MGNX


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

Table of contents



us-gaap:CommonStockValue

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostsAndExpenses

us-gaap:GeneralAndAdministrativeExpense

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:OperatingIncomeLoss

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ResearchAndDevelopmentExpense

us-gaap:Revenues
us-gaap:CounterpartyName, us-gaap:ProductOrService
us-gaap:CounterpartyName, us-gaap:ProductOrService, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:ProductOrService

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:ConstructionInProgressGross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

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:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:PlanName

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:SubsidiarySaleOfStock
mgnx:CommonStockMaximumAmountAvailableForIssuance
us-gaap:SubsidiarySaleOfStock
mgnx:CommonStockMaximumAmountAvailableForIssuanceIncrease
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
mgnx:DevelopmentAndRegulatoryMilestonePaymentsUnderAgreementRecognized

mgnx:IncreaseDecreaseInLeaseLiabilities
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
mgnx:NonRefundableUpfrontFees
us-gaap:PlanName
mgnx:PercentageOfSharesOfCompanysCommonStockOutstandingForIncreaseInSharesReservedForIssuanceUnderStockPlan
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
mgnx:ProceedsfromRoyaltiesPercent

mgnx:ProceedsfromStockOptionsExercisedAndESPPPurchases
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
mgnx:RevenueMultipleDeliverableArrangementsDeterminationOfSellingPriceAmount
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
mgnx:RevenuesNetOfTaxWithholding

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:Depreciation

us-gaap:IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidExpense

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromStockOptionsExercised
us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock
us-gaap:SaleOfStockConsiderationReceivedOnTransaction
us-gaap:SubsidiarySaleOfStock
us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock
us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:Range
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
us-gaap:Range
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:TreasuryStockRetiredCostMethodAmount

us-gaap:UnrealizedGainLossOnInvestments
us-gaap:StatementEquityComponents
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
mgnx:CollaborativeAgreementTransactionPrice

mgnx:DeferredTaxAssetsOperatingLeaseLiabilities

mgnx:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets

mgnx:OperatingLossCarryforwardsNotSubjectToLimitation
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
mgnx:OptInFee
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
mgnx:PotentialCommercialMilestonePaymentsUnderAgreement
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
mgnx:PotentialDevelopmentandRegulatoryMilestonePaymentsUnderAgreement
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
mgnx:PotentialMilestonePaymentsAndRoyaltiesOnProductSales
us-gaap:CounterpartyName
mgnx:PotentialMilestonePaymentsandRoyaltiesonFutureSalesunderAgreement

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

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

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

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

us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByAssetClass
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiabilityNoncurrent
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredRevenueCurrent

us-gaap:DeferredRevenueNoncurrent

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
us-gaap:IncomeTaxAuthority
us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration
us-gaap:IncomeTaxAuthority, us-gaap:TaxPeriod

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:InventoryRawMaterials

us-gaap:InventoryWorkInProcess

us-gaap:InventoryWorkInProcessAndRawMaterials

us-gaap:Investments

us-gaap:LesseeOperatingLeaseDiscountRate

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:PrepaidExpenseCurrent
us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
us-gaap:SaleOfStockPricePerShare
us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock
us-gaap:SubsidiarySaleOfStock
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:IncomeTaxAuthority
us-gaap:TaxCreditCarryforwardAmount

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

Plots across concepts


IncomeStatement
Operating Income Loss
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Inventory Net
Current Assets
Inventory Net
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInInvestingActivities
Payments To Acquire Property Plant And Equipment
Shares
Weighted Average Number Of Share Outstanding Basic And Diluted
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:CommonStockValue ████▇▇▇▇▇▇▆▆▆▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▁0.6010.60.5620.5620.5340.4920.490.4890.4890.4880.4240.4220.4220.370.3690.3680.3670.350.3490.3480.3470.3450.3430.3420.3010.30.280.2780.2770.274990.2517750.021246NANA0.010989NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 60.068315NANANA50.018462NANANANANANANA42.15381336.93656NA36.77930535.78480434.958228NA34.7664436.01741134.503845NA33.33916330.05932931.684174NA27.75143727.65129726.262356NA21.2429781.2198841.148694NA21.502424NANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 60.068315NANANA50.018462NANANANANANANA42.15381336.93656NA36.77930535.78480434.958228NA34.7664434.61619734.503845NA33.33916330.05932929.415768NA27.75143727.65129726.262356NA1.1845071.2198841.148694NA1.092307NANA
us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted NA57.202846NA54.46341250.01846249.012663NA48.90276648.84523445.606651NA42.23932742.15381336.93656NA36.77930535.78480434.958228NA34.76644NA34.503845NANANANANANA27.65129726.262356NANA1.2198841.148694NANANANA
us-gaap:EarningsPerShareBasic -0.66NANANA-0.94NANANANANANANANANA2.87-1.28-1.14-1.08-1.0-0.971.17-0.88-0.83-0.46-0.711.53-0.69-0.14-0.44-0.12-0.140.14-0.24-2.93-1.920.00.00.0
us-gaap:EarningsPerShareDiluted -0.66NANANA-0.94NANANANANANANANANA2.8-1.28-1.14-1.08-1.0-0.971.12-0.88-0.83-0.46-0.711.42-0.69-0.14-0.44-0.12-0.140.01-0.24-2.93-1.920.00.00.0
us-gaap:EarningsPerShareBasicAndDiluted NA-0.9NA-0.66-0.94-0.91-0.62-0.91-0.65-0.99-1.06-0.81-1.03-1.342.96-1.28-1.14-1.08-1.0-0.97NA-0.88NANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:AllocatedShareBasedCompensationExpense █▆▅▇▅▃▆▆▄▁▃▃6.075.2865.2575.8325.0954.4915.495.3984.8843.7994.3524.573NANANANANANANANANANANANANANANANANANA0.4686010.135936NANA0.2095990.209599NANA
us-gaap:ComprehensiveIncomeNetOfTax ▃▁█▃▂▂▄▂▄▂-39.945-51.254-2.096-36.058-46.94-44.668-30.403-44.642-31.733-45.014NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold █▁0.0220.017NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostsAndExpenses ██▆▆█▇▇▆▇▆▆▆▇▆▅▅▅▄▄▄▄▄▄▃▃▃▂▂▂▂▂▁▁▁▁▁71.03668.17454.86154.38867.56759.12763.84756.68563.56257.27957.47255.80263.14854.90547.3949.38742.84540.26340.34437.5240.57933.47936.75930.12428.00626.14724.49522.3121.4817.82734118.11188713.07447412.55213.92968712.05506113.482587NANA
us-gaap:GeneralAndAdministrativeExpense ██▇▅▅▅▆▆▆▅▆▅▆▅▅▅▅▄▅▄▄▃▄▃▃▃▃▂▂▂▂▁▁▂▂▁15.23415.03612.5619.73210.21610.23311.8911.83312.12210.21910.5479.58411.1349.2358.4048.4038.3847.4629.2357.2247.2396.1336.7156.0215.3464.6834.8453.6784.1453.2585873.7637851.9865551.5033.83293.5471541.514334NANA
us-gaap:NetIncomeLoss ▂▁▃▂▁▁▂▁▂▁▁▂▁▁█▁▁▂▂▂▅▂▂▃▂▅▂▃▃▃▃▄▃▃▃▃▃▃-39.935-51.272-2.087-36.043-46.885-44.724-30.396-44.631-31.767-45.017-44.644-34.029-43.244-49.536105.727-47.043-40.654-37.655-34.783-33.84640.464-30.363-28.451-15.442-21.37645.129-19.018-3.928-12.259-3.108335-3.2056.603982-0.294-3.366-2.1052.6005143.5464.32
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarningsNA-51.272NA-36.043-46.885-44.724NA-44.631-31.767-45.017NANA-43.244-49.536NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ▂▁▃▂▁▁▂▂▁▁▂▂▁▁█▁▂▂▂▂▅▂▂▃▂▅▃▃▃▃▃▄▃▃▃▃-40.279-51.293-2.17-36.135-47.31-45.445-38.655-37.944-52.969-47.617-41.678-35.004-44.314-50.21104.969-47.724-41.179-38.208-35.238-34.26540.094-30.633-28.581-15.443-21.2945.132-19.019-3.928-12.26-3.108744-3.2054517.157594-0.254-3.33166-2.256522.598957NANA
us-gaap:OtherNonoperatingIncomeExpense ▃▃▃▃▃▃▅▁█▃▂▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃0.3440.0210.0830.0920.4250.7218.259-6.68721.2022.6-2.9660.9751.070.6740.7580.6810.5250.5530.4550.4190.370.270.130.001-0.086-0.0030.0010.00.0010.0004090.000467-0.553612-0.04-0.0342410.1516930.001557NANA
us-gaap:ProfitLoss -39.935NANANA-46.885NANA-44.631-31.767-45.017NA-34.029-43.244-49.536NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings-39.935NANANA-46.885NANA-44.631-31.767-45.017NA-34.029-43.244-49.536NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ResearchAndDevelopmentExpense █▇▆▆█▇▇▆▇▇▇▆▇▆▅▆▅▄▄▄▅▄▄▃▃▃▃▂▂▂▂▁▁▁▁▁55.7853.12142.344.65657.35148.89451.95744.85251.4447.0646.92546.21852.01445.6738.98640.98434.46132.80131.10930.29633.3427.34630.04424.10322.6621.46419.6518.63217.33514.56875414.34810211.08791911.04910.0967878.50790711.968253NANA
us-gaap:Revenues ▂▂▃▂▂▂▂▂▁▁▂▂▂▁█▁▁▁▁▁▅▁▁▂▁▄▁▂▁▂▂▂▁▁▁▂▂▂30.75716.88152.69118.25320.25713.68225.19218.74110.5939.66215.79420.79818.8344.695152.3591.6631.6662.0555.1063.25580.6732.8468.17814.6816.71671.2795.47618.3829.2214.71859714.90620.23206812.29910.5989.79916.08154417.43520.51
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:Assets ██▇▇▆▅▆▇▇█▆▇▇▆▇▅▅▅▆▆▇▆▇▇▅▅▃▄▄▄▂▁425.911435.445378.743374.38327.592265.413312.501351.451383.677414.638332.13355.356386.891326.078373.883241.845274.846274.721311.263339.864368.85325.657359.269384.089254.203278.07173.886193.625205.72210.172713125.78238141.975907NANA53.7469NANANA
us-gaap:Liabilities █▆▆▆▅▅▅▇▆▇▆▄▅▅▅▂▁▁▁▁▁▁▂▂▁▂▂▃▄▃▂▂106.86684.91482.85982.79579.80874.8481.87396.25389.22694.02189.25372.71274.85578.80274.64552.3843.49840.08342.51239.76238.87439.40245.93244.76342.51447.07752.654.53763.74156.95352546.86791346.024321NANA61.984208NANANA
us-gaap:LiabilitiesAndStockholdersEquity ██▇▇▆▅▆▇▇█▆▇▇▆▇▅▅▅▆▆▇▆▇▇▅▅▃▄▄▄▂▁425.911435.445378.743374.38327.592265.413312.501351.451383.677414.638332.13355.356386.891326.078373.883241.845274.846274.721311.263339.864368.85325.657359.269384.089254.203278.07173.886193.625205.72210.172713125.78238141.975907NANA53.7469NANANA
us-gaap:StockholdersEquity ▇█▇▇▆▅▆▆▇▇▆▇▇▆▇▅▆▆▆▇█▇▇█▅▆▃▄▄▄▃▁319.045350.531295.884291.585247.784190.573230.628255.198294.451320.617242.877282.644312.036247.276299.238189.465231.348234.638268.751300.102329.976286.255313.337339.326211.689230.993121.286139.088141.979153.21918878.914468-4.048414NANA-8.237308NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:AssetsCurrent ██▇▇▆▄▅▆▆▇▆▆▇▆▇▅▅▅▆▇▇▇▇█▅▆▄▄▄▄▃▁366.996374.719312.594310.068260.196195.285239.785276.233287.597335.033269.124285.642322.054271.039322.298209.466250.114251.007283.947316.286348.444309.266342.384370.495242.427268.47164.737186.959198.759202.404061119.45713336.953929NANA49.927008NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▄▅▄▅▄▂▃▄▄▅▅▅▅▅▅▂▃▁▂▃▂▄▄█▅▆▄▄▄▅▃▁▁▁▁▁188.97218.496181.131201.637196.53293.056126.472156.593180.316238.641220.128201.807238.661200.448211.72790.884116.62740.51884.098109.90162.267151.952196.172365.767235.027263.134157.591179.191194.014198.721816116.48140933.56919833.78143.52597747.74315530.451085NANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▆▇▅▆▆▁▃▄▅█▇▆188.97218.496181.131201.637196.53293.056126.472156.593180.316238.641220.128201.807NANA211.727NANANA84.098NANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent ▅▂▃▃▃▂▂▂▁▁▄▃▃▂▂▁▁▁▁▁█▁▁▁▁▁▁▁▁▁▁▁45.2487.14823.08118.77719.20511.80612.7449.5035.6136.11529.58320.9717.8367.28113.6432.1941.9912.0932.7643.00878.3752.5121.2242.7444.3341.7192.9355.3152.6451.745742.0040192.281282NANA2.046219NANANA
us-gaap:InventoryNet █▁6.4766.172NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▆█▁17.95618.22216.982NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA103.776NANANA97.936NANANA94.647NANANA78.902NANANA43.784NANANA35.031NANANA24.14NANANA20.56806919.643994NANA17.607293NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType mgnx:FurnitureAndOfficeEquipmentNANA0.713NANANA0.713NANANA0.668NANANA0.656NANANA0.897NANANA0.919NANANA0.751NANANA0.651NANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ComputerEquipmentNANA2.663NANANA2.43NANANA2.36NANANA2.261NANANA2.52NANANA3.069NANANA2.596NANANA2.3792542.172535NANA2.003706NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:EquipmentNANA41.202NANANA38.368NANANA36.062NANANA20.549NANANA20.208NANANA17.306NANANA13.917NANANA11.16661910.603598NANA8.74779NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNANA48.884NANANA48.675NANANA48.328NANANA17.525NANANA17.807NANANA11.936NANANA5.193NANANA4.893774.89377NANA4.881706NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:SoftwareAndSoftwareDevelopmentCostsNANA8.242NANANA7.513NANANA7.011NANANA5.111NANANA2.352NANANA1.801NANANA1.683NANANA1.4774161.323081NANA1.323081NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:VehiclesNANA0.05NANANA0.05NANANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ConstructionInProgressGross NANA2.022NANANA0.187NANANA0.218NANANA32.8NANANA0.0NANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA61.551NANANA49.725NANANA37.935NANANA28.919NANANA25.823NANANA20.19NANANA17.355NANANA15.53283715.174112NANA14.339497NANANA
us-gaap:PropertyPlantAndEquipmentNet ▆▆▆▆▆▆▇▇▇████▇▇▄▃▃▃▃▃▂▂▂▂▁▁▁▁▁▁▁39.39540.47542.22541.42343.88746.31848.21149.96652.29554.81856.71258.64957.49153.44349.98330.83823.17917.37617.96118.47318.29414.34714.84111.539.4127.2366.7855.6335.4425.0842895.0352324.469882NANA3.267796NANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA19.3NANANA20.220.917.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▄▄▅▅▅▅▅▅█▅▂▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁19.5220.25123.92422.88923.50923.8124.50525.25243.78524.7876.29411.0657.3461.5961.6021.5411.5531.361.3692.1042.1122.0442.0442.0642.0642.0642.0640.7331.1142.2795130.8851660.147246NANA0.147246NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:AccountsPayableCurrent ██▆▄▂▂▄▂▁▁▃▁▂█▂▂▂▁▃▁▁▁▃▂▂▁▂▄▃▄▃▂9.81810.3468.0314.382.7661.9564.3082.5430.8570.9254.0050.9861.76710.2662.4511.682.0881.5153.9951.3741.151.1182.9672.5411.8531.4441.6694.3883.9775.133053.1690341.798228NANA3.739125NANANA
us-gaap:AccruedLiabilitiesCurrent █▇▇▇▆▅▆▆▆▆▇██▆█▅▅▄▄▄▃▃▃▂▂▂▂▂▁▁▁▁39.17434.96534.19832.67430.47525.0627.13928.38930.4128.85233.02138.47737.18130.48938.58125.50122.31917.95716.13415.3712.3429.68711.7089.128.3057.0017.934.0313.312.7351533.5835520.939811NANA1.237025NANANA
us-gaap:ContractWithCustomerLiabilityCurrent ▆▁▁▃▃▃▄█▅▆▇16.5653.524.4569.2599.2679.50610.723.57114.44918.08521.721NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent █▆▅▅▅▄▅▆▅▆▇▅▅▅▅▃▃▂▂▂▁▁▂▂▂▂▂▂▃▃▂▂69.92453.04350.67350.12145.89439.6145.16757.63449.53551.77159.9448.02548.02749.95649.75532.43829.88926.55227.30222.05219.52917.80723.28822.38723.84724.12827.09425.98829.87229.38474128.82157125.265811NANA29.728094NANANA
us-gaap:OperatingLeaseLiabilityCurrent ██▇▇▆▆▆▆▇▇▁4.3674.2123.9883.8083.3863.0883.022.9563.6443.7340.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:OtherLiabilitiesNoncurrent ▄▄0.2580.258NA2.2451.4420.5150.0NANANANANANANANANANANANA0.7270.7270.7270.0NANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▇▇▇▇▇███▇▇▁23.20824.35325.2624.65125.65326.61527.55328.58224.27825.0430.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA6.94NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA6.796NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA5.856NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA5.084NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA7.764NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:StockholdersEquity ▇█▇▇▆▅▆▆▇▇▆▇▇▆▇▅▆▆▆▇█▇▇█▅▆▃▄▄▄▃▁319.045350.531295.884291.585247.784190.573230.628255.198294.451320.617242.877282.644312.036247.276299.238189.465231.348234.638268.751300.102329.976286.255313.337339.326211.689230.993121.286139.088141.979153.21918878.914468-4.048414NANA-8.237308NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▇█▆▅▄▁▃▄▆▇▃▅▆▃▆319.045350.531295.884291.585247.784190.573230.628255.198294.451320.617242.877282.643312.036247.276299.238NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CommonStockValue ████▇▇▇▇▇▇▆▆▆▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▁0.6010.60.5620.5620.5340.4920.490.4890.4890.4880.4240.4220.4220.370.3690.3680.3670.350.3490.3480.3470.3450.3430.3420.3010.30.280.2780.2770.274990.2517750.021246NANA0.010989NANANA
us-gaap:AdditionalPaidInCapitalCommonStock ██▇▇▆▅▅▅▅▅▄▄▄▃▃▃▃▂▂▂▂▂▂▂▁1181.4711173.0131067.151060.755980.924876.815872.204866.372860.983855.417732.727727.849723.196615.284611.27607.191602.085564.766561.198557.667553.655550.407547.185544.719401.681NA335.071NANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▁▁▂▂▂▃▃▄▄▄▅▅▆▆▇▅▆▆▇▇▇▇▇█████████-863.028-823.093-771.821-769.734-733.691-686.806-642.082-611.686-567.055-535.288-490.271-445.627-411.599-368.355-312.34-418.067-371.024-330.37-292.714-257.931-224.085-264.549-234.186-205.735-190.293-168.917-214.046-195.028-191.1-178.841573-175.733238-172.528254NANA-175.472403NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues NA98.2NA73.98196.512NANANANA118.657NANA103.259NANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapitalNA98.164NA73.95696.472NANANANA118.594NANA103.207NANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:CommonStockNA0.036NA0.0250.04NANANANA0.063NANA0.052NANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▁6.1135.243NA5.7965.1364.451NA5.3524.9333.75NA4.5224.2093.386NANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▄█▅▃▂▃▆▁▄▄-45.69-29.036-5.533-25.677-36.546-44.142-38.044-17.388-48.838-30.0-27.228NANANANANANANANANANANANANANANANANANANA-1.183683NANANA17.69946NANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▃▄▃█▆▆▅▅▁█13.818-34.257-16.075-43.28141.00710.5647.626-6.372-10.12-70.49245.074NANANANANANANANANANANANANANANANANANANA-0.924076NANANA-0.409907NANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▇▁▅▇▁▁▁▁█▁2.346100.6581.10274.06399.0150.1620.2970.0370.633119.0050.475NANANANANANANANANANANANANANANANANANANA85.01997NANANA0.002517NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▂▅▃▄█▂▂▂▁▄▄-29.52637.365-20.5065.105103.476-33.416-30.121-23.723-58.32518.51318.321NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:DepreciationDepletionAndAmortization █▁2.7812.729NANA3.2962.8092.7262.6362.582.9033.0112.7281.2021.3381.3421.9052.0031.9781.9742.0771.7861.771NANANANANANANANA0.3653850.316852NANA0.2775040.235543NANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▆▄▅▄▅▄▅▅▄▃▅▅▅▄▅▄▄▄▄▁█▅▄▄▅▄▄▅▅▄▄▄▅▅▄38.1-15.9344.304-0.4287.399-0.9383.2413.891-0.503-23.4688.6133.13410.555-6.36111.4480.203-0.102-0.671-0.244-75.36775.8641.287-1.52-1.592.615-1.216-2.382.670.899279-0.258279-0.277263-1.8719371.8310950.275905-4.065079NANANA
us-gaap:IncreaseDecreaseInInventories ▁█0.3046.172NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▄█▅▃▂▃▆▁▄▄-45.69-29.036-5.533-25.677-36.546-44.142-38.044-17.388-48.838-30.0-27.228NANANANANANANANANANANANANANANANANANANA-1.183683NANANA17.69946NANANA
us-gaap:NetIncomeLoss ▂▁▃▂▁▁▂▁▂▁▁▂▁▁█▁▁▂▂▂▅▂▂▃▂▅▂▃▃▃▃▄▃▃▃▃▃▃-39.935-51.272-2.087-36.043-46.885-44.724-30.396-44.631-31.767-45.017-44.644-34.029-43.244-49.536105.727-47.043-40.654-37.655-34.783-33.84640.464-30.363-28.451-15.442-21.37645.129-19.018-3.928-12.259-3.108335-3.2056.603982-0.294-3.366-2.1052.6005143.5464.32
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarningsNA-51.272NA-36.043-46.885-44.724NA-44.631-31.767-45.017NANA-43.244-49.536NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss -39.935NANANA-46.885NANA-44.631-31.767-45.017NA-34.029-43.244-49.536NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings-39.935NANANA-46.885NANA-44.631-31.767-45.017NA-34.029-43.244-49.536NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ShareBasedCompensation █▇▇█▇▆▇▇▇▅▆▆▆▅▅▆▅▅▄▄▅▄▃▃▃▃▂▂▂▂▁▁▁▁▁6.075.2865.2575.8325.0964.4915.495.3984.8843.7994.3524.5734.1633.4323.684.0013.6023.4613.0393.0033.1233.0012.2162.0981.9021.6310.9950.8560.7810.6116040.4686010.1370.1120.1448720.209599NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▃▄▃█▆▆▅▅▁█13.818-34.257-16.075-43.28141.00710.5647.626-6.372-10.12-70.49245.074NANANANANANANANANANANANANANANANANANANA-0.924076NANANA-0.409907NANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▁▃▁▁▁▁▁▁▂▁▃▄█▆▆▄▂▁▂▄▂▂▂▂▁▂▁▁▁▁▁▁▁▁2.0670.6263.560.4990.5941.2531.2470.780.5871.6750.7154.2165.50414.51910.7589.857.3031.4921.0621.985.5082.8312.782.6082.8120.9971.6580.6720.7947250.4472750.9240761.16070.4509060.4250940.409907NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▇▁▅▇▁▁▁▁█▁2.346100.6581.10274.06399.0150.1620.2970.0370.633119.0050.475NANANANANANANANANANANANANANANANANANANA85.01997NANANA0.002517NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value601000.0600000.0562000.0562000.0534000.0492000.0490000.0489000.0489000.0488000.0424000.0422000.0422000.0370000.0369000.0368000.0367000.0350000.0349000.0348000.0347000.0345000.0343000.0342000.0301000.0300000.0280000.0278000.0277000.0274990.0251780.021246.010989.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.20.20.20.20.10.10.10.10.10.10.10.10.20.10.10.10.10.10.10.10.10.10.10.20.10.10.10.20.10.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302020-06-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value60504236363534343634333031272726211.2198841.14869421
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 End2021-06-302020-06-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value605042363635343434343330292727261.1845071.2198841.1486941.092307
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Share Outstanding Basic And Diluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted


Weighted
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-03-312014-06-302014-03-312013-06-302013-03-31
Value57545049484845424236363534343427261.2198841.148694
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302020-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-0.66-0.942.87-1.28-1.14-1.08-1.0-0.971.17-0.88-0.83-0.46-0.711.53-0.69-0.14-0.44-0.12-0.140.14-0.24-2.93-1.92000
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302020-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-0.66-0.942.8-1.28-1.14-1.08-1.0-0.971.12-0.88-0.83-0.46-0.711.42-0.69-0.14-0.44-0.12-0.140.01-0.24-2.93-1.92000
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Earnings Per Share Basic And Diluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:EarningsPerShareBasicAndDiluted


Earnings
Period End2021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-31
Value-0.9-0.66-0.94-0.91-0.62-0.91-0.65-0.99-1.06-0.81-1.03-1.342.96-1.28-1.14-1.08-1.0-0.97-0.88
Percentage of EarningsPerShareBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302013-12-312013-09-302012-12-312012-09-30
Value6.075.2865.2575.8325.0954.4915.495.3984.8843.7994.3524.5730.4686010.1359360.2095990.209599
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues19.731.310.032.025.232.821.828.846.139.327.622.03.10.72.11.3

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:GeneralAndAdministrativeExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value3.0122.5592.5062.7732.5062.0572.4992.6332.4311.9852.782.1332.1741.7321.8041.9951.7691.7881.5041.61.6781.6051.21.1821.0210.8210.4950.4760.4160.2950710.245740.0240480.0330.0523170.0916460.091647
Percentage of AllocatedShareBasedCompensationExpense49.648.447.747.549.245.845.548.849.852.363.946.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.052.417.70.00.043.743.7
Percentage of Revenues9.815.24.815.212.415.09.914.022.920.517.610.311.536.91.2120.0106.287.029.549.22.156.414.78.115.21.29.02.64.52.01.60.10.30.50.90.6
Percentage of Revenues us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value3.0582.7272.7513.0592.5892.4342.9912.7652.4531.8141.5722.441.9891.71.8762.0061.8331.6731.5351.4031.4451.3961.0160.9160.8810.810.50.380.3650.3165330.2228610.1118880.0790.0925550.1179530.117952
Percentage of AllocatedShareBasedCompensationExpense50.451.652.352.550.854.254.551.250.247.736.153.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.047.682.30.00.056.356.3
Percentage of Revenues9.916.25.216.812.817.811.914.823.218.810.011.710.636.21.2120.6110.081.430.143.11.849.112.46.213.11.19.12.14.02.21.50.60.60.91.20.7
Percentage of Revenues us-gaap:ResearchAndDevelopmentExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-39945000.0-51254000.0-2096000.0-36058000.0-46940000.0-44668000.0-30403000.0-44642000.0-31733000.0-45014000.0
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-129.9-303.6-4.0-197.5-231.7-326.5-120.7-238.2-299.6-465.9

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-31
Value22000.017000.0
Percentage of CostOfGoodsAndServicesSold100.0100.0
Percentage of Revenues0.10.1

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value716854546759635663575755635447494240403740333630282624222117181312131213
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues231.0403.9104.1298.0333.5432.2253.4302.5600.0592.8363.9268.3335.31169.431.12969.82571.71959.3790.11152.750.31176.4449.5205.2417.036.7447.3121.4233.0121.1121.564.6102.1131.4123.083.8

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value1515129.732101011111210109.584119.2358.4048.4038.3847.4629.2357.2247.2396.1336.7156.0215.3464.6834.8453.6784.1453.2585873.7637851.9865551.5033.83293.5471541.514334
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues49.589.123.853.350.474.847.263.1114.4105.866.846.159.1196.75.5505.3503.2363.1180.9221.99.0215.582.141.079.66.688.520.045.022.125.39.812.236.236.29.4

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-39.935-51.272-2.087-36.043-46.885-44.724-30.396-44.631-31.767-45.017-44.644-34.029-43.244-49.536105-47.043-40.654-37.655-34.783-33.84640-30.363-28.451-15.442-21.37645-19.018-3.928-12.259-3.108335-3.2056.603982-0.294-3.366-2.1052.6005143.5464.32
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-129.8-303.7-4.0-197.5-231.5-326.9-120.7-238.1-299.9-465.9-282.7-163.6-229.6-1055.169.4-2828.8-2440.2-1832.4-681.2-1039.850.2-1066.9-347.9-105.2-318.363.3-347.3-21.4-133.0-21.1-21.532.6-2.4-31.8-21.516.220.321.1

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value-51.272-36.043-46.885-44.724-44.631-31.767-45.017-43.244-49.536
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-303.7-197.5-231.5-326.9-238.1-299.9-465.9-229.6-1055.1
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-40.279-51.293-2.17-36.135-47.31-45.445-38.655-37.944-52.969-47.617-41.678-35.004-44.314-50.21104-47.724-41.179-38.208-35.238-34.26540-30.633-28.581-15.443-21.2945-19.019-3.928-12.26-3.108744-3.2054517.157594-0.254-3.33166-2.256522.598957
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-131.0-303.9-4.1-198.0-233.5-332.2-153.4-202.5-500.0-492.8-263.9-168.3-235.3-1069.468.9-2869.8-2471.7-1859.3-690.1-1052.749.7-1076.4-349.5-105.2-317.063.3-347.3-21.4-133.0-21.1-21.535.4-2.1-31.4-23.016.2

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.3440.0210.0830.0920.4250.7218.259-6.687212.6-2.9660.9751.070.6740.7580.6810.5250.5530.4550.4190.370.270.130.001-0.086-0.0030.0010.00.0010.0004090.000467-0.553612-0.04-0.0342410.1516930.001557
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.10.10.20.52.15.332.8-35.7200.226.9-18.84.75.714.40.541.031.526.98.912.90.59.51.60.0-1.3-0.00.00.00.00.00.0-2.7-0.3-0.31.50.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-39935000.0-46885000.0-44631000.0-31767000.0-45017000.0-34029000.0-43244000.0-49536000.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-129.8-231.5-238.1-299.9-465.9-163.6-229.6-1055.1

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Profit
Period End2021-06-302020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-39935000.0-46885000.0-44631000.0-31767000.0-45017000.0-34029000.0-43244000.0-49536000.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-129.8-231.5-238.1-299.9-465.9-163.6-229.6-1055.1
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value555342445748514451474646524538403432313033273024222119181714141111108.50790711
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues181.4314.780.3244.7283.1357.4206.2239.3485.6487.1297.1222.2276.2972.725.62464.52068.51596.2609.3930.841.3960.9367.4164.2337.430.1358.8101.4188.099.096.354.889.895.386.874.4

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3016521820132518109.6621520184.6951521.6631.6662.0555.1063.255802.8468.178146.716715.476189.2214142012109.799161720
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:CounterpartyName, us-gaap:ProductOrService

mgnx:NationalInstituteOfAllergyAndInfectiousDiseases, mgnx:RevenuesFromGrants


Revenuesus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.40.80.84.60.70.80.60.20.20.20.20.40.4
Percentage of Revenues1.34.74.422.75.14.35.72.11.01.14.324.124.0
Percentage of Revenues1.34.74.422.75.14.35.72.11.01.14.324.124.0
Percentage of Revenues mgnx:NationalInstituteOfAllergyAndInfectiousDiseases mgnx:RevenuesFromGrants100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:CounterpartyName, us-gaap:ProductOrService, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:IncyteCorporation, mgnx:RevenuesFromLicenseAgreements, mgnx:IncyteMGA012AgreementServices


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.71.55.94.94.24.0169.90.0
Percentage of Revenues3.87.443.126.139.641.476.952.60.0
Percentage of Revenues3.87.443.126.139.641.476.952.60.0
Percentage of Revenues mgnx:IncyteCorporation mgnx:RevenuesFromLicenseAgreements mgnx:IncyteMGA012AgreementServices100.0100.0100.0100.0100.0100.0100.0100.00.0

mgnx:IncyteCorporation, mgnx:RevenuesFromLicenseAgreements, mgnx:IncyteMGA012ClinicalServices


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.70.11.55.9
Percentage of Revenues2.30.67.443.1
Percentage of Revenues2.30.67.443.1
Percentage of Revenues mgnx:IncyteCorporation mgnx:RevenuesFromLicenseAgreements mgnx:IncyteMGA012ClinicalServices100.0100.0100.0100.0

mgnx:IncyteCorporation, mgnx:RevenuesFromLicenseAgreements, mgnx:IncyteMGA012SupplyAgreement


Revenuesus-gaap:
Period End2021-06-302021-03-31
Value2.83.1
Percentage of Revenues9.118.4
Percentage of Revenues9.118.4
Percentage of Revenues mgnx:IncyteCorporation mgnx:RevenuesFromLicenseAgreements mgnx:IncyteMGA012SupplyAgreement100.0100.0

mgnx:JanssenBiotechInc, mgnx:RevenueFromPerformanceOfTheResearchAndDevelopmentActivities, mgnx:JanssenCollaborationAndLicenseAgreement


Revenuesus-gaap:
Period End2021-06-302021-03-31
Value0.60.3
Percentage of Revenues2.01.8
Percentage of Revenues2.01.8
Percentage of Revenues mgnx:JanssenBiotechInc mgnx:RevenueFromPerformanceOfTheResearchAndDevelopmentActivities mgnx:JanssenCollaborationAndLicenseAgreement100.0100.0

mgnx:JanssenBiotechInc, mgnx:RevenuesFromLicenseAgreements, mgnx:JanssenCollaborationAndLicenseAgreement


Revenuesus-gaap:
Period End2020-12-31
Value20
Percentage of Revenues38.0
Percentage of Revenues0.0
Percentage of Revenues mgnx:JanssenBiotechInc mgnx:RevenuesFromLicenseAgreements mgnx:JanssenCollaborationAndLicenseAgreement100.0

us-gaap:Revenues us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:IMabBiopharma, mgnx:IMabBiopharmaCollaborationAndLicenseAgreement


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value1.70.6-1.41.01.41.11.21.10.0
Percentage of Revenues5.53.6-2.75.56.98.04.85.90.0
Percentage of Revenues5.53.6-2.75.56.98.04.85.90.0
Percentage of Revenues mgnx:IMabBiopharma mgnx:IMabBiopharmaCollaborationAndLicenseAgreement100.0100.0100.0100.0100.0100.0100.0100.00.0

mgnx:ZaiLab, mgnx:A2021ZaiLabAgreements


Revenuesus-gaap:
Period End2021-06-30
Value14
Percentage of Revenues46.8
Percentage of Revenues46.8
Percentage of Revenues mgnx:ZaiLab mgnx:A2021ZaiLabAgreements100.0

mgnx:ZaiLab, mgnx:ZaiLabClinicalSupplyAgreements


Revenuesus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.51.10.50.31.01.20.0
Percentage of Revenues1.66.52.71.57.36.40.0
Percentage of Revenues1.66.52.71.57.36.40.0
Percentage of Revenues mgnx:ZaiLab mgnx:ZaiLabClinicalSupplyAgreements100.0100.0100.0100.0100.0100.00.0

us-gaap:Revenues us-gaap:ProductOrService

mgnx:RevenueFromCollaborativeAgreements


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value27155117151224179.9879.4971420184.5011521.0761.081
Percentage of Revenues88.389.998.295.477.294.897.596.094.398.394.899.198.595.999.864.764.9
Percentage of Revenues88.389.998.295.477.294.897.596.094.398.394.899.198.595.999.864.764.9
Percentage of Revenues mgnx:RevenueFromCollaborativeAgreements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mgnx:RevenueFromGovernmentAgreements


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.3860.810.9450.8384.6210.7150.6360.7570.6060.1650.820.1810.2820.1940.2780.5870.585
Percentage of Revenues1.34.81.84.622.85.22.54.05.71.75.20.91.54.10.235.335.1
Percentage of Revenues1.34.81.84.622.85.22.54.05.71.75.20.91.54.10.235.335.1
Percentage of Revenues mgnx:RevenueFromGovernmentAgreements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Product


Revenuesus-gaap:
Period End2021-06-302021-03-31
Value3.2030.887
Percentage of Revenues10.45.3
Percentage of Revenues10.45.3
Percentage of Revenues us-gaap:Product100.0100.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value4254353783743272653123513834143323553863263732412742743113393683253593842542781731932052101254153
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value1068482827974819689948972747874524340423938394544424752546356464661
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.119.521.922.124.428.226.227.423.322.726.920.519.324.220.021.715.814.613.711.710.512.112.811.716.716.930.228.231.027.137.3109.6115.3

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value4254353783743272653123513834143323553863263732412742743113393683253593842542781731932052101254153
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-312010-12-31
Value31935029529124719023025529432024228231224729918923123426830032928631333921123012113914115378-4.048414-8.237308-17.484284-38.634058
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets74.980.578.177.975.671.873.872.676.777.373.179.580.775.880.078.384.285.486.388.389.587.987.288.383.383.169.871.869.072.962.7-9.6-15.30.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-0.0070.016-0.003-0.061-0.082-0.0050.00.00.0
Percentage of StockholdersEquity-0.00.0-0.0-0.0-0.0-0.00.00.0-0.0
Percentage of Assets-0.00.0-0.0-0.0-0.0-0.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1067872732611561547335254164163149
Percentage of StockholdersEquity360.7378.2301.7204.3208.8174.6276.3322.4-1995.0-934.8-386.2
Percentage of Assets281.8279.1220.6163.5180.3152.3192.7202.3305.80.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value0.5620.490.4240.3690.3490.3430.280.2517750.0109890.010490.010007
Percentage of StockholdersEquity0.20.20.20.10.10.10.20.3-0.1-0.1-0.0
Percentage of Assets0.10.20.10.10.10.10.20.20.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value-771.821-642.082-490.271-312.34-292.714-234.186-214.046-175.733238-175.472403-183.834158-190.551278
Percentage of StockholdersEquity-260.9-278.4-201.9-104.4-108.9-74.7-176.5-222.72130.21051.4493.2
Percentage of Assets-203.8-205.5-147.6-83.5-94.0-65.2-123.1-139.7-326.50.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value3663743123102601952392762873352692853222713222092502512833163483093423702422681641861982021193649
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets86.286.182.582.879.473.676.778.675.080.881.080.483.283.186.286.691.091.491.293.194.595.095.396.595.496.594.796.696.696.395.088.092.9

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312010-12-31
Value188218181201196931261561802382202012382002119011640841096215119636523526315717919419811633334347305536
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets44.450.247.853.960.035.140.544.647.057.666.356.861.761.556.637.642.414.727.032.316.946.754.695.292.594.690.692.594.394.692.680.00.00.088.80.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312016-12-31
Value1882181812011969312615618023822020121184
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets44.450.247.853.960.035.140.544.647.057.666.356.856.627.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value457.14823181911129.5035.6136.1152920177.281132.1941.9912.0932.7643.008782.5121.2242.7444.3341.7192.9355.3152.6451.745742.0040192.2812822.046219
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.61.66.15.05.94.44.12.71.51.58.95.94.62.23.60.90.70.80.90.921.20.80.30.71.70.61.72.71.30.81.65.43.8

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-31
Value6476000.06172000.0
Percentage of InventoryNet100.0100.0
Percentage of Assets1.51.4

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-31
Value171816
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0
Percentage of Assets4.24.24.5

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302012-12-31
Value103979478433524201917
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.431.328.521.114.19.813.916.446.832.8

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

mgnx:FurnitureAndOfficeEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value0.7130.7130.6680.6560.8970.9190.7510.651
Percentage of PropertyPlantAndEquipmentGross0.70.70.70.82.02.63.13.2
Percentage of Assets0.20.20.20.20.30.30.40.5
Percentage of Assets mgnx:FurnitureAndOfficeEquipment0.00.00.00.00.00.00.00.0

us-gaap:ComputerEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302012-12-31
Value2.6632.432.362.2612.523.0692.5962.3792542.1725352.003706
Percentage of PropertyPlantAndEquipmentGross2.62.52.52.95.88.810.811.611.111.4
Percentage of Assets0.70.80.70.60.80.91.51.95.23.7
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.00.00.00.00.00.00.0

us-gaap:Equipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302012-12-31
Value4138362020171311108.74779
Percentage of PropertyPlantAndEquipmentGross39.739.238.126.046.249.457.754.354.049.7
Percentage of Assets10.912.310.95.56.54.88.08.925.316.3
Percentage of Assets us-gaap:Equipment0.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302012-12-31
Value4848481717115.1934.893774.893774.881706
Percentage of PropertyPlantAndEquipmentGross47.149.751.122.240.734.121.523.824.927.7
Percentage of Assets12.915.614.64.75.73.33.03.911.79.1
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.0

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302012-12-31
Value8.2427.5137.0115.1112.3521.8011.6831.4774161.3230811.323081
Percentage of PropertyPlantAndEquipmentGross7.97.77.46.55.45.17.07.26.77.5
Percentage of Assets2.22.42.11.40.80.51.01.23.22.5
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.00.00.00.00.00.00.00.0

us-gaap:Vehicles


Property
Period End2020-12-312019-12-312018-12-31
Value0.050.050.0
Percentage of PropertyPlantAndEquipmentGross0.00.10.0
Percentage of Assets0.00.00.0
Percentage of Assets us-gaap:Vehicles0.00.00.0

Construction In Progress Gross

us-gaap:ConstructionInProgressGross

us-gaap:ConstructionInProgressGross


Construction
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2.0220.1870.218320.0
Percentage of ConstructionInProgressGross100.0100.0100.0100.00.0
Percentage of Assets0.50.10.18.80.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302012-12-31
Value61493728252017151514
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.315.911.47.78.35.610.012.336.126.7

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value3940424143464849525456585753493023171718181414119.4127.2366.7855.6335.4425.0842895.0352324.4698823.267796
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.29.311.111.113.417.515.414.213.613.217.116.514.916.413.412.88.46.35.85.45.04.44.13.03.72.63.92.92.62.44.010.66.1

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-01-01
Value1920201716
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0
Percentage of Assets5.16.55.94.50.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value192023222323242543246.294117.3461.5961.6021.5411.5531.361.3692.1042.1122.0442.0442.0642.0642.0642.0640.7331.1142.2795130.8851660.1472460.147246
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.64.76.36.17.29.07.87.211.46.01.93.11.90.50.40.60.60.50.40.60.60.60.60.50.80.71.20.40.51.10.70.40.3

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value9.818108.0314.382.7661.9564.3082.5430.8570.9254.0050.9861.767102.4511.682.0881.5153.9951.3741.151.1182.9672.5411.8531.4441.6694.3883.9775.133053.1690341.7982283.739125
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.32.42.11.20.80.71.40.70.20.21.20.30.53.10.70.70.80.61.30.40.30.30.80.70.70.51.02.31.92.42.54.37.0

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value3934343230252728302833383730382522171615129.687119.128.3057.0017.934.0313.312.7351533.5835520.9398111.237025
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.28.09.08.79.39.48.78.17.97.09.910.89.69.410.310.58.16.55.24.53.33.03.32.43.32.54.62.11.61.32.82.22.3

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value163.524.4569.2599.2679.5061023141821
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.90.81.22.52.83.63.46.73.84.46.5

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:IMabBiopharma, mgnx:IMabBiopharmaCollaborationAndLicenseAgreement


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.43.54.54.34.34.34.44.4
Percentage of ContractWithCustomerLiabilityCurrent20.599.4101.046.446.445.241.118.7
Percentage of Assets0.80.81.21.11.31.61.41.3
Percentage of Assets mgnx:IMabBiopharma mgnx:IMabBiopharmaCollaborationAndLicenseAgreement0.00.00.00.00.00.00.00.0

mgnx:ZaiLab, mgnx:A2021ZaiLabAgreements


Contract
Period End2021-06-30
Value13
Percentage of ContractWithCustomerLiabilityCurrent79.7
Percentage of Assets3.1
Percentage of Assets mgnx:ZaiLab mgnx:A2021ZaiLabAgreements0.0

mgnx:ZaiLab, mgnx:ZaiLabCollaborationAndLicenseAgreement


Contract
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5.05.05.05.09.08.11216
Percentage of ContractWithCustomerLiabilityCurrent54.054.052.646.738.256.166.974.1
Percentage of Assets1.31.51.91.62.62.12.94.8
Percentage of Assets mgnx:ZaiLab mgnx:ZaiLabCollaborationAndLicenseAgreement0.00.00.00.00.00.00.00.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value695350504539455749515948484949322926272219172322232427252929282529
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.412.213.413.414.014.914.516.412.912.518.013.512.415.313.313.410.99.78.86.55.35.56.55.89.48.715.613.414.514.022.960.255.3

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4367000.04212000.03988000.03808000.03386000.03088000.03020000.02956000.03644000.03734000.00
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.01.01.11.01.01.21.00.80.90.90.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312016-09-302016-06-302016-03-312015-12-31
Value258000.0258000.02245000.01442000.0515000.00727000.0727000.0727000.00
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.00.0100.0100.0100.00.0
Percentage of Assets0.10.10.60.40.20.00.20.20.20.0

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value232425242526272824250.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets5.45.66.76.67.810.08.88.16.36.00.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value6940000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets1.8

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value6796000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets1.8

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value5856000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets1.5

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value5084000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets1.3

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value7764000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets2.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-01-01
Value2930312727
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets7.79.89.07.30.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value39
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets10.3

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value9918000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets2.6

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-312010-12-31
Value31935029529124719023025529432024228231224729918923123426830032928631333921123012113914115378-4.048414-8.237308-17.484284-38.634058
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets74.980.578.177.975.671.873.872.676.777.373.179.580.775.880.078.384.285.486.388.389.587.987.288.383.383.169.871.869.072.962.7-9.6-15.30.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-0.0070.016-0.003-0.061-0.082-0.0050.00.00.0
Percentage of StockholdersEquity-0.00.0-0.0-0.0-0.0-0.00.00.0-0.0
Percentage of Assets-0.00.0-0.0-0.0-0.0-0.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1067872732611561547335254164163149
Percentage of StockholdersEquity360.7378.2301.7204.3208.8174.6276.3322.4-1995.0-934.8-386.2
Percentage of Assets281.8279.1220.6163.5180.3152.3192.7202.3305.80.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value0.5620.490.4240.3690.3490.3430.280.2517750.0109890.010490.010007
Percentage of StockholdersEquity0.20.20.20.10.10.10.20.3-0.1-0.1-0.0
Percentage of Assets0.10.20.10.10.10.10.20.20.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value-771.821-642.082-490.271-312.34-292.714-234.186-214.046-175.733238-175.472403-183.834158-190.551278
Percentage of StockholdersEquity-260.9-278.4-201.9-104.4-108.9-74.7-176.5-222.72130.21051.4493.2
Percentage of Assets-203.8-205.5-147.6-83.5-94.0-65.2-123.1-139.7-326.50.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value319350295291247190230255294320242282312247299
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets74.980.578.177.975.671.873.872.676.777.373.179.580.775.880.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1181117310671060980876872866860855732727723615611
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest370.3334.6360.7363.8395.9460.1378.2339.5292.4266.8301.7257.5231.8248.8204.3
Percentage of Assets277.4269.4281.8283.3299.4330.4279.1246.5224.4206.3220.6204.8186.9188.7163.5
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.0010.011-0.0070.0020.0170.0720.0160.0230.0340.0-0.0030.00.017-0.023-0.061
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.0-0.00.00.00.00.00.00.00.0-0.00.00.0-0.0-0.0
Percentage of Assets0.00.0-0.00.00.00.00.00.00.00.0-0.00.00.0-0.0-0.0
Percentage of Assets us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.6010.60.5620.5620.5340.4920.490.4890.4890.4880.4240.4220.4220.370.369
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.20.20.20.20.20.30.20.20.20.20.20.10.10.10.1
Percentage of Assets0.10.10.10.20.20.20.20.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-863.028-823.093-771.821-769.734-733.691-686.806-642.082-611.686-567.055-535.288-490.271-445.628-411.599-368.355-312.34
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-270.5-234.8-260.9-264.0-296.1-360.4-278.4-239.7-192.6-167.0-201.9-157.7-131.9-149.0-104.4
Percentage of Assets-202.6-189.0-203.8-205.6-224.0-258.8-205.5-174.0-147.8-129.1-147.6-125.4-106.4-113.0-83.5
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value601000.0600000.0562000.0562000.0534000.0492000.0490000.0489000.0489000.0488000.0424000.0422000.0422000.0370000.0369000.0368000.0367000.0350000.0349000.0348000.0347000.0345000.0343000.0342000.0301000.0300000.0280000.0278000.0277000.0274990.0251780.021246.010989.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.20.20.20.20.10.10.10.10.10.10.10.10.20.10.10.10.10.10.10.10.10.10.10.20.10.10.10.20.10.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value1181117310671060980876872866860855732727723615611607602564561557553550547544401335
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets277.4269.4281.8283.3299.4330.4279.1246.5224.4206.3220.6204.8186.9188.7163.5251.1219.1205.6180.3164.1150.1169.0152.3141.8158.0192.7

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value-863030000.0-823090000.0-771820000.0-769730000.0-733690000.0-686810000.0-642080000.0-611690000.0-567060000.0-535290000.0-490270000.0-445630000.0-411600000.0-368360000.0-312340000.0-418070000.0-371020000.0-330370000.0-292710000.0-257930000.0-224080000.0-264550000.0-234190000.0-205740000.0-190290000.0-168920000.0-214050000.0-195030000.0-191100000.0-178840000.0-175730000.0-172530000.0-175470000.0
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-202.6-189.0-203.8-205.6-224.0-258.8-205.5-174.0-147.8-129.1-147.6-125.4-106.4-113.0-83.5-172.9-135.0-120.3-94.0-75.9-60.8-81.2-65.2-53.6-74.9-60.7-123.1-100.7-92.9-85.1-139.7-411.0-326.5

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2021-03-312020-09-302020-06-302019-03-312018-06-30
Value987396118103
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-03-312020-09-302020-06-302019-03-312018-06-30
Value987396118103
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.099.999.9
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.0

us-gaap:CommonStock


Stock
Period End2021-03-312020-09-302020-06-302019-03-312018-06-30
Value0.0360.0250.040.0630.052
Percentage of StockIssuedDuringPeriodValueNewIssues0.00.00.00.10.1
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.0

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value6.1135.2435.7965.1364.4515.3524.9333.754.5224.2093.386
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value6.1135.2435.7965.1364.4515.3524.9333.754.5224.2093.386
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312013-12-312012-12-31
Value-45.69-29.036-5.533-25.677-36.546-44.142-38.044-17.388-48.838-30.0-27.228-1.18368317
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-148.6-172.0-10.5-140.7-180.4-322.6-151.0-92.8-461.0-310.5-172.4-7.9180.6

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312013-12-312012-12-31
Value13-34.257-16.075-43.28141107.626-6.372-10.12-70.49245-0.924076-0.409907
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues44.9-202.9-30.5-237.1202.477.230.3-34.0-95.5-729.6285.4-6.2-4.2

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312013-12-312012-12-31
Value2.3461001.10274990.1620.2970.0370.6331190.475850.002517
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues7.6596.32.1405.8488.81.21.20.26.01231.73.0570.40.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-29.52637-20.5065.105103-33.416-30.121-23.723-58.3251818
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-96.0221.3-38.928.0510.8-244.2-119.6-126.6-550.6191.6116.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312013-12-312013-09-302012-12-312012-09-30
Value2.7812.7293.2962.8092.7262.6362.582.9033.0112.7281.2021.3381.3421.9052.0031.9781.9742.0771.7861.7710.3653850.3168520.2775040.235543
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value38-15.9344.304-0.4287.399-0.9383.2413.891-0.503-23.4688.6133.13410-6.361110.203-0.102-0.671-0.244-75.367751.287-1.52-1.592.615-1.216-2.382.670.899279-0.258279-0.277263-1.8719371.8310950.275905-4.065079
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-31
Value304000.06172000.0
Percentage of IncreaseDecreaseInInventories100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312013-12-312012-12-31
Value-45.69-29.036-5.533-25.677-36.546-44.142-38.044-17.388-48.838-30.0-27.228-1.18368317
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-148.6-172.0-10.5-140.7-180.4-322.6-151.0-92.8-461.0-310.5-172.4-7.9180.6

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-39.935-51.272-2.087-36.043-46.885-44.724-30.396-44.631-31.767-45.017-44.644-34.029-43.244-49.536105-47.043-40.654-37.655-34.783-33.84640-30.363-28.451-15.442-21.37645-19.018-3.928-12.259-3.108335-3.2056.603982-0.294-3.366-2.1052.6005143.5464.32
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-129.8-303.7-4.0-197.5-231.5-326.9-120.7-238.1-299.9-465.9-282.7-163.6-229.6-1055.169.4-2828.8-2440.2-1832.4-681.2-1039.850.2-1066.9-347.9-105.2-318.363.3-347.3-21.4-133.0-21.1-21.532.6-2.4-31.8-21.516.220.321.1

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value-51.272-36.043-46.885-44.724-44.631-31.767-45.017-43.244-49.536
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-303.7-197.5-231.5-326.9-238.1-299.9-465.9-229.6-1055.1
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-39935000.0-46885000.0-44631000.0-31767000.0-45017000.0-34029000.0-43244000.0-49536000.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-129.8-231.5-238.1-299.9-465.9-163.6-229.6-1055.1

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Profit
Period End2021-06-302020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-39935000.0-46885000.0-44631000.0-31767000.0-45017000.0-34029000.0-43244000.0-49536000.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-129.8-231.5-238.1-299.9-465.9-163.6-229.6-1055.1
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value6.075.2865.2575.8325.0964.4915.495.3984.8843.7994.3524.5734.1633.4323.684.0013.6023.4613.0393.0033.1233.0012.2162.0981.9021.6310.9950.8560.7810.6116040.4686010.1370.1120.1448720.209599
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312013-12-312012-12-31
Value13-34.257-16.075-43.28141107.626-6.372-10.12-70.49245-0.924076-0.409907
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues44.9-202.9-30.5-237.1202.477.230.3-34.0-95.5-729.6285.4-6.2-4.2

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value2.0670.6263.560.4990.5941.2531.2470.780.5871.6750.7154.2165.50414109.857.3031.4921.0621.985.5082.8312.782.6082.8120.9971.6580.6720.7947250.4472750.9240761.16070.4509060.4250940.409907
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312013-12-312012-12-31
Value2.3461001.10274990.1620.2970.0370.6331190.475850.002517
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues7.6596.32.1405.8488.81.21.20.26.01231.73.0570.40.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-03-16
Value21.4821.2121.4821.4221.0720.9522.3320.9822.5222.4822.2321.9521.9421.9719.7919.7119.6319.6418.9318.6718.0617.4416.913.2612.7211.8811.46.626.415.244.91.50.940.94
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:PlanName

mgnx:A2003StockIncentivePlan


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value2.982.922.732.792.962.32.282.191.931.921.911.891.851.89
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice13.913.812.713.214.111.010.19.78.88.88.79.69.49.6

mgnx:EquityIncentivePlan2003


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2.792.322.031.851.811.721.64
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice13.010.49.19.39.610.214.4

mgnx:StockIncentivePlan2013


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value21.9221.7222.1422.121.8121.8824.1222.5524.4224.5825.5625.6125.6625.7624.6224.6924.8824.926.6627.1324.22
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice102.0102.4103.1103.2103.5104.4108.0107.5108.4109.3115.0116.7117.0117.3124.4125.3126.7126.8140.8160.5212.5

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value9293000.09017000.03674000.0805000.01406000.0727000.01605000.0395000.0
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6126000.04950000.04318000.03395000.02465000.02425000.02047000.01707900.01592400.01534000.01246000.0
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value263214172112128104947978
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0

mgnx:CommonStockMaximumAmountAvailableForIssuance us-gaap:SubsidiarySaleOfStock

mgnx:CommonStockMaximumAmountAvailableForIssuance

mgnx:AtTheMarketOffering


Common
Period End2020-11-302020-06-302019-12-31
Value10017550
Percentage of CommonStockMaximumAmountAvailableForIssuance100.0100.0100.0

mgnx:CommonStockMaximumAmountAvailableForIssuanceIncrease us-gaap:SubsidiarySaleOfStock

mgnx:CommonStockMaximumAmountAvailableForIssuanceIncrease

mgnx:AtTheMarketOffering


Common
Period End2021-04-30
Value300
Percentage of CommonStockMaximumAmountAvailableForIssuanceIncrease100.0

mgnx:DevelopmentAndRegulatoryMilestonePaymentsUnderAgreementRecognized us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:DevelopmentAndRegulatoryMilestonePaymentsUnderAgreementRecognized

mgnx:BoehringerIngelheimInternationalGmbH, mgnx:BoehringerIngelheimInternationalGmbHCollaborationAndLicenseAgreement


Development
Period End2020-12-312020-09-302020-06-30
Value0.01212
Percentage of DevelopmentAndRegulatoryMilestonePaymentsUnderAgreementRecognized0.0100.0100.0

mgnx:IncyteCorporation, mgnx:IncyteMGA012Agreement


Development
Period End2021-06-302021-03-312020-12-312019-09-302018-12-312018-09-30
Value5.010.010.00.05.010.0
Percentage of DevelopmentAndRegulatoryMilestonePaymentsUnderAgreementRecognized0.00.00.00.00.00.0

mgnx:IncreaseDecreaseInLeaseLiabilities

mgnx:IncreaseDecreaseInLeaseLiabilities


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-990000.0-683000.0789000.0-579000.0-665000.0-869000.0-966000.03616000.0-855000.01086000.00000
Percentage of IncreaseDecreaseInLeaseLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

mgnx:NonRefundableUpfrontFees us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:NonRefundableUpfrontFees

mgnx:JanssenBiotechInc, mgnx:JanssenCollaborationAndLicenseAgreement


Non
Period End2020-12-31
Value20
Percentage of NonRefundableUpfrontFees100.0

mgnx:PercentageOfSharesOfCompanysCommonStockOutstandingForIncreaseInSharesReservedForIssuanceUnderStockPlan us-gaap:PlanName

mgnx:PercentageOfSharesOfCompanysCommonStockOutstandingForIncreaseInSharesReservedForIssuanceUnderStockPlan

mgnx:StockIncentivePlan2013


Percentage
Period End2021-06-302021-03-312020-12-31
Value04.00
Percentage of PercentageOfSharesOfCompanysCommonStockOutstandingForIncreaseInSharesReservedForIssuanceUnderStockPlan0.0100.00.0

mgnx:ProceedsfromRoyaltiesPercent us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:ProceedsfromRoyaltiesPercent

mgnx:JanssenBiotechInc, mgnx:JanssenCollaborationAndLicenseAgreement


Proceedsfrom
Period End2020-12-31
Value10.0
Percentage of ProceedsfromRoyaltiesPercent100.0

mgnx:ProceedsfromStockOptionsExercisedAndESPPPurchases

mgnx:ProceedsfromStockOptionsExercisedAndESPPPurchases


Proceedsfrom
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value2452000.02458000.01141000.02092000.02503000.0162000.0297000.037000.0633000.0348000.0735000.0132000.0496000.0629000.0449000.028000.0559000.0108000.0531000.01011000.0
Percentage of ProceedsfromStockOptionsExercisedAndESPPPurchases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mgnx:RevenueMultipleDeliverableArrangementsDeterminationOfSellingPriceAmount us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:RevenueMultipleDeliverableArrangementsDeterminationOfSellingPriceAmount

mgnx:JanssenBiotechInc, mgnx:JanssenCollaborationAndLicenseAgreement


Revenue
Period End2020-12-31
Value2200000.0
Percentage of RevenueMultipleDeliverableArrangementsDeterminationOfSellingPriceAmount100.0

mgnx:RevenuesNetOfTaxWithholding us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:RevenuesNetOfTaxWithholding

mgnx:ZaiLab, mgnx:ZaiLabCollaborationAndLicenseAgreement


Revenues
Period End2020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.00.03.64.04.0
Percentage of RevenuesNetOfTaxWithholding0.00.0100.0100.0100.0

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments


Accretion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-441000.0-367000.0-127000.0-14000.0131000.0270000.0342000.0421000.0
Percentage of AccretionAmortizationOfDiscountsAndPremiumsInvestments100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-06-302021-03-31
Value-368000.0486000.0
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2020-12-312020-09-302019-12-312019-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value2.9332.9623.0623.0571.1662.0771.7861.7711.1920.4890.6360.5460.5050.4820.4367830.3982170.3587250.3166150.2658150.2521850.237434
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-161000.01829000.01613000.0810000.0-2286000.01685000.0-67000.0-2531000.0-781000.0-8499000.07815000.0-112000.0197000.0-2223000.0
Percentage of IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value4.510.8551.4952.1625.455-2.118-1.379-2.0151.634-4.297-5.9541.2456.7381.4773.3313.3164.3621.8230.7643.0292.654-1.7882.3550.8151.304-0.9293.8990.7210.574399-0.8483992.643741-0.001214-0.3203150.0243150.13134
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value19-0.601-3.656-1.049-1.519-2.248-13.7553.747-5.431-5.4319-2.436-1.936-1.435
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities


Increase
Period End2021-03-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value258000.0802000.0928000.0515000.000
Percentage of IncreaseDecreaseInOtherCurrentLiabilities100.0100.0100.0100.00.00.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-0.731-3.6731.034-0.62-0.3-0.695-1.043-18.47192.079-4.7133.7825.551-0.04-0.094-0.103-0.1460.081-0.8750.1730.1280.2980.2850.00.00.01.331-0.381-1.1653471.394347
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value-265000.01239000.0-4438000.01345000.0
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidExpense

us-gaap:IncreaseDecreaseInPrepaidExpense


Increase
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value6351000.02439000.0-4438000.01345000.0-734000.02403000.01307000.01902000.02091000.01142000.0-155000.0177000.0-110000.0-747000.0-1010000.01535000.02172000.0-2471000.02079000.0-103000.0-178000.0-1082000.0-551000.0-594000.01758000.0353000.0163200.0964800.0-131740.01032800.013302.0-80302.021929.0
Percentage of IncreaseDecreaseInPrepaidExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-10000.018000.0-9000.0-15000.0-55000.056000.0-7000.0-11000.034000.03000.0-3000.0-18000.040000.039000.0-76000.056000.025000.0-26000.0-100000.0-41000.07000.057000.0-5000.0000
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value239372791161507160811233622445320.056786711983-142.910.00.00.0
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value0.098-0.03873960.00.00.00.01180.00.01030.0-0.051.1190.00.00.00.00.01400.062-0.017-0.3060.23754876850.1421830.6524650.0565350.002517
Percentage of ProceedsFromIssuanceOfCommonStock0.0100.0100.0100.0100.00.00.00.00.0100.00.00.0100.00.0100.0100.00.00.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value396060365273596651125837595865468050816668730.00.00.00.0
Percentage of ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value2100000.02500000.0800000.02100000.02200000.0200000.00100000.0300000.0300000.00700000.0600000.0108000.0538000.01011000.0127000.0224000.0279000.0207000.0170000.0255000.0258000.0180000.0238000.068000.0249000.0
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SaleOfStockConsiderationReceivedOnTransaction us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock

us-gaap:SaleOfStockConsiderationReceivedOnTransaction

us-gaap:SubsequentEvent, mgnx:AtTheMarketOffering


Sale
Period End2020-07-30
Value21
Percentage of SaleOfStockConsiderationReceivedOnTransaction100.0

us-gaap:SaleOfStockConsiderationReceivedOnTransaction us-gaap:SubsidiarySaleOfStock

mgnx:AtTheMarketOffering


Sale
Period End2021-03-312020-12-312020-06-302017-12-312017-09-302017-05-032017-06-30
Value980.0960.01.1109.7
Percentage of SaleOfStockConsiderationReceivedOnTransaction0.00.00.00.00.00.00.0

us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock

us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction

us-gaap:SubsequentEvent, mgnx:AtTheMarketOffering


Sale
Period End2020-07-30
Value726380.0
Percentage of SaleOfStockNumberOfSharesIssuedInTransaction100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-31
Value015.320
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue0.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-31
Value0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-31
Value0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue0.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate us-gaap:Range

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

srt:Maximum


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value086.70107.910.3930.695-0.0060.0130.0090.744-0.00200.0120.71-0.0030.006
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

srt:Minimum


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-0.286.4-0.366.62700.6730.003000.7370.0020-0.0020.680.0030
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.099.70.061.70.096.8-50.00.00.099.1-100.00.0-16.795.8-100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate us-gaap:Range

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

srt:Maximum


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value01.401.78200.0180000.026000.0030.02800
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.0100.00.0100.00.0100.00.00.00.0100.00.00.0100.0100.00.00.0

srt:Minimum


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value00.600.395-0.0010.0060-0.005-0.0040.0230000.0240-0.001
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.042.90.022.20.033.30.00.00.088.50.00.00.085.70.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-31
Value0.41.40.41.31.51.10.10.21.01.61.23.73.6
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-31
Value0.8814.230.182.21.187.12-0.35-0.05-0.2714.65-0.1718.2918.75
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-31
Value0.7617.590.63
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-31
Value-1.6217.98-0.06
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-31
Value1.219.520.14
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-31
Value4.0000000000000014.14.35.03.73.74.96.33.43.14.56.33.3
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensation

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensation


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2346000.02458000.082000.02503000.0162000.037000.0634000.0347000.0131000.0496000.0629000.0
Percentage of StockGrantedDuringPeriodValueSharebasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2345000.02456000.02091000.02501000.0160000.037000.0633000.0346000.0131000.0496000.0628000.0
Percentage of StockGrantedDuringPeriodValueSharebasedCompensation100.099.92550.099.998.8100.099.899.7100.0100.099.8

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-06-302019-03-312018-03-31
Value1000.02000.03000.02000.02000.01000.01000.01000.0
Percentage of StockGrantedDuringPeriodValueSharebasedCompensation0.00.13.70.11.20.20.30.2

us-gaap:TreasuryStock


Stock
Period End2020-09-30
Value-2012000.0
Percentage of StockGrantedDuringPeriodValueSharebasedCompensation-2453.7

us-gaap:TreasuryStockRetiredCostMethodAmount us-gaap:StatementEquityComponents

us-gaap:TreasuryStockRetiredCostMethodAmount

us-gaap:AdditionalPaidInCapital


Treasury
Period End2020-09-30
Value2012000.0
Percentage of TreasuryStockRetiredCostMethodAmount100.0

us-gaap:TreasuryStock


Treasury
Period End2020-09-30
Value-2012000.0
Percentage of TreasuryStockRetiredCostMethodAmount-100.0

us-gaap:UnrealizedGainLossOnInvestments

us-gaap:UnrealizedGainLossOnInvestments


Unrealized
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-10000.018000.0-15000.0-55000.056000.0-11000.034000.03000.0-17000.040000.038000.0
Percentage of UnrealizedGainLossOnInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrealizedGainLossOnInvestments us-gaap:StatementEquityComponents

us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest


Unrealized
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-10000.018000.0-15000.0-55000.056000.0-11000.034000.03000.0-17000.040000.038000.0
Percentage of UnrealizedGainLossOnInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mgnx:CollaborativeAgreementTransactionPrice us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:CollaborativeAgreementTransactionPrice

mgnx:JanssenBiotechInc, mgnx:JanssenCollaborationAndLicenseAgreement


Collaborative
Period End2020-12-31
Value22
Percentage of CollaborativeAgreementTransactionPrice100.0

mgnx:ZaiLab, mgnx:A2021ZaiLabAgreements


Collaborative
Period End2021-06-15
Value40
Percentage of CollaborativeAgreementTransactionPrice0.0

mgnx:DeferredTaxAssetsOperatingLeaseLiabilities

mgnx:DeferredTaxAssetsOperatingLeaseLiabilities


Deferred
Period End2020-12-312019-12-312018-12-31
Value8048000.08413000.00
Percentage of DeferredTaxAssetsOperatingLeaseLiabilities100.0100.00.0

mgnx:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets

mgnx:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets


Deferred
Period End2020-12-312019-12-312018-12-31
Value5316000.05547000.00
Percentage of DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets100.0100.00.0

mgnx:OperatingLossCarryforwardsNotSubjectToLimitation

mgnx:OperatingLossCarryforwardsNotSubjectToLimitation


Operating
Period End2020-12-31
Value634
Percentage of OperatingLossCarryforwardsNotSubjectToLimitation100.0

mgnx:OptInFee us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:OptInFee

mgnx:ZaiLab, mgnx:A2021ZaiLabAgreements


Opt
Period End2021-06-15
Value85
Percentage of OptInFee100.0

mgnx:PotentialCommercialMilestonePaymentsUnderAgreement us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:PotentialCommercialMilestonePaymentsUnderAgreement

mgnx:ZaiLab, mgnx:A2021ZaiLabAgreements


Potential
Period End2021-06-15
Value600
Percentage of PotentialCommercialMilestonePaymentsUnderAgreement100.0

mgnx:PotentialDevelopmentandRegulatoryMilestonePaymentsUnderAgreement us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:PotentialDevelopmentandRegulatoryMilestonePaymentsUnderAgreement

mgnx:ZaiLab, mgnx:A2021ZaiLabAgreements


Potential
Period End2021-06-15
Value800
Percentage of PotentialDevelopmentandRegulatoryMilestonePaymentsUnderAgreement100.0

mgnx:PotentialMilestonePaymentsAndRoyaltiesOnProductSales us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:PotentialMilestonePaymentsAndRoyaltiesOnProductSales

mgnx:JanssenBiotechInc, mgnx:JanssenCollaborationAndLicenseAgreement


Potential
Period End2020-12-31
Value312
Percentage of PotentialMilestonePaymentsAndRoyaltiesOnProductSales100.0

mgnx:PotentialMilestonePaymentsandRoyaltiesonFutureSalesunderAgreement us-gaap:CounterpartyName

mgnx:PotentialMilestonePaymentsandRoyaltiesonFutureSalesunderAgreement

mgnx:F.HoffmannLaRocheLtd.andHoffmannLaRocheInc.


Potential
Period End2020-12-31
Value370
Percentage of PotentialMilestonePaymentsandRoyaltiesonFutureSalesunderAgreement100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value1000.011000.0-7000.02000.017000.072000.016000.023000.034000.00-3000.0017000.0-23000.0-61000.0-27000.0-80000.0-108000.0-82000.018000.059000.052000.0-5000.00
Percentage of AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


Assets
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value1431621601552512503652352631571791941991163348
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Assets
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value4946466146623652352631571791941991163348
Percentage of AssetsFairValueDisclosure34.228.428.839.518.624.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2


Assets
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value94116112942041880.00.00.00.0
Percentage of AssetsFairValueDisclosure65.871.670.160.581.475.10.00.00.00.0

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

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1615494555744678555346999196617292314646476462
Percentage of AssetsFairValueDisclosure0.00.034.20.00.00.028.40.00.00.028.80.00.00.039.50.00.00.018.60.00.00.024.9

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value126128949788881169710510611258655994112127207204204203181188
Percentage of AssetsFairValueDisclosure0.00.065.80.00.00.071.60.00.00.070.10.00.00.060.50.00.00.081.40.00.00.075.1

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value143143143143143163162176183162160164163156155185219239251251251246250
Percentage of AssetsFairValueDisclosure0.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value5000.014000.03000.03000.017000.099000.026000.025000.034000.06000.02000.019000.04000.02000.012000.05000.023000.056000.0103000.094000.061000.044000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Available
Period End2021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2000.02000.014000.064000.020000.020000.026000.05000.002000.019000.02000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax14.366.782.464.676.980.076.583.30.0100.0100.0100.0

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302017-12-31
Value1000.03000.035000.06000.05000.08000.01000.0000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax33.317.635.423.120.023.516.70.00.00.0

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-03-312018-09-302018-06-302017-12-31
Value5000.012000.01000.02000.000000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.085.733.366.70.00.00.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value4000.03000.010000.0027000.010000.02000.006000.02000.02000.027000.063000.039000.085000.0131000.0138000.085000.035000.09000.049000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4000.03000.03000.0027000.010000.02000.006000.03000.02000.02000.050000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.030.00.0100.0100.0100.00.0100.00.0100.0100.079.4

us-gaap:USTreasurySecurities


Available
Period End2020-12-312020-06-302019-03-312018-09-302018-06-302017-12-31
Value7000.000006000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax70.00.00.00.00.09.5

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value108124917936778986918158625993112127207200204203152142
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2440305.0120647674706412485677
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis22.732.333.76.357.282.485.286.477.278.70.083.891.382.9

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Available
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302017-12-31
Value4.5374.57148.51113131120175.4773.44111
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.23.717.723.517.614.813.622.821.39.45.512.8

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-03-312018-09-302018-06-302017-12-31
Value797960606.9990.03.9961.9943.995
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis73.164.066.375.919.30.06.83.24.3

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value108124917936778986918158625993112127207200204203152142
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByAssetClass

us-gaap:CorporateDebtSecurities


Available
Period End2020-12-312019-12-312018-12-31
Value33103100
Percentage of AvailableForSaleSecuritiesDebtSecurities37.0115.50.0

us-gaap:USTreasurySecurities


Available
Period End2020-12-312018-12-31
Value6012
Percentage of AvailableForSaleSecuritiesDebtSecurities66.30.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CorporateDebtSecurities, us-gaap:FairValueInputsLevel2


Available
Period End2020-12-312019-12-312018-12-31
Value33103100
Percentage of AvailableForSaleSecuritiesDebtSecurities37.0115.50.0

us-gaap:USTreasurySecurities, us-gaap:FairValueInputsLevel2


Available
Period End2020-12-312018-12-31
Value6012
Percentage of AvailableForSaleSecuritiesDebtSecurities66.30.0

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

us-gaap:CorporateDebtSecurities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value424333233375103858489100
Percentage of AvailableForSaleSecuritiesDebtSecurities39.535.137.030.193.196.5115.599.291.9109.40.0

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Available
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.5374.5714301313112017
Percentage of AvailableForSaleSecuritiesDebtSecurities4.23.717.784.117.714.813.622.821.3

us-gaap:USTreasurySecurities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302018-12-31
Value797960602312
Percentage of AvailableForSaleSecuritiesDebtSecurities73.164.066.375.966.20.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency

us-gaap:CorporateDebtSecurities, us-gaap:FairValueMeasurementsRecurring


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value424333233375103858489100
Percentage of AvailableForSaleSecuritiesDebtSecurities39.535.137.030.193.196.5115.599.291.9109.40.0

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities, us-gaap:FairValueMeasurementsRecurring


Available
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.5374.5714301313112017
Percentage of AvailableForSaleSecuritiesDebtSecurities4.23.717.784.117.714.813.622.821.3

us-gaap:USTreasurySecurities, us-gaap:FairValueMeasurementsRecurring


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302018-12-31
Value797960602312
Percentage of AvailableForSaleSecuritiesDebtSecurities73.164.066.375.966.20.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2440305.0120647674706412485677
Percentage of AvailableForSaleSecuritiesDebtSecurities22.732.333.76.357.282.385.286.477.278.70.083.891.382.9

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Available
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302017-12-31
Value4.5374.57148.51413131120175.4773.44111
Percentage of AvailableForSaleSecuritiesDebtSecurities4.23.717.723.517.714.813.622.821.39.45.512.8

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-03-312018-09-302018-06-302017-12-31
Value797960606.9990.03.9961.9943.989
Percentage of AvailableForSaleSecuritiesDebtSecurities73.164.066.375.919.30.06.83.24.3

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashAndCashEquivalentsFairValueDisclosure


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value52731466250108114208237131153167172907.52202918
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByAssetClass

us-gaap:MoneyMarketFunds


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value49464661466226
Percentage of CashAndCashEquivalentsFairValueDisclosure94.263.031.698.492.157.719.8

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:MoneyMarketFunds, us-gaap:FairValueInputsLevel1


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value49464661466226
Percentage of CashAndCashEquivalentsFairValueDisclosure94.263.031.698.492.157.719.8

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

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


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1615494555744667555346999196617292314646476462
Percentage of CashAndCashEquivalentsFairValueDisclosure0.00.094.20.00.00.063.00.00.00.031.60.00.00.098.40.00.00.092.10.00.00.057.7

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency

us-gaap:MoneyMarketFunds, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1615494555744667555346999196617292314646476462
Percentage of CashAndCashEquivalentsFairValueDisclosure0.00.094.20.00.00.063.00.00.00.031.60.00.00.098.40.00.00.092.10.00.00.057.7

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value3418526410785737869781469995966272923150474794108
Percentage of CashAndCashEquivalentsFairValueDisclosure0.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0

us-gaap:ContractWithCustomerLiability us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

us-gaap:ContractWithCustomerLiability

mgnx:IMabBiopharma, mgnx:IMabBiopharmaCollaborationAndLicenseAgreement


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value9.0101110.011121314
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0

mgnx:ZaiLab, mgnx:A2021ZaiLabAgreements


Contract
Period End2021-06-30
Value21
Percentage of ContractWithCustomerLiability233.3

mgnx:ZaiLabs, mgnx:ZaiLabsCollaborationAndLicenseAgreement


Contract
Period End2020-12-312019-12-312018-12-31
Value5.05.021
Percentage of ContractWithCustomerLiability43.937.00.0

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value137.266.9265.7786.8198.19.15310151719
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

mgnx:IMabBiopharma, mgnx:IMabBiopharmaCollaborationAndLicenseAgreement


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value5.67.36.95.76.88.19.110.0
Percentage of ContractWithCustomerLiabilityNoncurrent41.6100.699.698.799.7100.099.499.6

mgnx:ZaiLab, mgnx:A2021ZaiLabAgreements


Contract
Period End2021-06-30
Value7.8
Percentage of ContractWithCustomerLiabilityNoncurrent57.9

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value9293000.09017000.03674000.0805000.01406000.0727000.01605000.0395000.0
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueCurrent

us-gaap:DeferredRevenueCurrent


Deferred
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value4.45610217.3777.9998.1217.2023.2023.2024.2614.2613.7834.5784.9195.8667.163101214152019202124
Percentage of DeferredRevenueCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueNoncurrent

us-gaap:DeferredRevenueNoncurrent


Deferred
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value6.9269.15319141517138.4389.2388.979109.794101112111214161923177.1356878.81234219
Percentage of DeferredRevenueNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDeferredIncome


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value3132000.0367000.03736000.02982000.05098000.06632000.03989000.08216700.09379100.0
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value272223176113130105957978
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value13611687507557553635
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsDomestic100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value3731227.5516.5833.9073.7233.3155143.521722
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration

mgnx:DomesticTaxAuthorityandStateandLocalJurisdictionMember


Deferred
Period End2020-12-312019-12-312018-12-31
Value648554415
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration us-gaap:IncomeTaxAuthority, us-gaap:TaxPeriod

mgnx:DomesticTaxAuthorityandStateandLocalJurisdictionMember, mgnx:Indefinite


Deferred
Period End2020-12-312019-12-312018-12-31
Value410316177
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration63.357.142.8

mgnx:DomesticTaxAuthorityandStateandLocalJurisdictionMember, mgnx:TaxYear2025To2037


Deferred
Period End2020-12-312019-12-312018-12-31
Value237237237
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration36.742.957.2

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value149.1236.8545.8475.0852.5320.9621.438871.575782
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value232222211919191919
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value5035292112107.1773.7856122.777899
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsResearch100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value1854000.03032000.01763000.0805000.01406000.0727000.01605000.0395000.0
Percentage of DeferredTaxLiabilitiesPrepaidExpenses100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value2123000.0438000.01911000.00
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.00.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2021-06-302021-03-312020-12-312020-09-30
Value40422731
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2021-06-302021-03-312020-12-312020-09-30
Value800000.01200000.02000000.02800000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions100.0100.0100.0100.0

us-gaap:InventoryRawMaterials

us-gaap:InventoryRawMaterials


Inventory
Period End2021-06-302021-03-31
Value607000.01215000.0
Percentage of InventoryRawMaterials100.0100.0

us-gaap:InventoryWorkInProcess

us-gaap:InventoryWorkInProcess


Inventory
Period End2021-06-302021-03-31
Value5869000.04957000.0
Percentage of InventoryWorkInProcess100.0100.0

us-gaap:InventoryWorkInProcessAndRawMaterials

us-gaap:InventoryWorkInProcessAndRawMaterials


Inventory
Period End2021-06-302021-03-31
Value6476000.06172000.0
Percentage of InventoryWorkInProcessAndRawMaterials100.0100.0

us-gaap:Investments

us-gaap:Investments


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value108124917936778997918112586259931121272021922012031521420.0
Percentage of Investments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:LesseeOperatingLeaseDiscountRate

us-gaap:LesseeOperatingLeaseDiscountRate


Lessee
Period End2020-12-312019-12-31
Value9.79.9
Percentage of LesseeOperatingLeaseDiscountRate100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value6726000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:PrepaidExpenseCurrent

us-gaap:PrepaidExpenseCurrent


Prepaid
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value16108.1921211129.6168.3096.4064.3153.1733.3283.1513.2614.0085.0183.4831.3113.7821.7031.8061.9843.0663.6174.2112.4532.11.9365050.9717051.1034490.137634
Percentage of PrepaidExpenseCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SaleOfStockPricePerShare us-gaap:CounterpartyName, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType

us-gaap:SaleOfStockPricePerShare

mgnx:ZaiLab, mgnx:A2021ZaiLabAgreements


Sale
Period End2021-06-15
Value31.3
Percentage of SaleOfStockPricePerShare100.0

us-gaap:SaleOfStockPricePerShare us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock

us-gaap:SubsequentEvent, mgnx:AtTheMarketOffering


Sale
Period End2020-07-30
Value30.02
Percentage of SaleOfStockPricePerShare0.0

us-gaap:SaleOfStockPricePerShare us-gaap:SubsidiarySaleOfStock

mgnx:AtTheMarketOffering


Sale
Period End2021-03-312020-12-312020-09-302020-06-30
Value27.626.4626.4624.44
Percentage of SaleOfStockPricePerShare0.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value16.3915.9315.9215.915.6115.3215.320
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value22.9622.9622.9223.03
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value53912739
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value50862636
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value21.5821.3221.5721.5
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-30
Value25431318
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0100.0100.0100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:IncomeTaxAuthority

us-gaap:TaxCreditCarryforwardAmount

us-gaap:DomesticCountry


Tax
Period End2020-12-31
Value69
Percentage of TaxCreditCarryforwardAmount100.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value6100000.04900000.04500000.03400000.02500000.02000000.01700000.001100000.0
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0100.0100.0100.0100.0100.0100.00.0100.0

Line plots across dimensions of each concept


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:Revenues
us-gaap:CounterpartyName, us-gaap:ProductOrService, us-gaap:ResearchAndDevelopmentArrangementContractToPerformForOthersByType
('mgnx:IncyteCorporation', 'mgnx:RevenuesFromLicenseAgreements', None)
Revenuesus-gaap: Counterparty Name, us-gaap: Product Or Service, us-gaap: Research And Development Arrangement Contract To Perform For Others By Type
us-gaap:Revenues
us-gaap:ProductOrService
(None,)
Revenuesus-gaap: Product Or Service
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:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Equity Components
us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents
(None,)
Stock Issued During Period Value New Issuesus-gaap: Statement Equity Components