$MGY
Magnolia Oil & Gas Corp Stock $mgy

$mgy Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000169899022000007 Filed on February 17, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$336.4M	$1.078B	$149.2M
YoY Change	125.46%	99.21%	-35.05%
Cost Of Revenue	$45.76M	$138.6M	$26.00M
YoY Change	76.0%	28.53%	-18.5%
Gross Profit	$290.6M	$939.8M	$123.3M
YoY Change	135.7%	120.25%	-37.66%
Gross Profit Margin	86.4%	87.15%	82.64%
Selling, General & Admin	$35.54M	$124.7M	$26.80M
YoY Change	32.61%	24.46%	-9.76%
% of Gross Profit	12.23%	13.27%	21.74%
Research & Development	$1.685M	$4.125M	$3.700M
YoY Change	-54.46%	-99.27%	37.04%
% of Gross Profit	0.58%	0.44%	3.0%
Depreciation & Amortization	$53.42M	$187.7M	$48.70M
YoY Change	9.69%	-33.76%	-65.53%
% of Gross Profit	18.38%	19.97%	39.5%
Operating Expenses	$91.51M	$330.8M	$80.60M
YoY Change	13.53%	-65.94%	-53.97%
Operating Profit	$199.1M	$602.6M	$42.70M
YoY Change	366.31%	-131.29%	88.11%
Interest Expense	-$7.483M	-$33.01M	-$4.500M
YoY Change	66.29%	26.97%	-30.77%
% of Operating Profit	-3.76%	-5.48%	-10.54%
Other Income/Expense, Net	$37.00K	-$34.03M	$3.900M
YoY Change	-99.05%	50.18%	-2050.0%
Pretax Income	$194.6M	$568.6M	$42.00M
YoY Change	363.26%	-129.18%	164.15%
Income Tax	$2.423M	$8.851M	$0.00
% Of Pretax Income	1.25%	1.56%	0.0%
Net Earnings	$150.2M	$417.3M	$27.70M
YoY Change	442.34%	-134.53%	241.98%
Net Earnings / Revenue	44.66%	38.7%	18.57%
Basic Earnings Per Share
Diluted Earnings Per Share	$827.3K	$2.380M	$168.0K
COMMON SHARES
Basic Shares Outstanding		174.4M shares
Diluted Shares Outstanding		175.4M shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$367.0M	$367.0M	$192.6M
YoY Change	90.54%	90.54%	5.48%
Cash & Equivalents	$367.0M	$367.0M	$192.6M
Short-Term Investments
Other Short-Term Assets	$552.0K	$2.042M	$3.601M
YoY Change	-84.67%	-72.41%	-20.17%
Inventory
Prepaid Expenses
Receivables	$149.8M	$149.8M	$81.56M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$517.9M	$518.8M	$281.5M
YoY Change	83.97%	84.3%	-3.99%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.216B	$1.216B	$1.150B
YoY Change	5.79%	5.79%	-63.12%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments			$0.00
YoY Change			-100.0%
Other Assets	$9.036M	$11.86M	$6.979M
YoY Change	29.47%	-8.75%	56.48%
Total Long-Term Assets	$1.229B	$1.228B	$1.172B
YoY Change	4.86%	4.78%	-63.07%
TOTAL ASSETS
Total Short-Term Assets	$517.9M	$518.8M	$281.5M
Total Long-Term Assets	$1.229B	$1.228B	$1.172B
Total Assets	$1.747B	$1.747B	$1.453B
YoY Change	20.18%	20.18%	-58.07%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$127.9M	$127.9M	$62.63M
YoY Change	104.24%	104.33%	-21.15%
Accrued Expenses	$29.94M	$29.94M	$37.60M
YoY Change	-20.38%	-20.38%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$218.5M	$218.5M	$128.9M
YoY Change	69.48%	69.55%	-26.4%
LONG-TERM LIABILITIES
Long-Term Debt	$388.1M	$388.1M	$391.1M
YoY Change	-0.77%	-0.77%	0.33%
Other Long-Term Liabilities	$5.146M	$94.86M	$5.702M
YoY Change	-9.75%	1.02%	286.31%
Total Long-Term Liabilities	$482.9M	$482.9M	$485.0M
YoY Change	-0.43%	-0.42%	-13.79%
TOTAL LIABILITIES
Total Short-Term Liabilities	$218.5M	$218.5M	$128.9M
Total Long-Term Liabilities	$482.9M	$482.9M	$485.0M
Total Liabilities	$701.5M	$930.0M	$614.0M
YoY Change	14.25%	2.73%	-16.79%
SHAREHOLDERS EQUITY
Retained Earnings	-$708.2M		-$1.125B
YoY Change	-37.08%		-1456.94%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$816.8M	$816.8M	$548.2M
YoY Change
Total Liabilities & Shareholders Equity	$1.747B	$1.747B	$1.453B
YoY Change	20.18%	20.18%	-58.07%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$150.2M	$417.3M	$27.70M
YoY Change	442.34%	-134.53%	241.98%
Depreciation, Depletion And Amortization	$53.42M	$187.7M	$48.70M
YoY Change	9.69%	-33.76%	-65.53%
Cash From Operating Activities	$260.5M	$788.5M	$79.10M
YoY Change	229.38%	154.25%	-50.25%
INVESTING ACTIVITIES
Capital Expenditures	-$73.68M	-$236.4M	-$40.60M
YoY Change	81.48%	19.47%	-42.08%
Acquisitions		$0.00
YoY Change
Other Investing Activities	-$6.318M	$2.239M	$21.40M
YoY Change	-129.52%	95.03%
Cash From Investing Activities	-$80.00M	-$243.4M	-$19.20M
YoY Change	316.67%	-9.83%	-72.61%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-58.58M	-$370.6M	-15.90M
YoY Change	268.45%	1127.0%	-77.51%
NET CHANGE
Cash From Operating Activities	260.5M	$788.5M	79.10M
Cash From Investing Activities	-80.00M	-$243.4M	-19.20M
Cash From Financing Activities	-58.58M	-$370.6M	-15.90M
Net Change In Cash	122.0M	$174.4M	44.00M
YoY Change	177.18%	1656.86%	141.76%
FREE CASH FLOW
Cash From Operating Activities	$260.5M	$788.5M	$79.10M
Capital Expenditures	-$73.68M	-$236.4M	-$40.60M
Free Cash Flow	$334.2M	$1.025B	$119.7M
YoY Change	179.22%	101.74%	-47.75%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001698990
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
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CY2020Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssetsNoncurrent
CY2021Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesCurrent
CY2020Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesCurrent
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesNoncurrent
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesNoncurrent
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-38083
CY2021	dei	Entity Registrant Name EntityRegistrantName	Magnolia Oil & Gas Corp
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	81-5365682
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	Nine Greenway Plaza, Suite 1300
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	77046
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Houston,
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
CY2021	dei	City Area Code CityAreaCode	713
CY2021	dei	Local Phone Number LocalPhoneNumber	842-9050
CY2021	dei	Security12b Title Security12bTitle	Class A Common Stock, par value $0.0001
CY2021	dei	Trading Symbol TradingSymbol	MGY
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	2200000000	USD
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CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	149769000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	81559000	USD
CY2021Q4	mgy	Drilling Advances DrillingAdvances	615000	USD
CY2020Q4	mgy	Drilling Advances DrillingAdvances	3805000	USD
CY2021Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1427000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	3601000	USD
CY2021Q4	mgy	Assets Noncurrent Excluding Oil And Gas Property Successful Effort Method Net AssetsNoncurrentExcludingOilAndGasPropertySuccessfulEffortMethodNet	11862000	USD
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CY2019	mgy	Classof Warrantor Right Noncash Deemed Dividend ClassofWarrantorRightNoncashDeemedDividend	2763000	USD
CY2021	mgy	Net Income Loss Attributable To Common Stockholders NetIncomeLossAttributableToCommonStockholders	417282000	USD
CY2020	mgy	Net Income Loss Attributable To Common Stockholders NetIncomeLossAttributableToCommonStockholders	-1208390000	USD
CY2019	mgy	Net Income Loss Attributable To Common Stockholders NetIncomeLossAttributableToCommonStockholders	47433000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	174364000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	166270000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	161886000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175360000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	166270000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	167047000	shares
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2707955000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11089000	USD
CY2019	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	-8980000	USD
CY2019	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	33693000	USD
CY2019	mgy	Shares Redeemed During Period Business Acquisition Value SharesRedeemedDuringPeriodBusinessAcquisitionValue	25245000	USD
CY2019	mgy	Stock Issued During Period Value Warrants Exchange StockIssuedDuringPeriodValueWarrantsExchange	-2232000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	771000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	10277000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	69093000	USD
CY2019	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	8809000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	1424000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	85005000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2728529000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10029000	USD
CY2020	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	0	USD
CY2020	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	792000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	28681000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	680000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-1868983000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	839422000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	839422000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11736000	USD
CY2021	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	0	USD
CY2021	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4802000	USD
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	125641000	USD
CY2021	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	171671000	USD
CY2021	mgy	Adjustments To Additional Paid In Capital Noncompete Settlement AdjustmentsToAdditionalPaidInCapitalNoncompeteSettlement	-42073000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	14231000	USD
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	7207000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	559716000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1045249000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	559716000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-1868983000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	85005000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	187688000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	283353000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	523572000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	9346000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14505000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14505000	USD
CY2021	mgy	Noncash Exploration Expense NoncashExplorationExpense	888000	USD
CY2020	mgy	Noncash Exploration Expense NoncashExplorationExpense	563999000	USD
CY2019	mgy	Noncash Exploration Expense NoncashExplorationExpense	1154000	USD
CY2021	mgy	Impairment Of Proved Oil And Gas Properties ImpairmentOfProvedOilAndGasProperties	0	USD
CY2020	mgy	Impairment Of Proved Oil And Gas Properties ImpairmentOfProvedOilAndGasProperties	1381258000	USD
CY2019	mgy	Impairment Of Proved Oil And Gas Properties ImpairmentOfProvedOilAndGasProperties	0	USD
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	4929000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	5718000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	5512000	USD
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4290000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3628000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3541000	USD
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-277000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	277000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	USD
CY2021	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2020	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	5071000	USD
CY2019	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	0	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-77834000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	14261000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	11736000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	10029000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	11089000	USD
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	84000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	728000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	668000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	68210000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-24216000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-7952000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	65283000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-16961000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-6834000	USD
CY2021	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	7765000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-2457000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-19181000	USD
CY2021	mgy	Increase Decreasein Drilling Advances IncreaseDecreaseinDrillingAdvances	-3190000	USD
CY2020	mgy	Increase Decreasein Drilling Advances IncreaseDecreaseinDrillingAdvances	3506000	USD
CY2019	mgy	Increase Decreasein Drilling Advances IncreaseDecreaseinDrillingAdvances	-11960000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-1663000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	768000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	4249000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	788477000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	310121000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	647619000	USD
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-4250000	USD
CY2021	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	18345000	USD
CY2020	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	73702000	USD
CY2019	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	93221000	USD
CY2021	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2020	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	27074000	USD
CY2019	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2021	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	236426000	USD
CY2020	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	197858000	USD
CY2019	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	425124000	USD
CY2021	mgy	Payments To Acquire Oil And Gas Property And Equipment Changes In Working Capital PaymentsToAcquireOilAndGasPropertyAndEquipmentChangesInWorkingCapital	-13568000	USD
CY2020	mgy	Payments To Acquire Oil And Gas Property And Equipment Changes In Working Capital PaymentsToAcquireOilAndGasPropertyAndEquipmentChangesInWorkingCapital	24354000	USD
CY2019	mgy	Payments To Acquire Oil And Gas Property And Equipment Changes In Working Capital PaymentsToAcquireOilAndGasPropertyAndEquipmentChangesInWorkingCapital	9911000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2239000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1148000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	242000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-243442000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-269988000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-524248000	USD
CY2021	mgy	Payments For Compliance Of Non Compete Agreement PaymentsForComplianceOfNonCompeteAgreement	42073000	USD
CY2020	mgy	Payments For Compliance Of Non Compete Agreement PaymentsForComplianceOfNonCompeteAgreement	0	USD
CY2019	mgy	Payments For Compliance Of Non Compete Agreement PaymentsForComplianceOfNonCompeteAgreement	0	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	14131000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	USD
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	7301000	USD
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	7207000	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	680000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	1424000	USD
CY2021	us-gaap	Payments Of Debt Restructuring Costs PaymentsOfDebtRestructuringCosts	4976000	USD
CY2020	us-gaap	Payments Of Debt Restructuring Costs PaymentsOfDebtRestructuringCosts	0	USD
CY2019	us-gaap	Payments Of Debt Restructuring Costs PaymentsOfDebtRestructuringCosts	0	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-4915000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-844000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-3003000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-370614000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-30205000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-76496000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	174421000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	9928000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	46875000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	192561000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	182633000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	135758000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	366982000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	192561000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	182633000	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Use of Estimates </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates, and changes in these estimates are recorded when known. Significant estimates with regard to these financial statements include the fair value determination of acquired assets and liabilities, the assessment of asset retirement obligations, the estimate of proved oil and natural gas reserves and related present value estimates of future net cash flows, and the estimates of fair value for long-lived assets.</span></div>
CY2021Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	367000000	USD
CY2020Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	192600000	USD
CY2021	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2021	mgy	Revenue From Contract With Customers General Required Payment Period RevenueFromContractWithCustomersGeneralRequiredPaymentPeriod	P30D
CY2021Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	125100000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	72000000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0	USD
CY2021	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-2833000	USD
CY2020	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	288000	USD
CY2019	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	0	USD
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-277000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	277000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	USD
CY2021	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-3110000	USD
CY2020	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	565000	USD
CY2019	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	0	USD
CY2020Q1	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	1900000000	USD
CY2020	mgy	Impairment Of Proved Oil And Gas Properties ImpairmentOfProvedOilAndGasProperties	1400000000	USD
CY2020	mgy	Impairment Of Unproved Oil And Gas Properties ImpairmentOfUnprovedOilAndGasProperties	600000000	USD
CY2021	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	44400000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	35054000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	0	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	9346000	USD
CY2021	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P2Y8M12D
CY2020	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P3Y3M
CY2021Q4	mgy	Accrued Capital Expenditures Current AccruedCapitalExpendituresCurrent	29936000	USD
CY2020Q4	mgy	Accrued Capital Expenditures Current AccruedCapitalExpendituresCurrent	16368000	USD
CY2021Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	60700000	USD
CY2020Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	49955000	USD
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	90636000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	66323000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	88404000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	95542000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	85983000	USD
CY2021	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-7128000	USD
CY2020	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-14883000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	69000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	1457000	USD
CY2021	mgy	Asset Retirement Obligation Liabilities Incurredand Assumed Through Business Combination AssetRetirementObligationLiabilitiesIncurredandAssumedThroughBusinessCombination	5293000	USD
CY2020	mgy	Asset Retirement Obligation Liabilities Incurredand Assumed Through Business Combination AssetRetirementObligationLiabilitiesIncurredandAssumedThroughBusinessCombination	3484000	USD
CY2019	mgy	Asset Retirement Obligation Liabilities Incurredand Assumed Through Business Combination AssetRetirementObligationLiabilitiesIncurredandAssumedThroughBusinessCombination	7082000	USD
CY2021	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	848000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	3104000	USD
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	4929000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	5718000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	5512000	USD
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	90650000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	88404000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	95542000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	7504000	USD
CY2021Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	400000000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	400000000	USD
CY2021Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	11913000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	8885000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	388087000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	391115000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Remaining Lease Term LesseeOperatingLeaseRemainingLeaseTerm	P6Y
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	7737000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	6470000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	4031000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1801000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	5146000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	5703000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	9177000	USD
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CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y2M12D
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CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	3700000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	3400000	USD
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CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	22800000	USD
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CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	3000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	4266000	USD
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CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	17000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	9651000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	474000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	9177000	USD
CY2021Q4	us-gaap	Litigation Reserve LitigationReserve	0	USD
CY2020Q4	us-gaap	Litigation Reserve LitigationReserve	0	USD
CY2021Q4	us-gaap	Purchase Obligation PurchaseObligation	3059000	USD
CY2021Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	1196000	USD
CY2021Q4	us-gaap	Purchase Obligation Due In Second And Third Year PurchaseObligationDueInSecondAndThirdYear	1863000	USD
CY2021Q4	us-gaap	Purchase Obligation Due In Fourth And Fifth Year PurchaseObligationDueInFourthAndFifthYear	0	USD
CY2021Q4	us-gaap	Purchase Obligation Due After Fifth Year PurchaseObligationDueAfterFifthYear	0	USD
CY2021Q4	mgy	Lessee Operating Lease Liability And Operating Lease Not Yet Commenced LesseeOperatingLeaseLiabilityAndOperatingLeaseNotYetCommenced	9651000	USD
CY2021Q4	mgy	Lessee Operating Lease Liabilityand Operating Lease Not Yet Commenced Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueNextTwelveMonths	4266000	USD
CY2021Q4	mgy	Lessee Operating Lease Liabilityand Operating Lease Not Yet Commenced Payments Duein Secondand Third Year LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueinSecondandThirdYear	3650000	USD
CY2021Q4	mgy	Lessee Operating Lease Liabilityand Operating Lease Not Yet Commenced Payments Duein Fourthand Fifth Year LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueinFourthandFifthYear	1718000	USD
CY2021Q4	mgy	Lessee Operating Lease Liabilityand Operating Lease Not Yet Commenced Payments Dueafter Fifth Year LesseeOperatingLeaseLiabilityandOperatingLeaseNotYetCommencedPaymentsDueafterFifthYear	17000	USD
CY2021Q4	us-gaap	Contractual Obligation ContractualObligation	12710000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	5462000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Second And Third Year ContractualObligationDueInSecondAndThirdYear	5513000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Fourth And Fifth Year ContractualObligationDueInFourthAndFifthYear	1718000	USD
CY2021Q4	us-gaap	Contractual Obligation Due After Fifth Year ContractualObligationDueAfterFifthYear	17000	USD
CY2021	mgy	Contractual Obligation Costs Incurred ContractualObligationCostsIncurred	1400000	USD
CY2020	mgy	Contractual Obligation Costs Incurred ContractualObligationCostsIncurred	1200000	USD
CY2019	mgy	Contractual Obligation Costs Incurred ContractualObligationCostsIncurred	1500000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	5452000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-1167000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3399000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14760000	USD
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.016
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.041
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CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8851000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-1506000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	499000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-71792000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	13817000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-6042000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	444000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-77834000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	14261000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8851000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-79340000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.148
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	7000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	119392000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-409148000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	20966000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2763000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-12759000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	847000	USD
CY2021	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	30615000	USD
CY2020	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	-141027000	USD
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	7309000	USD
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-82696000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	201786000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-246000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	256000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8851000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-79340000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14760000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	161910000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	162437000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	11855000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	28461000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	1522000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	1727000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	6337000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	6224000	USD
CY2021Q4	mgy	Deferred Tax Assets Capitalized Transaction Costs DeferredTaxAssetsCapitalizedTransactionCosts	2690000	USD
CY2020Q4	mgy	Deferred Tax Assets Capitalized Transaction Costs DeferredTaxAssetsCapitalizedTransactionCosts	2937000	USD
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CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	201786000	USD
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CY2019Q3	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	31700000	shares
	mgy	Classof Warrantor Right Noncash Deemed Dividend ClassofWarrantorRightNoncashDeemedDividend	2800000	USD
	mgy	Adjustmentsto Additional Paidin Capital Offering Expenses Incurredin Connectionwith Warrants Exchange AdjustmentstoAdditionalPaidinCapitalOfferingExpensesIncurredinConnectionwithWarrantsExchange	2200000	USD
CY2021Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	14200000	USD
CY2021Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2021Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	14200000	USD
CY2021Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	14200000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11700000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11100000	USD
CY2021	mgy	Net Income Loss Attributable To Common Stockholders NetIncomeLossAttributableToCommonStockholders	417282000	USD
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CY2019	mgy	Net Income Loss Attributable To Common Stockholders NetIncomeLossAttributableToCommonStockholders	47433000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	2789000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	414493000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-1208390000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	47433000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	174364000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	166270000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	161886000	shares
CY2021	mgy	Net Income Loss Attributable To Common Stockholders NetIncomeLossAttributableToCommonStockholders	417282000	USD
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CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	2775000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	414507000	USD
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CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	47433000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	174364000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	166270000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	161886000	shares
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	996000	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	5161000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175360000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	166270000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	167047000	shares
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	40722000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3157000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-724000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	390000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	26933000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	25895000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	26226000	USD
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	29936000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	16368000	USD
CY2021	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	0	USD
CY2020	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	0	USD
CY2019	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	33693000	USD
CY2021	mgy	Classof Warrantor Right Noncash Deemed Dividend ClassofWarrantorRightNoncashDeemedDividend	0	USD
CY2020	mgy	Classof Warrantor Right Noncash Deemed Dividend ClassofWarrantorRightNoncashDeemedDividend	0	USD
CY2019	mgy	Classof Warrantor Right Noncash Deemed Dividend ClassofWarrantorRightNoncashDeemedDividend	2763000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	4668000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	5923000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	6720000	USD
CY2021	dei	Auditor Name AuditorName	KPMG LLP
CY2021	dei	Auditor Location AuditorLocation	Houston, TX
CY2021	dei	Auditor Firm AuditorFirmId	185

Files In Submission

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$MGY
Magnolia Oil & Gas Corp Stock $mgy

2021 Q4 Form 10-K Financial Statement

#000169899022000007 Filed on February 17, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MGY Magnolia Oil & Gas Corp Stock $mgy

2021 Q4 Form 10-K Financial Statement

#000169899022000007 Filed on February 17, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MGY
Magnolia Oil & Gas Corp Stock $mgy