165170163158153
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax74.376.777.177.177.578.779.680.080.782.283.082.683.183.182.782.583.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax74.376.777.177.177.578.779.680.080.782.283.082.683.183.182.782.583.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:SubscriptionSupportandServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

feye:PlatformCloudSubscriptionAndManagedServices, country:US


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value53504946423833
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.821.021.720.518.917.716.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.821.021.720.518.917.716.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:PlatformCloudSubscriptionAndManagedServices country:US100.0100.0100.0100.0100.0100.0100.0

feye:PlatformCloudSubscriptionAndManagedServices, feye:OtherGeographicLocation


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value5.0244.0264.2023.4112.7382.8322.732
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.01.71.81.51.21.31.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.01.71.81.51.21.31.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:PlatformCloudSubscriptionAndManagedServices feye:OtherGeographicLocation100.0100.0100.0100.0100.0100.0100.0

feye:PlatformCloudSubscriptionAndManagedServices, srt:AsiaPacific


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value129.9698.6088.7967.4616.5376.387
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.14.23.73.93.33.03.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.14.23.73.93.33.03.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:PlatformCloudSubscriptionAndManagedServices srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0

feye:PlatformCloudSubscriptionAndManagedServices, us-gaap:EMEA


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value141010109.1978.7048.357
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.94.64.74.54.14.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.94.64.74.54.14.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:PlatformCloudSubscriptionAndManagedServices us-gaap:EMEA100.0100.0100.0100.0100.0100.0100.0

feye:ProductandRelatedSubscriptionandSupport, country:US


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value53615859706769787573777571
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.725.825.426.731.230.933.037.037.137.039.139.638.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.725.825.426.731.230.933.037.037.137.039.139.638.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ProductandRelatedSubscriptionandSupport country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:ProductandRelatedSubscriptionandSupport, feye:OtherGeographicLocation


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value3.8114.1664.2584.374.4054.9185.1085.5945.1075.7926.3424.8434.757
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.71.91.91.92.32.42.62.52.93.22.52.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.71.91.91.92.32.42.62.52.93.22.52.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ProductandRelatedSubscriptionandSupport feye:OtherGeographicLocation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:ProductandRelatedSubscriptionandSupport, srt:AsiaPacific


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value192120202121212120191818
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.09.08.99.29.69.810.410.210.39.99.59.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.09.08.99.29.69.810.410.210.39.99.59.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ProductandRelatedSubscriptionandSupport srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:ProductandRelatedSubscriptionandSupport, us-gaap:EMEA


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value20212020212321212121191918
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.29.18.99.29.411.010.410.210.611.09.910.310.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.29.18.99.29.411.010.410.210.611.09.910.310.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ProductandRelatedSubscriptionandSupport us-gaap:EMEA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:ProfessionalServices, country:US


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value43373634302927222222242423
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.615.716.015.413.413.413.210.811.311.312.612.912.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.615.716.015.413.413.413.210.811.311.312.612.912.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ProfessionalServices country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:ProfessionalServices, feye:OtherGeographicLocation


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value5.6425.1995.0854.7333.4143.3123.9014.3274.0283.1862.2871.7632.044
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.22.22.11.51.51.92.02.01.61.20.91.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.22.22.11.51.51.92.02.01.61.20.91.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ProfessionalServices feye:OtherGeographicLocation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:ProfessionalServices, srt:AsiaPacific


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value5.0124.893.7784.0544.7263.9443.3743.8324.0782.4982.4323.911
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.02.11.61.82.11.81.61.82.01.31.22.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.02.11.61.82.11.81.61.82.01.31.22.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ProfessionalServices srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:ProfessionalServices, us-gaap:EMEA


Revenue
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value9.277.0496.8467.287.6757.1345.6255.0154.2755.4484.6363.292.871
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.83.03.03.23.43.32.72.42.12.72.31.71.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.83.03.03.23.43.32.72.42.12.72.31.71.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:ProfessionalServices us-gaap:EMEA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:US


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value150149149145140145143134131134134128125135131129125
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.160.562.663.262.661.863.462.062.461.963.463.363.365.666.867.367.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.160.562.663.262.661.863.462.062.461.963.463.363.365.666.867.367.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:OtherGeographicLocation


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value141713131214101111131211119.769108.3658.328
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.97.05.65.95.66.04.75.15.66.26.05.95.84.75.34.44.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.97.05.65.95.66.04.75.15.66.26.05.95.84.75.34.44.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax feye:OtherGeographicLocation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:AsiaPacific


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value37373632333433313133313027262527
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.215.215.214.314.914.515.014.615.015.414.714.913.912.913.114.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.215.215.214.314.914.515.014.615.015.414.714.913.912.913.114.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EMEA


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4442393838413839353533323434292725
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.917.316.616.616.917.616.918.317.116.515.915.917.116.714.814.113.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.917.316.616.616.917.616.918.317.116.515.915.917.116.714.814.113.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EMEA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling And Marketing Expense

us-gaap:SellingAndMarketingExpense

us-gaap:SellingAndMarketingExpense


Selling
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value9996939010093981011039792949788928994841101211231351171161071181119476564428
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax40.439.139.439.244.639.643.546.649.344.743.646.548.943.046.746.751.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value3184324527042681279628902707269626362614242623322285229523822402241924412435243217061758173517721376125
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value20642111204120212142218820882045198619541806158714931489154115421486139713251250526508442348328119
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets64.865.175.575.476.675.777.175.975.374.774.568.165.364.964.764.261.457.254.451.430.928.925.519.723.895.7

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value3184324527042681279628902707269626362614242623322285229523822402241924412435243217061758173517721376125
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value715732663660653701702728619650650660619744792806841859933104411091182117912501293142310485.39-14.6511.348
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.522.624.524.623.424.30.00.022.924.124.725.325.531.934.735.135.335.838.642.845.648.669.171.174.580.376.24.30.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2.0393.8345.1146.311-1.6691.181.0770.97-0.202-2.299-4.476-2.881-1.742-2.225-0.4410.00.00.0
Percentage of StockholdersEquity0.30.50.81.0-0.30.20.20.1-0.0-0.4-0.7-0.4-0.2-0.2-0.00.00.0-0.0
Percentage of Assets0.10.10.20.2-0.10.00.00.0-0.0-0.1-0.2-0.1-0.1-0.1-0.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value362334573152289126822403191812711095251
Percentage of StockholdersEquity494.4492.7484.7388.2319.0230.1153.4121.32026.9-359.13833.2
Percentage of Assets111.6119.6116.9124.0112.698.4109.192.487.20.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value0.0240.0220.020.0190.0170.0160.0150.0140.0020.0010.001
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.0-0.00.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-31
Value365736233513347034883457340933693194315229522891
Percentage of StockholdersEquity511.5494.4529.8525.6533.7492.7485.1462.4515.7484.7476.6388.2
Percentage of Assets114.9111.6129.9129.4124.7119.60.00.0118.0116.9121.7124.0
Percentage of Assets us-gaap:CommonStockIncludingAdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value-2864.842-2814.198-2775.595-2736.477-2683.201-2606.895-2557.679-2492.184-2424.861-2349.486-2178.193-1993.763-1690.072-1206.507-667.292-223.502-102.867-67.111-50.329
Percentage of StockholdersEquity-400.6-384.0-418.5-414.4-410.5-371.5-363.9-342.0-391.5-361.2-351.6-267.7-200.9-115.5-53.3-21.3-1908.5458.1-3733.6
Percentage of Assets-89.9-86.7-102.6-102.1-96.0-90.20.00.0-89.6-87.1-89.8-85.5-70.9-49.4-37.9-16.2-82.10.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312016-12-312015-12-312014-12-31
Value-80.0-80.0-80.0-80.0-150.0-150.0-150.0-150.0-150.0-150.0-150.0-150.0-150.0-150.00.0
Percentage of StockholdersEquity-11.2-10.9-12.1-12.1-22.9-21.4-21.3-20.6-24.2-23.1-24.2-20.1-17.8-14.40.0
Percentage of Assets-2.5-2.5-3.0-3.0-5.4-5.20.00.0-5.5-5.6-6.2-6.4-6.3-6.10.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value15181562117811341225131313441381132112951099107710231017108710851080138713791363617657617713315104
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets47.748.143.642.343.845.549.751.250.149.645.346.244.844.345.745.244.656.856.656.036.237.435.640.222.983.2

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-312011-12-312010-12-31
Value516676314404283334406409397351167180160154163223223183175402436726136146981714411733277360107.665
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.220.811.615.110.211.615.015.215.113.46.97.80.06.87.19.49.37.60.016.517.929.98.08.35.70.024.912.60.00.048.10.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value516676314404283334297331406409180223
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.220.811.615.110.211.60.00.015.015.27.89.4

Short Term Investments

us-gaap:ShortTermInvestments

us-gaap:ShortTermInvestments


Short
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-31
Value7836246275096967047237066917237187157167117127027327677334632602552991430.0
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets24.619.223.219.024.924.426.726.226.227.729.630.731.331.029.929.230.331.430.119.015.314.517.28.10.0

us-gaap:ShortTermInvestments us-gaap:BalanceSheetLocation

us-gaap:ShortTermInvestments


Short
Period End2020-12-312019-12-31
Value624704
Percentage of ShortTermInvestments100.0100.0
Percentage of Assets19.224.4
Percentage of Assets us-gaap:ShortTermInvestments0.00.0

us-gaap:ShortTermInvestments us-gaap:BalanceSheetLocation, us-gaap:FinancialInstrument

us-gaap:ShortTermInvestments, us-gaap:CertificatesOfDeposit


Short
Period End2020-12-312019-12-31
Value2.7525.145
Percentage of ShortTermInvestments0.40.7
Percentage of Assets0.10.2
Percentage of Assets us-gaap:ShortTermInvestments us-gaap:CertificatesOfDeposit0.00.0

us-gaap:ShortTermInvestments, us-gaap:CommercialPaper


Short
Period End2020-12-31
Value19
Percentage of ShortTermInvestments3.2
Percentage of Assets0.6
Percentage of Assets us-gaap:ShortTermInvestments us-gaap:CommercialPaper0.0

us-gaap:ShortTermInvestments, us-gaap:CorporateDebtSecurities


Short
Period End2020-12-312019-12-31
Value437472
Percentage of ShortTermInvestments70.067.1
Percentage of Assets13.516.4
Percentage of Assets us-gaap:ShortTermInvestments us-gaap:CorporateDebtSecurities0.00.0

us-gaap:ShortTermInvestments, us-gaap:USGovernmentAgenciesDebtSecurities


Short
Period End2020-12-312019-12-31
Value89178
Percentage of ShortTermInvestments14.325.4
Percentage of Assets2.86.2
Percentage of Assets us-gaap:ShortTermInvestments us-gaap:USGovernmentAgenciesDebtSecurities0.00.0

us-gaap:ShortTermInvestments, us-gaap:USTreasurySecurities


Short
Period End2020-12-312019-12-31
Value7448
Percentage of ShortTermInvestments12.06.8
Percentage of Assets2.31.7
Percentage of Assets us-gaap:ShortTermInvestments us-gaap:USTreasurySecurities0.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value109153133119140171111157129120103140109105121124124172140105160193155809530
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.44.75.04.55.05.94.15.94.94.64.26.04.84.65.15.25.17.15.84.39.411.09.04.57.024.1

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value5.4324.0235.3715.447.1585.8926.6356.5486.0676.7446.8065.7465.8376.1955.9557.8079.981131110107.9525.7654.2585.6632.34
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.10.20.20.30.20.20.20.20.30.30.20.30.30.20.30.40.60.50.40.60.50.30.20.41.9

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value10310397949896961009792102343730252729303032272831262310
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.23.23.63.53.53.33.63.73.73.54.21.51.61.31.11.21.21.31.31.31.61.61.81.51.78.6

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value308298294290285283259248248235223229219210201196193176158149142132122907916
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.79.210.910.810.29.89.69.29.49.09.29.89.69.28.58.28.07.26.56.18.37.57.15.15.813.3

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

feye:ComputerEquipmentandSoftware


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value22822021621120620318017116916115214415615114414013512010798928577595712
Percentage of PropertyPlantAndEquipmentGross74.173.973.472.972.371.769.668.967.968.668.363.171.171.871.971.869.968.567.866.064.864.462.965.471.972.9
Percentage of Assets7.26.88.07.97.47.06.76.36.46.26.36.26.86.66.15.95.65.04.44.15.44.84.53.34.29.7
Percentage of Assets feye:ComputerEquipmentandSoftware0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value15151515151514131414131614151413141312121212118.7496.0351.822
Percentage of PropertyPlantAndEquipmentGross5.05.15.25.35.45.55.55.66.06.16.17.36.87.17.27.07.47.67.98.58.69.19.89.67.611.0
Percentage of Assets0.50.50.60.60.60.50.50.50.60.60.60.70.70.70.60.60.60.60.50.50.70.70.70.50.41.5
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value646262626364646264595667484441414341383737343322152.668
Percentage of PropertyPlantAndEquipmentGross20.820.821.221.622.122.624.725.325.925.025.429.521.920.920.721.022.523.624.025.126.326.127.024.519.616.0
Percentage of Assets2.01.92.32.32.32.22.42.32.42.32.32.92.11.91.81.71.81.71.61.52.22.01.91.31.12.1
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MachineryAndEquipment


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value0.4650.4650.4650.4650.4650.4650.4470.4470.4480.4470.4470.4470.4470.4470.4470.4470.4470.4470.4470.4470.4470.4470.4470.4470.7560.019
Percentage of PropertyPlantAndEquipmentGross0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.40.50.90.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.0
Percentage of Assets us-gaap:MachineryAndEquipment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value22821921020219418916715916215414615715914913912912098857561493821153.088
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.26.77.87.67.06.66.25.96.25.96.06.87.06.55.95.45.04.03.53.13.62.82.21.21.12.5

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-312012-12-31
Value11111111121414131212121212141414141616161511111111111111100.60.40.30.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value7979838790939189868176716060616773787374818284696413
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.52.53.13.33.23.23.43.33.33.13.23.12.62.62.62.83.03.23.03.14.74.74.83.94.710.8

us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical

country:US


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302015-12-312015-06-302015-03-312014-12-312013-12-31
Value737377808285838077716660454343485756636654
Percentage of PropertyPlantAndEquipmentNet92.992.492.291.790.890.990.590.190.088.186.884.475.472.069.972.073.476.377.881.284.2
Percentage of Assets2.32.32.93.02.93.03.13.02.92.72.72.62.01.91.82.02.42.33.73.84.0
Percentage of Assets country:US0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NonUs


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302015-12-312015-06-302015-03-312014-12-31
Value5.6356.0716.5627.2268.3158.5258.7258.858.6559.67110111417181820171815
Percentage of PropertyPlantAndEquipmentNet7.17.67.88.39.29.19.59.910.011.913.215.624.628.030.128.026.623.722.218.8
Percentage of Assets0.20.20.20.30.30.30.30.30.30.40.40.50.60.70.80.80.90.71.10.9
Percentage of Assets us-gaap:NonUs0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-312011-12-31
Value1364136412131213121312059999999999999999849789789789789777507507507507507507087061.2740.0
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets42.942.044.945.343.441.736.937.137.938.241.242.242.842.641.140.740.430.730.830.844.042.743.240.051.31.00.0

us-gaap:Goodwill us-gaap:BusinessAcquisition

feye:RespondSoftware


Goodwillus-gaap:
Period End2020-11-30
Value151
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets feye:RespondSoftware0.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value1141261051161281341311431551681801872142292442602762142262382492612732712814.194
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.63.93.94.44.64.74.85.35.96.47.58.09.410.010.210.811.48.89.39.814.614.915.715.320.43.3

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-31
Value114126105116128134131143155168180187214229244260276214226238249261265269279
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.63.93.94.44.64.74.85.35.96.47.58.09.410.010.210.811.48.89.39.814.614.915.315.220.3

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value2949000.02111000.02696000.02387000.01433000.01832000.0479000.0-30563000.00
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.10.10.10.10.10.0-2.20.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-31
Value393851545858590.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.21.21.92.02.12.02.20.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value135.1076.0951026263126313230352725202932433325283430243415
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.20.20.40.90.91.11.01.21.21.31.51.21.10.91.21.31.81.41.01.71.91.71.42.512.5

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value2423211923242629272023192022222927293027262420159.4891.174
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.70.80.70.90.81.01.11.10.81.00.80.91.01.01.21.21.21.21.11.51.41.20.90.70.9

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
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
Value587613567563572603541556528525533546
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.518.921.021.020.520.920.020.720.120.122.023.4

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:ProductOrService

feye:ProductandRelatedSubscriptionandSupport


Contract
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
Value479503478478485508478492476476489496
Percentage of ContractWithCustomerLiabilityCurrent81.582.184.385.084.884.288.388.490.190.791.790.8
Percentage of Assets15.115.517.717.917.417.617.718.318.118.220.221.3
Percentage of Assets feye:ProductandRelatedSubscriptionandSupport0.00.00.00.00.00.00.00.00.00.00.00.0

feye:ProfessionalServices


Contract
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
Value10810988848795636452484450
Percentage of ContractWithCustomerLiabilityCurrent18.517.915.715.015.215.811.711.69.99.38.39.2
Percentage of Assets3.43.43.33.13.13.32.32.42.01.91.82.2
Percentage of Assets feye:ProfessionalServices0.00.00.00.00.00.00.00.00.00.00.00.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value70975369968381884967067765263664255749449453654750845740234833332727721420372
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.323.225.825.529.329.424.825.124.724.426.523.921.621.522.522.821.018.816.514.319.618.616.012.114.857.5

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-31
Value131618181918150.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.40.50.70.70.70.60.60.0

Long Term Debt

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebt

feye:ConvertibleSeniorNotesDue2024, us-gaap:ConvertibleNotesPayable


Long
Period End2021-03-312020-12-31
Value513507
Percentage of LongTermDebt100.0100.0
Percentage of Assets16.115.6
Percentage of Assets feye:ConvertibleSeniorNotesDue2024 us-gaap:ConvertibleNotesPayable0.00.0

feye:ConvertibleSeniorNotesdue2024, us-gaap:ConvertibleNotesPayable


Long
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-30
Value507501494488482465459454448
Percentage of LongTermDebt100.00.00.00.00.00.00.00.00.0
Percentage of Assets15.618.518.517.516.717.217.117.217.2
Percentage of Assets feye:ConvertibleSeniorNotesdue2024 us-gaap:ConvertibleNotesPayable0.00.00.00.00.00.00.00.00.0

feye:SeriesAConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Long
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-30
Value23232323118117112111109108411406395390385380376366361357
Percentage of LongTermDebt4.64.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.70.70.90.94.24.14.24.14.24.217.017.417.317.016.215.915.515.014.914.7
Percentage of Assets feye:SeriesAConvertibleSeniorNotes us-gaap:ConvertibleNotesPayable0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

feye:SeriesBConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Long
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-30
Value435430425420415410396391386382377373364360356351347339335331
Percentage of LongTermDebt84.884.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets13.713.315.715.714.814.214.614.514.714.615.616.016.015.714.914.614.413.913.813.6
Percentage of Assets feye:SeriesBConvertibleSeniorNotes us-gaap:ConvertibleNotesPayable0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value4.498124.4044.6544.684.4943.9932724232222158.327.0878.2559.82311109.9599.47.4036.5533.6232.120.702
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.40.20.20.20.20.11.00.90.90.90.90.70.40.30.30.40.50.40.40.60.40.40.20.20.6

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-31
Value544261646870740.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.71.32.32.42.42.42.70.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-03-312020-12-312020-09-30
Value121215
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0
Percentage of Assets0.40.40.6

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-03-312020-12-312020-09-30
Value111013
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0
Percentage of Assets0.40.30.5

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-03-312020-12-312020-09-30
Value108.86311
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0
Percentage of Assets0.30.30.4

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2021-03-312020-12-312020-09-30
Value108.19111
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0
Percentage of Assets0.30.30.4

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2021-03-312020-12-312020-09-30
Value201426
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0
Percentage of Assets0.60.41.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-31
Value68587983878889
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.21.83.03.13.13.13.3

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-03-312020-12-312020-09-30
Value8570100
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0
Percentage of Assets2.72.23.7

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-03-312020-12-312020-09-30
Value171220
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0
Percentage of Assets0.50.40.8

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value715732663660653701702728619650650660619744792806841859933104411091182117912501293142310485.39-14.6511.348
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.522.624.524.623.424.30.00.022.924.124.725.325.531.934.735.135.335.838.642.845.648.669.171.174.580.376.24.30.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2.0393.8345.1146.311-1.6691.181.0770.97-0.202-2.299-4.476-2.881-1.742-2.225-0.4410.00.00.0
Percentage of StockholdersEquity0.30.50.81.0-0.30.20.20.1-0.0-0.4-0.7-0.4-0.2-0.2-0.00.00.0-0.0
Percentage of Assets0.10.10.20.2-0.10.00.00.0-0.0-0.1-0.2-0.1-0.1-0.1-0.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value362334573152289126822403191812711095251
Percentage of StockholdersEquity494.4492.7484.7388.2319.0230.1153.4121.32026.9-359.13833.2
Percentage of Assets111.6119.6116.9124.0112.698.4109.192.487.20.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value0.0240.0220.020.0190.0170.0160.0150.0140.0020.0010.001
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.0-0.00.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-31
Value365736233513347034883457340933693194315229522891
Percentage of StockholdersEquity511.5494.4529.8525.6533.7492.7485.1462.4515.7484.7476.6388.2
Percentage of Assets114.9111.6129.9129.4124.7119.60.00.0118.0116.9121.7124.0
Percentage of Assets us-gaap:CommonStockIncludingAdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value-2864.842-2814.198-2775.595-2736.477-2683.201-2606.895-2557.679-2492.184-2424.861-2349.486-2178.193-1993.763-1690.072-1206.507-667.292-223.502-102.867-67.111-50.329
Percentage of StockholdersEquity-400.6-384.0-418.5-414.4-410.5-371.5-363.9-342.0-391.5-361.2-351.6-267.7-200.9-115.5-53.3-21.3-1908.5458.1-3733.6
Percentage of Assets-89.9-86.7-102.6-102.1-96.0-90.20.00.0-89.6-87.1-89.8-85.5-70.9-49.4-37.9-16.2-82.10.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312016-12-312015-12-312014-12-31
Value-80.0-80.0-80.0-80.0-150.0-150.0-150.0-150.0-150.0-150.0-150.0-150.0-150.0-150.00.0
Percentage of StockholdersEquity-11.2-10.9-12.1-12.1-22.9-21.4-21.3-20.6-24.2-23.1-24.2-20.1-17.8-14.40.0
Percentage of Assets-2.5-2.5-3.0-3.0-5.4-5.20.00.0-5.5-5.6-6.2-6.4-6.3-6.10.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value24000.024000.023000.022000.022000.022000.020000.020000.020000.020000.019000.019000.018000.018000.017000.017000.017000.016000.016000.016000.016000.015000.015000.014000.014000.02000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value3657362335133470348834573194315231043064295228912787273126822638258724032330226719801918185517481271109
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets114.9111.6129.9129.4124.7119.6118.0116.9117.7117.2121.7124.0122.0119.0112.6109.8106.998.495.793.2116.1109.1106.998.692.487.2

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value-2864800000.0-2814200000.0-2775600000.0-2736500000.0-2683200000.0-2606900000.0-2424900000.0-2349500000.0-2301100000.0-2251100000.0-2178200000.0-1993800000.0-1843800000.0-1773100000.0-1690100000.0-1628500000.0-1505200000.0-1206500000.0-1070400000.0-934830000.0-801260000.0-667290000.0-561570000.0-324710000.0-223500000.0-102870000.0
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-89.9-86.7-102.6-102.1-96.0-90.2-89.6-87.1-87.3-86.1-89.8-85.5-80.7-77.2-70.9-67.8-62.2-49.4-43.9-38.4-47.0-37.9-32.4-18.3-16.2-82.1

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-31
Value2039000.03834000.05114000.06311000.0-1669000.01180000.0-202000.0-2299000.0-2545000.0-3495000.0-4476000.0-2881000.0-1393000.0-1419000.0-1742000.0-457000.0413000.0-2225000.0-424000.0-472000.0-38000.0-441000.0-326000.0-138000.00
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.10.20.2-0.10.0-0.0-0.1-0.1-0.1-0.2-0.1-0.1-0.1-0.1-0.00.0-0.1-0.0-0.0-0.0-0.0-0.0-0.00.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-31
Value808080801501501501501501501501501501501501501501501501500.0
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.52.53.03.05.45.25.55.65.75.76.26.46.66.56.36.26.26.16.26.20.0

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Adjustments
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-03-31
Value4641383737414142
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStockIncludingAdditionalPaidInCapital0.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value20713314-24.4563918-14.929243021-44.2879.1873312-11.47-16.9526.93214-13.132-22.5169.444-8.27339-3.216-0.268-46.48-61.934-22.588-25.3385.457
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.528.814.06.4-10.916.88.2-6.911.614.110.3-21.84.616.36.3-6.0-9.20.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value-172.559-114.928-125.139188-20.23-12.871-54.903-72.194-29.068-29.33123-17.023-25.338-24.984-11.107-14.508-8.724-19.717215.834-197.347-57.916-284.434-216.158-18.24130-31.249-223.392-158.069-107.005-6.758
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-70.0-46.4-52.581.8-9.0-5.5-24.3-33.2-13.8-13.510.9-8.4-12.7-12.1-5.6-7.6-4.70.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value-7.7834051.776-82.349-6.051101.664120.843110.8532443.11114.98517-34.617124.03916-7.126133.12876611174.95215448-21.44915
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.2163.90.7-35.8-2.74.60.76.00.45.20.4120.81.65.62.58.9-18.70.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-159.482362-90.096120-50.73737-34.741-74.156-3.772
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-64.7146.3-37.852.4-22.615.9-15.4-34.1-1.8

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value-126000.0-929000.0-63000.011000.0143000.0404000.0-643000.0-493000.0475000.0-799000.0-71000.00-60000.0-1234000.0-304000.00251000.0-90000.088000.0-871000.0-11053000.0-1473000.039000.0-1000.082000.0-9727000.0-11182000.0-11442000.0-7518000.0-61028000.00
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value27252323242728242319222222242526262829303029272726262422208.4143.234
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value8.13-1.639-4.321-14.6881.7172.58-2.288-2.3876.802-1.59-2.4631.202-5.3547.0-4.7530.4623.331-7.495-4.756-3.451-3.3916.4167.342-1.834-4.2195.166-1.2565.293-12.3965.389-0.655
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value-44.5171914-20.064-30.256182613-46.479278.92318-42.986246.1614.266-14.584-1.413-0.264-16.964-43.1443135-54.104-32.736374826-15.22114-4.703
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value234000.0-1709000.0-1591000.0-920000.0935000.0-22000.0-272000.0-152000.0395000.01070000.01880000.0893000.01373000.01443000.01317000.0-517000.01090000.01570000.0-1157000.0497000.0-2325000.02834000.01677000.0755000.02554000.02186000.0567000.0676000.0-1405000.0-2085000.0-326000.0
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value20713314-24.4563918-14.929243021-44.2879.1873312-11.47-16.9526.93214-13.132-22.5169.444-8.27339-3.216-0.268-46.48-61.934-22.588-25.3385.457
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.528.814.06.4-10.916.88.2-6.911.614.110.3-21.84.616.36.3-6.0-9.20.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value-50.644-38.603-39.118-53.276-76.306-49.216-65.495-67.323-75.375-48.397-50.037-72.859-71.83-88.921-69.214-70.732-82.988-61.536-123.373-139.32-155.9-136.148-135.53-133.573-133.964-105.726-120.031-116.823-101.211-2.513-50.926-26.961
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.6-15.6-16.4-23.2-34.0-20.9-29.0-30.9-35.8-22.2-23.6-35.9-36.1-43.2-35.1-36.9-44.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312018-03-31
Value-50.644-38.603-39.118-53.276-76.306-75.375-71.83
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.6-15.6-16.4-23.2-34.0-35.8-36.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value4542403736363640403537384240423943304657645758564945433825123.252
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value-172.559-114.928-125.139188-20.23-12.871-54.903-72.194-29.068-29.33123-17.023-25.338-24.984-11.107-14.508-8.724-19.717215.834-197.347-57.916-284.434-216.158-18.24130-31.249-223.392-158.069-107.005-6.758
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-70.0-46.4-52.581.8-9.0-5.5-24.3-33.2-13.8-13.510.9-8.4-12.7-12.1-5.6-7.6-4.70.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value104.1284.6425.876116.9910141313101214178.6128.8298.4838.3056.9316.821141712111212231714216.172
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value-7.7834051.776-82.349-6.051101.664120.843110.8532443.11114.98517-34.617124.03916-7.126133.12876611174.95215448-21.44915
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.2163.90.7-35.8-2.74.60.76.00.45.20.4120.81.65.62.58.9-18.70.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Dividends

us-gaap:Dividends us-gaap:StatementClassOfStock

us-gaap:Dividends

us-gaap:ConvertiblePreferredStock


Dividendsus-gaap:
Period End2021-03-31
Value4500000.0
Percentage of Dividends100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber


Share
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value3.1533.4852.9993.4253.9644.3913.1833.3093.5013.6943.924.4335.4747.0198.0858.9119.802111213151821262717147.605
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value8.548.339.879.659.669.0712.7112.4912.3412.5112.5612.3112.1311.0410.710.7810.8610.6710.5510.359.89.138.537.625.820.980.420.07
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod


Share
Period End2021-03-312020-12-312017-06-302017-03-312016-12-312016-09-30
Value111.1841.0129.6740.9363.211
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value607711379156156113841.689
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value50564239433121101.1720.6990.501
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value31527619318523381544.18639
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Sale Of Short Term Investments

us-gaap:ProceedsFromSaleOfShortTermInvestments

us-gaap:ProceedsFromSaleOfShortTermInvestments


Proceeds
Period End2020-12-312020-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value0.9530.00.00.00.00.00.00.00.03.620.00.04.5070.04.8070.0
Percentage of ProceedsFromSaleOfShortTermInvestments100.00.00.00.00.00.00.00.00.0100.00.00.0100.00.0100.00.0

feye:AdjustmentsToAdditionalPaidInCapitalAccretionOfTemporaryEquity us-gaap:StatementEquityComponents

feye:AdjustmentsToAdditionalPaidInCapitalAccretionOfTemporaryEquity

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Adjustments
Period End2021-03-31
Value-82000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalAccretionOfTemporaryEquity100.0

feye:AdjustmentsToAdditionalPaidInCapitalDividendsFromTemporaryEquity us-gaap:StatementEquityComponents

feye:AdjustmentsToAdditionalPaidInCapitalDividendsFromTemporaryEquity

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Adjustments
Period End2021-03-31
Value-4512000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalDividendsFromTemporaryEquity100.0

feye:BusinessCombinationConsiderationTransferredEquityInterestsForPrecombinationServices us-gaap:BusinessAcquisition

feye:BusinessCombinationConsiderationTransferredEquityInterestsForPrecombinationServices

feye:RespondSoftware


Business
Period End2020-11-30
Value1200000.0
Percentage of BusinessCombinationConsiderationTransferredEquityInterestsForPrecombinationServices100.0

feye:ContractWithCustomerLiabilityIncreaseFromCashReceipts

feye:ContractWithCustomerLiabilityIncreaseFromCashReceipts


Contract
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value200307239202170274248221181
Percentage of ContractWithCustomerLiabilityIncreaseFromCashReceipts100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:RestructuringChargesCashCharges

feye:RestructuringChargesCashCharges


Restructuring
Period End2020-12-312020-03-31
Value1.35.6
Percentage of RestructuringChargesCashCharges100.0100.0

feye:RestructuringChargesCashChargesOtherAdjustments

feye:RestructuringChargesCashChargesOtherAdjustments


Restructuring
Period End2020-12-31
Value0
Percentage of RestructuringChargesCashChargesOtherAdjustments0.0

feye:RestructuringChargesCashChargesProvisionForRestructuring

feye:RestructuringChargesCashChargesProvisionForRestructuring


Restructuring
Period End2020-12-31
Value1.3
Percentage of RestructuringChargesCashChargesProvisionForRestructuring100.0

feye:RestructuringChargesExcludingNoncashCharges

feye:RestructuringChargesExcludingNoncashCharges


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-03-312016-12-31
Value1.3060.368111.9972.9370.0
Percentage of RestructuringChargesExcludingNoncashCharges100.0100.0100.0100.0100.00.0

feye:RestructuringChargesExcludingNoncashCharges us-gaap:RestructuringCostAndReserve

feye:EmployeeSeveranceandRelatedCosts


Restructuring
Period End2020-09-302020-06-302020-03-31
Value0.287111.997
Percentage of RestructuringChargesExcludingNoncashCharges78.098.5100.0

us-gaap:FacilityClosing


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-03-312016-12-31
Value0.0190.0810.1760.00.650.0
Percentage of RestructuringChargesExcludingNoncashCharges1.522.01.50.022.10.0

feye:RestructuringChargesReductionInSeveranceBenefits

feye:RestructuringChargesReductionInSeveranceBenefits


Restructuring
Period End2020-12-31
Value200000.0
Percentage of RestructuringChargesReductionInSeveranceBenefits100.0

feye:TemporaryEquityIssuanceCosts us-gaap:StatementClassOfStock

feye:TemporaryEquityIssuanceCosts

us-gaap:ConvertiblePreferredStock


Temporary
Period End2021-03-31
Value82000.0
Percentage of TemporaryEquityIssuanceCosts100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Adjustments
Period End2021-03-312020-09-302020-06-302020-03-312019-06-30
Value8798000.0762000.0640000.07399000.00
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.00.0

us-gaap:AmortizationOfFinancingCostsAndDiscounts us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:AmortizationOfFinancingCostsAndDiscounts

feye:ConvertibleSeniorNotesDue2024, us-gaap:ConvertibleNotesPayable


Amortization
Period End2021-03-312020-03-31
Value6.2715.97
Percentage of AmortizationOfFinancingCostsAndDiscounts100.0100.0

feye:ConvertibleSeniorNotesdue2024, us-gaap:ConvertibleNotesPayable


Amortization
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6.1956.1196.0445.975.8975.8255.7545.6845.6155.546
Percentage of AmortizationOfFinancingCostsAndDiscounts0.00.00.0100.00.00.00.00.00.00.0

feye:SeriesAConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Amortization
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-30
Value0.00.01.0231.518-5.9061.461.461.4421.4231.4055.2575.1895.123
Percentage of AmortizationOfFinancingCostsAndDiscounts0.00.00.025.40.00.00.00.00.00.00.00.00.0

feye:SeriesBConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Amortization
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-30
Value5.1135.0534.9944.9354.8774.824.7634.7074.6524.5974.5434.4374.3864.334
Percentage of AmortizationOfFinancingCostsAndDiscounts81.50.00.00.081.70.00.00.00.00.00.00.00.00.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

feye:RespondSoftware


Business
Period End2020-11-30
Value177
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable

feye:RespondSoftware


Business
Period End2020-11-30
Value60
Percentage of BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value2.6960.377-0.317-0.8673.2150.826-2.093-2.639.161-3.4042.0930.35613-3.869.331.9615.922-2.0522.129-1.8215.7793.6231.396-1.7975.382-1.306-3.9493.9917.98-6.0855.827
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareAdditions

us-gaap:CapitalizedComputerSoftwareAdditions


Capitalized
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value7.94.64.65.25.84.96.06.15.55.35.56.84.94.22.23.24.7-1.41.42.31.94.30.0
Percentage of CapitalizedComputerSoftwareAdditions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:CapitalizedComputerSoftwareAmortization1

us-gaap:CapitalizedComputerSoftwareAmortization1


Capitalized
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value5.05.04.74.74.64.84.44.03.53.72.32.31.91.81.71.30.81.20.80.50.4
Percentage of CapitalizedComputerSoftwareAmortization1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ConcentrationRiskPercentage1

feye:OneCustomer, us-gaap:AccountsReceivable, us-gaap:CustomerConcentrationRisk


Concentration
Period End2020-09-30
Value14.0
Percentage of ConcentrationRiskPercentage1100.0

feye:OneDistributor, us-gaap:RevenueFromContractWithCustomer, us-gaap:CustomerConcentrationRisk


Concentration
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-03-31
Value12.011.00.120.110.00.16
Percentage of ConcentrationRiskPercentage10.078.60.00.00.00.0

feye:OneReseller, us-gaap:RevenueFromContractWithCustomer, us-gaap:CustomerConcentrationRisk


Concentration
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value14.017.00.140.1414.00.14
Percentage of ConcentrationRiskPercentage10.0121.40.00.00.00.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value246238229224235225217210217211202199
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentInterestRateDuringPeriod us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateDuringPeriod

feye:ConvertibleSeniorNotesdue2024, us-gaap:ConvertibleNotesPayable


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value06.00.060.06-6.0386.10.0610.0610.0040.061
Percentage of DebtInstrumentInterestRateDuringPeriod0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:SeriesAConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value1.0-0.81.00.0420.062-6.2366.20.0620.06300.0630.0630.0630.0010.0630.0640.06400.0640.0640.06400.0650.064
Percentage of DebtInstrumentInterestRateDuringPeriod0.00.016.770.0103.3103.3101.6101.6103.30.0103.30.00.00.00.00.00.00.00.00.00.00.00.00.0

feye:SeriesBConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value6.50.16.50.0660.066-6.6336.60.0660.06700.0670.0670.06800.0680.0680.06900.0690.0690.070.0010.070.07
Percentage of DebtInstrumentInterestRateDuringPeriod0.00.0108.3110.0110.0109.9108.2108.2109.80.0109.80.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value119.78.99.29.09.79.99.49.28.99.29.29.49.310111111121314161515141412109.77.74.93.0
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillPurchaseAccountingAdjustments

us-gaap:GoodwillPurchaseAccountingAdjustments


Goodwill
Period End2021-03-31
Value50000.0
Percentage of GoodwillPurchaseAccountingAdjustments100.0

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value5.379-1.8361.171-4.754-1.319-4.284.772-4.3240.7581.8157.47-3.3054.254-2.7441.695-1.68-0.93-6.0951.708-7.6690.902-0.0593.6631.8232.0684.719-2.0632.7316.016
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-45.759600.769-27.01-54.71139223.809-28.639477.599-6.58-23.965345.517
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value-25.3229.3881413-1.572-6.74311-1.093-7.611-0.1445.5734.359-5.5680.478.9760.125-7.006-30.76320-5.423-8.9896.4379.2971.683-2.675-1.757145.1315.703124.093
Percentage of IncreaseDecreaseInEmployeeRelatedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value-7.308-6.609-2.992-3.255-3.607-2.671-2.582-2.513-2.0513.7180.240.8880.8546.633-0.2367.1181.234-1.043-1.5680.526-2.1320.9980.1840.561.9970.8490.9741.9551.5053.1360.053
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value-5.4539.869-0.339-10.31-2.827-2.179-0.8653.016-6.975107.906-11.2226.338.265-14.1666.0184.619-5.086-0.85-5.562.1521.734-3.4132.481-0.127-3.588-0.9460.9912.0939.9530.276
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseDebtExcludingAmortization us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:InterestExpenseDebtExcludingAmortization

feye:ConvertibleSeniorNotesdue2024, us-gaap:ConvertibleNotesPayable


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1312000.01313000.01313000.01313000.02105000.01313000.01313000.01313000.01313000.01313000.0520000.0
Percentage of InterestExpenseDebtExcludingAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:SeriesAConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Interest
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value59000.059000.059000.0219000.0300000.0-1339000.0300000.0300000.0300000.0300000.0300000.0788000.01150000.01150000.01150000.01150000.01150000.01150000.01150000.01150000.01150000.01150000.01150000.0383000.0
Percentage of InterestExpenseDebtExcludingAmortization0.04.54.516.722.8-63.622.822.822.822.822.8151.50.00.00.00.00.00.00.00.00.00.00.00.0

feye:SeriesBConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Interest
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value1869000.01869000.01869000.01869000.01869000.01869000.01869000.01869000.01869000.01869000.01869000.01848000.01869000.01869000.01869000.01869000.01869000.01869000.01869000.01869000.01869000.01869000.01869000.0623000.0
Percentage of InterestExpenseDebtExcludingAmortization0.0142.5142.3142.3142.388.8142.3142.3142.3142.3142.3355.40.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeOther

us-gaap:InterestIncomeOther


Interest
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value1.6441.8752.1642.8634.4244.7575.2756.1375.8485.2264.4843.3832.942.6552.4682.1682.0321.8031.6871.6271.4651.3190.9560.3910.2690.2570.2280.1830.0450.0150.0010.004
Percentage of InterestIncomeOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value4.1744.0744.4924.5624.6713.8065.427
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value4.0993.8364.3634.2634.4183.9194.762
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-03-312020-12-312020-06-302020-03-312019-09-302019-06-302019-03-31
Value5.3854.8935.6254.730.8577.772.585
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-1795000.0-1197000.07980000.0-2849000.0107000.01172000.02097000.0
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-31
Value-1795000.0-1280000.0-1197000.07980000.0-2849000.0103000.0107000.01172000.02097000.0-1595000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-2010000.0-162000.0-228000.0-341000.0-6267000.0-482000.0174000.0464000.0-1101000.0-953000.0-1390000.0-1030000.0-1342000.0-2122000.0-1601000.0-1375000.0-2119000.0-2852000.0-4443000.0-1603000.0-938000.0-1528000.0-1059000.0-1576000.0-509000.0-559000.0-1519000.0-94000.0-89000.0-1285000.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaidInKindInterest

us-gaap:PaidInKindInterest


Paid
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value111111121212121111
Percentage of PaidInKindInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsForRestructuring


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312017-06-302017-03-312016-12-312016-09-302015-09-302015-06-302015-03-31
Value0.7641.1795.8599.0931.7432.0730.5950.9759.0467.6470.0720.2120.245
Percentage of PaymentsForRestructuring100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring us-gaap:RestructuringCostAndReserve

feye:EmployeeSeveranceandRelatedCosts


Payments
Period End2021-03-312020-09-302020-06-302020-03-31
Value0.4435.839.0591.709
Percentage of PaymentsForRestructuring58.099.599.698.0

us-gaap:FacilityClosing


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.3210.0990.0290.0340.0340.00.5290.2890.6340.170.0190.0720.2120.2450.281
Percentage of PaymentsForRestructuring42.08.40.50.42.00.088.929.67.02.20.0100.0100.0100.00.0

us-gaap:PaymentsOfStockIssuanceCosts

us-gaap:PaymentsOfStockIssuanceCosts


Payments
Period End2021-03-31
Value82000.0
Percentage of PaymentsOfStockIssuanceCosts100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value8798000.0561000.0763000.0640000.07399000.000404000.0414000.0590000.000001124000.000
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.00.00.0100.0100.0100.00.00.00.00.0100.00.00.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

feye:RespondSoftware


Payments
Period End2020-11-30
Value116
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302013-12-31
Value-0.0491100.00.0120.00.01270.0-0.7050.0-0.0325.9774.30.00.00.00.00.00.02040.00.00.00.085
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.00.00.0100.00.00.0100.00.0100.00.0100.0100.0100.00.00.00.00.00.00.0100.00.00.00.00.0100.0

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherInvestments


Payments
Period End2020-09-302020-06-302020-03-312019-06-302019-03-31
Value001000000.000
Percentage of PaymentsToAcquireOtherInvestments0.00.0100.00.00.0

us-gaap:PaymentsToAcquireShortTermInvestments

us-gaap:PaymentsToAcquireShortTermInvestments


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value339881983.5103124234101156133127109109939212498127138152881283382613949159143
Percentage of PaymentsToAcquireShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments


Proceeds
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value176877816910811819017014111716110410493901189411516716011185675734428.00.0
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromOtherDeposits

us-gaap:ProceedsFromOtherDeposits


Proceeds
Period End2021-03-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value461000.0-19000.020000.067000.0-205000.0211000.0
Percentage of ProceedsFromOtherDeposits100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value1.0971.0642.5392.3831.3481.0281.6640.6520.8431.4580.8531.4693.112.5675.3996.8724.3113.3844.0593.5612.84-6.183.5981911175.894162.0750.0283.44
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockPlans

us-gaap:ProceedsFromStockPlans


Proceeds
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-30
Value9.8880.09.7710.09.8230.09.330.09.3960.0110.0
Percentage of ProceedsFromStockPlans100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0

us-gaap:RestructuringAndRelatedCostNumberOfPositionsEliminatedPeriodPercent

us-gaap:RestructuringAndRelatedCostNumberOfPositionsEliminatedPeriodPercent


Restructuring
Period End2020-08-312020-06-302020-04-302020-03-312019-03-31
Value1.00.066.00.020.02
Percentage of RestructuringAndRelatedCostNumberOfPositionsEliminatedPeriodPercent100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-30
Value1.4871.4881210-0.0156.4810.03.7990.00.00.00.0223.5371.670.00.00.00.01.5582.7690.00.0
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.0100.0100.0100.00.00.00.00.0100.0100.00.00.0

us-gaap:RestructuringCostsAndAssetImpairmentCharges

us-gaap:RestructuringCostsAndAssetImpairmentCharges


Restructuring
Period End2020-12-31
Value100000.0
Percentage of RestructuringCostsAndAssetImpairmentCharges100.0

us-gaap:RestructuringReserveTranslationAndOtherAdjustment

us-gaap:RestructuringReserveTranslationAndOtherAdjustment


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312017-06-302017-03-312016-12-312016-09-30
Value-101000.0-186000.0-184000.0-139000.03373000.0-1150000.0-86000.0-439000.0-6000.01438000.0
Percentage of RestructuringReserveTranslationAndOtherAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringReserveTranslationAndOtherAdjustment us-gaap:RestructuringCostAndReserve

feye:EmployeeSeveranceandRelatedCosts


Restructuring
Period End2021-03-312020-09-302020-06-302020-03-31
Value-110000.0-203000.0-142000.03498000.0
Percentage of RestructuringReserveTranslationAndOtherAdjustment108.9110.3102.2103.7

us-gaap:FacilityClosing


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312017-06-302017-03-312016-12-312016-09-30
Value9000.031000.019000.03000.0-125000.0-1150000.03000.0-59000.0-6000.01438000.0
Percentage of RestructuringReserveTranslationAndOtherAdjustment-8.9-16.7-10.3-2.2-3.7100.0-3.513.4100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-03-312020-12-312020-06-302020-03-312019-09-302019-06-302019-03-31
Value110.00.00.4787.291-2.0972.575
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.00.00.0100.0100.0100.0100.0

us-gaap:SaleOfStockConsiderationReceivedOnTransaction us-gaap:StatementClassOfStock, us-gaap:SubsidiarySaleOfStock

us-gaap:SaleOfStockConsiderationReceivedOnTransaction

us-gaap:SeriesAPreferredStock, us-gaap:PrivatePlacement


Sale
Period End2020-12-31
Value400
Percentage of SaleOfStockConsiderationReceivedOnTransaction100.0

us-gaap:SaleOfStockConsiderationReceivedOnTransaction us-gaap:SubsidiarySaleOfStock

us-gaap:PrivatePlacement


Sale
Period End2020-12-11
Value400
Percentage of SaleOfStockConsiderationReceivedOnTransaction0.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod


Share
Period End2021-03-312020-12-31
Value814000.0490000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue


Share
Period End2021-03-312020-12-31
Value16.23-0.13
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue


Share
Period End2021-03-312020-12-31
Value20.980
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod


Share
Period End2021-03-312020-12-31
Value3.1241.927
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue


Share
Period End2021-03-312020-12-31
Value14.120.03
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate us-gaap:Range, us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

srt:Maximum, us-gaap:EmployeeStock


Share
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value68.067.320.680.680.390.380.030.350.350.5200.520.52
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

srt:Minimum, us-gaap:EmployeeStock


Share
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value48.047.480.520.520.290.3200.320.320.5-0.210.50.5
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate70.670.576.576.574.484.20.091.491.496.20.096.296.2

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum

us-gaap:EmployeeStock


Share
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-06-30
Value0.180.17820.00180.00180.023500.02350.02350.0270.00470.02230.02230.01620.0050.01120.01120.00790.0057
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum

us-gaap:EmployeeStock


Share
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-06-30
Value0.090.08830.00170.00170.016-0.00610.02210.02210.020800.02080.02080.010500.01050.01050.00380.0038
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue


Share
Period End2021-03-312020-12-31
Value4.8553.986
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod


Share
Period End2021-03-312020-12-31
Value45000.086000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice


Share
Period End2021-03-312020-12-31
Value3.82-0.29
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice


Share
Period End2021-03-312020-12-31
Value22.42-1.97
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice100.0100.0

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


Short
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value298000.0460000.0352000.0522000.0527000.0112000.0937000.0
Percentage of ShortTermLeaseCost100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised


Stock
Period End2021-03-312020-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-03-31
Value287000.0270000.0490000.0682000.02050000.02634000.02174000.0796850.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stock
Period End2020-09-302020-06-302019-09-302019-06-30
Value0.0120.012
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan0.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stock
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-03-31
Value1.0972.5392.3831.3481.6650.6510.8433.11
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stock
Period End2020-09-302020-06-302019-06-30
Value0.0700.0
Percentage of StockRepurchasedAndRetiredDuringPeriodValue0.0100.00.0

us-gaap:TreasuryStock


Stock
Period End2020-12-312020-09-302020-06-302019-06-30
Value0.0-140.0700.0
Percentage of StockRepurchasedAndRetiredDuringPeriodValue0.00.0100.00.0

us-gaap:SubleaseIncome

us-gaap:SubleaseIncome


Sublease
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value223000.0222000.0223000.0223000.0274000.0225000.0272000.0
Percentage of SubleaseIncome100.0100.0100.0100.0100.0100.0100.0

us-gaap:TemporaryEquityAccretionOfDividends

us-gaap:TemporaryEquityAccretionOfDividends


Temporary
Period End2021-03-31
Value4512000.0
Percentage of TemporaryEquityAccretionOfDividends100.0

us-gaap:TemporaryEquityAccretionOfDividends us-gaap:StatementClassOfStock

us-gaap:ConvertiblePreferredStock


Temporary
Period End2021-03-31
Value4512000.0
Percentage of TemporaryEquityAccretionOfDividends100.0

us-gaap:TemporaryEquityAccretionToRedemptionValue

us-gaap:TemporaryEquityAccretionToRedemptionValue


Temporary
Period End2021-03-31
Value82000.0
Percentage of TemporaryEquityAccretionToRedemptionValue100.0

us-gaap:TemporaryEquityAccretionToRedemptionValue us-gaap:StatementClassOfStock

us-gaap:ConvertiblePreferredStock


Temporary
Period End2021-03-31
Value82000.0
Percentage of TemporaryEquityAccretionToRedemptionValue100.0

us-gaap:TemporaryEquityAccretionToRedemptionValueAdjustment

us-gaap:TemporaryEquityAccretionToRedemptionValueAdjustment


Temporary
Period End2021-03-31
Value82000.0
Percentage of TemporaryEquityAccretionToRedemptionValueAdjustment100.0

us-gaap:TemporaryEquityDividendsAdjustment

us-gaap:TemporaryEquityDividendsAdjustment


Temporary
Period End2021-03-31
Value4512000.0
Percentage of TemporaryEquityDividendsAdjustment100.0

feye:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTangibleAssetsNet us-gaap:BusinessAcquisition

feye:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTangibleAssetsNet

feye:RespondSoftware


Business
Period End2020-11-30
Value-4.551
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTangibleAssetsNet100.0

feye:CashCashEquivalentsAndAvailableForSaleDebtSecuritiesAmortizedCost

feye:CashCashEquivalentsAndAvailableForSaleDebtSecuritiesAmortizedCost


Cash
Period End2020-12-312019-12-312018-12-312017-12-31
Value620703708721
Percentage of CashCashEquivalentsAndAvailableForSaleDebtSecuritiesAmortizedCost100.0100.0100.0100.0

feye:DeferredTaxAssetLeaseLiability

feye:DeferredTaxAssetLeaseLiability


Deferred
Period End2020-12-312019-12-31
Value1421
Percentage of DeferredTaxAssetLeaseLiability100.0100.0

feye:DeferredTaxLiabilitiesCapitalizedContractCost

feye:DeferredTaxLiabilitiesCapitalizedContractCost


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value17161715
Percentage of DeferredTaxLiabilitiesCapitalizedContractCost100.0100.0100.0100.0

feye:DepositsAndOtherAssetsNoncurrent

feye:DepositsAndOtherAssetsNoncurrent


Deposits
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value68747074808482
Percentage of DepositsAndOtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0

feye:FiniteLivedIntangibleAssetExpectedAmortizationYearFourAndThereafter

feye:FiniteLivedIntangibleAssetExpectedAmortizationYearFourAndThereafter


Finite
Period End2021-03-31
Value5172000.0
Percentage of FiniteLivedIntangibleAssetExpectedAmortizationYearFourAndThereafter100.0

feye:FiniteLivedIntangibleAssetsMeasurementInput us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:MeasurementInputType

feye:FiniteLivedIntangibleAssetsMeasurementInput

feye:RespondSoftware, feye:InProcessTechnology, us-gaap:MeasurementInputDiscountRate


Finite
Period End2020-11-30
Value13.0
Percentage of FiniteLivedIntangibleAssetsMeasurementInput100.0

feye:RespondSoftware, us-gaap:ContractBasedIntangibleAssets, feye:MeasurementInputRoyaltyRate


Finite
Period End2020-11-30
Value1.0
Percentage of FiniteLivedIntangibleAssetsMeasurementInput7.7

feye:RespondSoftware, us-gaap:ContractBasedIntangibleAssets, us-gaap:MeasurementInputDiscountRate


Finite
Period End2020-11-30
Value12.0
Percentage of FiniteLivedIntangibleAssetsMeasurementInput92.3

feye:RespondSoftware, us-gaap:CustomerRelationships, us-gaap:MeasurementInputDiscountRate


Finite
Period End2020-11-30
Value13.0
Percentage of FiniteLivedIntangibleAssetsMeasurementInput100.0

feye:RespondSoftware, us-gaap:DevelopedTechnologyRights, us-gaap:MeasurementInputDiscountRate


Finite
Period End2020-11-30
Value12.0
Percentage of FiniteLivedIntangibleAssetsMeasurementInput92.3

feye:RespondSoftware, us-gaap:TradeNames, feye:MeasurementInputRoyaltyRate


Finite
Period End2020-11-30
Value11.0
Percentage of FiniteLivedIntangibleAssetsMeasurementInput84.6

feye:RespondSoftware, us-gaap:TradeNames, us-gaap:MeasurementInputDiscountRate


Finite
Period End2020-11-30
Value12.0
Percentage of FiniteLivedIntangibleAssetsMeasurementInput92.3

feye:LesseeOperatingLeaseLeaseNotYetCommencedLiability

feye:LesseeOperatingLeaseLeaseNotYetCommencedLiability


Lessee
Period End2020-12-31
Value18
Percentage of LesseeOperatingLeaseLeaseNotYetCommencedLiability100.0

feye:LettersOfCreditAmountAvailable

feye:LettersOfCreditAmountAvailable


Letters
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3400000.03900000.03600000.03600000.03500000.03600000.03800000.0
Percentage of LettersOfCreditAmountAvailable100.0100.0100.0100.0100.0100.0100.0

feye:RevenueContractWithCustomerLiabilityRemainingPerformanceObligationPercentage

feye:RevenueContractWithCustomerLiabilityRemainingPerformanceObligationPercentage


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-03-31
Value65.064.063.01.01.01.01.01.01.00.6
Percentage of RevenueContractWithCustomerLiabilityRemainingPerformanceObligationPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueExpectedToVestOnPerformanceOutstanding

feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueExpectedToVestOnPerformanceOutstanding


Share
Period End2021-03-31
Value36
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueExpectedToVestOnPerformanceOutstanding100.0

feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestOnPerformanceOutstandingNumber

feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestOnPerformanceOutstandingNumber


Share
Period End2021-03-312020-12-312020-09-30
Value1883000.01631000.01574000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestOnPerformanceOutstandingNumber100.0100.0100.0

feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestOnPerformanceWeightedAverageGrantDateFairValue

feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestOnPerformanceWeightedAverageGrantDateFairValue


Share
Period End2021-03-312020-12-312020-09-30
Value19.4117.2717.86
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestOnPerformanceWeightedAverageGrantDateFairValue100.0100.0100.0

feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumPercentageOfFairValueForExercisePrice us-gaap:PlanName

feye:ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumPercentageOfFairValueForExercisePrice

feye:A2013StockOptionPlan


Share
Period End2021-03-31
Value110.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumPercentageOfFairValueForExercisePrice100.0

feye:ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueExpectedToVestOnPerformanceOutstanding

feye:ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueExpectedToVestOnPerformanceOutstanding


Share
Period End2020-12-312020-09-30
Value3719
Percentage of ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueExpectedToVestOnPerformanceOutstanding100.0100.0

feye:ShareBasedCompensationArrangementBySharebasedPaymentAwardMinimumPercentageOfFairValueForExercisePrice us-gaap:PlanName

feye:ShareBasedCompensationArrangementBySharebasedPaymentAwardMinimumPercentageOfFairValueForExercisePrice

feye:A2013StockOptionPlan


Share
Period End2020-09-30
Value110.0
Percentage of ShareBasedCompensationArrangementBySharebasedPaymentAwardMinimumPercentageOfFairValueForExercisePrice100.0

feye:TemporaryEquityAccretionToRedemptionValueRecognized us-gaap:StatementClassOfStock

feye:TemporaryEquityAccretionToRedemptionValueRecognized

us-gaap:ConvertiblePreferredStock


Temporary
Period End2021-03-312020-12-31
Value100000.04700000.0
Percentage of TemporaryEquityAccretionToRedemptionValueRecognized100.0100.0

feye:TemporaryEquityNetDebtThreshold us-gaap:StatementClassOfStock

feye:TemporaryEquityNetDebtThreshold

us-gaap:ConvertiblePreferredStock


Temporary
Period End2020-12-11
Value350
Percentage of TemporaryEquityNetDebtThreshold100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312012-12-312011-12-31
Value2101000.02559000.02836000.02885000.02791000.02263000.02333000.02525000.03042000.02522000.02585000.02503000.01975000.01918000.01590000.01796000.01796000.02021000.01567000.01830000.01390000.0586000.0930000.020000.020000.00
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


Assets
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-312015-12-312014-12-312013-12-31
Value1007657657606729729759732719978281132
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Assets
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-31
Value22332299633243525370.2040.0113.3060.0162.8960.4490.52526210260300131320334132
Percentage of AssetsFairValueDisclosure22.25.04.516.04.63.34.73.50.00.00.00.50.00.00.00.00.021.50.00.00.04.60.00.0100.0

us-gaap:FairValueInputsLevel2


Assets
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-31
Value7836246275096967047237066917237207157167117127117327677597192692682991680.0
Percentage of AssetsFairValueDisclosure77.895.095.584.095.496.795.396.50.00.00.099.50.00.00.00.00.078.50.00.00.095.40.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value2963000.04401000.05692000.06898000.01988000.02031000.0833000.046000.02000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:CertificatesOfDeposit


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value60000.073000.085000.098000.049000.027000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax2.01.71.51.42.51.3

us-gaap:CorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value2885000.04248000.05407000.06386000.01299000.01950000.0801000.044000.02000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax97.496.595.092.665.396.096.295.7100.0

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value2000.054000.0149000.0337000.0534000.052000.08000.000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.11.22.64.926.92.61.00.00.0

us-gaap:USTreasurySecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value16000.026000.051000.077000.0106000.02000.024000.02000.00
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.50.60.91.15.30.12.94.30.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value416000.060000.071000.080000.03148000.0343000.0812000.02345000.02881000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:CommercialPaper


Available
Period End2020-09-302017-12-31
Value5000.02000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax7.00.1

us-gaap:CorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value285000.041000.046000.074000.03136000.0214000.0495000.01818000.01829000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax68.568.364.892.599.662.461.077.563.5

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value125000.013000.08000.05000.06000.0110000.0252000.0442000.01050000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax30.021.711.36.20.232.131.018.836.4

us-gaap:USTreasurySecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value6000.06000.012000.01000.06000.019000.065000.085000.00
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax1.410.016.91.20.25.58.03.60.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-31
Value781620622503697703723708
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:CertificatesOfDeposit


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value2.9222.6793.1693.8995.3685.118
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.40.40.50.80.80.7

us-gaap:CommercialPaper


Available
Period End2021-03-312020-12-312020-09-30
Value4.9991919
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.63.23.2

us-gaap:CorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-31
Value527433442366474471449450
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis67.569.971.172.968.067.062.163.5

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-31
Value1738985111176178175146
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis22.314.413.722.225.325.424.320.6

us-gaap:USTreasurySecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-31
Value72747121414898112
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis9.212.111.44.25.96.813.615.9

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost


Available
Period End2021-03-312020-12-312020-09-30
Value432285285
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue


Available
Period End2021-03-312020-12-312020-09-30
Value433288289
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost


Available
Period End2021-03-312020-12-312020-09-30
Value349335336
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue


Available
Period End2021-03-312020-12-312020-09-30
Value350336338
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value783624627509696704723706715
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value783624627509696704723706715
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:FairValueInputsLevel2, us-gaap:CertificatesOfDeposit


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value2.9822.7523.2543.9975.4175.1450.0
Percentage of AvailableForSaleSecuritiesDebtSecurities0.40.40.50.80.80.70.0

us-gaap:FairValueInputsLevel2, us-gaap:CommercialPaper


Available
Period End2021-03-312020-12-312020-09-302019-12-312018-12-312017-12-31
Value4.99919190.00.04.987
Percentage of AvailableForSaleSecuritiesDebtSecurities0.63.23.20.00.00.7

us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value529437447372472472450448438
Percentage of AvailableForSaleSecuritiesDebtSecurities67.670.071.373.167.967.162.263.461.2

us-gaap:FairValueInputsLevel2, us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value1738985111176178175145272
Percentage of AvailableForSaleSecuritiesDebtSecurities22.214.313.622.025.425.424.220.638.1

us-gaap:FairValueInputsLevel2, us-gaap:USTreasurySecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value727471214148981120.0
Percentage of AvailableForSaleSecuritiesDebtSecurities9.212.011.34.15.96.813.615.90.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

us-gaap:CertificatesOfDeposit


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value2.9822.7523.2543.9975.4175.1450.0
Percentage of AvailableForSaleSecuritiesDebtSecurities0.40.40.50.80.80.70.0

us-gaap:CommercialPaper


Available
Period End2021-03-312020-12-312020-09-302019-12-312018-12-312017-12-31
Value4.99919190.00.04.987
Percentage of AvailableForSaleSecuritiesDebtSecurities0.63.23.20.00.00.7

us-gaap:CorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value529437447372472472450448438
Percentage of AvailableForSaleSecuritiesDebtSecurities67.670.071.373.167.967.162.263.461.2

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value1738985111176178175145272
Percentage of AvailableForSaleSecuritiesDebtSecurities22.214.313.622.025.425.424.220.638.1

us-gaap:USTreasurySecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value727471214148981120.0
Percentage of AvailableForSaleSecuritiesDebtSecurities9.212.011.34.15.96.813.615.90.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities

feye:RespondSoftware


Business
Period End2020-11-30
Value1.169
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles

feye:RespondSoftware


Business
Period End2020-11-30
Value31
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

feye:RespondSoftware, feye:InProcessTechnology


Business
Period End2020-11-30
Value2.2
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles6.9

feye:RespondSoftware, us-gaap:CustomerRelationships


Business
Period End2020-11-30
Value6.76
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles21.2

feye:RespondSoftware, us-gaap:DevelopedTechnologyRights


Business
Period End2020-11-30
Value22
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles69.9

feye:RespondSoftware, us-gaap:TradeNames


Business
Period End2020-11-30
Value0.62
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles1.9

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

feye:RespondSoftware


Business
Period End2020-11-30
Value177
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet100.0

us-gaap:CapitalizedContractCostNet

us-gaap:CapitalizedContractCostNet


Capitalized
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value1041021009289878694
Percentage of CapitalizedContractCostNet100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostNet us-gaap:BalanceSheetLocation, us-gaap:CapitalizedContractCost

feye:DepositsandOtherCurrentAssets, feye:DeferredCommissions


Capitalized
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value45495042424143
Percentage of CapitalizedContractCostNet44.148.450.246.347.147.849.6

feye:DepositsandOtherLongtermAssets, feye:DeferredCostsofRevenue


Capitalized
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value18212018171819
Percentage of CapitalizedContractCostNet18.221.320.220.419.121.422.7

us-gaap:PrepaidExpensesAndOtherCurrentAssets, feye:DeferredCommissions


Capitalized
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value58535049474543
Percentage of CapitalizedContractCostNet55.951.649.853.652.852.250.5

us-gaap:PrepaidExpensesAndOtherCurrentAssets, feye:DeferredCostsofRevenue


Capitalized
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value16171716181718
Percentage of CapitalizedContractCostNet15.816.716.918.320.020.521.2

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashAndCashEquivalentsFairValueDisclosure


Cash
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-312015-12-312014-12-312014-03-312013-12-31
Value223322996332435253.3062102624132
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:CashAndCashEquivalents

us-gaap:MoneyMarketFunds


Cash
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-312015-12-312014-12-312013-12-31
Value223322996332435250.20821013132
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.06.3100.050.2100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:CashAndCashEquivalents, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:MoneyMarketFunds, us-gaap:FairValueInputsLevel1


Cash
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value22332299633243525370.2040.0110.2080.0162.8960.4490.525262102603001313203341325.893
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.00.00.00.06.30.00.00.00.00.0100.00.00.00.050.20.01338.5100.00.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Cash
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-31
Value22332299633243525370.2040.0113.3060.0162.8960.4490.52526210260300131320334132
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.00.00.00.0100.00.00.00.050.20.01338.5100.0

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance


Common
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value8499788086768274737861535863555960565860474144494395
Percentage of CommonStockCapitalSharesReservedForFutureIssuance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance us-gaap:AwardType

us-gaap:EmployeeStock


Common
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-31
Value5.7823.4254.3164.3165.6563.4285.0113.0153.83.84.8562.9853583.6364.5972.8513.6933483.6933483.23.7925783.7925784.2117612.6833.272663.8775752.5
Percentage of CommonStockCapitalSharesReservedForFutureIssuance6.93.55.55.36.54.56.14.15.24.87.95.56.27.35.16.26.15.66.56.38.96.57.47.85.8

us-gaap:StockCompensationPlan


Common
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value2038404245374235343941354043384041383941433841454021
Percentage of CommonStockCapitalSharesReservedForFutureIssuance24.939.051.352.752.649.451.048.246.550.167.566.468.268.867.968.268.967.767.468.691.193.592.692.293.522.4

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance us-gaap:DebtInstrument

us-gaap:ConvertibleDebt


Common
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-31
Value33333333353535353535151515151515151515150.0
Percentage of CommonStockCapitalSharesReservedForFutureIssuance40.334.143.242.040.946.142.947.848.345.024.628.125.724.027.025.625.026.626.125.10.0

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance us-gaap:PlanName

feye:A2013StockOptionPlan


Common
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-31
Value161415161611131212121211121110.08.6107.1788614151913131611
Percentage of CommonStockCapitalSharesReservedForFutureIssuance19.315.019.820.319.315.516.216.417.316.320.821.721.518.017.914.517.012.625.224.840.432.031.133.225.6

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance us-gaap:StatementClassOfStock

us-gaap:SeriesAPreferredStock


Common
Period End2021-03-312020-12-31
Value2323
Percentage of CommonStockCapitalSharesReservedForFutureIssuance28.023.4

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value910956893892919974935912906934887879886910927
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent


Contract
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
Value322342326329347370364378358353352363
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent us-gaap:ProductOrService

feye:ProductandRelatedSubscriptionandSupport


Contract
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
Value321341325328346369363375358353352363
Percentage of ContractWithCustomerLiabilityNoncurrent99.599.699.699.899.899.799.799.4100.0100.099.9100.0

feye:ProfessionalServices


Contract
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
Value1.4831.2071.2620.6910.8181.0341.1782.0980.0530.0120.3270.172
Percentage of ContractWithCustomerLiabilityNoncurrent0.50.40.40.20.20.30.30.60.00.00.10.0

us-gaap:ConvertibleDebtFairValueDisclosures us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType

us-gaap:ConvertibleDebtFairValueDisclosures

us-gaap:FairValueInputsLevel2, us-gaap:SeniorNotes


Convertible
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302017-12-31
Value100010001000100011001100120011001100851
Percentage of ConvertibleDebtFairValueDisclosures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConvertibleLongTermNotesPayable

us-gaap:ConvertibleLongTermNotesPayable


Convertible
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-31
Value9729609499389048939749629509397897797607517417327237066976880.0
Percentage of ConvertibleLongTermNotesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentCarryingAmount

feye:SeriesAConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-30
Value23232323119119119119119119460460460460460460460460460460
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent

feye:SeriesAConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-30
Value1515151579797979797992929292929292929292
Percentage of DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentRepurchasedFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentRepurchasedFaceAmount

feye:SeriesAConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Debt
Period End2020-09-302020-06-302018-05-312018-05-24
Value9696340340
Percentage of DebtInstrumentRepurchasedFaceAmount100.0100.0100.0100.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

feye:ConvertibleSeniorNotesDue2024, us-gaap:ConvertibleNotesPayable


Debt
Period End2021-03-312020-12-31
Value8692
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet100.0100.0

feye:ConvertibleSeniorNotesdue2024, us-gaap:ConvertibleNotesPayable


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-30
Value9298105111117134140145
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet100.00.00.00.00.00.00.00.0

feye:SeriesBConvertibleSeniorNotes, us-gaap:ConvertibleNotesPayable


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value24293439444963687382869599103108112120
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet28.532.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value5.0622.57185593843151.526309
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value3.3620.879.6692623242291.526153
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger66.433.951.248.325.429.072.9100.049.6

us-gaap:USGovernmentAgenciesDebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value1.71.79.2143525850.0155
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger33.666.148.826.638.230.827.10.050.4

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss


Debt
Period End2020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value4000.054000.0212000.033000.0638000.02000.0909000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Debt
Period End2020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value3000.050000.0200000.09000.0460000.02000.0345000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss75.092.694.327.372.1100.038.0

us-gaap:USGovernmentAgenciesDebtSecurities


Debt
Period End2020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value1000.03000.06000.07000.0178000.00564000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss25.05.62.821.227.90.062.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value3991781719.551258213162663406
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months us-gaap:FinancialInstrument

us-gaap:CommercialPaper


Debt
Period End2021-03-312020-12-312020-09-302017-12-31
Value4.9994.997194.987
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months1.32.811.71.2

us-gaap:CorporateDebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value22492706.05325811734420284
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months56.252.141.163.4100.054.921.163.470.0

us-gaap:USGovernmentAgenciesDebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value14737213.4980.09175137117
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months36.821.012.836.60.042.746.720.728.8

us-gaap:USTreasurySecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value2242580.00.05.041521050.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months5.724.034.40.00.02.432.215.90.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value416000.060000.067000.026000.02936000.0310000.0174000.02343000.01972000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:CommercialPaper


Debt
Period End2020-09-302017-12-31
Value5000.02000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss7.50.1

us-gaap:CorporateDebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value285000.041000.043000.024000.02936000.0205000.035000.01817000.01484000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss68.568.364.292.3100.066.120.177.675.3

us-gaap:USGovernmentAgenciesDebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value125000.013000.07000.02000.00103000.074000.0441000.0486000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss30.021.710.47.70.033.242.518.824.6

us-gaap:USTreasurySecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value6000.06000.012000.0002000.065000.085000.00
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss1.410.017.90.00.00.637.43.60.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value40418019065352298478665715
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition us-gaap:FinancialInstrument

us-gaap:CommercialPaper


Debt
Period End2021-03-312020-12-312020-09-302017-12-31
Value4.9994.997194.987
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition1.22.810.50.7

us-gaap:CorporateDebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value228938032282141264422438
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition56.451.942.150.580.247.555.363.561.2

us-gaap:USGovernmentAgenciesDebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value14839311835117161137272
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition36.821.716.428.010.239.333.820.738.1

us-gaap:USTreasurySecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value224258143439521050.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition5.623.731.021.59.713.111.015.90.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value416000.060000.071000.080000.03148000.0343000.0812000.02345000.02881000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:CommercialPaper


Debt
Period End2020-09-302017-12-31
Value5000.02000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss7.00.1

us-gaap:CorporateDebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value285000.041000.046000.074000.03136000.0214000.0495000.01819000.01829000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss68.568.364.892.599.662.461.077.663.5

us-gaap:USGovernmentAgenciesDebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value125000.013000.08000.05000.06000.0110000.0252000.0441000.01050000.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss30.021.711.36.20.232.131.018.836.4

us-gaap:USTreasurySecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-31
Value6000.06000.012000.01000.06000.019000.065000.085000.00
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss1.410.016.91.20.25.58.03.60.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value5775110771541551131151.689
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDeferredIncome


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1321199743644323104.358
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGoodwillAndIntangibleAssets

us-gaap:DeferredTaxAssetsGoodwillAndIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-31
Value20140.0
Percentage of DeferredTaxAssetsGoodwillAndIntangibleAssets100.0100.00.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value3763533062643902381688841
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value12111613314321682674630
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value265000.0700000.01494000.01325000.0673000.01017000.0802000.0156000.013000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1.81.2380.07.72714126.9060.7520.0
Percentage of DeferredTaxAssetsPropertyPlantAndEquipment100.0100.00.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-31
Value665644
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value7.631141422485945170.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value128.061148.28915169.5496.4712.682
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxLiabilitiesDeferredExpenseReservesAndAccruals


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value4905000.05587000.05447000.05382000.0
Percentage of DeferredTaxLiabilitiesDeferredExpenseReservesAndAccruals100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesFinancingArrangements

us-gaap:DeferredTaxLiabilitiesFinancingArrangements


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2738483161730.0
Percentage of DeferredTaxLiabilitiesFinancingArrangements100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesLeasingArrangements


Deferred
Period End2020-12-312019-12-31
Value7.68614
Percentage of DeferredTaxLiabilitiesLeasingArrangements100.0100.0

us-gaap:DividendsPayableCurrentAndNoncurrent us-gaap:StatementClassOfStock

us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:ConvertiblePreferredStock


Dividends
Period End2021-03-312020-12-31
Value5500000.01000000.0
Percentage of DividendsPayableCurrentAndNoncurrent100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value70958671575956636358545950509612610579736361646647418.271
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2021-03-312020-12-312020-09-302015-12-312014-12-312013-12-31
Value474298307494303198
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestments

feye:PrivateCompany


Equity
Period End2020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value100000.0300000.0600000.00100000.0500000.0800000.01300000.01700000.02100000.0900000.0
Percentage of EquityMethodInvestments100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value377365354343331320278266253241228215186171156140124928170584634121.5160.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2021-03-312020-12-312020-09-30
Value354640
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear


Finite
Period End2021-03-312020-09-30
Value3510
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-312020-09-30
Value5172000.081000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2020-12-312020-09-30
Value9985000.03692000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2021-03-312020-12-312020-09-30
Value9.9852822
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2021-03-312020-12-312020-09-30
Value283528
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsGross


Finite
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-31
Value491491460460460454409409409409409403400400400400400307307308308308300282281
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

feye:Content


Finite
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value1581581581581581581581581581581581581581581581581581281281281281281281281280.0
Percentage of FiniteLivedIntangibleAssetsGross32.332.334.534.534.534.938.838.838.838.838.839.439.639.639.639.639.641.841.841.741.741.742.845.645.60.0

us-gaap:ContractBasedIntangibleAssets


Finite
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value131313131313121212121212121212121213131313131313120.0
Percentage of FiniteLivedIntangibleAssetsGross2.72.72.92.92.92.93.13.13.13.13.13.13.13.13.13.13.14.24.24.54.54.54.64.94.50.0

us-gaap:CustomerRelationships


Finite
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value12212211511511511511111111111111111110910910910910975757575757567670.0
Percentage of FiniteLivedIntangibleAssetsGross24.924.925.125.125.125.527.127.127.127.127.127.627.427.427.427.427.424.524.524.424.424.425.123.824.10.0

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-31
Value1781781531531531481101101101101101031021021021021027878787878706060
Percentage of FiniteLivedIntangibleAssetsGross36.236.233.433.433.432.626.926.926.926.926.925.825.625.625.625.625.625.425.425.425.425.423.421.321.3

us-gaap:NoncompeteAgreements


Finite
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1.41.41.41.41.41.41.41.41.41.41.41.41.41.41.41.41.40.0
Percentage of FiniteLivedIntangibleAssetsGross0.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.0

us-gaap:TradeNames


Finite
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value171717171717151515151515151515151512121212121212120.0
Percentage of FiniteLivedIntangibleAssetsGross3.63.63.83.83.83.83.83.83.83.83.83.93.93.93.93.93.94.04.04.04.04.04.14.44.40.0

us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued

us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued


Income
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value764000.0668000.0554000.0403000.0367000.0398000.0215000.0100000.0
Percentage of IncomeTaxExaminationPenaltiesAndInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryValuationReserves

us-gaap:InventoryValuationReserves


Inventory
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value8900000.05900000.05200000.04700000.03800000.0
Percentage of InventoryValuationReserves100.0100.0100.0100.0100.0

us-gaap:InvestmentsFairValueDisclosure us-gaap:FinancialInstrument

us-gaap:InvestmentsFairValueDisclosure

us-gaap:CommercialPaper


Investments
Period End2020-09-30
Value19
Percentage of InvestmentsFairValueDisclosure100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-03-312020-12-312020-09-30
Value141618
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-03-312020-09-30
Value5995000.04264000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2021-03-312020-12-312020-09-30
Value6.26.76.8
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:DomesticCountry


Operating
Period End2020-12-312019-12-312018-12-312017-12-312015-12-312014-12-312013-12-31
Value431437513631542376127
Percentage of OperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCountry


Operating
Period End2020-12-31
Value52
Percentage of OperatingLossCarryforwards12.3

us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-312018-12-312017-12-312015-12-312014-12-312013-12-31
Value473521583719675244136
Percentage of OperatingLossCarryforwards109.8119.2113.7113.9124.465.0107.0

us-gaap:PurchaseObligation

us-gaap:PurchaseObligation


Purchase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-31
Value4.26.03.54.14.35.07.78.611121111121210151316182121232716163.3
Percentage of PurchaseObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PurchaseObligation us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

feye:SoftwareandServices


Purchase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-31
Value1516181816179.313181312122422232835282620159.15.5
Percentage of PurchaseObligation376.2270.0537.1439.0374.4354.0120.8151.2167.9109.6113.2107.8195.9177.2152.3215.4212.4150.8119.396.865.933.733.7

us-gaap:RestructuringReserve

us-gaap:RestructuringReserve


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.1831.0481.1076.7824.2610.6340.8641.151.10.80.90.9351.3722.13.467120.9140.2170.2360.3080.520.765
Percentage of RestructuringReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringReserve us-gaap:RestructuringCostAndReserve

feye:EmployeeSeveranceandRelatedCosts


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.0170.570.586.3263.950.164
Percentage of RestructuringReserve9.354.452.493.392.725.9

us-gaap:EmployeeSeverance


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value0.570.66.30.50.1640.2140.00.00.00.1551.2219.6330.7280.00.00.00.00.00.3030.0
Percentage of RestructuringReserve54.454.292.911.725.924.80.00.00.07.435.276.979.60.00.00.00.00.00.00.0

us-gaap:FacilityClosing


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value0.1660.4780.5270.4560.3110.470.651.151.1480.830.8640.9351.3721.8982.2462.8860.1860.2170.2360.3080.520.7650.2980.0
Percentage of RestructuringReserve90.745.647.66.77.374.175.2100.0104.4103.896.0100.0100.090.464.823.120.4100.0100.0100.0100.0100.00.00.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-03-312020-12-312020-09-302019-12-312018-12-31
Value4852181526
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligationPercentage

us-gaap:RevenueRemainingPerformanceObligationPercentage


Revenue
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-30
Value56.056.045.01.01.01.01.01.01.01.0
Percentage of RevenueRemainingPerformanceObligationPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber


Share
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302014-12-31
Value282021222421252021222520212419232220138.341
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue


Share
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-31
Value17.8915.3515.3415.4915.1116.0716.2615.5315.6315.7816.217.0917.6717.822.2323.6825.3733.6839.57
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber


Share
Period End2021-03-312020-12-312020-09-30
Value1965000.02076000.02207000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice


Share
Period End2021-03-312020-12-312020-09-30
Value12.312.4312.06
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue


Share
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value44602022194527273127342838374065881492845184744454991444103677110.012
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding


Sharebased
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302014-12-31
Value556470267276263358429328364353425284334315236342365415426263
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1


Sharebased
Period End2021-03-312020-12-312020-09-30
Value233113
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0100.0100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

us-gaap:TaxCreditCarryforwardAmount

us-gaap:DomesticCountry, us-gaap:Research


Tax
Period End2020-12-312019-12-312018-12-312017-12-312015-12-312014-12-312013-12-31
Value4639302416104.2
Percentage of TaxCreditCarryforwardAmount100.0100.0100.0100.0100.0100.0100.0

us-gaap:StateAndLocalJurisdiction, us-gaap:Research


Tax
Period End2020-12-312019-12-312018-12-312017-12-312015-12-312014-12-312013-12-31
Value25211815106.92.9
Percentage of TaxCreditCarryforwardAmount55.255.159.763.664.867.669.0

us-gaap:TemporaryEquityCarryingAmountAttributableToParent

us-gaap:TemporaryEquityCarryingAmountAttributableToParent


Temporary
Period End2021-03-312020-12-31
Value405401
Percentage of TemporaryEquityCarryingAmountAttributableToParent100.0100.0

us-gaap:TemporaryEquityCarryingAmountAttributableToParent us-gaap:StatementClassOfStock

us-gaap:ConvertiblePreferredStock


Temporary
Period End2021-03-312020-12-31
Value405401
Percentage of TemporaryEquityCarryingAmountAttributableToParent100.0100.0

us-gaap:TemporaryEquitySharesIssued

us-gaap:TemporaryEquitySharesIssued


Temporary
Period End2021-03-312020-12-312012-12-31
Value0.40.465
Percentage of TemporaryEquitySharesIssued100.0100.0100.0

us-gaap:TemporaryEquitySharesIssued us-gaap:StatementClassOfStock

us-gaap:ConvertiblePreferredStock


Temporary
Period End2020-12-31
Value0.4
Percentage of TemporaryEquitySharesIssued100.0

us-gaap:TemporaryEquitySharesOutstanding

us-gaap:TemporaryEquitySharesOutstanding


Temporary
Period End2021-03-312020-12-312012-12-31
Value0.40.464
Percentage of TemporaryEquitySharesOutstanding100.0100.0100.0

us-gaap:TreasuryStockShares

us-gaap:TreasuryStockShares


Treasury
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-31
Value1778000.01778000.01778000.01778000.03333000.03333000.03333000.03333000.03333000.03333000.03333000.03333000.03333000.03333000.03333000.03333000.03333000.03333000.03333000.03333000.00
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate


Unrecognized
Period End2020-12-31
Value2000000.0
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:ValuationAllowancesAndReservesBalance


Valuation
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2559000.02263000.02525000.02503000.01590000.02021000.0
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept


us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
(None,)
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amountus-gaap: Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities
COGS Ratio
us-gaap:ProductOrService
(None,)
C O G S  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:CostOfGoodsAndServicesSold
us-gaap:ProductOrService
(None,)
Cost Of Goods And Services Soldus-gaap: Product Or Service
us-gaap:InterestExpenseDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
(None, 'us-gaap:ConvertibleNotesPayable')
Interest Expense Debtus-gaap: Debt Instrument, us-gaap: Longterm Debt Type
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:ShortTermInvestments
us-gaap:BalanceSheetLocation, us-gaap:FinancialInstrument
('us-gaap:ShortTermInvestments', None)
Short Term Investmentsus-gaap: Balance Sheet Location, us-gaap: Financial Instrument
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical
(None,)
Property Plant And Equipment Netus-gaap: Statement Geographical
us-gaap:ContractWithCustomerLiabilityCurrent
us-gaap:ProductOrService
(None,)
Contract With Customer Liability Currentus-gaap: Product Or Service
us-gaap:LongTermDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
(None, 'us-gaap:ConvertibleNotesPayable')
Long Term Debtus-gaap: Debt Instrument, us-gaap: Longterm Debt Type
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components