MIME


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

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

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

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation
us-gaap:PlanName

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfRevenue

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaid

us-gaap:InterestExpense
us-gaap:CreditFacility
us-gaap:InterestExpenseDebt

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingExpenses

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:ProfitLoss

us-gaap:ResearchAndDevelopmentExpense

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical

us-gaap:Revenues

us-gaap:SellingAndMarketingExpense

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:OtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:StatementGeographical

us-gaap:Goodwill
us-gaap:BusinessAcquisition

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent
us-gaap:CreditFacility

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:LongTermDebtNoncurrent
us-gaap:CreditFacility

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:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:AmortizationOfFinancingCosts

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:AwardType, us-gaap:SubsequentEventType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:DeferredTaxLiabilities

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

mime:AmortizationOfDeferredContractCosts

mime:AmortizationOfOperatingLeaseRightOfUseAssets

mime:DiscreteTaxBenefit

mime:FinanceLeaseCost

mime:ForeignCurrencyTransactionGainLossBeforeTaxAndOther

mime:IncreaseDecreaseInOperatingLeaseLiabilities

mime:ProceedsReceivableFromIssuanceOfOrdinaryShares

mime:RestructuringActivitiesReductionInWorkforcePercentage
us-gaap:SubsequentEventType

mime:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageSharePriceForOptionsGranted
us-gaap:AwardType
us-gaap:AwardType, us-gaap:PlanName
mime:ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseInNumberOfSharesReservedAndAvailableForIssuancePercentage
us-gaap:StatementEquityComponents
mime:TaxWithholdingOnEmployeeStockPurchasePlanAndVestingOfRestrictedStockUnitsShares

mime:TaxWithholdingOnEmployeeStockPurchasePlanAndVestingOfRestrictedStockUnitsValue
us-gaap:StatementEquityComponents

mime:UnpaidPurchasesOfPropertyEquipmentAndCapitalizedSoftwareLicenses

us-gaap:CapitalizedComputerSoftwareAdditions

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:LineOfCreditFacility
us-gaap:DebtInstrumentInterestRateDuringPeriod
us-gaap:LineOfCreditFacility, us-gaap:VariableRate

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:ExcessTaxBenefitFromShareBasedCompensationFinancingActivities

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:ForeignCurrencyTransactionGainLossUnrealized

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InvestmentIncomeInterest

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
us-gaap:RestructuringCostAndReserve
us-gaap:PaymentsForRestructuring

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:StatementGeographical, us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired
us-gaap:StatementGeographical, us-gaap:BusinessAcquisition

us-gaap:ProceedsFromIssuanceOfCommonStock
us-gaap:PlanName
us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:RepaymentsOfDebt

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
us-gaap:AwardType, us-gaap:SubsequentEventType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:ShortTermLeaseCost
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:VariableLeaseCost

dei:EntityPublicFloat

mime:AccruedExpensesAndOtherCurrentLiabilities
us-gaap:NatureOfExpense
mime:CapitalizedComputerSoftwareAndOtherNet

mime:DeferredTaxAssetsLeaseLiability

mime:DeferredTaxLiabilitiesCapitalizedCommissions

mime:DeferredTaxLiabilitiesRightOfUseAsset
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
mime:FiniteLivedIntangibleAssetAmortizationExpenseAfterYearFour

mime:LesseeOperatingAndFinanceLeaseLeaseNotYetCommencedValue

mime:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour

mime:PreTaxRestructuringChargesNetOfOtherAdjustments

mime:UnremittedEarningsOfForeignSubsidiariesRelatedToNonPaymentOfWithholdingTaxes

mime:UnremittedEarningsOfForeignSubsidiariesRelatedToPaymentOfWithholdingTaxes
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CapitalizedContractCostNetCurrent

us-gaap:CapitalizedContractCostNetNoncurrent

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:ContractWithCustomerLiabilityNoncurrent
us-gaap:CreditFacility
us-gaap:DebtInstrumentCarryingAmount
us-gaap:CreditFacility, us-gaap:ShortTermDebtType
us-gaap:DebtInstrument
us-gaap:BalanceSheetLocation, us-gaap:CreditFacility
us-gaap:DeferredFinanceCostsNet
us-gaap:CreditFacility

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings

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

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LiabilityForUncertainTaxPositionsCurrent
us-gaap:BusinessAcquisition, us-gaap:CreditFacility, us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:CreditFacility
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:CreditFacility
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:CreditFacility
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:CreditFacility
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName
us-gaap:OperatingLossCarryforwards
us-gaap:StatementScenario, us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

us-gaap:PrepaidExpenseCurrent
us-gaap:SubsequentEventType
us-gaap:RestructuringAndRelatedCostExpectedCost1
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringReserve

us-gaap:RestructuringReserveCurrent

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligationPercentage

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested
us-gaap:AwardType

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

us-gaap:UndistributedEarningsOfForeignSubsidiaries

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Income Tax Expense Benefit
Balance Sheet
Intangible Assets Net Excluding Goodwill
Assets
Property Plant And Equipment Net
Current Assets
Other Assets Current
NonCurrent Assets
Other Assets Noncurrent
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Accrued Income Taxes Current
Noncurrent Liabilities
Other Liabilities Noncurrent
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Receivable
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Proceeds From Issuance Of Long Term Debt
Shares
Weighted Average Number Of Shares Outstanding Basic
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Accumulated Amortization

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:CommonStockValue █▇▇▆▅▅▅▄▄▃▂▂▂▁0.7880.7750.7720.7660.7590.7540.750.7430.740.7340.7240.7210.7150.707NANANA0.671NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock█▇▇▆▆▅▅▄▄▃▂▂▂▁65.66264.56264.34763.84363.26962.79262.48661.95361.72961.15860.3560.04359.658.95NANANA55.902NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 66.934NA66.02365.58164.67664.38263.99661.82961.44460.73362.53759.859.17558.26457.50557.02756.29255.37554.94958.51357.655
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 65.198NA63.98763.51763.01962.63662.18961.82961.44460.73360.14159.859.17558.26457.50557.02756.29255.37554.94954.63654.287
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStock0.072NA0.0820.0850.085NANA0.0830.083NA0.0690.064NANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOption2.554NA2.3733.0724.406NA3.756.8486.946NA0.7927.1647.27NA7.2997.4257.803NANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:RestrictedStockUnitsRSU0.131NA0.1010.1030.52NA0.1381.1951.158NANA0.4190.318NA0.0340.0440.035NANANANA
us-gaap:EarningsPerShareBasic █▆██▅▅▄▄▂▃▄▃▂▁▂▃▃▂▂▄▄0.150.089999999999999970.170.160.050.040.0-0.01-0.07-0.030.01-0.03-0.06-0.11-0.05-0.02-0.03-0.05-0.060.010.0
us-gaap:EarningsPerShareDiluted █▆██▅▅▄▄▂▃▄▃▂▁▃▃▃▃▂▄▄0.150.080000000000000020.160.150.050.040.0-0.01-0.07-0.030.01-0.03-0.06-0.11-0.05-0.02-0.03-0.05-0.060.010.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
 TTM Greenblatt ROC _ _█▆█▇▄▅▄▃▁▃▄▃▂▁▂▃▂▂11.3297.65810.8210.0872.6945.1251.629-0.018-4.4380.2071.572-0.909-2.089-4.206-1.129-0.508-1.111-1.969NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:AllocatedShareBasedCompensationExpense █▆▆▆▆▄▄▄▅▃▃▃▂▁▁▁▁17.38812.58413.79213.61913.6539.8719.7019.93810.0347.4687.1966.1095.1813.0363.1422.912.646NANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▆▃█▅▄▁▃▃▂▃▂▂▁▁▂▂▂15.250.60926.56412.1417.038-7.2143.4050.064-2.4472.057-3.271-1.721-5.575-5.314-0.533-1.926-1.546NANANANA
us-gaap:CostOfRevenue █▇▇▇▆▆▆▅▅▅▄▄▃▃▂▁▁33.54931.92631.57229.74228.46929.32628.45526.13425.46724.70223.25821.93820.97620.17617.72816.54315.252NANANANA
us-gaap:GeneralAndAdministrativeExpense ██▇▇█▇▇█▇▁▆▆▆▅▅▄▄17.92317.95416.64916.58317.16816.59116.5216.75615.4471.013.62512.44812.21410.369.4788.6148.537NANANANA
us-gaap:GrossProfit █▇▇▇▆▆▆▅▅▄▄▄▃▃▃▂▂▂▁▁▁109.0101.96898.06492.95186.70784.89181.70377.22373.76467.49164.35360.23157.42853.22549.54446.52342.90638.95535.18931.98430.121
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▇▅█▇▅▅▄▃▂▂▄▃▂▁▃▃▃10.4375.11411.94410.6323.7513.5851.157-0.803-3.78-1.920.969-1.436-2.613-5.572-1.748-0.918-1.443NANANANA
us-gaap:IncomeTaxExpenseBenefit ▅▁█▆▆█▇▄▄▄▆▆▇▇▇▅▅0.365-0.6541.1550.5820.6131.060.9510.1180.230.010.5110.6220.8580.9820.8450.4210.457NANANANA
us-gaap:IncomeTaxesPaid ▂▄▂▅▁▆▂▅▁█▂▅▁▆▁▇▁0.2250.5970.2650.8810.0821.1890.240.9870.0731.6360.340.9970.0371.1020.0031.3350.105NANANANA
us-gaap:InterestExpense ▃▃▃▄▄▄▅▅▆██▇▃▂▁▁▁0.5360.5530.5780.790.8830.9261.1061.1951.281.8841.9611.5680.5270.4420.0560.0690.031NANANANA
 us-gaap:InterestExpenseDebt us-gaap:CreditFacility mime:SeniorSecuredRevolvingCreditFacility▇▇▇▇▇▁███▃█▇0.40.40.50.70.7-3.09611.01.01.1-1.8971.10.8NANANANANANANANANA
us-gaap:InterestPaidNet ▂▂▂▃▃▃▄▄▄█▂▃▂▂▁▁▁0.4260.440.4620.9380.7630.871.0951.0741.0752.7310.5130.8370.5170.4370.0730.060.021NANANANA
us-gaap:NetIncomeLoss █▆██▅▅▄▃▂▃▄▃▂▁▃▃▃▃▂▄▄10.0725.76810.78910.053.1382.5250.206-0.921-4.01-1.930.458-2.058-3.471-6.554-2.593-1.339-1.9-2.618-3.370.3030.244
us-gaap:NonoperatingIncomeExpense ▄▁█▇█▃▅▄▇▂▅▅▅▃▅▅▅-0.892-2.5441.1240.5451.057-1.54-0.472-0.7850.658-2.127-0.603-0.527-0.524-1.366-0.619-0.41-0.332NANANANA
us-gaap:OperatingExpenses █▇▆▆▆▅▅▅▅▃▃▃▂▂▁97.67194.3187.24482.86484.01379.76680.07477.24178.20267.28462.78161.1459.51757.43150.673NANANANANANA
us-gaap:OperatingIncomeLoss █▆█▇▄▅▄▃▁▃▄▃▂▁▂▃▂▂▂▂▂11.3297.65810.8210.0872.6945.1251.629-0.018-4.4380.2071.572-0.909-2.089-4.206-1.129-0.508-1.111-1.969-3.03-2.427-2.947
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▅▂█▄▅▁▅▄▄▅▃▄▃5.178-5.15915.7752.0913.9-9.7393.221.0221.5333.956-3.7170.304-2.168NANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▅▂█▄▅▁▅▄▄▅▃▄▃▄▄▄▄5.178-5.15915.7752.0913.9-9.7393.1990.9851.5633.987-3.7290.337-2.1041.242.06-0.5870.354NANANANA
us-gaap:ProfitLoss █▆██▄▄▃▂▁10.0725.76810.78910.053.1382.5250.206-0.921-4.01NANANANANANANANANANANANA
us-gaap:ResearchAndDevelopmentExpense █▇▆▅▅▅▅▄▄▃▃▃▃▂▂▁▁31.48627.00125.40822.28722.80221.28420.80119.3219.38515.98914.69314.15713.112.18510.0058.2627.921NANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇▇▇▆▆▆▅▅▅▄▄▄▃▃▂▂▂▁▁▁142.549133.894129.636122.693115.176114.217110.158103.35799.23192.19387.61182.16978.40473.40167.27263.06658.15852.40948.33344.36141.46
us-gaap:Revenues █▇▇▇▆▆▆▅▅▅▄▄▄▃▃▂▂▂▁▁▁142.549133.894129.636122.693115.176114.217110.158103.35799.23192.19387.61182.16978.40473.40167.27263.06658.15852.40948.33344.36141.46
us-gaap:SellingAndMarketingExpense █▇▇▇▇▆▆▆▆▄▃▃▃▃▂▂▁48.26246.09145.18743.99444.04341.89142.75341.16543.3735.82334.46334.70534.20332.34231.1930.15527.559NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:Assets ██▇▆▅▅▅▅▅▃▃▃▁▁965.786934.707904.886824.804746.599729.834714.631678.717662.934554.287542.877510.788384.551358.398NANANA205.352NANANA
us-gaap:Liabilities ███▇▆▆▆▆▆▄▄▄▁▁557.102573.838558.967530.553488.28497.779489.983476.097471.826380.652390.02366.04247.498256.706NANANA123.36NANANA
us-gaap:LiabilitiesAndStockholdersEquity ██▇▆▅▅▅▅▅▃▃▃▁▁965.786934.707904.886824.804746.599729.834714.631678.717662.934554.287542.877510.788384.551358.398NANANA205.352NANANA
us-gaap:StockholdersEquity █▇▇▅▅▄▄▃▃▃▂▂▂▁408.684360.869345.919294.251258.319232.055224.648202.62191.108173.635152.857144.748137.053101.692NANANA81.992NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:AssetsCurrent █▇▆▄▄▃▃▃▃▃▂▁▁▁478.38443.425402.513344.638313.329298.895294.855296.8289.755288.481242.271222.885224.995217.904NANANA166.078NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue █▇▆▅▄▄▄▄▄▃▃▂▂▁338.433292.949270.897230.708198.541173.958189.863191.172174.812137.576135.684118.881107.5378.339NANANA51.319NANANA
us-gaap:AccountsReceivableNetCurrent ▆█▆▄▅▆▄▃▂▄▂▁▁▂101.217114.2897.6481.14386.12897.65980.16870.17268.49580.95364.58359.96656.67765.392NANANA44.358NANANA
us-gaap:OtherAssetsCurrent NA1.793NANANA1.982NANANA1.85NANANA1.183NANANA0.857NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▆▅▅▅▃▃▂▄▃█▂▁▂▃21.77820.03119.20519.79916.65816.14514.11917.94815.62125.87114.01712.28213.315.302NANANA10.054NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:PropertyPlantAndEquipmentGross NA207.888NANANA173.828NANANA173.379NANANA189.849NANANA77.51NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType mime:AssetsHeldUnderFinanceLeasesNA4.001NANANA4.714NANANA4.754NANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ComputerEquipmentNA166.524NANANA131.92NANANA112.277NANANA102.821NANANA69.996NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:FurnitureAndFixturesNA5.573NANANA5.793NANANA4.59NANANA4.187NANANA2.232NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNA33.452NANANA34.031NANANA8.166NANANA6.504NANANA5.015NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:OfficeEquipmentNA2.339NANANA2.084NANANA1.345NANANA1.172NANANA0.267NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NA114.997NANANA88.65NANANA79.177NANANA66.027NANANA45.501NANANA
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType mime:AssetsHeldUnderFinanceLeasesNA3.694NANANA3.407NANANA2.228NANANANANANANANANANANA
us-gaap:AmortizationOfIntangibleAssets ████▆▆▆▄▄▄▃▃▁2.42.42.52.42.12.11.91.51.51.51.31.20.8NANANANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ▃▃▄▃▃▃▃▂▁▄█▇▆▆92.85892.89194.09986.88585.9885.17886.05374.09565.65594.202145.237131.608124.117123.822NANANA32.009NANANA
us-gaap:Goodwill ████▇▇▆▅▅▅▅▅▁▁176.908173.952178.645169.812154.201150.525130.677110.467108.722107.575100.611103.0625.6025.631NANANA5.363NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▇███▇▇▆▅▅▅▅▅▁▁41.44743.19345.82945.1339.85238.39434.79931.57229.15430.62327.9329.5218.5579.819NANANA1.59NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▇███▇▇▆▅▅▅▅▅▁▁41.44743.19345.82945.1339.85238.39434.79931.57229.15430.62327.9329.5218.0339.262NANANA1.59NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▅▆██▁▃▅▆█122.739128.063134.051134.201111.176116.564125.076127.254133.35NANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▃▃▃▃▃▄█▇▆▅▂▂▁▁2.6013.0973.5133.3633.4373.6147.6386.6526.1955.1562.432.3931.4631.222NANANA0.312NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:AccountsPayableCurrent ▆▅▅▅▆█▇▆▃▄▃▃▁▂12.57610.48710.6910.16912.11314.90712.7512.5747.4119.4577.2897.2364.536.052NANANA3.558NANANA
us-gaap:AccruedIncomeTaxesCurrent NA7.587NANANA5.809NANANA5.305NANANA4.029NANANA3.49NANANA
us-gaap:ContractWithCustomerLiabilityCurrent ██▆▅▅▅▅▃▄▄▂▁▁▁232.645237.749210.295189.956190.519194.151179.535161.686162.814163.102137.018124.894120.612123.057NANANANANANANA
us-gaap:LiabilitiesCurrent ██▇▆▆▆▅▄▄▃▂▂▁▁337.073345.772321.502290.821285.353288.675269.319252.418241.142221.771188.509173.661159.441164.112NANANA110.388NANANA
us-gaap:LongTermDebtCurrent █▇▇▆▅▅▄▄▃▂▂▁9.7229.098.4597.8287.2026.5735.9475.3214.6954.0593.4382.814NANANANANANANANANA
us-gaap:OperatingLeaseLiabilityCurrent ▇▇▇█▄▄▃▃▁33.23733.44733.39834.51530.31830.37929.87329.63227.846NANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent NA14.597NANANA12.333NANANA15.087NANANA11.252NANANA5.562NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:LongTermDebtNoncurrent ▅▆▇█▁▂▃▄▄▅▅▆92.23894.67197.10499.53284.45686.25888.05689.85691.65592.79793.98295.154NANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▃▄▄▅▃▁▁▂▁█▂▃▁▂7.5278.1439.37310.0567.0234.3863.7714.7424.26815.5816.0587.3424.34.954NANANA1.538NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▄▅▇▇▁▃▆▇█107.669112.316118.522118.77398.926105.321115.559116.624121.33NANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo ▁██▆24.02331.79531.52429.685NANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▃█▇▁22.09523.14923.00521.775NANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ▁██▆17.55821.73621.6720.377NANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NA17.437NANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NA32.281NANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:StockholdersEquity █▇▇▅▅▄▄▃▃▃▂▂▂▁408.684360.869345.919294.251258.319232.055224.648202.62191.108173.635152.857144.748137.053101.692NANANA81.992NANANA
us-gaap:CommonStockValue █▇▇▆▅▅▅▄▄▃▂▂▂▁0.7880.7750.7720.7660.7590.7540.750.7430.740.7340.7240.7210.7150.707NANANA0.671NANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▇▇▆▅▄▄▃▃▃▂▂▁▁440.801408.249393.911368.813345.029325.808311.191292.575281.13263.388244.677233.302223.891212.839NANANA183.752NANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▆▅▄▄▃▃▃▄▄▄▄▁-43.843-53.915-59.683-70.472-80.522-83.66-86.185-86.391-85.47-83.632-81.702-82.16-80.102-106.507NANANA-94.017NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax █▆█▃▂▁▄▃▃▂▁▂▂▃10.9385.7610.919-4.856-6.947-10.847-1.108-4.307-5.292-6.855-10.842-7.115-7.451-5.347NANANA-8.414NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▅▆▆▆▄▄▄▄▂▂▂▁17.39612.56613.83313.68413.6669.8339.7329.90810.0157.487.1836.115.156NANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▇▆▆▅▄▃▅▃▃▂▃▃▂▁▂40.731.70834.97831.04329.30525.04819.28317.68328.52418.32818.80412.46916.63414.78712.6537.33411.638NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▇▆▇▅▅▇█▆▇▁█▆▆█▇-9.095-7.592-10.761-26.443-10.771-37.101-30.5470.2951.814-26.592-3.492-100.6659.425-18.868-16.7278.337-7.761NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▁▂▃▁▁▂▁▂▂▁█▁▁▁▁▁12.606-0.3689.21825.4683.9633.3677.3860.0386.9429.4132.5299.7645.2885.6832.3042.2572.912NANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect █▅▇▆▆▁▃▅▇▃▅▄▆▃▃▅▄45.48422.05240.18932.16724.583-15.905-1.30916.3637.2361.89216.80311.35129.1912.349-0.93817.9397.67NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:AmortizationOfFinancingCosts ▃▃▃▃▃▃▃▃█▁▃0.1110.1110.1150.1150.1140.1150.1150.1140.1570.0970.116NANANANANANANANANANA
us-gaap:DeferredIncomeTaxExpenseBenefit 0.117NANANA-0.178NANANANANANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ███▇▇▇▆▅▅▆▆▅▅▄▂▂▁9.8769.8019.959.4958.8528.8348.4317.5387.4427.917.7637.3546.9266.3824.7194.253.609NANANANA
us-gaap:IncreaseDecreaseInAccountsPayable █▃▂▃▁▆▃▆▂▃▃▆▃▂▂▃▅4.368-0.039-1.129-0.464-2.0372.76-0.6212.884-0.808-0.367-0.5112.8630.108-0.864-0.7330.2171.276NANANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▁▇▆▂▁█▅▄▁▇▅▄▃▆▅▅▃-13.93516.76213.074-6.893-12.40521.7547.4683.172-11.92715.8055.4233.622-6.07910.6697.1324.748-4.429NANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▇▆▆▅▄▃▅▃▃▂▃▃▂▁▂40.731.70834.97831.04329.30525.04819.28317.68328.52418.32818.80412.46916.63414.78712.6537.33411.638NANANANA
us-gaap:NetIncomeLoss █▆██▅▅▄▃▂▃▄▃▂▁▃▃▃▃▂▄▄10.0725.76810.78910.053.1382.5250.206-0.921-4.01-1.930.458-2.058-3.471-6.554-2.593-1.339-1.9-2.618-3.370.3030.244
us-gaap:ProfitLoss █▆██▄▄▃▂▁10.0725.76810.78910.053.1382.5250.206-0.921-4.01NANANANANANANANANANANANA
us-gaap:ShareBasedCompensation █▆▆▆▆▄▄▄▅▃▃▃▂▁▁▁▁17.38812.58413.79213.61913.6539.8719.7019.93810.0347.4687.1966.1095.1813.0363.1422.912.646NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▇▆▇▅▅▇█▆▇▁█▆▆█▇-9.095-7.592-10.761-26.443-10.771-37.101-30.5470.2951.814-26.592-3.492-100.6659.425-18.868-16.7278.337-7.761NANANANA
us-gaap:PaymentsToAcquireProductiveAssets ▃▃▄▄▄▅█▆▃▁▃▃▂▅▃▁▃9.0957.66610.7619.39910.77112.95117.41713.7059.1614.9168.0368.2687.57512.9098.1865.6737.73NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▁▂▃▁▁▂▁▂▂▁█▁▁▁▁▁12.606-0.3689.21825.4683.9633.3677.3860.0386.9429.4132.5299.7645.2885.6832.3042.2572.912NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value788000.0775000.0772000.0766000.0759000.0754000.0750000.0743000.0740000.0734000.0724000.0721000.0715000.0707000.0671000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.20.20.3

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value6564646363626261616160605958555432
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value6666656464636161606259595857575655545857
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value6563636362626161606059595857575655545454
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStock


Antidilutive
Period End2021-06-302020-12-312020-09-302020-06-302019-09-302019-06-302018-12-312018-09-30
Value72000.082000.085000.085000.083000.083000.069000.064000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeStockOption


Antidilutive
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-30
Value2554000.02373000.03072000.04406000.03750000.06848000.06946000.0792000.07164000.07270000.07299000.07425000.07803000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount3547.22893.93614.15183.50.08250.68368.71147.811193.80.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


Antidilutive
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-09-302018-06-302017-12-312017-09-302017-06-30
Value131000.0101000.0103000.0520000.0138000.01195000.01158000.0419000.0318000.034000.044000.035000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount181.9123.2121.2611.80.01439.81395.2654.70.00.00.00.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.150.090.170.160.050.040-0.01-0.07-0.030.01-0.03-0.06-0.11-0.05-0.02-0.03-0.05-0.060.010
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.150.080.160.150.050.040-0.01-0.07-0.030.01-0.03-0.06-0.11-0.05-0.02-0.03-0.05-0.060.010
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value17121313139.8719.7019.938107.4687.1966.1095.1813.0363.1422.912.646
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.20.010.611.111.98.68.89.610.18.18.27.46.64.14.74.64.5

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.5071.0841.2471.1631.1250.9010.8510.9060.7870.4270.4330.420.4040.2670.3440.2360.206
Percentage of AllocatedShareBasedCompensationExpense8.78.69.08.58.29.18.89.17.85.76.06.97.88.810.98.17.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.01.00.91.00.80.80.90.80.50.50.50.50.40.50.40.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CostOfSales0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4.3353.854.0364.114.2073.1283.2062.8082.9163.2883.1582.1531.6160.9480.940.9510.81
Percentage of AllocatedShareBasedCompensationExpense24.930.629.330.230.831.733.028.329.144.043.935.231.231.229.932.730.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.00.03.13.33.72.72.92.72.93.63.62.62.11.31.41.51.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value6.4623.8763.7913.8953.8842.872.7882.6932.5491.7381.561.5711.330.6090.6630.6010.682
Percentage of AllocatedShareBasedCompensationExpense37.230.827.528.628.429.128.727.125.423.321.725.725.720.121.120.725.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.50.02.93.23.42.52.52.62.61.91.81.91.70.81.01.01.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ResearchAndDevelopmentExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingAndMarketingExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value5.0843.7744.7184.4514.4372.9722.8563.5313.7822.0152.0451.9651.8311.2121.1951.1220.948
Percentage of AllocatedShareBasedCompensationExpense29.230.034.232.732.530.129.435.537.727.028.432.235.339.938.038.635.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.60.03.63.63.92.62.63.43.82.22.32.42.31.71.81.81.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingAndMarketingExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:PlanName

mime:MimecastLimitedTwoThousandAndFifteenEmployeeSharePurchasePlan


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.50.60.60.70.50.40.50.50.40.40.40.30.2
Percentage of AllocatedShareBasedCompensationExpense2.94.84.45.13.74.15.25.04.05.45.64.93.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.00.50.60.40.40.50.50.40.40.50.40.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mime:MimecastLimitedTwoThousandAndFifteenEmployeeSharePurchasePlan0.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value150.60926127.038-7.2143.4050.064-2.4472.057-3.271-1.721-5.575-5.314-0.533-1.926-1.546
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.70.020.59.96.1-6.33.10.1-2.52.2-3.7-2.1-7.1-7.2-0.8-3.1-2.7

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3331312928292826252423212020171615
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.50.024.424.224.725.725.825.325.726.826.526.726.827.526.426.226.2

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1717161617161616151.0131212109.4788.6148.537
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.60.012.813.514.914.515.016.215.61.115.615.115.614.114.113.714.7

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value10910198928684817773676460575349464238353130
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax76.50.075.675.875.374.374.274.774.373.273.573.373.272.573.673.873.874.372.872.172.7

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value105.11411103.7513.5851.157-0.803-3.78-1.920.969-1.436-2.613-5.572-1.748-0.918-1.443
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.30.09.28.73.33.11.1-0.8-3.8-2.11.1-1.7-3.3-7.6-2.6-1.5-2.5

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value365000.0-654000.01155000.0582000.0613000.01060000.0951000.0118000.0230000.010000.0511000.0622000.0858000.0982000.0845000.0421000.0457000.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.00.90.50.50.90.90.10.20.00.60.81.11.31.30.70.8

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value225000.0597000.0265000.0881000.082000.01189000.0240000.0987000.073000.01636000.0340000.0997000.037000.01102000.03000.01335000.0105000.0
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.00.20.70.11.00.21.00.11.80.41.20.01.50.02.10.2

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value536000.0553000.0578000.0790000.0883000.0926000.01106000.01195000.01280000.01884000.01961000.01568000.0527000.0442000.056000.069000.031000.0
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.00.40.60.80.81.01.21.32.02.21.90.70.60.10.10.1

Interest Expense Debt

us-gaap:InterestExpenseDebt us-gaap:CreditFacility

us-gaap:InterestExpenseDebt

mime:SeniorSecuredRevolvingCreditFacility


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value400000.0400000.0500000.0700000.0700000.0-3096100.01000000.01000000.01100000.0-1897000.01100000.0800000.0
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.00.40.60.6-2.70.91.01.1-2.11.31.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mime:SeniorSecuredRevolvingCreditFacility0.00.00.00.00.00.00.00.00.00.00.00.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value426000.0440000.0462000.0938000.0763000.0870000.01095000.01074000.01075000.02731000.0513000.0837000.0517000.0437000.073000.060000.021000.0
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.00.40.80.70.81.01.01.13.00.61.00.70.60.10.10.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value105.76810103.1382.5250.206-0.921-4.01-1.930.458-2.058-3.471-6.554-2.593-1.339-1.9-2.618-3.370.3030.244
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.10.08.38.22.72.20.2-0.9-4.0-2.10.5-2.5-4.4-8.9-3.9-2.1-3.3-5.0-7.00.70.6

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value105.76810103.1382.5250.206-0.921-4.01-1.930.458-2.058-3.471
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.10.08.38.22.72.20.2-0.9-4.0-2.10.5-2.5-4.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-892000.0-2544000.01124000.0545000.01057000.0-1540000.0-472000.0-785000.0658000.0-2127000.0-603000.0-527000.0-524000.0-1366000.0-619000.0-410000.0-332000.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.60.00.90.40.9-1.3-0.4-0.80.7-2.3-0.7-0.6-0.7-1.9-0.9-0.7-0.6

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value979487828479807778676261595750
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax68.50.067.367.572.969.872.774.778.873.071.774.475.978.275.3

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value117.65810102.6945.1251.629-0.018-4.4380.2071.572-0.909-2.089-4.206-1.129-0.508-1.111-1.969-3.03-2.427-2.947
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.90.08.38.22.34.51.5-0.0-4.50.21.8-1.1-2.7-5.7-1.7-0.8-1.9-3.8-6.3-5.5-7.1

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value5.178-5.159152.0913.9-9.7393.221.0221.5333.956-3.7170.304-2.168
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.60.012.21.73.4-8.52.91.01.54.3-4.20.4-2.8

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value5.178-5.159152.0913.9-9.7393.221.0221.5333.956-3.7170.304-2.168
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.60.012.21.73.4-8.52.91.01.54.3-4.20.4-2.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value5.178-5.159152.0913.9-9.7393.1990.9851.5633.987-3.7290.337-2.1041.242.06-0.5870.354
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.60.012.21.73.4-8.52.91.01.64.3-4.30.4-2.71.73.1-0.90.6

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value105.76810103.1382.5250.206-0.921-4.01
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.10.08.38.22.72.20.2-0.9-4.0

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3127252222212019191514141312108.2627.921
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.10.019.618.219.818.618.918.719.517.316.817.216.716.614.913.113.6

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value14213312912211511411010399928782787367635852484441
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:GB


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4038363533333229292726252423211917
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.328.828.528.928.728.929.128.229.630.230.130.631.331.431.531.130.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.328.828.528.928.728.929.128.229.630.230.130.631.331.431.531.130.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:GB100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value7067656360585653504643413735333129
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.750.150.951.552.751.651.052.150.850.250.250.148.447.849.349.350.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.750.150.951.552.751.651.052.150.850.250.250.148.447.849.349.350.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:ZA


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value15141312111213121212111111119.7169.3938.781
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.810.610.610.29.711.412.112.312.613.013.313.414.815.714.414.915.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.810.610.610.29.711.412.112.312.613.013.313.414.815.714.414.915.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:ZA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mime:OtherGeographicalAreas


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value15141211109.2058.5467.7246.8966.0895.6284.9064.2943.7523.2182.9622.318
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.110.510.09.58.88.17.87.56.96.66.46.05.55.14.84.74.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.110.510.09.58.88.17.87.56.96.66.46.05.55.14.84.74.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mime:OtherGeographicalAreas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value14213312912211511411010399928782787367635852484441
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling And Marketing Expense

us-gaap:SellingAndMarketingExpense

us-gaap:SellingAndMarketingExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4846454344414241433534343432313027
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax33.934.434.935.938.236.738.839.843.738.939.342.243.644.146.447.847.4

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value965934904824746729714678662554542510384358205
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value557573558530488497489476471380390366247256123
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets57.761.461.864.365.468.268.670.171.268.771.871.764.471.660.1

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value965934904824746729714678662554542510384358205
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value4083603452942582322242021911731521441371018178-53.851
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets42.338.638.235.734.631.831.429.928.831.328.228.335.628.439.90.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value105.7610-4.856-6.947-10.847-1.108-4.307-5.292-6.855-10.842-7.115-7.451-5.347-8.414-3.038-1.331
Percentage of StockholdersEquity2.71.63.2-1.7-2.7-4.7-0.5-2.1-2.8-3.9-7.1-4.9-5.4-5.3-10.3-3.92.5
Percentage of Assets1.10.61.2-0.6-0.9-1.5-0.2-0.6-0.8-1.2-2.0-1.4-1.9-1.5-4.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value44040839336834532531129228126324423322321218316932
Percentage of StockholdersEquity107.9113.1113.9125.3133.6140.4138.5144.4147.1151.7160.1161.2163.4209.3224.1216.5-60.2
Percentage of Assets45.643.743.544.746.244.643.543.142.447.545.145.758.259.489.50.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value0.7880.7750.7720.7660.7590.7540.750.7430.740.7340.7240.7210.7150.7070.6710.6510.395
Percentage of StockholdersEquity0.20.20.20.30.30.30.30.40.40.40.50.50.50.70.80.8-0.7
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.20.20.30.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value-43.843-53.915-59.683-70.472-80.522-83.66-86.185-86.391-85.47-83.632-81.702-82.16-80.102-106.507-94.017-88.576-85.332
Percentage of StockholdersEquity-10.7-14.9-17.3-23.9-31.2-36.1-38.4-42.6-44.7-48.2-53.4-56.8-58.4-104.7-114.7-113.5158.5
Percentage of Assets-4.5-5.8-6.6-8.5-10.8-11.5-12.1-12.7-12.9-15.1-15.0-16.1-20.8-29.7-45.80.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value478443402344313298294296289288242222224217166
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets49.547.444.541.842.041.041.343.743.752.044.643.658.560.880.9

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value338292270230198173189191174137135118107785110632
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.031.329.928.026.623.826.628.226.424.825.023.328.021.925.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value10111497818697807068806459566544
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.512.210.89.811.513.411.210.310.314.611.911.714.718.221.6

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value1793000.01982000.01850000.01183000.0857000.0
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0
Percentage of Assets0.20.30.30.30.4

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value212019191616141715251412131510
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.32.12.12.42.22.22.02.62.44.72.62.43.54.34.9

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value20717317318977
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0
Percentage of Assets22.223.831.353.037.7

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

mime:AssetsHeldUnderFinanceLeases


Property
Period End2021-03-312020-03-312019-03-31
Value4.0014.7144.754
Percentage of PropertyPlantAndEquipmentGross1.92.72.7
Percentage of Assets0.40.60.9
Percentage of Assets mime:AssetsHeldUnderFinanceLeases0.00.00.0

us-gaap:ComputerEquipment


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value16613111210269
Percentage of PropertyPlantAndEquipmentGross80.175.964.854.290.3
Percentage of Assets17.818.120.328.734.1
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value5.5735.7934.594.1872.232
Percentage of PropertyPlantAndEquipmentGross2.73.32.62.22.9
Percentage of Assets0.60.80.81.21.1
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value33348.1666.5045.015
Percentage of PropertyPlantAndEquipmentGross16.119.64.73.46.5
Percentage of Assets3.64.71.51.82.4
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.0

us-gaap:OfficeEquipment


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value2.3392.0841.3451.1720.267
Percentage of PropertyPlantAndEquipmentGross1.11.20.80.60.3
Percentage of Assets0.30.30.20.30.1
Percentage of Assets us-gaap:OfficeEquipment0.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value11488796645
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0
Percentage of Assets12.312.114.318.422.2

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType

mime:AssetsHeldUnderFinanceLeases


Accumulated
Period End2021-03-312020-03-312019-03-31
Value3.6943.4072.228
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment3.23.82.8
Percentage of Assets0.40.50.4
Percentage of Assets mime:AssetsHeldUnderFinanceLeases0.00.00.0

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2400000.02400000.02500000.02400000.02100000.02100000.01900000.01500000.01500000.01500000.01300000.01200000.0800000.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value9292948685858674659414513112412332
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.69.910.410.511.511.712.010.99.917.026.825.832.334.515.6

us-gaap:PropertyPlantAndEquipmentNet us-gaap:PropertyPlantAndEquipmentByType

mime:AssetsHeldUnderFinanceLeases


Property
Period End2021-03-312020-03-312019-03-31
Value0.3071.3072.526
Percentage of PropertyPlantAndEquipmentNet0.31.52.7
Percentage of Assets0.00.20.5
Percentage of Assets mime:AssetsHeldUnderFinanceLeases0.00.00.0

us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical

country:GB


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value28283029292930221917685648469.007
Percentage of PropertyPlantAndEquipmentNet30.431.132.734.133.834.835.530.729.318.547.042.639.237.728.1
Percentage of Assets2.93.13.43.63.94.14.33.32.93.112.611.012.713.04.4
Percentage of Assets country:GB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

country:US


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value404038363739383531626261616214
Percentage of PropertyPlantAndEquipmentNet43.943.240.442.343.646.044.948.048.366.343.246.849.250.146.6
Percentage of Assets4.24.34.24.55.05.45.45.24.811.311.512.115.917.37.3
Percentage of Assets country:US0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

country:ZA


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value7.6827.9428.7257.2727.0317.0938.3957.1476.0626.175.9085.8215.6876.5123.815
Percentage of PropertyPlantAndEquipmentNet8.38.59.38.48.28.39.89.69.26.54.14.44.65.311.9
Percentage of Assets0.80.81.00.90.91.01.21.10.91.11.11.11.51.81.9
Percentage of Assets country:ZA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

mime:OtherGeographicalAreas


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value16151613129.2484.9715.1575.1634.6945.0584.8144.9774.6290.416
Percentage of PropertyPlantAndEquipmentNet17.417.117.615.214.410.95.87.07.95.03.53.74.03.71.3
Percentage of Assets1.71.71.81.61.71.30.70.80.80.80.90.91.31.30.2
Percentage of Assets mime:OtherGeographicalAreas0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value1761731781691541501301101081071001035.6025.6315.3630.254
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.318.619.720.620.720.618.316.316.419.418.520.21.51.62.60.0

us-gaap:Goodwill us-gaap:BusinessAcquisition

mime:ETorchInc


Goodwillus-gaap:
Period End2020-07-29
Value14
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets mime:ETorchInc0.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value4143454539383431293027298.5579.8191.59
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.34.65.15.55.35.34.94.74.45.55.15.82.22.70.8

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value4143454539383431293027298.0339.2621.59
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.34.65.15.55.35.34.94.74.45.55.15.82.12.60.8

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

mime:CapitalizedSoftwareAndOtherIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value11121313109.0610
Percentage of FiniteLivedIntangibleAssetsNet27.328.828.729.027.023.629.6
Percentage of Assets1.21.31.51.61.41.21.4
Percentage of Assets mime:CapitalizedSoftwareAndOtherIntangibleAssets0.00.00.00.00.00.00.0

mime:PurchasedIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3030323229292421212218201.3781.42
Percentage of FiniteLivedIntangibleAssetsNet72.771.271.371.073.076.470.467.874.772.768.068.117.215.3
Percentage of Assets3.13.33.63.93.94.03.43.23.34.03.53.90.40.4
Percentage of Assets mime:PurchasedIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11121313109.0610107.3628.3498.9399.4286.6557.842
Percentage of FiniteLivedIntangibleAssetsNet27.328.828.729.027.023.629.632.225.327.332.031.982.884.7
Percentage of Assets1.21.31.51.61.41.21.41.51.11.51.61.81.72.2
Percentage of Assets us-gaap:ComputerSoftwareIntangibleAsset0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value0.6350.6660.7230.7330.5930.6120.5880.3570.3690.3820.3920.4160.0830.0870.102
Percentage of FiniteLivedIntangibleAssetsNet1.51.51.61.61.51.61.71.11.31.21.41.41.00.96.4
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.00.00.0
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value2930313128282321212118191.2951.3331.488
Percentage of FiniteLivedIntangibleAssetsNet71.269.669.869.371.574.868.766.773.571.466.566.516.114.493.6
Percentage of Assets3.13.23.53.83.83.93.33.13.23.93.43.80.30.40.7
Percentage of Assets us-gaap:DevelopedTechnologyRights0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value122128134134111116125127133
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.713.714.816.314.916.017.518.720.1

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value2601000.03097000.03513000.03363000.03437000.03614000.07638000.06652000.06195000.05156000.02430000.02393000.01463000.01222000.0312000.0
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.40.40.50.51.11.00.90.90.40.50.40.30.2

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value12101010121412127.4119.4577.2897.2364.536.0523.558
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.11.21.21.62.01.81.91.11.71.31.41.21.71.7

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value7587000.05809000.05305000.04029000.03490000.0
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0
Percentage of Assets0.80.81.01.11.7

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value232237210189190194179161162163137124120123
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.125.423.223.025.526.625.123.824.629.425.224.531.434.3

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value337345321290285288269252241221188173159164110
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.937.035.535.338.239.637.737.236.440.034.734.041.545.853.8

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value9722000.09090000.08459000.07828000.07202000.06573000.05947000.05321000.04695000.04059000.03438000.02814000.0
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.00.90.91.00.90.80.80.70.70.60.6

us-gaap:LongTermDebtCurrent us-gaap:CreditFacility

mime:SeniorSecuredTermLoan


Long
Period End2021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value9090000.07202000.06573000.05947000.05321000.04695000.04059000.03438000.02814000.0
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.00.90.80.80.70.70.60.6
Percentage of Assets mime:SeniorSecuredTermLoan0.00.00.00.00.00.00.00.00.0

mime:SeniorSecuredTermLoanAndSeniorSecuredRevolvingCreditFacility


Long
Period End2021-06-302020-12-312020-09-30
Value9722000.08459000.07828000.0
Percentage of LongTermDebtCurrent100.0100.0100.0
Percentage of Assets1.00.90.9
Percentage of Assets mime:SeniorSecuredTermLoanAndSeniorSecuredRevolvingCreditFacility0.00.00.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value333333343030292927
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.43.63.74.24.14.24.24.44.2

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value141215115.562
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0
Percentage of Assets1.61.72.73.12.7

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value929497998486888991929395
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.610.110.712.111.311.812.313.213.816.717.318.6

us-gaap:LongTermDebtNoncurrent us-gaap:CreditFacility

mime:SeniorSecuredTermLoan


Long
Period End2021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value948486888991929395
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.111.311.812.313.213.816.717.318.6
Percentage of Assets mime:SeniorSecuredTermLoan0.00.00.00.00.00.00.00.00.0

mime:SeniorSecuredTermLoanAndSeniorSecuredRevolvingCreditFacility


Long
Period End2021-06-302020-12-312020-09-30
Value929799
Percentage of LongTermDebtNoncurrent100.0100.0100.0
Percentage of Assets9.610.712.1
Percentage of Assets mime:SeniorSecuredTermLoanAndSeniorSecuredRevolvingCreditFacility0.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value7.5278.1439.373107.0234.3863.7714.7424.268156.0587.3424.34.9541.538
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.91.01.20.90.60.50.70.62.81.11.41.11.40.7

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value10711211811898105115116121
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.112.013.114.413.314.416.217.218.3

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value24313129
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets2.53.43.53.6

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value22232321
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets2.32.52.52.6

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value17212120
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets1.82.32.42.5

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2021-03-31
Value17
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets1.9

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2021-03-31
Value32
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets3.5

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-06-30
Value140145151153135145146149
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.615.616.818.618.620.421.522.5

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value159165173175
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets16.517.719.221.3

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value18192122
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0
Percentage of Assets1.92.12.42.7

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value4083603452942582322242021911731521441371018178-53.851
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets42.338.638.235.734.631.831.429.928.831.328.228.335.628.439.90.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value105.7610-4.856-6.947-10.847-1.108-4.307-5.292-6.855-10.842-7.115-7.451-5.347-8.414-3.038-1.331
Percentage of StockholdersEquity2.71.63.2-1.7-2.7-4.7-0.5-2.1-2.8-3.9-7.1-4.9-5.4-5.3-10.3-3.92.5
Percentage of Assets1.10.61.2-0.6-0.9-1.5-0.2-0.6-0.8-1.2-2.0-1.4-1.9-1.5-4.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value44040839336834532531129228126324423322321218316932
Percentage of StockholdersEquity107.9113.1113.9125.3133.6140.4138.5144.4147.1151.7160.1161.2163.4209.3224.1216.5-60.2
Percentage of Assets45.643.743.544.746.244.643.543.142.447.545.145.758.259.489.50.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value0.7880.7750.7720.7660.7590.7540.750.7430.740.7340.7240.7210.7150.7070.6710.6510.395
Percentage of StockholdersEquity0.20.20.20.30.30.30.30.40.40.40.50.50.50.70.80.8-0.7
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.20.20.30.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-312015-03-31
Value-43.843-53.915-59.683-70.472-80.522-83.66-86.185-86.391-85.47-83.632-81.702-82.16-80.102-106.507-94.017-88.576-85.332
Percentage of StockholdersEquity-10.7-14.9-17.3-23.9-31.2-36.1-38.4-42.6-44.7-48.2-53.4-56.8-58.4-104.7-114.7-113.5158.5
Percentage of Assets-4.5-5.8-6.6-8.5-10.8-11.5-12.1-12.7-12.9-15.1-15.0-16.1-20.8-29.7-45.80.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value788000.0775000.0772000.0766000.0759000.0754000.0750000.0743000.0740000.0734000.0724000.0721000.0715000.0707000.0671000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.20.20.3

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value440408393368345325311292281263244233223212183
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.643.743.544.746.244.643.543.142.447.545.145.758.259.489.5

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-05-152019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value-43.843-53.915-59.683-70.472-80.522-83.66-86.185-86.391-85.4729-83.632-81.702-82.16-80.102-106.507-94.017
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-4.5-5.8-6.6-8.5-10.8-11.5-12.1-12.7-12.90.0-15.1-15.0-16.1-20.8-29.7-45.8

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value105.7610-4.856-6.947-10.847-1.108-4.307-5.292-6.855-10.842-7.115-7.451-5.347-8.414
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.10.61.2-0.6-0.9-1.5-0.2-0.6-0.8-1.2-2.0-1.4-1.9-1.5-4.1

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value17121313139.8339.7329.908107.487.1836.115.156
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value17121313139.8339.7329.908107.487.1836.115.156
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4031343129251917281818121614127.33411
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.623.727.025.325.421.917.517.128.719.921.515.221.220.118.811.620.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-9095000.0-7592000.0-10761000.0-26443000.0-10771000.0-37101000.0-30547000.0295000.01814000.0-26592000.0-3492000.0-100660000.09425000.0-18868000.0-16727000.08337000.0-7761000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.4-5.7-8.3-21.6-9.4-32.5-27.70.31.8-28.8-4.0-122.512.0-25.7-24.913.2-13.3

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value12-0.3689.218253.9633.3677.3860.0386.9429.4132.52995.2885.6832.3042.2572.912
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.8-0.37.120.83.42.96.70.07.010.22.9121.46.77.73.43.65.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4522403224-15.905-1.30916371.8921611292.349-0.938177.67
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax31.916.531.026.221.3-13.9-1.215.837.52.119.213.837.23.2-1.428.413.2

Amortization Of Financing Costs

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfFinancingCosts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value111000.0111000.0115000.0115000.0114000.0115000.0115000.0114000.0157000.097000.0116000.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302020-06-30
Value117000.0-178000.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value9.8769.8019.959.4958.8528.8348.4317.5387.4427.917.7637.3546.9266.3824.7194.253.609
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4368000.0-39000.0-1129000.0-464000.0-2037000.02760000.0-621000.02884000.0-808000.0-367000.0-511000.02863000.0108000.0-864000.0-733000.0217000.01276000.0
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-13.9351613-6.893-12.405217.4683.172-11.927155.4233.622-6.079107.1324.748-4.429
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4031343129251917281818121614127.33411
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.623.727.025.325.421.917.517.128.719.921.515.221.220.118.811.620.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value105.76810103.1382.5250.206-0.921-4.01-1.930.458-2.058-3.471-6.554-2.593-1.339-1.9-2.618-3.370.3030.244
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.14.38.38.22.72.20.2-0.9-4.0-2.10.5-2.5-4.4-8.9-3.9-2.1-3.3-5.0-7.00.70.6

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value105.76810103.1382.5250.206-0.921-4.01-1.930.458-2.058-3.471
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.14.38.38.22.72.20.2-0.9-4.0-2.10.5-2.5-4.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value105.76810103.1382.5250.206-0.921-4.01
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.14.38.38.22.72.20.2-0.9-4.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value17121313139.8719.7019.938107.4687.1966.1095.1813.0363.1422.912.646
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-9095000.0-7592000.0-10761000.0-26443000.0-10771000.0-37101000.0-30547000.0295000.01814000.0-26592000.0-3492000.0-100660000.09425000.0-18868000.0-16727000.08337000.0-7761000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.4-5.7-8.3-21.6-9.4-32.5-27.70.31.8-28.8-4.0-122.512.0-25.7-24.913.2-13.3

Payments To Acquire Productive Assets

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value9.0957.666109.399101217139.1614.9168.0368.2687.575128.1865.6737.73
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value12-0.3689.218253.9633.3677.3860.0386.9429.4132.52995.2885.6832.3042.2572.912
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.8-0.37.120.83.42.96.70.07.010.22.9121.46.77.73.43.65.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value35.6834.1333.8133.0232.131.6130.7129.5428.7223.4721.7821.2919.2213.789.58
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType, us-gaap:SubsequentEventType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:RestrictedStockUnitsRSU, us-gaap:SubsequentEvent


Share
Period End2021-04-012020-04-012019-04-012018-04-02
Value1500000.01600000.0600000.0200000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2021-03-312020-03-312019-03-312018-03-31
Value2404000.02405000.02008000.0108000.0
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-31
Value12106.0166.1644.9312.326
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value3634383414
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0

mime:AmortizationOfDeferredContractCosts

mime:AmortizationOfDeferredContractCosts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4.1613.7983.4273.1752.8692.7092.5022.262.1161.861.6511.4931.386
Percentage of AmortizationOfDeferredContractCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mime:AmortizationOfOperatingLeaseRightOfUseAssets

mime:AmortizationOfOperatingLeaseRightOfUseAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value8.338.0527.7137.5047.1117.8328.3818.057.677
Percentage of AmortizationOfOperatingLeaseRightOfUseAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0

mime:DiscreteTaxBenefit

mime:DiscreteTaxBenefit


Discrete
Period End2020-12-312020-09-30
Value0600000.0
Percentage of DiscreteTaxBenefit0.0100.0

mime:FinanceLeaseCost

mime:FinanceLeaseCost


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value253000.0256000.0259000.0262000.0266000.0269000.0331000.0335000.0337000.0
Percentage of FinanceLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

mime:ForeignCurrencyTransactionGainLossBeforeTaxAndOther

mime:ForeignCurrencyTransactionGainLossBeforeTaxAndOther


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-514000.0-2139000.01441000.01161000.01763000.0-1237000.0-93000.0-704000.0956000.0-1118000.0705000.0498000.0-441000.0-1380000.0-864000.0-655000.0-540000.0
Percentage of ForeignCurrencyTransactionGainLossBeforeTaxAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mime:IncreaseDecreaseInOperatingLeaseLiabilities

mime:IncreaseDecreaseInOperatingLeaseLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-8045000.0-8250000.0-9849000.0-6954000.0-8221000.0-7972000.0-7861000.0-4963000.0-5145000.0
Percentage of IncreaseDecreaseInOperatingLeaseLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0

mime:ProceedsReceivableFromIssuanceOfOrdinaryShares

mime:ProceedsReceivableFromIssuanceOfOrdinaryShares


Proceeds
Period End2021-06-30
Value415000.0
Percentage of ProceedsReceivableFromIssuanceOfOrdinaryShares100.0

mime:RestructuringActivitiesReductionInWorkforcePercentage

mime:RestructuringActivitiesReductionInWorkforcePercentage


Restructuring
Period End2021-01-28
Value4.0
Percentage of RestructuringActivitiesReductionInWorkforcePercentage100.0

mime:RestructuringActivitiesReductionInWorkforcePercentage us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Restructuring
Period End2021-01-28
Value4.0
Percentage of RestructuringActivitiesReductionInWorkforcePercentage100.0

mime:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageSharePriceForOptionsGranted

mime:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageSharePriceForOptionsGranted


Share
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.74033.43-0.72-0.447.30.041.0835.670.530.760.8124.42
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageSharePriceForOptionsGranted100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mime:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageSharePriceForOptionsGranted us-gaap:AwardType

us-gaap:EmployeeStockOption


Share
Period End2021-06-302020-06-30
Value41.5533.43
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageSharePriceForOptionsGranted0.0100.0

mime:ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseInNumberOfSharesReservedAndAvailableForIssuancePercentage us-gaap:AwardType, us-gaap:PlanName

mime:ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseInNumberOfSharesReservedAndAvailableForIssuancePercentage

us-gaap:EmployeeStockOption, mime:TwoThousandAndFifteenPlan


Share
Period End2021-06-302021-03-312020-12-31
Value5.000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseInNumberOfSharesReservedAndAvailableForIssuancePercentage100.00.00.0

mime:TaxWithholdingOnEmployeeStockPurchasePlanAndVestingOfRestrictedStockUnitsShares us-gaap:StatementEquityComponents

mime:TaxWithholdingOnEmployeeStockPurchasePlanAndVestingOfRestrictedStockUnitsShares

us-gaap:CommonStock


Tax
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value174000.026000.017000.003000.011000.03000.006000.0
Percentage of TaxWithholdingOnEmployeeStockPurchasePlanAndVestingOfRestrictedStockUnitsShares100.0100.0100.00.0100.0100.0100.00.0100.0

mime:TaxWithholdingOnEmployeeStockPurchasePlanAndVestingOfRestrictedStockUnitsValue

mime:TaxWithholdingOnEmployeeStockPurchasePlanAndVestingOfRestrictedStockUnitsValue


Tax
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value7172000.01157000.0867000.0733000.02575000.0535000.0115000.0397000.01431000.0
Percentage of TaxWithholdingOnEmployeeStockPurchasePlanAndVestingOfRestrictedStockUnitsValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

mime:TaxWithholdingOnEmployeeStockPurchasePlanAndVestingOfRestrictedStockUnitsValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Tax
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value7170000.01156000.0867000.0733000.02575000.0535000.0115000.0397000.01431000.0
Percentage of TaxWithholdingOnEmployeeStockPurchasePlanAndVestingOfRestrictedStockUnitsValue100.099.9100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStock


Tax
Period End2021-06-302021-03-312020-06-30
Value2000.01000.01000.0
Percentage of TaxWithholdingOnEmployeeStockPurchasePlanAndVestingOfRestrictedStockUnitsValue0.00.10.0

mime:UnpaidPurchasesOfPropertyEquipmentAndCapitalizedSoftwareLicenses

mime:UnpaidPurchasesOfPropertyEquipmentAndCapitalizedSoftwareLicenses


Unpaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4.279-0.4222.1410.8678.7311.8290.116.2075.0862.4521.0252.9891.168-3.2026.5871.6412.951
Percentage of UnpaidPurchasesOfPropertyEquipmentAndCapitalizedSoftwareLicenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareAdditions

us-gaap:CapitalizedComputerSoftwareAdditions


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2700000.00200000.002700000.0600000.0400000.0300000.0900000.0300000.0
Percentage of CapitalizedComputerSoftwareAdditions100.00.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value991887858015736967115553
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentInterestRateDuringPeriod us-gaap:LineOfCreditFacility

us-gaap:DebtInstrumentInterestRateDuringPeriod

mime:CreditAgreementWithCertainLenders


Debt
Period End2020-12-312020-09-302020-06-30
Value01.36130.01375
Percentage of DebtInstrumentInterestRateDuringPeriod0.0100.0100.0

us-gaap:DebtInstrumentInterestRateDuringPeriod us-gaap:LineOfCreditFacility, us-gaap:VariableRate

mime:CreditAgreementWithCertainLenders, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-06-30
Value1.375
Percentage of DebtInstrumentInterestRateDuringPeriod0.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.273-1.6966.7542.0992.086-7.2192.569-1.656-0.0440.743-1.029-0.217-2.1560.7470.8320.0110.881
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExcessTaxBenefitFromShareBasedCompensationFinancingActivities

us-gaap:ExcessTaxBenefitFromShareBasedCompensationFinancingActivities


Excess
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-30
Value1300000.01400000.02700000.0400000.01600000.01100000.0600000.01900000.0400000.0
Percentage of ExcessTaxBenefitFromShareBasedCompensationFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value3000.06000.09000.012000.016000.018000.022000.025000.028000.0500000.0500000.0500000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeaseInterestPaymentOnLiability


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value3000.06000.05000.012000.020000.012000.020000.024000.018000.0
Percentage of FinanceLeaseInterestPaymentOnLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value273000.0268000.0178000.0264000.0347000.0171000.0255000.0252000.0166000.0590000.0243000.0239000.0203000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value250000.0250000.0250000.0250000.0250000.0272000.0309000.0310000.0309000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossUnrealized

us-gaap:ForeignCurrencyTransactionGainLossUnrealized


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-83000.0-2141000.01123000.0684000.02733000.0-2063000.0633000.0-993000.0856000.0-697000.0-682000.0388000.0111000.0-1531000.0-629000.0-415000.0-383000.0
Percentage of ForeignCurrencyTransactionGainLossUnrealized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2021-06-302021-03-312020-12-31
Value2.956-4.6938.874
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-6.881-3.8637.6013.0075.3432.547-4.1162.492-4.6753.1381.5180.1560.3984.9491.1652.519-1.563
Percentage of IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerAsset


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value5.4039.2098.7915.5275.2036.2276.2845.4344.8066.6255.8233.9363.835
Percentage of IncreaseDecreaseInContractWithCustomerAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-6.5992814-6.033-5.64522131.3531.29525134.1252.52119
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-405000.0-1115000.0106000.0502000.0-156000.0-819000.0687000.0655000.0638000.0731000.0106000.01110000.098000.09000.0-9000.0-39000.06000.0
Percentage of IncreaseDecreaseInOtherNoncurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1218000.0867000.0-1448000.02651000.0497000.01795000.0-4512000.02765000.0-8856000.02676000.02652000.0-1713000.0-1569000.04410000.0-1147000.02210000.0-436000.0
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312018-12-31
Value1736000.0-18000.02036000.02064000.01657000.01807000.02396000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value158000.0148000.0261000.0174000.0177000.0623000.0727000.01114000.0982000.0875000.0653000.0543000.0444000.0456000.0301000.0314000.0239000.0
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value9.9469.7379.398.9458.3779.1929.7799.5359.4
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value9.6729.942118.4879.6379.779.556.6596.837
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value5.178-5.159152.0913.9-9.7393.221.0221.5333.956-3.7190.305-2.1681.2441.959-0.5960.232
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring us-gaap:RestructuringCostAndReserve

us-gaap:PaymentsForRestructuring

us-gaap:EmployeeSeverance


Payments
Period End2021-06-30
Value297000.0
Percentage of PaymentsForRestructuring100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value7172000.01157000.0867000.0733000.02575000.0535000.0115000.0395000.01431000.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:StatementGeographical, us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

stpr:DE, mime:ETorchInc


Payments
Period End2020-07-29
Value17
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2021-03-312020-12-312020-03-312019-03-312018-12-312018-03-31
Value-0.0740.0246.760.00.0
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.00.0100.0100.00.00.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired us-gaap:StatementGeographical, us-gaap:BusinessAcquisition

stpr:DE, mime:ETorchInc


Payments
Period End2020-07-29
Value0.4
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired0.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value212.93212108.1355.7088.9131.9378.87114.1953.3075.9047.5193.0842.9913.445
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans us-gaap:PlanName

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans

mime:MimecastLimitedTwoThousandAndFifteenEmployeeSharePurchasePlan


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3400000.003300000.003100000.002700000.002200000.001900000.001400000.0
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value182.98.8105.05.36.21.96.7112.33.34.5
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfDebt

us-gaap:RepaymentsOfDebt


Repayments
Period End2021-06-302020-06-302019-06-30
Value1875000.01250000.0625000.0
Percentage of RepaymentsOfDebt100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2.02.0181.423271.0046.0251.1665.5961.195
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue


Share
Period End2021-06-30
Value38.99
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-03-312020-12-31
Value-0.380.11
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue0.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue


Share
Period End2021-06-30
Value41.17
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-03-312020-12-31
Value0.790.98
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue


Share
Period End2021-06-30
Value37.1
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-03-312020-12-31
Value-0.64-0.66
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue0.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate


Share
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value044.1540.446000.42800.0050.4090-0.00300.401
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.0100.0100.00.00.0100.00.0100.0100.00.0100.00.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate us-gaap:AwardType

us-gaap:EmployeeStockOption


Share
Period End2021-06-302020-06-30
Value46.744.6
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.010000.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate


Share
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-0.10.5940.006-0.001-0.0010.0240.00100.02700.00100.021
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate us-gaap:AwardType

us-gaap:EmployeeStockOption


Share
Period End2021-06-302020-06-30
Value1.40.6
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.010000.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value134.49999999999999649.4145.4
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-31
Value39.980.271.25
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross us-gaap:AwardType, us-gaap:SubsequentEventType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:EmployeeStockOption, us-gaap:SubsequentEvent


Share
Period End2021-04-012020-04-012019-04-012018-04-02
Value700000.0800000.01100000.01300000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value19.100.76014.31-0.07-0.38-0.2721.150.160.040.6415.640.260.280.3210.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-31
Value28.23-0.430.96
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-31
Value41.5501.74
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.00.0100.0

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value26000.041000.040000.021000.067000.097000.070000.068000.073000.0
Percentage of ShortTermLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value75000.0091000.0087000.0076000.0089000.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans100.00.0100.00.0100.00.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value527000.076000.052000.041000.0144000.035000.020000.027000.047000.0
Percentage of StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value672000.0165000.0378000.0533000.0249000.0282000.0440000.0197000.0441000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value3374000.003321000.003095000.002795000.0-1000.02490000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.00.0100.00.0100.00.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value3373000.003320000.003094000.002793000.002489000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.00.0100.00.0100.00.099.9-0.0100.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-30
Value1000.001000.001000.002000.01000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan0.00.00.00.00.00.00.10.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-6000.0-2000.0-1000.0-1000.0-1000.0-1000.00
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.00.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value6000.02000.01000.01000.01000.01000.00
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures-100.0-100.0-100.0-100.0-100.0-100.00.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value182.9328.817105.045.3236.2111.9376.674
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value182.938.812105.0375.326.2061.9346.669
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.099.999.999.999.999.999.999.899.9

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.0080.0020.0050.0060.0030.0030.0050.0030.005
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised0.00.10.10.10.10.10.10.20.1

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


Variable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value1411000.01460000.01536000.01815000.01743000.01320000.0973000.0902000.0949000.0
Percentage of VariableLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityPublicFloat

dei:EntityPublicFloat


Entity
Period End2020-09-30
Value2754
Percentage of EntityPublicFloat100.0

mime:AccruedExpensesAndOtherCurrentLiabilities

mime:AccruedExpensesAndOtherCurrentLiabilities


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value485458474441404237443937333320
Percentage of AccruedExpensesAndOtherCurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mime:CapitalizedComputerSoftwareAndOtherNet us-gaap:NatureOfExpense

mime:CapitalizedComputerSoftwareAndOtherNet

mime:InternetProtocolAddress


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value300000.0300000.0300000.0200000.0200000.0200000.0300000.0
Percentage of CapitalizedComputerSoftwareAndOtherNet100.0100.0100.0100.0100.0100.0100.0

mime:VideoProductionCosts


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-31
Value2000000.02100000.01700000.01600000.01500000.01400000.01000000.0500000.0
Percentage of CapitalizedComputerSoftwareAndOtherNet666.7700.0566.7800.0750.0700.0333.30.0

mime:DeferredTaxAssetsLeaseLiability

mime:DeferredTaxAssetsLeaseLiability


Deferred
Period End2021-03-312020-03-312019-03-312018-03-31
Value20301117
Percentage of DeferredTaxAssetsLeaseLiability100.0100.0100.0100.0

mime:DeferredTaxLiabilitiesCapitalizedCommissions

mime:DeferredTaxLiabilitiesCapitalizedCommissions


Deferred
Period End2021-03-312020-03-312019-03-31
Value129.7517.606
Percentage of DeferredTaxLiabilitiesCapitalizedCommissions100.0100.0100.0

mime:DeferredTaxLiabilitiesRightOfUseAsset

mime:DeferredTaxLiabilitiesRightOfUseAsset


Deferred
Period End2021-03-312020-03-31
Value1817
Percentage of DeferredTaxLiabilitiesRightOfUseAsset100.0100.0

mime:FiniteLivedIntangibleAssetAmortizationExpenseAfterYearFour us-gaap:FiniteLivedIntangibleAssetsByMajorClass

mime:FiniteLivedIntangibleAssetAmortizationExpenseAfterYearFour

mime:PurchasedIntangibleAssets


Finite
Period End2021-06-302020-12-312020-09-302020-06-30
Value8.833131210
Percentage of FiniteLivedIntangibleAssetAmortizationExpenseAfterYearFour100.0100.0100.0100.0

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-06-302020-12-312020-09-302020-06-30
Value0.0690.2780.2720.155
Percentage of FiniteLivedIntangibleAssetAmortizationExpenseAfterYearFour0.82.12.21.5

mime:LesseeOperatingAndFinanceLeaseLeaseNotYetCommencedValue

mime:LesseeOperatingAndFinanceLeaseLeaseNotYetCommencedValue


Lessee
Period End2021-06-302021-03-312020-12-31
Value8.9109.1
Percentage of LesseeOperatingAndFinanceLeaseLeaseNotYetCommencedValue100.0100.0100.0

mime:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour

mime:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour


Lessee
Period End2021-06-302020-12-312020-09-30
Value324947
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour100.0100.0100.0

mime:PreTaxRestructuringChargesNetOfOtherAdjustments

mime:PreTaxRestructuringChargesNetOfOtherAdjustments


Pre
Period End2021-03-31
Value3300000.0
Percentage of PreTaxRestructuringChargesNetOfOtherAdjustments100.0

mime:UnremittedEarningsOfForeignSubsidiariesRelatedToNonPaymentOfWithholdingTaxes

mime:UnremittedEarningsOfForeignSubsidiariesRelatedToNonPaymentOfWithholdingTaxes


Unremitted
Period End2021-03-31
Value42
Percentage of UnremittedEarningsOfForeignSubsidiariesRelatedToNonPaymentOfWithholdingTaxes100.0

mime:UnremittedEarningsOfForeignSubsidiariesRelatedToPaymentOfWithholdingTaxes

mime:UnremittedEarningsOfForeignSubsidiariesRelatedToPaymentOfWithholdingTaxes


Unremitted
Period End2021-03-31
Value16
Percentage of UnremittedEarningsOfForeignSubsidiariesRelatedToPaymentOfWithholdingTaxes100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:MoneyMarketFunds, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value151536241317146.6516.9488.3482.1067.7856.091107.478
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency

us-gaap:MoneyMarketFunds, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value1536241317146.6516.9488.3482.1067.7856.091107.478
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

mime:ETorchInc


Business
Period End2020-07-29
Value3.8
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

mime:ETorchInc, us-gaap:CustomerRelationships


Business
Period End2020-07-29
Value0.2
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill5.3

mime:ETorchInc, us-gaap:DevelopedTechnologyRights


Business
Period End2020-07-29
Value3.5
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill92.1

mime:ETorchInc, us-gaap:Patents


Business
Period End2020-07-29
Value0.1
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill2.6

us-gaap:CapitalizedContractCostNetCurrent

us-gaap:CapitalizedContractCostNetCurrent


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value161614121211109.4918.8028.147.0366.2655.53
Percentage of CapitalizedContractCostNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostNetNoncurrent

us-gaap:CapitalizedContractCostNetNoncurrent


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value50504640383635313028242119
Percentage of CapitalizedContractCostNetNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-03-31
Value3382922702301981731891911741371351181077875765851106
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1212121112121211121211111218
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:CreditFacility

us-gaap:DebtInstrumentCarryingAmount

mime:SeniorSecuredRevolvingCreditFacility


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value171717170.00.00.00.00.00.00.00.0
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.00.00.00.00.00.00.00.00.0

mime:SeniorSecuredTermLoan


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value10488909293959697989899
Percentage of DebtInstrumentCarryingAmount596.4507.4517.70.00.00.00.00.00.00.00.0

mime:SeniorSecuredTermLoanAndSeniorSecuredRevolvingCreditFacility


Debt
Period End2021-06-302020-12-312020-09-30
Value102106108
Percentage of DebtInstrumentCarryingAmount585.7607.1617.9

us-gaap:DebtInstrumentCarryingAmount us-gaap:CreditFacility, us-gaap:ShortTermDebtType

mime:SeniorSecuredRevolvingCreditFacility, us-gaap:LetterOfCredit


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2.22.22.52.22.02.02.03.73.83.93.83.9
Percentage of DebtInstrumentCarryingAmount12.612.614.312.60.00.00.00.00.00.00.00.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument

mime:TermLoan


Debt
Period End2021-06-302021-03-312020-03-31
Value858693
Percentage of DebtInstrumentCarryingAmount485.7496.60.0

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us-gaap:DeferredFinanceCostsNet

us-gaap:OtherAssets, mime:SeniorSecuredRevolvingCreditFacility


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value300000.0300000.0400000.0400000.0500000.0500000.0500000.0600000.0600000.0600000.0700000.0700000.0
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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mime:SeniorSecuredTermLoan


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value500000.0600000.0700000.0800000.0842000.0900000.0997000.01073000.01150000.01269000.01330000.01407000.0
Percentage of DeferredFinanceCostsNet166.7200.0175.0200.0168.4180.0199.4178.8191.7211.5190.0201.0

mime:SeniorSecuredTermLoanAndSeniorSecuredRevolvingCreditFacility


Deferred
Period End2021-06-302020-12-312020-09-30
Value540000.0687000.0765000.0
Percentage of DeferredFinanceCostsNet180.0171.8191.2

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value455227192.899
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDeferredIncome


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value1891000.02315000.01761000.02237000.02184000.0
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value8084635317
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value303035247.835
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value1612000.02042000.01247000.0109000.0462000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value5275000.04718000.04187000.04516000.01715000.0
Percentage of DeferredTaxAssetsPropertyPlantAndEquipment100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value2719000.02311000.01833000.01151000.0578000.0
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value3868000.02665000.03862000.03353000.02102000.0
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsResearch100.0100.0100.0100.0100.0

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Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value3527000.01786000.01211000.0742000.01062000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value149.5015.6872.763.406
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2021-03-312020-03-312019-03-31
Value5308000.06453000.04818000.0
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2021-03-312020-03-312019-03-31
Value737000.02145000.0606000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value7.8187.41413192.891
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings


Deferred
Period End2021-03-312020-03-312019-03-312018-03-31
Value574000.0362000.0320000.0115000.0
Percentage of DeferredTaxLiabilitiesUndistributedForeignEarnings100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value3223211511
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

mime:ServiceBasedVestingConditions


Employee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-31
Value4856535761654426
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeStockOption


Employee
Period End2021-06-302021-03-312020-12-31
Value403643
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized0.00.00.0

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1217783838643444445161313100.5
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized0.00.00.0174.1154.781.077.272.968.937.00.00.00.01.9

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value50000.0323000.0593000.0770000.0
Percentage of FinanceLeaseLiability100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value50000.0323000.0589000.0755000.0984000.01058000.0961000.0949000.0938000.0844000.0
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4000.015000.050000.0323000.0592000.0859000.01122000.01381000.0
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value51000.0326000.0601000.0785000.0
Percentage of FinanceLeaseLiabilityPaymentsDue100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear


Finance
Period End2021-06-302020-12-312020-09-30
Value51000.0275000.0459000.0
Percentage of FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value1000.03000.08000.015000.0
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value4.834.834.834.830.04830.0483
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value242219161312118.677.3015.8964.3233.052.2461.5630.064
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

mime:CapitalizedSoftwareAndOtherIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1412119.3248.167.7897.073
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization56.757.457.257.458.562.164.2

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value0.3620.3180.2850.2330.1930.1590.1310.1080.090.0730.0550.0380.0250.0210.006
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization1.51.41.41.41.41.31.21.21.21.21.31.21.11.39.4

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value109.1148.2286.6915.5974.5473.7523.0142.3491.7071.0930.5950.2510.2130.058
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization41.841.241.441.240.136.334.134.832.229.025.319.511.213.690.6

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

mime:PurchasedIntangibleAssets


Finite
Period End2021-03-312020-03-312019-12-312019-09-302019-06-302018-09-30
Value8.6810119.7559.60710
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0100.0100.0100.0100.0100.0

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-03-312020-03-312019-12-312019-09-302019-06-302018-09-30
Value0.0460.0540.1780.0320.0070.032
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive0.50.51.60.30.10.3

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

mime:PurchasedIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312018-03-31
Value4573000.04493000.04609000.04357000.03919000.03827000.02582000.0170000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312018-03-31
Value3876000.05039000.04898000.04403000.03272000.03998000.03522000.03061000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths84.8112.2106.3101.183.5104.5136.41800.6

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

mime:PurchasedIntangibleAssets


Finite
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value3430000.01152000.02178000.02940000.0783000.01304000.01941000.0533000.01097000.0128000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value3778000.01262000.02524000.03284000.01231000.02236000.02600000.0847000.01653000.02159000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear110.1109.5115.9111.7157.2171.5134.0158.9150.71686.7

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

mime:PurchasedIntangibleAssets


Finite
Period End2021-03-312020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value4278000.03701000.03074000.02548000.02519000.02083000.02143000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0100.0100.0100.0100.0100.0100.0

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-03-312020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value347000.0236000.0308000.0183000.099000.0506000.0471000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive8.16.410.07.23.924.322.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

mime:PurchasedIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4355000.04355000.04471000.04226000.03794000.03772000.03132000.02602000.02575000.02560000.02083000.02143000.0170000.0170000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value358000.01114000.01012000.0918000.0814000.0395000.01670000.01459000.0528000.0528000.01402000.01273000.0201000.0215000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour8.225.622.621.721.510.553.356.120.520.667.359.4118.2126.5

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

mime:PurchasedIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4433000.04433000.04549000.04300000.03865000.03827000.03132000.02602000.02575000.02560000.02083000.02143000.0170000.0170000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1130000.02078000.01970000.01703000.0974000.01676000.02760000.02479000.01397000.01420000.02736000.02615000.01623000.01725000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree25.546.943.339.625.243.888.195.354.355.5131.3122.0954.71014.7

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

mime:PurchasedIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4511000.04493000.04609000.04357000.03919000.03827000.03132000.02602000.02575000.02560000.02104000.02165000.0170000.0170000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2101000.03837000.03716000.03289000.02251000.02701000.04140000.03770000.02731000.02790000.03448000.03384000.02672000.02841000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo46.685.480.675.557.470.6132.2144.9106.1109.0163.9156.31571.81671.2

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsGross


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value66656561535045403636323210101.654
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

mime:CapitalizedSoftwareAndOtherIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value25252422181617
Percentage of FiniteLivedIntangibleAssetsGross38.338.537.336.535.133.137.9

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value0.9970.9841.0080.9660.7860.7710.7190.4650.4590.4550.4470.4540.1080.1080.108
Percentage of FiniteLivedIntangibleAssetsGross1.51.51.51.61.51.51.61.21.31.21.41.41.11.06.5

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value3939403734332724232319201.5461.5461.546
Percentage of FiniteLivedIntangibleAssetsGross60.260.061.261.963.465.360.459.865.264.660.962.115.014.393.5

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value32393635
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-06-302020-12-312020-09-30
Value301021
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:LiabilityForUncertainTaxPositionsCurrent

us-gaap:LiabilityForUncertainTaxPositionsCurrent


Liability
Period End2021-03-312020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value12100.00.06.06.26.06.06.24.9
Percentage of LiabilityForUncertainTaxPositionsCurrent100.0100.00.00.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity us-gaap:BusinessAcquisition, us-gaap:CreditFacility, us-gaap:SubsequentEventType

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

mime:MaestroPrivateLimited, mime:SeniorSecuredRevolvingCreditFacility, us-gaap:SubsequentEvent


Line
Period End2020-07-28
Value17
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity100.0

mime:MessageControl, mime:SeniorSecuredRevolvingCreditFacility, us-gaap:SubsequentEvent


Line
Period End2020-07-28
Value17
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity100.0

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

mime:SeniorSecuredRevolvingCreditFacility


Line
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-03-31
Value303030304846
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths us-gaap:CreditFacility

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

mime:SeniorSecuredTermLoan


Long
Period End2021-03-31
Value9375000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0

mime:SeniorSecuredTermLoanAndSeniorSecuredRevolvingCreditFacility


Long
Period End2021-06-302020-12-312020-09-30
Value10000000.09375000.09375000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths0.00.00.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree us-gaap:CreditFacility

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

mime:SeniorSecuredTermLoan


Long
Period End2021-03-31
Value85
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo us-gaap:CreditFacility

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

mime:SeniorSecuredTermLoan


Long
Period End2021-03-31
Value10.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0

mime:SeniorSecuredTermLoanAndSeniorSecuredRevolvingCreditFacility


Long
Period End2021-06-302020-12-312020-09-30
Value8510.010.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo0.00.00.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear us-gaap:CreditFacility

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear

mime:SeniorSecuredTermLoanAndSeniorSecuredRevolvingCreditFacility


Long
Period End2021-06-302020-12-312020-09-30
Value7500000.01875000.03750000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value4.574.584.614.710.04780.0474
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

us-gaap:OperatingLossCarryforwards

us-gaap:DomesticCountry, us-gaap:HerMajestysRevenueAndCustomsHMRC


Operating
Period End2021-03-312020-03-312019-03-312018-03-31
Value68705752
Percentage of OperatingLossCarryforwards100.0100.0100.0100.0

us-gaap:ForeignCountry, mime:UnitedStatesStateAndLocalIncomeTax


Operating
Period End2021-03-312020-03-312019-03-312018-03-31
Value34335439
Percentage of OperatingLossCarryforwards50.048.395.175.1

us-gaap:ForeignCountry, us-gaap:AustralianTaxationOffice


Operating
Period End2021-03-312020-03-312019-03-312018-03-31
Value26222317
Percentage of OperatingLossCarryforwards38.831.341.632.9

us-gaap:ForeignCountry, us-gaap:CanadaRevenueAgency


Operating
Period End2021-03-31
Value2.2
Percentage of OperatingLossCarryforwards3.2

us-gaap:ForeignCountry, us-gaap:FederalMinistryOfFinanceGermany


Operating
Period End2021-03-312020-03-312019-03-312018-03-31
Value109.99.92.4
Percentage of OperatingLossCarryforwards15.014.117.24.6

us-gaap:ForeignCountry, us-gaap:InternalRevenueServiceIRS


Operating
Period End2021-03-312020-03-312019-03-312018-03-31
Value63697856
Percentage of OperatingLossCarryforwards92.398.9136.9107.2

us-gaap:ForeignCountry, us-gaap:IsraelTaxAuthority


Operating
Period End2021-03-312020-03-312019-03-31
Value8.09.73.3
Percentage of OperatingLossCarryforwards11.713.85.7

us-gaap:OperatingLossCarryforwards us-gaap:StatementScenario, us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

mime:DoNotExpire, us-gaap:ForeignCountry, us-gaap:InternalRevenueServiceIRS


Operating
Period End2021-03-312020-03-31
Value2418
Percentage of OperatingLossCarryforwards35.125.6

mime:ExpiresAtVariousDates, us-gaap:ForeignCountry, us-gaap:InternalRevenueServiceIRS


Operating
Period End2021-03-312020-03-31
Value3951
Percentage of OperatingLossCarryforwards57.173.2

us-gaap:PrepaidExpenseCurrent

us-gaap:PrepaidExpenseCurrent


Prepaid
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value141111107.095
Percentage of PrepaidExpenseCurrent100.0100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostExpectedCost1 us-gaap:SubsequentEventType

us-gaap:RestructuringAndRelatedCostExpectedCost1

us-gaap:SubsequentEvent


Restructuring
Period End2021-01-28
Value3700000.0
Percentage of RestructuringAndRelatedCostExpectedCost1100.0

us-gaap:RestructuringReserve us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringReserve

us-gaap:EmployeeSeverance


Restructuring
Period End2021-06-302021-03-31
Value101000.0398000.0
Percentage of RestructuringReserve100.0100.0

us-gaap:RestructuringReserveCurrent

us-gaap:RestructuringReserveCurrent


Restructuring
Period End2021-03-312019-03-312018-03-31
Value398000.049000.0851000.0
Percentage of RestructuringReserveCurrent100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value116117989698979086
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligationPercentage

us-gaap:RevenueRemainingPerformanceObligationPercentage


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value53.054.057.058.00.560.540.540.530.510.510.510.510.52
Percentage of RevenueRemainingPerformanceObligationPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue


Share
Period End2021-06-302021-03-31
Value40.0338.62
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value38.6238.2237.8337.543.6443.1543.4243.2837.1536.8936.8832.623.0615.63
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice


Share
Period End2021-06-302020-12-312020-09-302020-03-31
Value30.7227.7526.1529.4
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value8943129837247876312514888147160134111
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested


Sharebased
Period End2021-06-302021-03-31
Value179105
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested us-gaap:AwardType

us-gaap:RestrictedStockUnitsRSU


Sharebased
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value10515212110745544254261615131.1610.629
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested100.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-30
Value58367957
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0100.0100.0100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

us-gaap:TaxCreditCarryforwardAmount

us-gaap:DomesticCountry, us-gaap:HerMajestysRevenueAndCustomsHMRC


Tax
Period End2021-03-312020-03-312019-03-31
Value2100000.01400000.01100000.0
Percentage of TaxCreditCarryforwardAmount100.0100.0100.0

us-gaap:ForeignCountry, us-gaap:IsraelTaxAuthority


Tax
Period End2021-03-312020-03-312019-03-31
Value500000.0900000.0600000.0
Percentage of TaxCreditCarryforwardAmount23.864.354.5

us-gaap:UndistributedEarningsOfForeignSubsidiaries

us-gaap:UndistributedEarningsOfForeignSubsidiaries


Undistributed
Period End2021-03-31
Value59
Percentage of UndistributedEarningsOfForeignSubsidiaries100.0

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
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:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Geographical
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical
(None,)
Property Plant And Equipment Netus-gaap: Statement Geographical
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:LongTermDebtCurrent
us-gaap:CreditFacility
(None,)
Long Term Debt Currentus-gaap: Credit Facility
us-gaap:LongTermDebtNoncurrent
us-gaap:CreditFacility
(None,)
Long Term Debt Noncurrentus-gaap: Credit Facility
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components