MGY


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

Table of contents


us-gaap:StatementClassOfStock
us-gaap:CommonStockValue
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:SharesOutstanding
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:SharesIssued
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock
us-gaap:CommonStockSharesIssued
us-gaap:StatementClassOfStock
us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding
us-gaap:StatementClassOfStock

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:StatementClassOfStock
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:StatementClassOfStock
us-gaap:EarningsPerShareBasic
us-gaap:StatementClassOfStock
us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:InterestExpense
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
us-gaap:StatementClassOfStock

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted
us-gaap:StatementClassOfStock

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingCostsAndExpenses

us-gaap:OperatingIncomeLoss

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:Revenues
us-gaap:ProductOrService

us-gaap:Assets

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:OtherAssetsCurrent

us-gaap:AmortizationOfIntangibleAssets

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock
us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:MinorityInterest

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:AmortizationOfFinancingCosts

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock
dei:LegalEntity
dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:StatementClassOfStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:DeferredTaxAssetsValuationAllowance

mgy:AdjustmentsToAdditionalPaidInCapitalNoncompeteSettlement
us-gaap:StatementEquityComponents
us-gaap:BusinessAcquisition
mgy:BusinessCombinationNonCompeteAgreementCashPaidUponComplianceOfNonCompeteAgreementMilestonesMilestone2
us-gaap:BusinessAcquisition, us-gaap:StatementClassOfStock
mgy:BusinessCombinationNonCompeteAgreementCashValueOfEquityInterestsAuthorizedForIssuanceUponComplianceOfNonCompeteAgreementMilestonesMilestone1
us-gaap:BusinessAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:Vesting
mgy:BusinessCombinationNonCompeteAgreementEquityInterestsAuthorizedForCashValueSettlementUponAchievementOfStockPriceThresholds
us-gaap:BusinessAcquisition, us-gaap:StatementClassOfStock
mgy:BusinessCombinationNonCompeteAgreementEquityInterestsAuthorizedForIssuanceUponComplianceOfNonCompeteAgreementMilestonesMilestone1
us-gaap:BusinessAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:Vesting
mgy:BusinessCombinationNonCompeteAgreementEquityInterestsIssuedForSettlement
us-gaap:BusinessAcquisition, us-gaap:StatementClassOfStock
mgy:BusinessCombinationNonCompeteAgreementEquityInterestsIssuedUponComplianceOfNonCompeteAgreementMilestonesMilestone1
us-gaap:BusinessAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:Vesting
mgy:BusinessCombinationNoncompeteAgreementEquityInterestsAuthorizedforIssuanceUponAchievementofStockPriceThresholds
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
mgy:DebtInstrumentModificationTransactionFees

mgy:GasGatheringTransportationMarketingandProcessingCosts1

mgy:ImpairmentOfProvedOilAndGasProperties

mgy:IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid

mgy:IncreaseDecreaseinDrillingAdvances

mgy:NoncashExplorationExpense

mgy:PaymentsForComplianceOfNonCompeteAgreement
us-gaap:BusinessAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType, us-gaap:Vesting
mgy:PaymentsForSettlementOfNonCompeteAgreement

mgy:PaymentsToAcquireOilAndGasPropertyAndEquipmentChangesInWorkingCapital
us-gaap:AwardType
mgy:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsinPeriodFairValue
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
mgy:StockIssuedDuringPeriodSharesNonCompeteSettlement

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:AssetRetirementObligationAccretionExpense

us-gaap:CapitalExpendituresIncurredButNotYetPaid
us-gaap:SubsequentEventType
us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CurrentFederalTaxExpenseBenefit

us-gaap:CurrentIncomeTaxExpenseBenefit

us-gaap:CurrentStateAndLocalTaxExpenseBenefit

us-gaap:DeferredFederalIncomeTaxExpenseBenefit

us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit

us-gaap:DerivativeGainLossOnDerivativeNet
us-gaap:Energy, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure
us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType
us-gaap:DistributionMadeToLimitedLiabilityCompanyLLCMemberDistributionsDeclaredPerUnit
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal

us-gaap:ExplorationExpense

us-gaap:GainLossOnSaleOfDerivatives

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccruedLiabilities
us-gaap:StatementEquityComponents
us-gaap:MinorityInterestPeriodIncreaseDecrease

us-gaap:OperatingLeaseExpense

us-gaap:OtherNoncashIncomeExpense

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsToAcquireBusinessTwoNetOfCashAcquired

us-gaap:PaymentsToAcquireOilAndGasPropertyAndEquipment

us-gaap:PaymentsToMinorityShareholders

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:ProceedsFromSaleOfEquityMethodInvestments

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock
us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation
dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock
us-gaap:StockRedeemedOrCalledDuringPeriodShares
dei:LegalEntity, us-gaap:StatementClassOfStock
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StockRedeemedOrCalledDuringPeriodValue
dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock
us-gaap:StockRepurchasedAndRetiredDuringPeriodShares
dei:LegalEntity, us-gaap:StatementClassOfStock
us-gaap:StatementClassOfStock
us-gaap:StockRepurchasedAndRetiredDuringPeriodValue
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:TaxAdjustmentsSettlementsAndUnusualProvisions

us-gaap:TaxesExcludingIncomeAndExciseTaxes
us-gaap:StatementClassOfStock
us-gaap:TreasuryStockSharesAcquired
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock
us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted

us-gaap:UnrealizedGainLossOnDerivatives
us-gaap:ConsolidatedEntities, us-gaap:Ownership
us-gaap:VariableInterestEntityOwnershipPercentage

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment
us-gaap:StatementClassOfStock
us-gaap:StatementClassOfStock
dei:EntityCommonStockSharesOutstanding

mgy:AccruedCapitalExpendituresCurrent

mgy:AccruedGatheringTransportationAndProcessingCurrent

mgy:AccruedGeneralAndAdministrativeExpensesCurrent

mgy:AccruedGeneralandAdministrativeExpensesCurrent

mgy:AccruedInterestCurrent

mgy:AssetsNoncurrentExcludingOilAndGasPropertySuccessfulEffortMethodNet
us-gaap:BusinessAcquisition
mgy:BusinessCombinationNonCompeteAgreementCashPaidUponComplianceOfNonCompeteAgreementMilestonesMilestone1

mgy:DeferredTaxAssetsCapitalizedTransactionCosts

mgy:DeferredTaxAssetsNetBeforeValuationAllowance

mgy:DrillingAdvances

mgy:LesseeOperatingLeaseLiabilityAndOperatingLeaseNotYetCommenced

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueNextTwelveMonths

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueafterFifthYear

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueinFourthandFifthYear

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueinSecondandThirdYear

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrentAndNoncurrent

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:CashEquivalentsAtCarryingValue

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractualObligation

us-gaap:ContractualObligationDueAfterFifthYear

us-gaap:ContractualObligationDueInFourthAndFifthYear

us-gaap:ContractualObligationDueInNextTwelveMonths

us-gaap:ContractualObligationDueInSecondAndThirdYear

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DeferredFinanceCostsGross

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsInvestments

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

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment
us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset
us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeAssets
us-gaap:Energy, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAverageCapPrice
us-gaap:Energy, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAverageFloorPrice
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeLiabilities
us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:EquityMethodInvestments

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebtFairValue
us-gaap:ConsolidatedEntities, us-gaap:Ownership
us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners

us-gaap:OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization

us-gaap:OilAndGasPropertySuccessfulEffortMethodGross

us-gaap:OilAndGasPropertySuccessfulEffortMethodNet

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherOilAndGasPropertySuccessfulEffortMethod

us-gaap:OtherSundryLiabilitiesCurrent

us-gaap:PurchaseObligation

us-gaap:PurchaseObligationDueInFourthAndFifthYear

us-gaap:PurchaseObligationDueInNextTwelveMonths

us-gaap:PurchaseObligationDueInSecondAndThirdYear
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforwardAmount

us-gaap:TreasuryStockCommonShares

us-gaap:TreasuryStockCommonValue

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Other Nonoperating Income Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Operating Lease Right Of Use Asset
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Operating Lease Liability Noncurrent
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
 us-gaap:CommonStockValue us-gaap:StatementClassOfStock us-gaap:CommonClassA██▅▅▅▅▅▅▁▁▁▁0.0180.0180.0170.0170.0170.0170.0170.0170.0160.0160.0160.016NA0.0003050.0002710.0002620.000269NA
 us-gaap:CommonStockValue us-gaap:StatementClassOfStock us-gaap:CommonClassB▁▃██████████0.0060.0070.0090.0090.0090.0090.0090.0090.0090.0090.0090.009NANANANANANA
 us-gaap:SharesOutstanding us-gaap:StatementClassOfStock,us-gaap:StatementEquityComponents us-gaap:CommonClassA,us-gaap:CommonStockNANA168.755168.676168.587168.473168.319168.26158.892155.837156.333155.2283.052NANANANANA
 us-gaap:SharesOutstanding us-gaap:StatementClassOfStock,us-gaap:StatementEquityComponents us-gaap:CommonClassB,us-gaap:CommonStockNANA85.7985.7985.7985.7985.7991.7991.7991.7993.34690.4510.0NANANANANA
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:TreasuryStockNANA5.4753.12.02.01.00.950.00.00.0NANANANANANANA
 us-gaap:SharesIssued us-gaap:StatementClassOfStock,us-gaap:StatementEquityComponents us-gaap:CommonClassA,us-gaap:CommonStock█▇▁184.8183.54168.755NA168.587168.473168.319NANANANANANANANANANANA
 us-gaap:SharesIssued us-gaap:StatementClassOfStock,us-gaap:StatementEquityComponents us-gaap:CommonClassB,us-gaap:CommonStock▁▃█60.52466.62485.79NA85.7985.7985.79NANANANANANANANANANANA
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:TreasuryStock█▄▁9.4737.4485.475NA2.02.01.0NANANANANANANANANANANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementClassOfStock us-gaap:CommonClassA██▄▄▄▄▄▄▂▁▁▁184.8183.54168.755168.676168.587168.473168.318168.26158.892155.837156.333155.227284NA2.5617372.7159662.6231552.690076NA
 us-gaap:CommonStockSharesIssued us-gaap:StatementClassOfStock us-gaap:CommonClassB▁▂▆▆▆▆▆████▇60.52466.62485.7985.7985.7985.7985.7991.7991.7991.7993.34690.452174NANANANANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock us-gaap:CommonClassA██▄▄▅▅▅▅▂▁▁▁175.327176.093163.28165.576166.587166.473167.318167.31158.9155.837156.3155.2NA2.5617372.7159662.6231552.690076NA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock us-gaap:CommonClassB▁▂▆▆▆▆▆████▇60.52466.62485.7985.7985.7985.885.891.891.891.893.34690.452174NANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁176.129169.636NA170.676166.572167.149NA167.108159.057158.14NA157.072NANANANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁175.169166.952NA166.467166.572167.149NA166.872156.844156.322NA151.992NANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:CommonClassA▁█66.180.3NA85.885.885.8NA91.891.893.3NA87.6NANANANANANA
 us-gaap:EarningsPerShareBasic us-gaap:StatementClassOfStock us-gaap:CommonClassA████▇▁████0.480.380.140000000000000570.05-0.11-7.340.039999999999999980.050.120.08NANANANANANANANA
 us-gaap:EarningsPerShareDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassA████▇▁████0.480.370.140000000000000570.05-0.11-7.340.0400000000000000360.050.120.08NANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
us-gaap:AllocatedShareBasedCompensationExpense █▆▁▆▇▆▆▆▇▅3.52.71.12.93.12.92.72.83.12.4NANANANANANANANA
us-gaap:GeneralAndAdministrativeExpense █▇▆▆▅▆▆▆▆▅▆▄▁▂▂24.75720.36418.44616.66315.72918.0816.78417.34519.10616.19618.50410.2971.7015.3015.708NANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ████▇▁████████████118.5791.89142.01213.356-32.567-1971.12515.94320.88636.44826.48864.88229.02147.504-4.253242-1.9522611.0295590.445977-0.063202
us-gaap:IncomeTaxExpenseBenefit █▇▇▇▇▁██████▇▇▇▇▇▇2.3980.3990.0-0.339-3.176-75.8262.3113.5295.1453.7757.9173.5380.766-0.891818-0.4099750.3603460.156092-0.022121
 us-gaap:InterestExpense us-gaap:CreditFacility,us-gaap:LongtermDebtType us-gaap:RevolvingCreditFacility,us-gaap:LineOfCredit▆▆▆▆▆██████▁1.01.01.01.01.01.11.11.11.11.11.10.8NANANANANANA
 us-gaap:InterestExpense us-gaap:DebtInstrument,us-gaap:LongtermDebtType mgy:A6.0SeniorNotesDue2026,us-gaap:SeniorNotes█▅▅▅▅▅▅▅▅▅▅▁7.76.36.36.36.36.36.36.36.36.36.34.2NANANANANANA
us-gaap:InterestIncomeExpenseNet ▁▂▂▂▂▂▂▂▂▂▂▃▆██▇▇▆-8.752-7.294-7.353-7.333-7.256-6.757-6.745-6.896-7.299-7.416-7.495-4.9590.02.608752.0735751.3572080.652722.1e-05
us-gaap:InterestPaidNet ▂█▁█▁█▁█▁█▁▁1.59212.4410.4512.9050.012.540.53912.6240.49212.5710.5390.35NANANANANANA
us-gaap:NetIncomeLoss ████▇▁████████████84.44563.24427.7459.147-18.272-1227.018.11710.54718.50613.02632.3876.70846.738-3.361424-1.5422860.6692130.289885-0.041081
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest █████▁█████████31.72728.24814.2674.548-11.119-668.2895.5156.8112.7979.68724.57818.7750.00.00.0NANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ████▇▁███83.80363.03127.7459.147-18.272-1227.018.1177.78418.506NA32.9196.17646.738-3.361424-1.5422860.6692130.289885-0.041081
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted █▁83.80763.034NANA-18.272-1227.01NA7.78418.506NANA6.176NANANANANANA
us-gaap:NonoperatingIncomeExpense ▂▃▆▃▄▄▄▄▄▄▃▂█▁▄-10.621-8.005-0.653-8.585-6.632-6.789-6.742-6.783-7.184-7.027-8.386-11.6693.544-14.31-6.7NANANA
us-gaap:OperatingCostsAndExpenses ▁▁▁▁▁█▂▂▂▂▁▁▁▁▁121.535107.767106.5799.126108.7742145.701207.025217.13199.326185.159181.394137.86632.92798.65579.8NANANA
us-gaap:OperatingIncomeLoss ████▇▁████████████129.19199.89642.66521.941-25.935-1964.33622.68527.66943.63233.51573.26840.6943.96-6.861992-4.025836-0.327649-0.206743-0.063223
us-gaap:OtherNonoperatingIncomeExpense ▆▅█▅▆▅▅▆▆▆▅▁▆▅▆0.135-0.2293.873-0.0510.013-0.472-0.2460.021-0.0130.001-1.355-7.0190.024-0.1980.124NANANA
us-gaap:ProfitLoss ████▇▁█████████116.17291.49242.01213.695-29.391-1895.29913.63217.35731.30322.71356.96525.48346.73886.44985.366NANANA
us-gaap:Revenues █▇▅▄▃▆▇██▇█▆▃▁▁▁▁▁250.726207.663149.235121.06782.839181.365229.71244.799242.958218.674254.662178.55676.8870.00.00.00.00.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
us-gaap:Assets ▁▁▁▁▁▁█████▇1498.3451455.8481453.421434.2791413.0791490.8293466.4063533.1333531.1323437.9733433.5233300.097NA658.810997656.553066652.747926652.648888NA
us-gaap:LiabilitiesAndStockholdersEquity ▁▁▁▁▁▁█████▇1498.3451455.8481453.421434.2791413.0791490.8293466.4063533.1333531.1323437.9733433.5233300.097NA658.810997656.553066NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
us-gaap:AssetsCurrent █▇▆▃▁▄▇▇▄▂▇▃312.861289.218281.526214.862182.504229.245293.218292.255230.497203.245292.359211.713NA0.3553980.725655NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue █▇█▆▅▆█▇▅▄▆▂▁▁▁190.282178.194192.561148.533116.85146.492182.633164.48996.70976.307135.75836.7150.0230.2420650.571738NA1.7760710.325021
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents █▇█▆▅▆█▇▅▄▆▂▁▁▁190.282178.194192.561148.533116.85146.492182.633164.48996.70976.307135.75836.7150.00.00.0NANANA
us-gaap:AccountsReceivableNetCurrent ▅▄▂▁▁▂▄▅▅▄▆█119.241107.22981.55961.24360.52577.744105.775120.664126.94107.388140.284167.174NANANANANANA
us-gaap:OtherAssetsCurrent ▁▂▃▅▅▄▅▆▆█▄▁2.0942.8123.6014.6134.4874.1464.5115.0475.6626.6924.0582.033NANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
us-gaap:AmortizationOfIntangibleAssets █▃▅▅▅▅▅▅▅▅▅▃▁▁▁7.2332.1133.6263.6263.6263.6263.6263.6263.6263.6263.6262.4180.00.00.0NANANA
us-gaap:FiniteLivedIntangibleAssetsNet NA7.2339.34612.97316.59920.22523.85127.47731.10434.7338.35641.983NANANANANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet ▁█210.4218.5NA203.3NANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA6.47NANANA4.035NANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent █▆▆▇▅▄▄▅▅▃▁8.976.136.9798.0744.5523.7764.464.7735.3052.0390.0NANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
us-gaap:AccountsPayableCurrent █▄▁▁▁▇▅92.13474.12562.62663.47564.53486.15479.428NANANA76.302NANANANANANANA
us-gaap:LiabilitiesCurrent ▅▁▂▁▁▅▆▇█▇█▆167.949125.935128.949124.462120.313170.7175.208190.311201.131184.46197.361178.072NA11.5820735.962718NANANA
us-gaap:OperatingLeaseLiabilityCurrent NANA1.801NANANA2.55NANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent ▇▅▆▅▅▇█▁▁▁▁75.81551.8166.32360.98755.77984.54695.783.6844.1312.4681.004NANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
us-gaap:LiabilitiesNoncurrent ▂▂▂▃▂▂██▇▆▅▁487.74485.901485.049497.636490.442491.239562.669558.869545.853536.936528.207479.016NANANANANANA
us-gaap:LongTermDebt ▁█▇▇▆▆▅386.996391.448391.115390.787390.464390.147389.835NANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▁█▇▇▆▆▅▅▅▄▄▃386.996391.448391.115390.787390.464390.147389.835389.528389.225388.928388.635388.343NANANANANANA
us-gaap:MinorityInterest ▁▁▂▂▁▂▇█████219.1234.198291.26279.547275.279285.698952.4781014.1741044.5681031.3641031.186991.959NANANANANANA
us-gaap:OtherLiabilitiesNoncurrent █▇▇▇▃▂▃▃▄▂▁▁6.595.2445.7026.0491.4870.9031.4762.0392.4230.6940.00.0NANANANANANA
us-gaap:OperatingLeaseLiabilityNoncurrent NANA5.703NANANA1.476NANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA1.843NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA1.391NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA1.139NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA1.135NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA0.6NANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▃▃▃▃▃▃██████▁842.656844.012839.422812.181802.324828.892728.5292783.9532784.1482716.5772707.9552643.0094.784NANANANANA
 us-gaap:CommonStockValue us-gaap:StatementClassOfStock us-gaap:CommonClassA██▅▅▅▅▅▅▁▁▁▁0.0180.0180.0170.0170.0170.0170.0170.0170.0160.0160.0160.016NA0.0003050.0002710.0002620.000269NA
 us-gaap:CommonStockValue us-gaap:StatementClassOfStock us-gaap:CommonClassB▁▃██████████0.0060.0070.0090.0090.0090.0090.0090.0090.0090.0090.0090.009NANANANANANA
us-gaap:AdditionalPaidInCapital ▅█▇▆▆▆▆▆▄▁▁▂1684.5791731.2341712.5441709.0431706.1211703.9961703.3621704.6521672.5161636.6551641.2371647.905NANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▂▂▁▁▁▁██████-977.761-1062.206-1125.45-1153.195-1162.342-1144.0782.9474.82367.03948.53335.5073.12NA-3.371515-0.010091NANANA
us-gaap:MinorityInterest ▁▁▂▂▁▂▇█████219.1234.198291.26279.547275.279285.698952.4781014.1741044.5681031.3641031.186991.959NANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▁3.5282.705NA2.9273.0652.879NA2.8293.1152.432NANANANANANANANA
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders █▁0.2760.155NA0.1050.2070.284NA0.4890.227NANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▄▃▂▁▅▆▇▇▄█▃187.878118.15379.12265.15730.964134.878159.008179.22192.829116.562214.79287.302NA-105.381291104.613NANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities █████▇█▇▇▆▇▁-49.722-42.884-19.147-26.682-60.359-163.8-70.171-98.867-171.896-183.314-115.749-758.515NA237.73-237.73NANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▂▂▂▂▁▂▂▂▂█-126.068-89.636-15.947-6.792-0.247-7.219-70.693-12.573-0.5317.3010.0707.905NA-132.95811133.117NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▃▆▅▂▂▄▇▅▁█▅12.088-14.36744.02831.683-29.642-36.14118.14467.7820.402-59.45199.04336.692NA0.00.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
us-gaap:AmortizationOfFinancingCosts █▅▆▅▅▅▅▅▅▅▅▁1.1080.910.9180.9130.9010.8960.8970.8920.8810.8710.8910.57NA0.00.0NANANA
us-gaap:DeferredIncomeTaxExpenseBenefit NANA0.00.0-3.181-74.6542.4963.4144.9353.4158.6353.4930.1350.309-0.118NANANA
us-gaap:DepreciationDepletionAndAmortization ▂▂▂▂▃███▇▆▆▄▁▃▃43.33242.94445.0844.73150.87142.671137.63143.894126.102115.946110.41267.47823.15763.35351.361NANANA
us-gaap:IncreaseDecreaseInAccountsPayable █▇▅▅▁▆▁▇▇▄18.0111.499-1.008-1.059-21.626.726-22.86810.45912.304-6.729NANANANANANANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▄▅▄▃▂▁▂▂▄▃▁█12.01225.6720.3160.717-17.218-28.031-14.889-7.60419.553-5.012-26.8977.5NA10.79235.484NANANA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▁▁▁▁▂▁█▂▂▂▂▁-0.853-0.605-0.5130.320.6350.32619.3863.1430.6380.6110.853-0.045NA0.456-0.035NANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▄▃▂▁▅▆▇▇▄█▃187.878118.15379.12265.15730.964134.878159.008179.22192.829116.562214.79287.302NA-105.381291104.613NANANA
us-gaap:NetIncomeLoss ████▇▁████████████84.44563.24427.7459.147-18.272-1227.018.11710.54718.50613.02632.3876.70846.738-3.361424-1.5422860.6692130.289885-0.041081
us-gaap:ProfitLoss ████▇▁█████████116.17291.49242.01213.695-29.391-1895.29913.63217.35731.30322.71356.96525.48346.73886.44985.366NANANA
us-gaap:ShareBasedCompensation █▆▃▇▇▇▆▇▇▆▅▁3.5282.7051.1582.9273.0652.8792.7132.8293.1152.4321.8510.0NA0.00.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities █████▇█▇▇▆▇▁-49.722-42.884-19.147-26.682-60.359-163.8-70.171-98.867-171.896-183.314-115.749-758.515NA237.73-237.73NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▂▂▂▂▁▂▂▂▂█-126.068-89.636-15.947-6.792-0.247-7.219-70.693-12.573-0.5317.3010.0707.905NA-132.95811133.117NANANA
us-gaap:PaymentsForRepurchaseOfCommonStock NANANA6.4790.06.483NA9.7220.00.0NA0.0NANANANANANA
 us-gaap:PaymentsForRepurchaseOfCommonStock dei:LegalEntity mgy:MagnoliaLLCNANANANANANANANANANANANANANANANANANA
 us-gaap:PaymentsForRepurchaseOfCommonStock dei:LegalEntity,us-gaap:CounterpartyName,us-gaap:RelatedPartyTransactionsByRelatedParty mgy:MagnoliaLLC,mgy:EnerVestEnergyInstitutionalFundXIVAL.P.,srt:AffiliatedEntityNANANANANANANANANANANANANANANANANANA
 us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:StatementClassOfStock us-gaap:CommonClassA█▁24.04720.281NANA0.06.483NANANANANANANANANANANANA
 us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:StatementClassOfStock us-gaap:CommonClassB█▁71.7550.781NANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31

Common Stock Value

us-gaap:CommonStockValue us-gaap:StatementClassOfStock

us-gaap:CommonStockValue

us-gaap:CommonClassA


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value18000.018000.017000.017000.017000.017000.017000.017000.016000.016000.016000.016000.0305.0271.0256.0262.0269.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6000.07000.09000.09000.09000.09000.09000.09000.09000.09000.09000.09000.0
Percentage of CommonStockValue33.338.952.952.952.952.952.952.956.256.256.256.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassB0.00.00.00.00.00.00.00.00.00.00.00.0

Shares Outstanding

us-gaap:SharesOutstanding us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonClassA, us-gaap:CommonStock


Shares
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-312018-07-30
Value1681681681681681681581551561551483.052
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB, us-gaap:CommonStock


Shares
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-312018-07-30
Value85858585859191919390830.0
Percentage of SharesOutstanding50.850.950.950.951.054.657.858.959.758.356.50.0

us-gaap:SharesOutstanding us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Shares
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5.4753.12.02.01.00.950.00.00.0
Percentage of SharesOutstanding3.21.81.21.20.60.60.00.00.0

Shares Issued

us-gaap:SharesIssued us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonClassA, us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-31
Value184183168168168168
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB, us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-31
Value606685858585
Percentage of SharesIssued32.836.350.850.950.951.0

us-gaap:SharesIssued us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Shares
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-31
Value9.4737.4485.4752.02.01.0
Percentage of SharesIssued5.14.13.21.21.20.6

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued us-gaap:StatementClassOfStock

us-gaap:CommonStockSharesIssued

us-gaap:CommonClassA


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1841831681681681681681681581551561552.5617372.7159662.5617372.6231552.690076
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value606685858585859191919390
Percentage of CommonStockSharesIssued32.836.350.850.950.950.951.054.657.858.959.758.3

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonClassA


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1751761631651661661671671581551561552.5617372.7159662.5617372.6231552.690076
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value606685858585859191919390
Percentage of CommonStockSharesOutstanding34.537.852.551.851.551.551.354.957.858.959.758.3

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value176169170166167167159158157
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Weighted
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value170166167167159158
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value175166166166167166156156151
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Weighted
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value166166167166156156
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:CommonClassA


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value668085858591919387
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic us-gaap:StatementClassOfStock

us-gaap:EarningsPerShareBasic

us-gaap:CommonClassA


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.480.380.140.05-0.11-7.340.040.050.120.08
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted us-gaap:StatementClassOfStock

us-gaap:EarningsPerShareDiluted

us-gaap:CommonClassA


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.480.370.140.05-0.11-7.340.040.050.120.08
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.52.71.12.93.12.92.72.83.12.4
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.41.30.72.43.71.61.21.11.31.1

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value2420181615181617191618101.7015.3015.708
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues9.99.812.413.819.010.07.37.17.97.47.35.82.20.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value118914213-32.567-1971.12515203626642947-4.253242-1.9522611.0295590.445977-0.063202
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues47.344.328.211.0-39.3-1086.86.98.515.012.125.516.361.80.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.3980.3990.0-0.339-3.176-75.8262.3113.5295.1453.7757.9173.5380.766-0.891818-0.4099750.5679370.3603460.156092-0.022121
Percentage of IncomeTaxExpenseBenefit100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.00.20.0-0.3-3.8-41.81.01.42.11.73.12.01.00.00.00.00.00.00.0

Interest Expense

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

us-gaap:InterestExpense

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.01.01.01.01.01.11.11.11.11.11.10.8
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.40.50.70.81.20.60.50.40.50.50.40.4
Percentage of Revenues us-gaap:RevolvingCreditFacility us-gaap:LineOfCredit0.00.00.00.00.00.00.00.00.00.00.00.0

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

mgy:A6.0SeniorNotesDue2026, us-gaap:SeniorNotes


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value7.76.36.36.36.36.36.36.36.36.36.34.2
Percentage of InterestExpense770.0630.0630.0630.0630.0572.7572.7572.7572.7572.7572.7525.0
Percentage of Revenues3.13.04.25.27.63.52.72.62.62.92.52.4
Percentage of Revenues mgy:A6.0SeniorNotesDue2026 us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.0

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-8752000.0-7294000.0-7353000.0-7333000.0-7256000.0-6757000.0-6745000.0-6896000.0-7299000.0-7416000.0-7495000.0-4959000.002608800.02073600.01636200.01357200.0652720.021.0
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-3.5-3.5-4.9-6.1-8.8-3.7-2.9-2.8-3.0-3.4-2.9-2.80.00.00.00.00.00.00.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.592120.45120.0120.539120.492120.5390.35
Percentage of InterestPaidNet100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.66.00.310.70.06.90.25.20.25.70.20.2

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value8463279.147-18.272-1227.018.117101813326.70846-3.361424-1.5422860.6141780.6692130.289885-0.041081
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues33.730.518.67.6-22.1-676.53.54.37.66.012.73.860.80.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value3128144.548-11.119-668.2895.5156.81129.68724180.00.00.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0
Percentage of Revenues12.713.69.63.8-13.4-368.52.42.85.34.49.710.50.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-07-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value8363279.147-18.272-1227.018.1177.78418326.17646-3.361424-1.5422860.6141780.6692130.289885-0.041081
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues33.430.418.67.6-22.1-676.53.53.27.612.93.560.80.00.00.00.00.00.0

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value279.147-18.272-1227.018.1177.78418130.00.00.00.00.00.0
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.00.0-0.0-0.00.00.00.0-0.0
Percentage of Revenues18.67.6-22.1-676.53.53.27.66.00.00.00.00.00.00.0
Percentage of Revenues us-gaap:CommonClassA0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302018-09-30
Value8363-18.272-1227.017.784186.176
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues33.430.4-22.1-676.53.27.63.5

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value279.147-18.272-1227.018.1177.7841813
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted0.00.0100.0100.00.0100.0100.00.0
Percentage of Revenues18.67.6-22.1-676.53.53.27.66.0
Percentage of Revenues us-gaap:CommonClassA0.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value-10621000.0-8005000.0-653000.0-8585000.0-6632000.0-6789000.0-6742000.0-6783000.0-7184000.0-7027000.0-8386000.0-11669000.03544000.0-14310000.0-6700000.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.2-3.9-0.4-7.1-8.0-3.7-2.9-2.8-3.0-3.2-3.3-6.54.60.00.0

Operating Costs And Expenses

us-gaap:OperatingCostsAndExpenses

us-gaap:OperatingCostsAndExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value121107106991082145207217199185181137329879
Percentage of OperatingCostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues48.551.971.481.9131.31183.190.188.782.084.771.277.242.80.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value129994221-25.935-1964.33622274333734043-6.861992-4.025836-0.327649-0.206743-0.063223
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues51.548.128.618.1-31.3-1083.19.911.318.015.328.822.857.20.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value135000.0-229000.03873000.0-51000.013000.0-472000.0-246000.021000.0-13000.01000.0-1355000.0-7019000.024000.0-198000.0124000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.1-0.12.6-0.00.0-0.3-0.10.0-0.00.0-0.5-3.90.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value116914213-29.391-1895.299131731225625468685
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues46.344.128.211.3-35.5-1045.05.97.112.910.422.414.360.80.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value31284.548-11.119-668.2896.81129.6872418
Percentage of ProfitLoss27.330.933.237.835.339.240.942.643.173.7
Percentage of Revenues12.713.63.8-13.4-368.52.85.34.49.70.0
Percentage of Revenues us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value84639.147-18.272-1227.01101813326.708
Percentage of ProfitLoss72.769.166.862.264.760.859.157.456.926.3
Percentage of Revenues33.730.57.6-22.1-676.54.37.66.012.70.0
Percentage of Revenues us-gaap:Parent0.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value84639.147-18.272-1227.01101813326.708
Percentage of ProfitLoss72.769.166.862.264.760.859.157.456.926.3
Percentage of Revenues33.730.57.6-22.1-676.54.37.66.012.70.0
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value25020714912182181229244242218254178760.00.00.00.00.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ProductOrService

srt:NaturalGasLiquidsReserves


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value302619108.881101915151926214.754139.782
Percentage of Revenues12.012.813.18.710.75.88.46.46.59.010.611.86.20.00.0
Percentage of Revenues12.012.813.18.710.75.88.46.46.59.010.611.86.20.00.0
Percentage of Revenues srt:NaturalGasLiquidsReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasReserves


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value3234231413162221222728143.646108.374
Percentage of Revenues13.016.715.412.315.98.99.88.79.312.511.38.04.70.00.0
Percentage of Revenues13.016.715.412.315.98.99.88.79.312.511.38.04.70.00.0
Percentage of Revenues srt:NaturalGasReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OilAndCondensate


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value188146106956015418720720417119814368176154
Percentage of Revenues75.070.571.579.073.485.381.884.984.278.578.180.289.10.00.0
Percentage of Revenues75.070.571.579.073.485.381.884.984.278.578.180.289.10.00.0
Percentage of Revenues us-gaap:OilAndCondensate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-02-21
Value1498145514531434141314903466353335313437343333006586566536526520.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value149814551453143414131490346635333531343734333300658656653
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3122892812141822292932922302032922110.3553980.7256550.993742
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.919.919.415.012.915.48.58.36.55.98.56.40.10.10.2

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-12-312017-06-302017-03-312017-02-13
Value1901781921481161461821649676135360.0230.2420650.5717380.8514661.7760710.3250210.0
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets12.712.213.210.48.39.85.34.72.72.24.01.10.00.00.10.10.30.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-312018-07-302018-06-302018-03-312017-12-312016-12-31
Value1901781921481161461821649676135360.0230.00.00.00.00.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0
Percentage of Assets12.712.213.210.48.39.85.34.72.72.24.01.10.00.00.00.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value11910781616077105120126107140167
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.07.45.64.34.35.23.13.43.63.14.15.1

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2094000.02812000.03601000.04613000.04487000.04146000.04511000.05047000.05662000.06692000.04058000.02033000.0
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.20.20.30.30.30.10.10.20.20.10.1

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value7.2332.1133.6263.6263.6263.6263.6263.6263.6263.6263.6262.4180.00.00.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value7.2339.346121620232731343841
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.60.91.21.40.70.80.91.01.11.3

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-09-30
Value210218203
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0
Percentage of Assets14.015.014.2

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-31
Value6470000.04035000.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0
Percentage of Assets0.40.1

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8970000.06130000.06979000.08074000.04552000.03776000.04460000.04773000.05305000.02039000.00
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.60.40.50.60.30.30.10.10.20.10.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value9274626364867976
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.15.14.34.44.65.82.32.2

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value167125128124120170175190201184197178115.9627181.804828
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.28.78.98.78.511.55.15.45.75.45.75.41.80.90.3

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2020-12-312019-12-31
Value1801000.02550000.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0
Percentage of Assets0.10.1

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value755166605584953.6844.1312.4681.004
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.13.64.64.33.95.72.80.10.10.10.0

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LiabilitiesNoncurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value487485485497490491562558545536528479
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.633.433.434.734.733.016.215.815.515.615.414.5

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value386391391390390390389
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.826.926.927.227.626.211.2

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value386391391390390390389389389388388388
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.826.926.927.227.626.211.211.011.011.311.311.8

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2192342912792752859521014104410311031991
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.616.120.019.519.519.227.528.729.630.030.030.1

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6590000.05244000.05702000.06049000.01487000.0903000.01476000.02039000.02423000.0694000.000
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of Assets0.40.40.40.40.10.10.00.10.10.00.00.0

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2020-12-312019-12-31
Value5703000.01476000.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0
Percentage of Assets0.40.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value1843000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value1391000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value1139000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value1135000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value600000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-30
Value7504000.04026000.04763000.05307000.0
Percentage of OperatingLeaseLiability100.0100.0100.0100.0
Percentage of Assets0.50.10.10.2

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value8162000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets0.6

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value658000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-312018-07-30
Value84284483981280282827282783278427162707264325444.784
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets56.258.057.856.656.855.678.778.878.879.078.980.10.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-312018-07-30
Value0.0180.0180.0170.0170.0170.0170.0170.0170.0160.0160.0160.0160.0150.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassA us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB, us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-312018-07-30
Value0.0060.0070.0090.0090.0090.0090.0090.0090.0090.0090.0090.0090.0090.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassB us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-312018-07-30
Value16841731171217091706170317031704167216361641164716138.37
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest199.9205.1204.0210.4212.6205.662.461.260.160.260.662.363.4175.0
Percentage of Assets112.4118.9117.8119.2120.7114.349.148.247.447.647.849.90.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-312018-07-30
Value21923429127927528595210141044103110319919330.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest26.027.734.734.434.334.534.936.437.538.038.137.536.70.0
Percentage of Assets14.616.120.019.519.519.227.528.729.630.030.030.10.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-312018-07-30
Value62360954853252754317761769173916851676165116104.784
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest74.072.365.365.665.765.565.163.662.562.061.962.563.3100.0
Percentage of Assets41.641.937.737.137.336.451.250.149.349.048.850.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-312018-07-30
Value-977.761-1062.206-1125.45-1153.195-1162.342-1144.0782746748353.12-3.588-3.588
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-116.0-125.9-134.1-142.0-144.9-138.03.02.72.41.81.30.1-0.1-75.0
Percentage of Assets-65.3-73.0-77.4-80.4-82.3-76.72.42.11.91.41.00.10.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-83.286-59.239-38.958-23.24-16.76-16.76-10.277-9.7220.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-9.9-7.0-4.6-2.9-2.1-2.0-0.4-0.30.00.00.0
Percentage of Assets-5.6-4.1-2.7-1.6-1.2-1.1-0.3-0.30.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue us-gaap:StatementClassOfStock

us-gaap:CommonStockValue

us-gaap:CommonClassA


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value18000.018000.017000.017000.017000.017000.017000.017000.016000.016000.016000.016000.0305.0271.0256.0262.0269.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6000.07000.09000.09000.09000.09000.09000.09000.09000.09000.09000.09000.0
Percentage of CommonStockValue33.338.952.952.952.952.952.952.956.256.256.256.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassB0.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value168417311712170917061703170317041672163616411647
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets112.4118.9117.8119.2120.7114.349.148.247.447.647.849.9

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-977.761-1062.206-1125.45-1153.195-1162.342-1144.0782746748353.12-3.371515-0.0100911.532195
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-65.3-73.0-77.4-80.4-82.3-76.72.42.11.91.41.00.1-0.5-0.00.2

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2192342912792752859521014104410311031991
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.616.120.019.519.519.227.528.729.630.030.030.1

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value3.5282.7052.9273.0652.8792.8293.1152.432
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2.5771.8352.9273.0652.8792.8293.1152.432
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue73.067.8100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Adjustments
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.9510.871.0420.977
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue27.032.234.033.9
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.0

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2.5771.8352.9273.0652.8792.8293.1152.432
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue73.067.8100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.0

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value276000.0155000.0105000.0207000.0284000.0489000.0227000.0
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value276000.0155000.0105000.0207000.0284000.0489000.0227000.0
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value18711879653013415917919211621487-105.381291104
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues74.956.953.053.837.474.469.273.279.453.384.30.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-49.722-42.884-19.147-26.682-60.359-163.8-70.171-98.867-171.896-183.314-115.749-758.515237-237.73
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-19.8-20.7-12.8-22.0-72.9-90.3-30.5-40.4-70.8-83.8-45.50.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-126.068-89.636-15.947-6.792-0.247-7.219-70.693-12.573-0.5317.3010.0707-132.95811133
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0
Percentage of Revenues-50.3-43.2-10.7-5.6-0.3-4.0-30.8-5.1-0.23.30.00.00.00.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value12-14.3674431-29.642-36.141186720-59.45199360.00.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of Revenues4.8-6.929.526.2-35.8-19.97.927.78.4-27.238.90.00.00.0

Amortization Of Financing Costs

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfFinancingCosts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1108000.0910000.0918000.0913000.0901000.0896000.0897000.0892000.0881000.0871000.0891000.0570000.000
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value0.00.0-3.181-74.6542.4963.4144.9353.4158.6353.4930.1350.309-0.118
Percentage of DeferredIncomeTaxExpenseBenefit0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value434245445014213714312611511067236351
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1811-1.008-1.059-21.626.726-22.8681012-6.729
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1225200.717-17.218-28.031-14.889-7.60419-5.012-26.89771035
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


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-0.853-0.605-0.5130.320.6350.326193.1430.6380.6110.853-0.0450.456-0.035
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value18711879653013415917919211621487-105.381291104
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues74.956.953.053.837.474.469.273.279.453.384.30.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value8463279.147-18.272-1227.018.117101813326.70846-3.361424-1.5422860.6141780.6692130.289885-0.041081
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues33.730.518.67.6-22.1-676.53.54.37.66.012.73.860.80.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value116914213-29.391-1895.299131731225625468685
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues46.344.128.211.3-35.5-1045.05.97.112.910.422.414.360.80.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value31284.548-11.119-668.2896.81129.6872418
Percentage of ProfitLoss27.330.933.237.835.339.240.942.643.173.7
Percentage of Revenues12.713.63.8-13.4-368.52.85.34.49.70.0
Percentage of Revenues us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value84639.147-18.272-1227.01101813326.708
Percentage of ProfitLoss72.769.166.862.264.760.859.157.456.926.3
Percentage of Revenues33.730.57.6-22.1-676.54.37.66.012.70.0
Percentage of Revenues us-gaap:Parent0.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value84639.147-18.272-1227.01101813326.708
Percentage of ProfitLoss72.769.166.862.264.760.859.157.456.926.3
Percentage of Revenues33.730.57.6-22.1-676.54.37.66.012.70.0
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.5282.7051.1582.9273.0652.8792.7132.8293.1152.4321.8510.00.00.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-49.722-42.884-19.147-26.682-60.359-163.8-70.171-98.867-171.896-183.314-115.749-758.515237-237.73
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-19.8-20.7-12.8-22.0-72.9-90.3-30.5-40.4-70.8-83.8-45.50.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-126.068-89.636-15.947-6.792-0.247-7.219-70.693-12.573-0.5317.3010.0707-132.95811133
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0
Percentage of Revenues-50.3-43.2-10.7-5.6-0.3-4.0-30.8-5.1-0.23.30.00.00.00.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value6.4790.06.4839.7220.00.00.0
Percentage of PaymentsForRepurchaseOfCommonStock100.00.0100.0100.00.00.00.0

us-gaap:PaymentsForRepurchaseOfCommonStock dei:LegalEntity

mgy:MagnoliaLLC


Payments
Period End2021-03-052019-12-18
Value5069
Percentage of PaymentsForRepurchaseOfCommonStock0.00.0

us-gaap:PaymentsForRepurchaseOfCommonStock dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty

mgy:MagnoliaLLC, mgy:EnerVestEnergyInstitutionalFundXIVAL.P., srt:AffiliatedEntity


Payments
Period End2021-03-052019-12-18
Value3345
Percentage of PaymentsForRepurchaseOfCommonStock0.00.0

us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Payments
Period End2021-06-302021-03-312020-06-302020-03-31
Value24200.06.483
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.0100.0

us-gaap:CommonClassB


Payments
Period End2021-06-302021-03-31
Value7150
Percentage of PaymentsForRepurchaseOfCommonStock0.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.00.40.13.9610.0980.038-0.0010.1690.1410.142
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2021-06-302021-03-312020-12-312020-09-30
Value210218201203
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0

mgy:AdjustmentsToAdditionalPaidInCapitalNoncompeteSettlement

mgy:AdjustmentsToAdditionalPaidInCapitalNoncompeteSettlement


Adjustments
Period End2021-06-302021-03-31
Value-24922000.0-17152000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalNoncompeteSettlement100.0100.0

mgy:AdjustmentsToAdditionalPaidInCapitalNoncompeteSettlement us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-31
Value-18527000.0-11231000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalNoncompeteSettlement74.365.5

us-gaap:NoncontrollingInterest


Adjustments
Period End2021-06-302021-03-31
Value-6395000.0-5921000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalNoncompeteSettlement25.734.5

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-31
Value-18527000.0-11231000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalNoncompeteSettlement74.365.5

mgy:BusinessCombinationNonCompeteAgreementCashPaidUponComplianceOfNonCompeteAgreementMilestonesMilestone2 us-gaap:BusinessAcquisition

mgy:BusinessCombinationNonCompeteAgreementCashPaidUponComplianceOfNonCompeteAgreementMilestonesMilestone2

mgy:EnerVest


Business
Period End2021-06-30
Value24
Percentage of BusinessCombinationNonCompeteAgreementCashPaidUponComplianceOfNonCompeteAgreementMilestonesMilestone2100.0

mgy:BusinessCombinationNonCompeteAgreementCashValueOfEquityInterestsAuthorizedForIssuanceUponComplianceOfNonCompeteAgreementMilestonesMilestone1 us-gaap:BusinessAcquisition, us-gaap:StatementClassOfStock

mgy:BusinessCombinationNonCompeteAgreementCashValueOfEquityInterestsAuthorizedForIssuanceUponComplianceOfNonCompeteAgreementMilestonesMilestone1

mgy:EnerVest, us-gaap:CommonClassA


Business
Period End2021-01-31
Value2000000.0
Percentage of BusinessCombinationNonCompeteAgreementCashValueOfEquityInterestsAuthorizedForIssuanceUponComplianceOfNonCompeteAgreementMilestonesMilestone1100.0

mgy:BusinessCombinationNonCompeteAgreementEquityInterestsAuthorizedForCashValueSettlementUponAchievementOfStockPriceThresholds us-gaap:BusinessAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:Vesting

mgy:BusinessCombinationNonCompeteAgreementEquityInterestsAuthorizedForCashValueSettlementUponAchievementOfStockPriceThresholds

mgy:EnerVest, srt:AffiliatedEntity, us-gaap:CommonClassA, us-gaap:SubsequentEvent, us-gaap:ShareBasedCompensationAwardTrancheOne


Business
Period End2021-01-31
Value2000000.0
Percentage of BusinessCombinationNonCompeteAgreementEquityInterestsAuthorizedForCashValueSettlementUponAchievementOfStockPriceThresholds100.0

mgy:BusinessCombinationNonCompeteAgreementEquityInterestsAuthorizedForIssuanceUponComplianceOfNonCompeteAgreementMilestonesMilestone1 us-gaap:BusinessAcquisition, us-gaap:StatementClassOfStock

mgy:BusinessCombinationNonCompeteAgreementEquityInterestsAuthorizedForIssuanceUponComplianceOfNonCompeteAgreementMilestonesMilestone1

mgy:EnerVest, us-gaap:CommonClassA


Business
Period End2021-01-31
Value400000.0
Percentage of BusinessCombinationNonCompeteAgreementEquityInterestsAuthorizedForIssuanceUponComplianceOfNonCompeteAgreementMilestonesMilestone1100.0

mgy:BusinessCombinationNonCompeteAgreementEquityInterestsIssuedForSettlement us-gaap:BusinessAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:Vesting

mgy:BusinessCombinationNonCompeteAgreementEquityInterestsIssuedForSettlement

mgy:EnerVest, srt:AffiliatedEntity, us-gaap:CommonClassA, us-gaap:SubsequentEvent, us-gaap:ShareBasedCompensationAwardTrancheOne


Business
Period End2021-02-01
Value400000.0
Percentage of BusinessCombinationNonCompeteAgreementEquityInterestsIssuedForSettlement100.0

mgy:BusinessCombinationNonCompeteAgreementEquityInterestsIssuedUponComplianceOfNonCompeteAgreementMilestonesMilestone1 us-gaap:BusinessAcquisition, us-gaap:StatementClassOfStock

mgy:BusinessCombinationNonCompeteAgreementEquityInterestsIssuedUponComplianceOfNonCompeteAgreementMilestonesMilestone1

mgy:EnerVest, us-gaap:CommonClassA


Business
Period End2021-02-01
Value400000.0
Percentage of BusinessCombinationNonCompeteAgreementEquityInterestsIssuedUponComplianceOfNonCompeteAgreementMilestonesMilestone1100.0

mgy:BusinessCombinationNoncompeteAgreementEquityInterestsAuthorizedforIssuanceUponAchievementofStockPriceThresholds us-gaap:BusinessAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType, us-gaap:Vesting

mgy:BusinessCombinationNoncompeteAgreementEquityInterestsAuthorizedforIssuanceUponAchievementofStockPriceThresholds

mgy:EnerVest, srt:AffiliatedEntity, us-gaap:CommonClassA, us-gaap:SubsequentEvent, us-gaap:ShareBasedCompensationAwardTrancheOne


Business
Period End2021-01-31
Value400000.0
Percentage of BusinessCombinationNoncompeteAgreementEquityInterestsAuthorizedforIssuanceUponAchievementofStockPriceThresholds100.0

mgy:EnerVest, srt:AffiliatedEntity, us-gaap:CommonClassA, us-gaap:SubsequentEvent, us-gaap:ShareBasedCompensationAwardTrancheTwo


Business
Period End2021-01-31
Value1600000.0
Percentage of BusinessCombinationNoncompeteAgreementEquityInterestsAuthorizedforIssuanceUponAchievementofStockPriceThresholds400.0

mgy:DebtInstrumentModificationTransactionFees us-gaap:DebtInstrument, us-gaap:LongtermDebtType

mgy:DebtInstrumentModificationTransactionFees

mgy:A6.0SeniorNotesDue2026, us-gaap:SeniorNotes


Debt
Period End2021-06-30
Value1100000.0
Percentage of DebtInstrumentModificationTransactionFees100.0

mgy:GasGatheringTransportationMarketingandProcessingCosts1

mgy:GasGatheringTransportationMarketingandProcessingCosts1


Gas
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value8.9638.7998.0665.7716.7888.028.9089.277.4319.3158.6995.7462.246.2114.478
Percentage of GasGatheringTransportationMarketingandProcessingCosts1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mgy:ImpairmentOfProvedOilAndGasProperties

mgy:ImpairmentOfProvedOilAndGasProperties


Impairment
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0.00.00.013810.00.0
Percentage of ImpairmentOfProvedOilAndGasProperties0.00.00.0100.00.00.0

mgy:IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid

mgy:IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid


Increase
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5.409-31.562473.481-9.283-15.254615.39145
Percentage of IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0

mgy:IncreaseDecreaseinDrillingAdvances

mgy:IncreaseDecreaseinDrillingAdvances


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
Value262000.0-2823000.03332000.0-169000.0-220000.0563000.0-1755000.0868000.0-11672000.0599000.06183000.03376000.000
Percentage of IncreaseDecreaseinDrillingAdvances100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

mgy:NoncashExplorationExpense

mgy:NoncashExplorationExpense


Noncash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.370.06.445550.6180.0530.00.4830.5670.00.00.0
Percentage of NoncashExplorationExpense100.00.0100.0100.0100.0100.00.0100.0100.00.00.00.0

mgy:PaymentsForComplianceOfNonCompeteAgreement

mgy:PaymentsForComplianceOfNonCompeteAgreement


Payments
Period End2021-06-302021-03-31
Value2417
Percentage of PaymentsForComplianceOfNonCompeteAgreement100.0100.0

mgy:PaymentsForSettlementOfNonCompeteAgreement us-gaap:BusinessAcquisition, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType, us-gaap:Vesting

mgy:PaymentsForSettlementOfNonCompeteAgreement

mgy:EnerVest, srt:AffiliatedEntity, us-gaap:SubsequentEvent, us-gaap:ShareBasedCompensationAwardTrancheOne


Payments
Period End2021-02-01
Value17
Percentage of PaymentsForSettlementOfNonCompeteAgreement100.0

mgy:PaymentsToAcquireOilAndGasPropertyAndEquipmentChangesInWorkingCapital

mgy:PaymentsToAcquireOilAndGasPropertyAndEquipmentChangesInWorkingCapital


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-13.5581.7445.382-5.40931-7.181-3.4819.147
Percentage of PaymentsToAcquireOilAndGasPropertyAndEquipmentChangesInWorkingCapital100.0100.0100.0100.0100.0100.0100.0100.0

mgy:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsinPeriodFairValue us-gaap:AwardType

mgy:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsinPeriodFairValue

mgy:PerformanceRestrictedStockUnitsPRSUs


Sharebased
Period End2021-06-302021-03-31
Value100000.09400000.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsinPeriodFairValue100.0100.0

us-gaap:PerformanceShares


Sharebased
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0002500000.000100000.03600000.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsinPeriodFairValue0.00.00.00.00.00.00.00.0

mgy:StockIssuedDuringPeriodSharesNonCompeteSettlement us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

mgy:StockIssuedDuringPeriodSharesNonCompeteSettlement

us-gaap:CommonClassA, us-gaap:CommonStock


Stock
Period End2021-03-31
Value375000.0
Percentage of StockIssuedDuringPeriodSharesNonCompeteSettlement100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value61000.01238000.0180000.033000.0452000.0532000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value44000.0839000.0180000.033000.0452000.0532000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation72.167.8100.0100.0100.0100.0

us-gaap:NoncontrollingInterest


Adjustments
Period End2021-06-302021-03-312020-06-302020-03-31
Value17000.0399000.011000.0154000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation27.932.233.334.1

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value44000.0839000.0180000.033000.0452000.0532000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation72.167.8100.0100.0100.0100.0

us-gaap:AssetRetirementObligationAccretionExpense

us-gaap:AssetRetirementObligationAccretionExpense


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value1405000.01331000.01315000.01501000.01464000.01438000.01417000.01394000.01373000.01328000.01277000.0391000.021000.0-13000.096000.0
Percentage of AssetRetirementObligationAccretionExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-06-302021-03-312020-06-302020-03-312019-03-312018-12-312018-09-302018-03-31
Value1314-31.56247115.3914539
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:SubsequentEventType

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:SubsequentEvent


Common
Period End2021-08-02
Value0.08
Percentage of CommonStockDividendsPerShareDeclared100.0

us-gaap:CurrentFederalTaxExpenseBenefit

us-gaap:CurrentFederalTaxExpenseBenefit


Current
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value1645000.0005000.0-1172000.000-176000.0177000.0-1054000.00000
Percentage of CurrentFederalTaxExpenseBenefit100.00.00.0100.0100.00.00.0100.0100.0100.00.00.00.00.0

us-gaap:CurrentIncomeTaxExpenseBenefit

us-gaap:CurrentIncomeTaxExpenseBenefit


Current
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value2398000.0399000.00-339000.05000.0-1172000.0-185000.0115000.0210000.0360000.0-718000.045000.0631000.0264000.0564000.0
Percentage of CurrentIncomeTaxExpenseBenefit100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CurrentStateAndLocalTaxExpenseBenefit

us-gaap:CurrentStateAndLocalTaxExpenseBenefit


Current
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value753000.0399000.00-339000.000-185000.0115000.0386000.0183000.0336000.045000.0631000.0264000.0564000.0
Percentage of CurrentStateAndLocalTaxExpenseBenefit100.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFederalIncomeTaxExpenseBenefit

us-gaap:DeferredFederalIncomeTaxExpenseBenefit


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value0.00.0-2.916-68.8772.2293.1355.0923.3617.9383.4930.00.00.0
Percentage of DeferredFederalIncomeTaxExpenseBenefit0.00.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit

us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value00-265000.0-5777000.0267000.0279000.0-157000.054000.0697000.00135000.0309000.0-118000.0
Percentage of DeferredStateAndLocalIncomeTaxExpenseBenefit0.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DerivativeGainLossOnDerivativeNet


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value-2004000.0-482000.02773000.0-2208000.00000003865000.0-14800000.0-7192000.0
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.00.00.00.00.00.00.0100.0100.0100.0

us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure us-gaap:Energy, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure

srt:NaturalGasPerThousandCubicFeet, mgy:EnergyRelatedDerivativeMaturityNextFiscalYear


Derivative
Period End2021-06-302021-03-312020-12-31
Value-4.557.650.0
Percentage of DerivativeNonmonetaryNotionalAmountEnergyMeasure100.0100.00.0

us-gaap:DistributionMadeToLimitedLiabilityCompanyLLCMemberDistributionsDeclaredPerUnit us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType

us-gaap:DistributionMadeToLimitedLiabilityCompanyLLCMemberDistributionsDeclaredPerUnit

mgy:MagnoliaLLCUnits, us-gaap:SubsequentEvent


Distribution
Period End2021-08-02
Value0.08
Percentage of DistributionMadeToLimitedLiabilityCompanyLLCMemberDistributionsDeclaredPerUnit100.0

us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal

mgy:IronwoodEagleFordMidstream


Equity
Period End2020-10-23
Value5100000.0
Percentage of EquityMethodInvestmentRealizedGainLossOnDisposal100.0

us-gaap:ExplorationExpense

us-gaap:ExplorationExpense


Exploration
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value0.0622.0623.7440.7016.4625562.7243.9243.6172.4760.661110.040.350.102
Percentage of ExplorationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfDerivatives

us-gaap:GainLossOnSaleOfDerivatives


Gain
Period End2021-06-30
Value-166000.0
Percentage of GainLossOnSaleOfDerivatives100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value54000.01007000.0611000.0440000.0249000.092000.0128000.0388000.0464000.0309000.0-345000.0688000.0368000.0
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-06-302018-03-312017-06-302017-03-31
Value6.675-12.99713-1.512.589-16.5473.198-7.92515-29.9555.3536613.7724590.5209530.041102
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MinorityInterestPeriodIncreaseDecrease us-gaap:StatementEquityComponents

us-gaap:MinorityInterestPeriodIncreaseDecrease

us-gaap:AdditionalPaidInCapital


Minority
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-31
Value-30.662280.175-0.907-1.793280.108-0.919-14.649-39.366206
Percentage of MinorityInterestPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-31
Value30-28.924-0.1750.9071.793-36.7150.6340.8321439-206.966
Percentage of MinorityInterestPeriodIncreaseDecrease-100.0-100.0-100.0-100.0-100.0-130.1587.0-90.5-100.0-100.0-100.0

us-gaap:Parent


Minority
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-31
Value-30.662280.175-0.907-1.793280.108-0.919-14.649-39.366206
Percentage of MinorityInterestPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseExpense

us-gaap:OperatingLeaseExpense


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value21191718182423242421
Percentage of OperatingLeaseExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1000.084000.0-1331000.01007000.0605000.0447000.0151000.098000.035000.0393000.0555000.0218000.0773000.0368000.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value239000.0416000.0306000.0497000.0145000.0200000.0-5000.0-1000.0445000.0-197000.0350000.0000
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:PaymentsToAcquireBusinessTwoNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessTwoNetOfCashAcquired


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value8.8510.5580.03.920.392690.01.318385310135
Percentage of PaymentsToAcquireBusinessTwoNetOfCashAcquired100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireOilAndGasPropertyAndEquipment

us-gaap:PaymentsToAcquireOilAndGasPropertyAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5440402735947097132134107338187
Percentage of PaymentsToAcquireOilAndGasPropertyAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToMinorityShareholders

us-gaap:PaymentsToMinorityShareholders


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value276000.0155000.086000.0104000.0206000.0284000.0708000.0490000.0226000.0000
Percentage of PaymentsToMinorityShareholders100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value-97000.0-1267000.0-142000.0-209000.0-41000.0-452000.0-337000.0-2361000.0-305000.000-1009000.00-14710.0-186970.00
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0100.0100.00.0

us-gaap:ProceedsFromSaleOfEquityMethodInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:ProceedsFromSaleOfEquityMethodInvestments

mgy:IronwoodEagleFordMidstream


Proceeds
Period End2020-10-23
Value27
Percentage of ProceedsFromSaleOfEquityMethodInvestments100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value3634000.053000.0423000.03992000.01508000.000338000.03866000.02516000.000
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.00.00.0100.0100.0100.00.00.0

us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock

us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction

mgy:EnerVestEnergyInstitutionalFundXIVAL.P., srt:AffiliatedEntity, us-gaap:CommonClassA


Sale
Period End2021-03-05
Value5.4
Percentage of SaleOfStockNumberOfSharesIssuedInTransaction100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

mgy:PerformanceRestrictedStockUnitsPRSUs


Share
Period End2021-06-302021-03-31
Value09.33
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue0.0100.0

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value09.131.310.77000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue0.097.90.00.00.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value09.960.1310.070011.05000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue0.0106.80.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

mgy:PerformanceRestrictedStockUnitsPRSUs


Share
Period End2021-06-302021-03-31
Value12.199.33
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0

us-gaap:PerformanceShares


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0006.14000.0313.8414.58
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value11.829.69-0.616.465.957.45-0.05-0.08-0.1112.5213.97
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue97.0103.90.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value14.5814.58014.5814.5814.58014.5800
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0100.00.0100.0100.0100.00.0100.00.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value6.659.5014.4312.2512.68-0.3314.5800
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue45.665.20.099.084.087.00.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

mgy:PerformanceRestrictedStockUnitsPRSUs


Share
Period End2021-06-302021-03-31
Value055.18
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.0100.0

us-gaap:PerformanceShares


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-03-31
Value0033.1650.3350.3361
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

mgy:PerformanceRestrictedStockUnitsPRSUs


Share
Period End2021-06-302021-03-31
Value00.56
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.0100.0

us-gaap:PerformanceShares


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-03-31
Value001.14840.01160.0248
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonClassA, us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value160000.0244000.089000.0114000.0154000.0189000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0

us-gaap:StockRedeemedOrCalledDuringPeriodShares dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock

us-gaap:StockRedeemedOrCalledDuringPeriodShares

mgy:EnerVestEnergyInstitutionalFundXIVAL.P., srt:AffiliatedEntity, mgy:MagnoliaLLCUnits


Stock
Period End2021-03-05
Value9.4
Percentage of StockRedeemedOrCalledDuringPeriodShares100.0

mgy:EnerVestEnergyInstitutionalFundXIVAL.P., srt:AffiliatedEntity, us-gaap:CommonClassB


Stock
Period End2021-03-05
Value9.4
Percentage of StockRedeemedOrCalledDuringPeriodShares100.0

us-gaap:StockRedeemedOrCalledDuringPeriodShares dei:LegalEntity, us-gaap:StatementClassOfStock

mgy:EnerVest, mgy:MagnoliaLLCUnits


Stock
Period End2021-03-05
Value14
Percentage of StockRedeemedOrCalledDuringPeriodShares151.1

mgy:EnerVest, us-gaap:CommonClassB


Stock
Period End2021-03-05
Value14
Percentage of StockRedeemedOrCalledDuringPeriodShares151.1

us-gaap:StockRedeemedOrCalledDuringPeriodShares us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312018-07-31
Value-1.1-14.1660.001
Percentage of StockRedeemedOrCalledDuringPeriodShares0.00.00.0

us-gaap:CommonClassB, us-gaap:CommonStock


Stock
Period End2021-06-302021-03-31
Value1.114
Percentage of StockRedeemedOrCalledDuringPeriodShares0.00.0

us-gaap:StockRedeemedOrCalledDuringPeriodValue us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:StockRedeemedOrCalledDuringPeriodValue

us-gaap:CommonClassA, us-gaap:CommonStock


Stock
Period End2021-03-31
Value-1000.0
Percentage of StockRedeemedOrCalledDuringPeriodValue100.0

us-gaap:CommonClassB, us-gaap:CommonStock


Stock
Period End2021-03-31
Value1000.0
Percentage of StockRedeemedOrCalledDuringPeriodValue-100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

mgy:MagnoliaLLC, mgy:EnerVestEnergyInstitutionalFundXIVAL.P., srt:AffiliatedEntity, mgy:MagnoliaLLCUnits


Stock
Period End2021-03-052019-12-18
Value3300000.04000000.0
Percentage of StockRepurchasedAndRetiredDuringPeriodShares100.0100.0

mgy:MagnoliaLLC, mgy:EnerVestEnergyInstitutionalFundXIVAL.P., srt:AffiliatedEntity, us-gaap:CommonClassB


Stock
Period End2021-03-052019-12-18
Value3300000.04000000.0
Percentage of StockRepurchasedAndRetiredDuringPeriodShares100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares dei:LegalEntity, us-gaap:StatementClassOfStock

mgy:MagnoliaLLC, mgy:MagnoliaLLCUnits


Stock
Period End2021-03-052019-12-18
Value5000000.06000000.0
Percentage of StockRepurchasedAndRetiredDuringPeriodShares151.5150.0

mgy:MagnoliaLLC, us-gaap:CommonClassB


Stock
Period End2021-03-052019-12-18
Value5000000.06000000.0
Percentage of StockRepurchasedAndRetiredDuringPeriodShares151.5150.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue us-gaap:StatementClassOfStock

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:CommonClassB


Stock
Period End2021-06-302021-03-31
Value7150
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassB, us-gaap:NoncontrollingInterest


Stock
Period End2021-06-302021-03-31
Value7150
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0

us-gaap:TaxAdjustmentsSettlementsAndUnusualProvisions

us-gaap:TaxAdjustmentsSettlementsAndUnusualProvisions


Tax
Period End2020-12-312020-03-31
Value0-1200000.0
Percentage of TaxAdjustmentsSettlementsAndUnusualProvisions0.0100.0

us-gaap:TaxesExcludingIncomeAndExciseTaxes

us-gaap:TaxesExcludingIncomeAndExciseTaxes


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-07-302018-06-302018-03-31
Value13108.3767.3315.5251012131314139.3512.087128.769
Percentage of TaxesExcludingIncomeAndExciseTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockSharesAcquired us-gaap:StatementClassOfStock

us-gaap:TreasuryStockSharesAcquired

us-gaap:CommonClassA


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2100000.01900000.02400000.01100000.001000000.050000.0950000.0
Percentage of TreasuryStockSharesAcquired100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:TreasuryStockSharesAcquired us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:TreasuryStock


Treasury
Period End2021-06-302021-03-312020-09-302020-03-31
Value2025000.01973000.01100000.01000000.0
Percentage of TreasuryStockSharesAcquired96.4103.8100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementClassOfStock

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:CommonClassA


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2420156.480.06.4830.69.7
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:Parent


Treasury
Period End2021-06-302021-03-312020-09-302020-03-31
Value24206.486.483
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0

us-gaap:CommonClassA, us-gaap:TreasuryStock


Treasury
Period End2021-06-302021-03-312020-09-302020-03-31
Value24206.486.483
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic


Undistributed
Period End2021-06-302021-03-31
Value642000.0213000.0
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic100.0100.0

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted


Undistributed
Period End2021-06-302021-03-31
Value638000.0210000.0
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted100.0100.0

us-gaap:UnrealizedGainLossOnDerivatives

us-gaap:UnrealizedGainLossOnDerivatives


Unrealized
Period End2021-06-302021-03-312020-12-312020-09-30
Value-1838000.0-500000.02477000.0-2200000.0
Percentage of UnrealizedGainLossOnDerivatives100.0100.0100.0100.0

us-gaap:VariableInterestEntityOwnershipPercentage us-gaap:ConsolidatedEntities, us-gaap:Ownership

us-gaap:VariableInterestEntityOwnershipPercentage

us-gaap:VariableInterestEntityPrimaryBeneficiary, mgy:MagnoliaLLC


Variable
Period End2021-06-302021-03-312020-12-31
Value1.772.6-0.4
Percentage of VariableInterestEntityOwnershipPercentage100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312019-09-302019-06-302018-09-30
Value960000.02684000.0236000.02213000.05080000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Weighted
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value4209000.000236000.02213000.01818000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment0.00.00.0100.0100.00.0

dei:EntityCommonStockSharesOutstanding us-gaap:StatementClassOfStock

dei:EntityCommonStockSharesOutstanding

us-gaap:CommonClassA


Entity
Period End2020-08-032020-05-082020-02-242019-11-042019-08-062019-05-062019-02-222018-11-132018-08-102018-05-012018-02-072017-11-012017-08-04
Value16616616716716815515615614865656565
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Entity
Period End2020-08-032020-05-082020-02-242019-11-042019-08-062019-05-062019-02-222018-11-132018-08-10
Value858585919191939383
Percentage of EntityCommonStockSharesOutstanding51.551.551.354.954.658.959.759.756.5

mgy:AccruedCapitalExpendituresCurrent

mgy:AccruedCapitalExpendituresCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value2814162116474050
Percentage of AccruedCapitalExpendituresCurrent100.0100.0100.0100.0100.0100.0100.0100.0

mgy:AccruedGatheringTransportationAndProcessingCurrent

mgy:AccruedGatheringTransportationAndProcessingCurrent


Accrued
Period End2021-03-312020-12-31
Value6800000.06101000.0
Percentage of AccruedGatheringTransportationAndProcessingCurrent100.0100.0

mgy:AccruedGeneralAndAdministrativeExpensesCurrent

mgy:AccruedGeneralAndAdministrativeExpensesCurrent


Accrued
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value9.155119.7036.2929.753
Percentage of AccruedGeneralAndAdministrativeExpensesCurrent100.0100.0100.0100.0100.0

mgy:AccruedGeneralandAdministrativeExpensesCurrent

mgy:AccruedGeneralandAdministrativeExpensesCurrent


Accrued
Period End2020-12-312019-12-312018-12-31
Value119.75317
Percentage of AccruedGeneralandAdministrativeExpensesCurrent100.0100.0100.0

mgy:AccruedInterestCurrent

mgy:AccruedInterestCurrent


Accrued
Period End2021-06-302020-12-312020-06-302019-12-312018-12-31
Value10.010.010.010.010
Percentage of AccruedInterestCurrent100.0100.0100.0100.0100.0

mgy:AssetsNoncurrentExcludingOilAndGasPropertySuccessfulEffortMethodNet

mgy:AssetsNoncurrentExcludingOilAndGasPropertySuccessfulEffortMethodNet


Assets
Period End2021-06-302021-03-312020-12-312019-12-31
Value13182256
Percentage of AssetsNoncurrentExcludingOilAndGasPropertySuccessfulEffortMethodNet100.0100.0100.0100.0

mgy:BusinessCombinationNonCompeteAgreementCashPaidUponComplianceOfNonCompeteAgreementMilestonesMilestone1 us-gaap:BusinessAcquisition

mgy:BusinessCombinationNonCompeteAgreementCashPaidUponComplianceOfNonCompeteAgreementMilestonesMilestone1

mgy:EnerVest


Business
Period End2021-02-01
Value17
Percentage of BusinessCombinationNonCompeteAgreementCashPaidUponComplianceOfNonCompeteAgreementMilestonesMilestone1100.0

mgy:DeferredTaxAssetsCapitalizedTransactionCosts

mgy:DeferredTaxAssetsCapitalizedTransactionCosts


Deferred
Period End2020-12-312019-12-312018-12-31
Value2937000.03185000.06677000.0
Percentage of DeferredTaxAssetsCapitalizedTransactionCosts100.0100.0100.0

mgy:DeferredTaxAssetsNetBeforeValuationAllowance

mgy:DeferredTaxAssetsNetBeforeValuationAllowance


Deferred
Period End2020-12-31
Value201
Percentage of DeferredTaxAssetsNetBeforeValuationAllowance100.0

mgy:DrillingAdvances

mgy:DrillingAdvances


Drilling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.2440.9833.8050.4730.6420.8630.2992.0551.18612125.791
Percentage of DrillingAdvances100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mgy:LesseeOperatingLeaseLiabilityAndOperatingLeaseNotYetCommenced

mgy:LesseeOperatingLeaseLiabilityAndOperatingLeaseNotYetCommenced


Lessee
Period End2020-12-31
Value8162000.0
Percentage of LesseeOperatingLeaseLiabilityAndOperatingLeaseNotYetCommenced100.0

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueNextTwelveMonths

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value2054000.0
Percentage of LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueNextTwelveMonths100.0

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueafterFifthYear

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueafterFifthYear


Lessee
Period End2020-12-31
Value600000.0
Percentage of LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueafterFifthYear100.0

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueinFourthandFifthYear

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueinFourthandFifthYear


Lessee
Period End2020-12-31
Value2274000.0
Percentage of LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueinFourthandFifthYear100.0

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueinSecondandThirdYear

mgy:LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueinSecondandThirdYear


Lessee
Period End2020-12-31
Value3234000.0
Percentage of LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueinSecondandThirdYear100.0

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent


Accrual
Period End2020-09-302019-12-31
Value7027000.08741000.0
Percentage of AccrualForTaxesOtherThanIncomeTaxesCurrent100.0100.0

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrentAndNoncurrent

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrentAndNoncurrent


Accrual
Period End2021-03-312020-12-312019-12-31
Value6577000.08145000.08741000.0
Percentage of AccrualForTaxesOtherThanIncomeTaxesCurrentAndNoncurrent100.0100.0100.0

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligation


Asset
Period End2020-12-312019-12-312019-03-312018-12-312018-09-302018-07-312018-07-302017-12-312016-12-31
Value88959085440.04.5013.9292.421
Percentage of AssetRetirementObligation100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:AssetRetirementObligationsNoncurrent


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value9489881009897939391898443
Percentage of AssetRetirementObligationsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashEquivalentsAtCarryingValue

us-gaap:CashEquivalentsAtCarryingValue


Cash
Period End2020-12-312019-12-312018-12-31
Value192182135
Percentage of CashEquivalentsAtCarryingValue100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerAssetNetCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-07-31
Value105957252516810011310089
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractualObligation

us-gaap:ContractualObligation


Contractual
Period End2020-12-31
Value10
Percentage of ContractualObligation100.0

us-gaap:ContractualObligationDueAfterFifthYear

us-gaap:ContractualObligationDueAfterFifthYear


Contractual
Period End2020-12-31
Value600000.0
Percentage of ContractualObligationDueAfterFifthYear100.0

us-gaap:ContractualObligationDueInFourthAndFifthYear

us-gaap:ContractualObligationDueInFourthAndFifthYear


Contractual
Period End2020-12-31
Value2658000.0
Percentage of ContractualObligationDueInFourthAndFifthYear100.0

us-gaap:ContractualObligationDueInNextTwelveMonths

us-gaap:ContractualObligationDueInNextTwelveMonths


Contractual
Period End2020-12-31
Value2728000.0
Percentage of ContractualObligationDueInNextTwelveMonths100.0

us-gaap:ContractualObligationDueInSecondAndThirdYear

us-gaap:ContractualObligationDueInSecondAndThirdYear


Contractual
Period End2020-12-31
Value4374000.0
Percentage of ContractualObligationDueInSecondAndThirdYear100.0

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4.8815.4656.0426.6327.2227.8068.398.989.57101011
Percentage of DebtIssuanceCostsLineOfCreditArrangementsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsGross us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DeferredFinanceCostsGross

mgy:A6.0SeniorNotesDue2026, us-gaap:SeniorNotes


Deferred
Period End2021-04-052021-03-312020-12-312020-09-302018-07-31
Value5.011111111
Percentage of DeferredFinanceCostsGross100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredFinanceCostsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-06-302017-12-31
Value138.5528.8859.2139.5369.853100.82640.0
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards


Deferred
Period End2020-12-31
Value1727000.0
Percentage of DeferredTaxAssetsCapitalLossCarryforwards100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-31
Value2014.45914
Percentage of DeferredTaxAssetsGross100.0100.0100.0

us-gaap:DeferredTaxAssetsInvestments

us-gaap:DeferredTaxAssetsInvestments


Deferred
Period End2020-12-31
Value162
Percentage of DeferredTaxAssetsInvestments100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-31
Value281.2747.336
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration

us-gaap:DomesticCountry


Deferred
Period End2020-12-31
Value135
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration100.0

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment


Deferred
Period End2020-12-31
Value6224000.0
Percentage of DeferredTaxAssetsPropertyPlantAndEquipment100.0

us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset

us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-03-312020-12-312020-09-30
Value114000.01098000.02181000.0
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset100.0100.0100.0

us-gaap:DerivativeAssets us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeAssets

us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2020-12-31
Value277000.0
Percentage of DerivativeAssets100.0

us-gaap:DerivativeAverageCapPrice us-gaap:Energy, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAverageCapPrice

srt:NaturalGasPerThousandCubicFeet, mgy:EnergyRelatedDerivativeMaturityCurrentFiscalYear


Derivative
Period End2020-09-30
Value3.0
Percentage of DerivativeAverageCapPrice100.0

us-gaap:DerivativeAverageFloorPrice us-gaap:Energy, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAverageFloorPrice

srt:NaturalGasPerThousandCubicFeet, mgy:EnergyRelatedDerivativeMaturityCurrentFiscalYear


Derivative
Period End2020-09-30
Value2.31
Percentage of DerivativeAverageFloorPrice100.0

us-gaap:DerivativeFairValueOfDerivativeAsset us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-03-312020-12-312020-09-30
Value114000.01375000.02181000.0
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeAsset us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-03-312020-12-312020-09-30
Value114000.01375000.02181000.0
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeLiability us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-06-302021-03-312020-12-312020-09-30
Value2.0430.3191.0984.389
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeLiability us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-06-302021-03-312020-12-312020-09-30
Value2.0430.3191.0984.389
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0

us-gaap:DerivativeLiabilities us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeLiabilities

us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-06-302021-03-312020-09-30
Value2.0430.2052.208
Percentage of DerivativeLiabilities100.0100.0100.0

us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset

us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-03-312020-12-312020-09-30
Value114000.01098000.02181000.0
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

mgy:PerformanceRestrictedStockUnitsPRSUs


Employee
Period End2021-06-302021-03-31
Value8.39.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions100.0100.0

us-gaap:PerformanceShares


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1.62.33.45.16.47.56.07.07.88.96.2
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions19.325.60.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9.69.99.51012131012131410
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions115.7110.00.00.00.00.00.00.00.00.00.0

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


Equity
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value212020191919191818
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value44373531272420
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value2054000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LongTermDebtFairValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtFairValue

us-gaap:FairValueInputsLevel1, us-gaap:CarryingReportedAmountFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value386391391390390390389389389388388388
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value412413407392383228412404410404387399
Percentage of LongTermDebtFairValue106.6105.6104.2100.398.258.4105.7103.7105.3103.999.6102.7

us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners us-gaap:ConsolidatedEntities, us-gaap:Ownership

us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners

us-gaap:VariableInterestEntityPrimaryBeneficiary, mgy:MagnoliaLLC


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value25.727.434.434.00.340.34
Percentage of MinorityInterestOwnershipPercentageByNoncontrollingOwners100.0100.0100.0100.0100.0100.0

us-gaap:OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization

us-gaap:OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization


Oil
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1071102798593989584470156341929317765
Percentage of OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OilAndGasPropertySuccessfulEffortMethodGross

us-gaap:OilAndGasPropertySuccessfulEffortMethodGross


Oil
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value223721702130210520732050381537413653346232503081
Percentage of OilAndGasPropertySuccessfulEffortMethodGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OilAndGasPropertySuccessfulEffortMethodNet

us-gaap:OilAndGasPropertySuccessfulEffortMethodNet


Oil
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value117111471149116911811209311631803235316830733016
Percentage of OilAndGasPropertySuccessfulEffortMethodNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value4.03.8
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OtherOilAndGasPropertySuccessfulEffortMethod

us-gaap:OtherOilAndGasPropertySuccessfulEffortMethod


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value5120000.04853000.04412000.04063000.03547000.03391000.03087000.0360000.0
Percentage of OtherOilAndGasPropertySuccessfulEffortMethod100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherSundryLiabilitiesCurrent

us-gaap:OtherSundryLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3714202223363542
Percentage of OtherSundryLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PurchaseObligation

us-gaap:PurchaseObligation


Purchase
Period End2020-12-31
Value2198000.0
Percentage of PurchaseObligation100.0

us-gaap:PurchaseObligationDueInFourthAndFifthYear

us-gaap:PurchaseObligationDueInFourthAndFifthYear


Purchase
Period End2020-12-31
Value384000.0
Percentage of PurchaseObligationDueInFourthAndFifthYear100.0

us-gaap:PurchaseObligationDueInNextTwelveMonths

us-gaap:PurchaseObligationDueInNextTwelveMonths


Purchase
Period End2020-12-31
Value674000.0
Percentage of PurchaseObligationDueInNextTwelveMonths100.0

us-gaap:PurchaseObligationDueInSecondAndThirdYear

us-gaap:PurchaseObligationDueInSecondAndThirdYear


Purchase
Period End2020-12-31
Value1140000.0
Percentage of PurchaseObligationDueInSecondAndThirdYear100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

mgy:PerformanceRestrictedStockUnitsPRSUs


Share
Period End2021-06-302021-03-31
Value9.369.33
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value11.0611.110.9511.2211.2811.3114.3114.3114.3214.3214.58
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue118.2119.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9.08.468.519.6510.0210.612.9713.0613.3413.4613.97
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue96.290.70.00.00.00.00.00.00.00.00.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:TaxCreditCarryforward

us-gaap:TaxCreditCarryforwardAmount

us-gaap:CapitalLossCarryforward


Tax
Period End2020-12-31
Value8200000.0
Percentage of TaxCreditCarryforwardAmount100.0

us-gaap:TreasuryStockCommonShares

us-gaap:TreasuryStockCommonShares


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value9473000.07448000.05475000.03100000.02000000.02000000.01000000.0
Percentage of TreasuryStockCommonShares100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockCommonValue

us-gaap:TreasuryStockCommonValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value835938231616109.7220.0
Percentage of TreasuryStockCommonValue100.0100.0100.0100.0100.0100.0100.0100.00.0

Line plots across dimensions of each concept


us-gaap:CommonStockValue
us-gaap:StatementClassOfStock
(None,)
Common Stock Valueus-gaap: Statement Class Of Stock
us-gaap:SharesOutstanding
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
(None, 'us-gaap:CommonStock')
Shares Outstandingus-gaap: Statement Class Of Stock, us-gaap: Statement Equity Components
us-gaap:SharesIssued
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
(None, 'us-gaap:CommonStock')
Shares Issuedus-gaap: Statement Class Of Stock, us-gaap: Statement Equity Components
us-gaap:CommonStockSharesIssued
us-gaap:StatementClassOfStock
(None,)
Common Stock Shares Issuedus-gaap: Statement Class Of Stock
us-gaap:CommonStockSharesOutstanding
us-gaap:StatementClassOfStock
(None,)
Common Stock Shares Outstandingus-gaap: Statement Class Of Stock
us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
(None,)
Profit Lossus-gaap: Statement Equity Components
us-gaap:Revenues
us-gaap:ProductOrService
(None,)
Revenuesus-gaap: Product Or Service
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
(None, 'us-gaap:CommonStock')
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Class Of Stock, us-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:CommonStockValue
us-gaap:StatementClassOfStock
(None,)
Common Stock Valueus-gaap: Statement Class Of Stock
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents
(None,)
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Valueus-gaap: Statement Equity Components
us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
(None,)
Profit Lossus-gaap: Statement Equity Components
us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:StatementClassOfStock
(None,)
Payments For Repurchase Of Common Stockus-gaap: Statement Class Of Stock