$GPOR
GULFPORT ENERGY CORP Stock $gpor

$gpor Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-Q Financial Statement

#000162828021021460 Filed on November 03, 2021

Income Statement

Concept	2021 Q4	2021 Q3	2020 Q3
Revenue	$772.6M	-$242.5M	$136.2M
YoY Change	215.69%	-278.1%	-60.15%
Cost Of Revenue	$27.54M	$84.44M	$110.6M
YoY Change	17.84%	-23.63%	-18.1%
Gross Profit	$745.0M	-$327.0M	$25.61M
YoY Change	236.57%	-1376.75%	-87.61%
Gross Profit Margin	96.44%		18.81%
Selling, General & Admin	$97.46M	$101.1M	$131.1M
YoY Change	-27.44%	-22.86%	-11.55%
% of Gross Profit	13.08%		511.89%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$65.98M	$62.57M	$51.55M
YoY Change	45.41%	21.38%	-68.43%
% of Gross Profit	8.86%		201.3%
Operating Expenses	$163.9M	$164.2M	$183.4M
YoY Change	-9.17%	-10.48%	-39.67%
Operating Profit	$581.1M	-$435.3M	-$346.4M
YoY Change	2859.95%	25.66%	-39.33%
Interest Expense	-$15.61M	$16.35M	$34.32M
YoY Change	-23.26%	-52.36%	-3.47%
% of Operating Profit	-2.69%
Other Income/Expense, Net	-$5.072M	-$25.38M	-$34.56M
YoY Change	-59.42%	-26.56%	-40.3%
Pretax Income	$557.4M	-$460.7M	-$381.0M
YoY Change	-436.65%	20.92%	-39.42%
Income Tax	-$689.0K	$650.0K	$0.00
% Of Pretax Income	-0.12%
Net Earnings	$558.1M	-$461.3M	-$381.0M
YoY Change	-437.07%	21.09%	-21.42%
Net Earnings / Revenue	72.24%		-279.76%
Basic Earnings Per Share		-$22.50	-$2.37
Diluted Earnings Per Share	$27.01M	-$22.50	-$2.37
COMMON SHARES
Basic Shares Outstanding	20.59M shares	20.60M shares	160.7M shares
Diluted Shares Outstanding		20.60M shares	160.7M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2020 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.260M	$4.485M	$51.04M
YoY Change	-96.37%	-91.21%	404.18%
Cash & Equivalents	$3.260M	$4.485M	$51.04M
Short-Term Investments
Other Short-Term Assets	$17.05M	$20.63M	$57.43M
YoY Change	-90.92%	-64.08%	-59.04%
Inventory
Prepaid Expenses
Receivables	$232.9M	$185.9M	$92.44M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$273.6M	$220.7M	$216.3M
YoY Change	-33.24%	2.03%	-28.91%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.856B	$1.841B	$2.103B
YoY Change	-11.05%	-12.44%	-62.35%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$0.00	$0.00	$16.56M
YoY Change	-100.0%	-100.0%	-77.61%
Other Assets	$19.87M	$25.50M	$37.03M
YoY Change	8.14%	-31.14%	217.76%
Total Long-Term Assets	$1.895B	$1.867B	$2.159B
YoY Change	-11.05%	-13.51%	-63.82%
TOTAL ASSETS
Total Short-Term Assets	$273.6M	$220.7M	$216.3M
Total Long-Term Assets	$1.895B	$1.867B	$2.159B
Total Assets	$2.168B	$2.088B	$2.376B
YoY Change	-14.63%	-12.1%	-62.13%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$394.0M	$436.2M	$295.4M
YoY Change	60.89%	47.68%	-32.72%
Accrued Expenses	$182.0K	$34.00K	$1.757M
YoY Change		-98.06%	-94.81%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$60.00M	$656.0K
YoY Change	-100.0%	9046.34%	5.47%
Total Short-Term Liabilities	$634.9M	$1.057B	$321.9M
YoY Change	24.43%	228.3%	-32.07%
LONG-TERM LIABILITIES
Long-Term Debt	$712.9M	$689.5M	$2.068B
YoY Change		-66.66%	-0.41%
Other Long-Term Liabilities	$213.0M	$292.8M	$127.0M
YoY Change	-90.86%	130.56%	-20.81%
Total Long-Term Liabilities	$925.9M	$982.3M	$2.068B
YoY Change	2429.59%	-52.5%	-0.41%
TOTAL LIABILITIES
Total Short-Term Liabilities	$634.9M	$1.057B	$321.9M
Total Long-Term Liabilities	$925.9M	$982.3M	$2.068B
Total Liabilities	$1.561B	$2.039B	$2.520B
YoY Change	-45.05%	-19.09%	-7.14%
SHAREHOLDERS EQUITY
Retained Earnings	-$112.8M	-$670.9M	-$4.307B
YoY Change	-97.48%	-84.42%	621.58%
Common Stock	$2.000K	$2.000K	$1.607M
YoY Change	-99.88%	-99.88%	0.63%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$0.00	$30.22M
YoY Change
Treasury Stock Shares	0.000 shares	938.0K shares
Shareholders Equity	$549.5M	-$8.931M	-$144.8M
YoY Change
Total Liabilities & Shareholders Equity	$2.168B	$2.088B	$2.376B
YoY Change	-14.63%	-12.1%	-62.13%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2020 Q3
OPERATING ACTIVITIES
Net Income	$558.1M	-$461.3M	-$381.0M
YoY Change	-437.07%	21.09%	-21.42%
Depreciation, Depletion And Amortization	$65.98M	$62.57M	$51.55M
YoY Change	45.41%	21.38%	-68.43%
Cash From Operating Activities	$128.3M	$126.3M	-$47.22M
YoY Change	-222.59%	-367.41%	-121.7%
INVESTING ACTIVITIES
Capital Expenditures	-$87.81M	-$78.88M	-$63.14M
YoY Change	205.77%	24.92%	-54.45%
Acquisitions
YoY Change
Other Investing Activities	$3.846M	$3.014M	$2.538M
YoY Change	-20.31%	18.75%	-75.1%
Cash From Investing Activities	-$83.96M	-$75.87M	-$60.61M
YoY Change	251.43%	25.18%	-52.81%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-45.61M	-84.44M	156.1M
YoY Change	-127.25%	-154.11%	-256.34%
NET CHANGE
Cash From Operating Activities	128.3M	126.3M	-47.22M
Cash From Investing Activities	-83.96M	-75.87M	-60.61M
Cash From Financing Activities	-45.61M	-84.44M	156.1M
Net Change In Cash	-1.225M	-34.04M	48.23M
YoY Change	-103.16%	-170.58%	-552.7%
FREE CASH FLOW
Cash From Operating Activities	$128.3M	$126.3M	-$47.22M
Capital Expenditures	-$87.81M	-$78.88M	-$63.14M
Free Cash Flow	$216.2M	$205.2M	$15.92M
YoY Change	-384.49%	1188.41%	-95.53%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	27468000	USD
CY2020Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	25730000	USD
	dei	Amendment Flag AmendmentFlag	false
	dei	Entity Central Index Key EntityCentralIndexKey	0000874499
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-19514
	dei	Entity Registrant Name EntityRegistrantName	Gulfport Energy Corp
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	86-3684669
	dei	Entity Address Address Line1 EntityAddressAddressLine1	3001 Quail Springs Parkway
	dei	Entity Address City Or Town EntityAddressCityOrTown	Oklahoma City,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	OK
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	73134
	dei	City Area Code CityAreaCode	405
	dei	Local Phone Number LocalPhoneNumber	252-4600
	dei	Security12b Title Security12bTitle	Common Stock, $0.0001 par value per share
	dei	Trading Symbol TradingSymbol	GPOR
	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021Q3	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	961000	USD
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2021Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	20585964	shares
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4485000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	89861000	USD
CY2021Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	185941000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	119879000	USD
CY2021Q3	us-gaap	Oil And Gas Joint Interest Billing Receivables Current OilAndGasJointInterestBillingReceivablesCurrent	9669000	USD
CY2020Q4	us-gaap	Oil And Gas Joint Interest Billing Receivables Current OilAndGasJointInterestBillingReceivablesCurrent	12200000	USD
CY2021Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	18487000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	160664000	USD
CY2021Q3	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	2142000	USD
CY2020Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	27146000	USD
CY2021Q3	us-gaap	Assets Current AssetsCurrent	220724000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	409750000	USD
CY2021Q3	gpor	Proved Oil And Gas Property Full Cost Method Gross ProvedOilAndGasPropertyFullCostMethodGross	1831762000	USD
CY2020Q4	gpor	Proved Oil And Gas Property Full Cost Method Gross ProvedOilAndGasPropertyFullCostMethodGross	9359866000	USD
CY2021Q3	gpor	Unproved Oil And Gas Property Full Cost Method Gross UnprovedOilAndGasPropertyFullCostMethodGross	216357000	USD
CY2020Q4	gpor	Unproved Oil And Gas Property Full Cost Method Gross UnprovedOilAndGasPropertyFullCostMethodGross	1457043000	USD
CY2021Q3	gpor	Property Plantand Equipment Other Than Oil And Gas Property Gross PropertyPlantandEquipmentOtherThanOilAndGasPropertyGross	5277000	USD
CY2020Q4	gpor	Property Plantand Equipment Other Than Oil And Gas Property Gross PropertyPlantandEquipmentOtherThanOilAndGasPropertyGross	88538000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2053396000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	10905447000	USD
CY2021Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	212403000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	8819178000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1840993000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2086269000	USD
CY2021Q3	us-gaap	Equity Method Investments EquityMethodInvestments	0	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	24816000	USD
CY2020Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	322000	USD
CY2021Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	34000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	342000	USD
CY2021Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	25496000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	18372000	USD
CY2021Q3	gpor	Total Other Assets TotalOtherAssets	26491000	USD
CY2020Q4	gpor	Total Other Assets TotalOtherAssets	43852000	USD
CY2021Q3	us-gaap	Assets Assets	2088208000	USD
CY2020Q4	us-gaap	Assets Assets	2539871000	USD
CY2021Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	436172000	USD
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	244903000	USD
CY2021Q3	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	560722000	USD
CY2020Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	11641000	USD
CY2021Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	34000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	0	USD
CY2021Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	60000000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	253743000	USD
CY2021Q3	us-gaap	Liabilities Current LiabilitiesCurrent	1056928000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	510287000	USD
CY2021Q3	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	272935000	USD
CY2020Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	36604000	USD
CY2021Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	19854000	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	0	USD
CY2021Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	689502000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	0	USD
CY2021Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	982291000	USD
CY2020Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	36604000	USD
CY2021Q3	us-gaap	Liabilities Subject To Compromise LiabilitiesSubjectToCompromise	0	USD
CY2020Q4	us-gaap	Liabilities Subject To Compromise LiabilitiesSubjectToCompromise	2293480000	USD
CY2021Q3	us-gaap	Liabilities Liabilities	2039219000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	2840371000	USD
CY2021Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2021Q3	us-gaap	Temporary Equity Par Or Stated Value Per Share TemporaryEquityParOrStatedValuePerShare	0.0001
CY2021Q3	us-gaap	Temporary Equity Shares Authorized TemporaryEquitySharesAuthorized	110000	shares
CY2021Q3	us-gaap	Temporary Equity Shares Issued TemporaryEquitySharesIssued	57900	shares
CY2021Q3	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	57900	shares
CY2021Q3	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	57920000	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	160800000	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	160800000	shares
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	1607000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-43000000	USD
CY2021Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2021Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	42000000	shares
CY2021Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	20600000	shares
CY2021Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	20600000	shares
CY2021Q3	us-gaap	Common Stock Value CommonStockValue	2000	USD
CY2021Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	692182000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	4213752000	USD
CY2021Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	938000	shares
CY2021Q3	us-gaap	Treasury Stock Value TreasuryStockValue	30216000	USD
CY2021Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-670899000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-4472859000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	-8931000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	-300500000	USD
CY2021Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2088208000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2539871000	USD
CY2021Q3	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-622476000	USD
CY2020Q3	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-53823000	USD
CY2021Q3	us-gaap	Revenues Revenues	-242528000	USD
CY2020Q3	us-gaap	Revenues Revenues	136176000	USD
CY2020Q3	us-gaap	Costs And Expenses CostsAndExpenses	482576000	USD
CY2021Q3	us-gaap	Costs And Expenses CostsAndExpenses	192753000	USD
CY2021Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-435281000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-346400000	USD
CY2021Q3	us-gaap	Interest Expense InterestExpense	16351000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	34321000	USD
CY2021Q3	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	0	USD
CY2020Q3	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-153000	USD
CY2021Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	13864000	USD
CY2020Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	13393000	USD
CY2021Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	11844000	USD
CY2020Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	6102000	USD
CY2021Q3	us-gaap	Cost Of Revenue CostOfRevenue	84435000	USD
CY2020Q3	us-gaap	Cost Of Revenue CostOfRevenue	110567000	USD
CY2021Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	62573000	USD
CY2020Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	51551000	USD
CY2021Q3	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2020Q3	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	270874000	USD
CY2021Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	16691000	USD
CY2020Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	20331000	USD
CY2021Q3	us-gaap	Restructuring Charges RestructuringCharges	2858000	USD
CY2020Q3	us-gaap	Restructuring Charges RestructuringCharges	8984000	USD
CY2021Q3	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	488000	USD
CY2020Q3	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	774000	USD
CY2021Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-9031000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-89000	USD
CY2021Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-25382000	USD
CY2020Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-34563000	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-460663000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-380963000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	650000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	-461313000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-380963000	USD
CY2021Q3	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	2095000	USD
CY2020Q3	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-463408000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-380963000	USD
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-22.50
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.37
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-22.50
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.37
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20598000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	160683000	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20598000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	160683000	shares
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-762134000	USD
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-137239000	USD
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	71414000	USD
	us-gaap	Revenues Revenues	-236804000	USD
	us-gaap	Revenues Revenues	273037000	USD
	us-gaap	Revenues Revenues	621815000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	17980000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	19524000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	41166000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	16900000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	12349000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	19039000	USD
	us-gaap	Cost Of Revenue CostOfRevenue	125811000	USD
	us-gaap	Cost Of Revenue CostOfRevenue	161086000	USD
	us-gaap	Cost Of Revenue CostOfRevenue	334789000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	94935000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	62764000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	194369000	USD
	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	117813000	USD
	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	1357099000	USD
	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	14568000	USD
	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	23209000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	19175000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	45719000	USD
	us-gaap	Restructuring Charges RestructuringCharges	2858000	USD
	us-gaap	Restructuring Charges RestructuringCharges	0	USD
	us-gaap	Restructuring Charges RestructuringCharges	9601000	USD
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	714000	USD
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1229000	USD
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	2270000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	400220000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	290695000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	2004052000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-637024000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-17658000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-1382237000	USD
	us-gaap	Interest Expense InterestExpense	25245000	USD
	us-gaap	Interest Expense InterestExpense	4159000	USD
	us-gaap	Interest Expense InterestExpense	99677000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	49579000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	0	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-342000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-10987000	USD
	us-gaap	Reorganization Items ReorganizationItems	0	USD
	us-gaap	Reorganization Items ReorganizationItems	-266898000	USD
	us-gaap	Reorganization Items ReorganizationItems	0	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-7979000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1711000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-8957000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-33224000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	260686000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-70042000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-670248000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	243028000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-1452279000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	650000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-7968000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7290000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-670898000	USD
	us-gaap	Net Income Loss NetIncomeLoss	250996000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-1459569000	USD
	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	3126000	USD
	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-674024000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	250996000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-1459569000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-32.87
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.56
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-9.12
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-32.87
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.56
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-9.12
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20507000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	160834000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	160053000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20507000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	160834000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	160053000	shares
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	-461313000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-380963000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	3661000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3661000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-461313000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-377302000	USD
CY2020Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	79000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-670898000	USD
	us-gaap	Net Income Loss NetIncomeLoss	250996000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-1459569000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	0	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	0	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-4497000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	0	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	0	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-4497000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-670898000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	250996000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-1464066000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1314592000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-517538000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-15030000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2104000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	784049000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-561068000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	6872000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1515000	USD
CY2020Q2	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	28000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	231340000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-380963000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3661000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1314000	USD
CY2020Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	129000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	-144777000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	-300500000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	8780000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2570000	USD
CY2021Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1419000	USD
CY2021Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	8000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	1000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	-287738000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	242214000	USD
CY2021Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5095000	USD
CY2021Q2	gpor	Accumulated Other Comprehensive Income Loss Extinguishment AccumulatedOtherComprehensiveIncomeLossExtinguishment	40430000	USD
CY2021Q2	gpor	Reorganization Value Cancellation Of Equity ReorganizationValueCancellationOfEquity	0	USD
CY2021Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	693775000	USD
CY2021Q2	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	54109000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	639667000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	639667000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	-209586000	USD
CY2021Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	23893000	USD
CY2021Q2	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	147000	USD
CY2021Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	1031000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	453090000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	-461313000	USD
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1387000	USD
CY2021Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	2095000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	-8931000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-670898000	USD
	us-gaap	Net Income Loss NetIncomeLoss	250996000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-1459569000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	94935000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	62764000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	194369000	USD
	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	117813000	USD
	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	1357099000	USD
	gpor	Impairment Of Other Properties And Equipment ImpairmentOfOtherPropertiesAndEquipment	0	USD
	gpor	Impairment Of Other Properties And Equipment ImpairmentOfOtherPropertiesAndEquipment	14568000	USD
	gpor	Impairment Of Other Properties And Equipment ImpairmentOfOtherPropertiesAndEquipment	0	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-342000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-10987000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	49579000	USD
	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-762134000	USD
	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-137239000	USD
	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	71414000	USD
	gpor	Cash Settlement On Derivative Instruments CashSettlementOnDerivativeInstruments	-99574000	USD
	gpor	Cash Settlement On Derivative Instruments CashSettlementOnDerivativeInstruments	-3361000	USD
	gpor	Cash Settlement On Derivative Instruments CashSettlementOnDerivativeInstruments	225364000	USD
	gpor	Non Cash Reorganization Items NonCashReorganizationItems	0	USD
	gpor	Non Cash Reorganization Items NonCashReorganizationItems	-446012000	USD
	gpor	Non Cash Reorganization Items NonCashReorganizationItems	0	USD
	gpor	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	0	USD
	gpor	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	0	USD
	gpor	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	7290000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	1487000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	1725000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	12753000	USD
	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	41260000	USD
	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	-153894000	USD
	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	27299000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	164637000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	172155000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	200001000	USD
	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	119306000	USD
	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	102330000	USD
	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	337979000	USD
	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	600000	USD
	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	15000	USD
	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	46932000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2562000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-4484000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-351000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-116144000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-97831000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-290696000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	1225000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	7100000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	633000	USD
	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	22827000	USD
	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	50000000	USD
	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-55000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-8000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-719000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-103425000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-104768000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	135678000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-54932000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-30444000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	44983000	USD
CY2021Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	59417000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	89861000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	6060000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4485000	USD
CY2021Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	59417000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	51043000	USD
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	Certain reclassifications have been made to prior period financial statements and related disclosures to conform to current period presentation. These reclassifications have no impact on previous reported total assets, total liabilities, net loss, total stockholders' deficit or total operating cash flows.
CY2021Q3	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	159080000	USD
CY2020Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	120275000	USD
CY2021Q3	gpor	Revenue Payable And Suspense Current RevenuePayableAndSuspenseCurrent	155454000	USD
CY2020Q4	gpor	Revenue Payable And Suspense Current RevenuePayableAndSuspenseCurrent	124628000	USD
CY2021Q3	gpor	Accrued Contract Damages And Treasury Shares Current AccruedContractDamagesAndTreasurySharesCurrent	121638000	USD
CY2020Q4	gpor	Accrued Contract Damages And Treasury Shares Current AccruedContractDamagesAndTreasurySharesCurrent	0	USD
CY2021Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	436172000	USD
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	244903000	USD
	gpor	Payments For Reorganization Items PaymentsForReorganizationItems	42202000	USD
	gpor	Payments For Reorganization Items PaymentsForReorganizationItems	87199000	USD
	gpor	Payments For Reorganization Items PaymentsForReorganizationItems	0	USD
	us-gaap	Interest Paid Net InterestPaidNet	6465000	USD
	us-gaap	Interest Paid Net InterestPaidNet	7272000	USD
	us-gaap	Interest Paid Net InterestPaidNet	73979000	USD
	gpor	Increase Decreasein Accounts Receivable Oiland Natural Gas IncreaseDecreaseinAccountsReceivableOilandNaturalGas	5230000	USD
	gpor	Increase Decreasein Accounts Receivable Oiland Natural Gas IncreaseDecreaseinAccountsReceivableOilandNaturalGas	60832000	USD
	gpor	Increase Decreasein Accounts Receivable Oiland Natural Gas IncreaseDecreaseinAccountsReceivableOilandNaturalGas	-28767000	USD
	gpor	Increase Decreasein Accounts Receivable Joint Operationsand Other IncreaseDecreaseinAccountsReceivableJointOperationsandOther	-5536000	USD
	gpor	Increase Decreasein Accounts Receivable Joint Operationsand Other IncreaseDecreaseinAccountsReceivableJointOperationsandOther	3005000	USD
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	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	79193000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-40552000	USD
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	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-135471000	USD
	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	45620000	USD
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	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2721000	USD
	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	41260000	USD
	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	-153894000	USD
	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	27299000	USD
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	gpor	Capitalized Stock Based Compensation CapitalizedStockBasedCompensation	930000	USD
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	us-gaap	Asset Retirement Obligation Period Increase Decrease AssetRetirementObligationPeriodIncreaseDecrease	546000	USD
	us-gaap	Asset Retirement Obligation Period Increase Decrease AssetRetirementObligationPeriodIncreaseDecrease	2343000	USD
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	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	USD
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	gpor	Noncash Or Part Noncash Acquisition Contingent Consideration NoncashOrPartNoncashAcquisitionContingentConsideration	0	USD
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	us-gaap	Stock Issued1 StockIssued1	0	USD
	us-gaap	Stock Issued1 StockIssued1	0	USD
	gpor	Foreign Currency Translation Gain Loss On Investment In Equity Method Investment ForeignCurrencyTranslationGainLossOnInvestmentInEquityMethodInvestment	0	USD
	gpor	Foreign Currency Translation Gain Loss On Investment In Equity Method Investment ForeignCurrencyTranslationGainLossOnInvestmentInEquityMethodInvestment	2570000	USD
	gpor	Foreign Currency Translation Gain Loss On Investment In Equity Method Investment ForeignCurrencyTranslationGainLossOnInvestmentInEquityMethodInvestment	-4497000	USD
CY2021Q2	us-gaap	Reorganization Value ReorganizationValue	2300000000	USD
CY2021Q2	gpor	Reorganization Post Petition Liabilities And Allowed Claims ReorganizationPostPetitionLiabilitiesAndAllowedClaims	3100000000	USD
CY2021Q2	gpor	Enterprise Value EnterpriseValue	1600000000	USD
CY2021Q2	gpor	Enterprise Value EnterpriseValue	1600000000	USD
CY2021Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1526000	USD
CY2021Q2	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	852751000	USD
CY2021Q2	gpor	Stockholders Equity Including Mezzanine Equity StockholdersEquityIncludingMezzanineEquity	748775000	USD
CY2021Q2	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	55000000	USD
CY2021Q2	gpor	Enterprise Value EnterpriseValue	1600000000	USD
CY2021Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1526000	USD
CY2021Q2	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	686489000	USD
CY2021Q2	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	19084000	USD
CY2021Q2	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	54109000	USD
CY2021Q2	us-gaap	Reorganization Value ReorganizationValue	2252990000	USD
CY2021Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1526000	USD
CY2021Q2	us-gaap	Restricted Cash Current RestrictedCashCurrent	57891000	USD
CY2021Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	180711000	USD
CY2021Q2	us-gaap	Oil And Gas Joint Interest Billing Receivables Current OilAndGasJointInterestBillingReceivablesCurrent	15431000	USD
CY2021Q2	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	25295000	USD
CY2021Q2	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	3465000	USD
CY2021Q2	us-gaap	Assets Current AssetsCurrent	284319000	USD
CY2021Q2	gpor	Proved Oil And Gas Property Full Cost Method Gross ProvedOilAndGasPropertyFullCostMethodGross	1697408000	USD
CY2021Q2	gpor	Unproved Oil And Gas Property Full Cost Method Gross UnprovedOilAndGasPropertyFullCostMethodGross	230174000	USD
CY2021Q2	gpor	Property Plantand Equipment Other Than Oil And Gas Property Gross PropertyPlantandEquipmentOtherThanOilAndGasPropertyGross	6893000	USD
CY2021Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1934475000	USD
CY2021Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	0	USD
CY2021Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1934475000	USD
CY2021Q2	us-gaap	Equity Method Investments EquityMethodInvestments	0	USD
CY2021Q2	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	8183000	USD
CY2021Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	47000	USD
CY2021Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	693774000	USD
CY2021Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	25966000	USD
CY2021Q2	gpor	Total Other Assets TotalOtherAssets	34196000	USD
CY2021Q2	us-gaap	Assets Assets	2252990000	USD
CY2021Q2	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	506799000	USD
CY2021Q2	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	98900000	USD
CY2021Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	38000	USD
CY2021Q2	us-gaap	Long Term Debt Current LongTermDebtCurrent	60000000	USD
CY2021Q2	us-gaap	Liabilities Current LiabilitiesCurrent	665737000	USD
CY2021Q2	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	80742000	USD
CY2021Q2	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	19084000	USD
CY2021Q2	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	9000	USD
CY2021Q2	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	792751000	USD
CY2021Q2	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	892586000	USD
CY2021Q2	us-gaap	Liabilities Liabilities	1558323000	USD
CY2021Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2021Q2	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	55000000	USD
CY2021Q2	us-gaap	Common Stock Value CommonStockValue	2000	USD
CY2021Q2	us-gaap	Common Stock Value CommonStockValue	2000	USD
CY2021Q2	us-gaap	Treasury Stock Value TreasuryStockValue	54109000	USD
CY2021Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	0	USD
CY2021Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	0	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	639667000	USD
CY2021Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2252990000	USD
CY2021Q2	us-gaap	Liabilities Subject To Compromise LiabilitiesSubjectToCompromise	2224449000	USD
	us-gaap	Debtor Reorganization Items Legal And Advisory Professional Fees DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees	0	USD
	us-gaap	Debtor Reorganization Items Legal And Advisory Professional Fees DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees	81565000	USD
	us-gaap	Debtor Reorganization Items Gain Loss On Settlement Of Other Claims Net1 DebtorReorganizationItemsGainLossOnSettlementOfOtherClaimsNet1	0	USD
	us-gaap	Debtor Reorganization Items Gain Loss On Settlement Of Other Claims Net1 DebtorReorganizationItemsGainLossOnSettlementOfOtherClaimsNet1	575182000	USD
	gpor	Debtor Reorganization Items Elimination Predecessor Accumulated Other Comprehensive Income DebtorReorganizationItemsEliminationPredecessorAccumulatedOtherComprehensiveIncome	40430000	USD
	us-gaap	Debtor Reorganization Items Debtor In Possession Facility Financing Costs DebtorReorganizationItemsDebtorInPossessionFacilityFinancingCosts	0	USD
	us-gaap	Debtor Reorganization Items Debtor In Possession Facility Financing Costs DebtorReorganizationItemsDebtorInPossessionFacilityFinancingCosts	3150000	USD
	us-gaap	Debtor Reorganization Items Other Expense Income DebtorReorganizationItemsOtherExpenseIncome	0	USD
	us-gaap	Debtor Reorganization Items Other Expense Income DebtorReorganizationItemsOtherExpenseIncome	22383000	USD
	us-gaap	Reorganization Items ReorganizationItems	0	USD
	us-gaap	Reorganization Items ReorganizationItems	-266898000	USD
CY2021Q3	gpor	Proved Oil And Gas Property Full Cost Method Gross ProvedOilAndGasPropertyFullCostMethodGross	1831762000	USD
CY2020Q4	gpor	Proved Oil And Gas Property Full Cost Method Gross ProvedOilAndGasPropertyFullCostMethodGross	9359866000	USD
CY2021Q3	gpor	Unproved Oil And Gas Property Full Cost Method Gross UnprovedOilAndGasPropertyFullCostMethodGross	216357000	USD
CY2020Q4	gpor	Unproved Oil And Gas Property Full Cost Method Gross UnprovedOilAndGasPropertyFullCostMethodGross	1457043000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	4891000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	85530000	USD
CY2021Q3	us-gaap	Land Land	386000	USD
CY2020Q4	us-gaap	Land Land	3008000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2053396000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	10905447000	USD
CY2021Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	212403000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	8819178000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1840993000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2086269000	USD
	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	117800000	USD
CY2020Q3	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	270900000	USD
	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	1400000000	USD
CY2021Q3	gpor	Capitalized General And Administrative Costs CapitalizedGeneralAndAdministrativeCosts	5100000	USD
	gpor	Capitalized General And Administrative Costs CapitalizedGeneralAndAdministrativeCosts	7300000	USD
	gpor	Capitalized General And Administrative Costs CapitalizedGeneralAndAdministrativeCosts	8000000	USD
CY2020Q3	gpor	Capitalized General And Administrative Costs CapitalizedGeneralAndAdministrativeCosts	6200000	USD
	gpor	Capitalized General And Administrative Costs CapitalizedGeneralAndAdministrativeCosts	19800000	USD
CY2021Q3	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization Cumulative CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative	216357000	USD
	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	14600000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	63566000	USD
	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	546000	USD
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1229000	USD
CY2021Q2	us-gaap	Asset Retirement Obligation AssetRetirementObligation	65341000	USD
CY2021Q2	gpor	Asset Retirement Obligation Less Adjustments AssetRetirementObligationLessAdjustments	19084000	USD
CY2021Q2	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	37000	USD
CY2021Q2	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	226000	USD
CY2021Q2	us-gaap	Asset Retirement Obligation AssetRetirementObligation	19347000	USD
CY2021Q3	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	19000	USD
CY2021Q3	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	488000	USD
CY2021Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	19854000	USD
CY2021Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	1104000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	0	USD
CY2021Q3	us-gaap	Long Term Debt LongTermDebt	749502000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	2258962000	USD
CY2021Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	60000000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	253743000	USD
CY2021Q3	gpor	Liabilities Subject To Compromise Debt LiabilitiesSubjectToCompromiseDebt	0	USD
CY2020Q4	gpor	Liabilities Subject To Compromise Debt LiabilitiesSubjectToCompromiseDebt	2005219000	USD
CY2021Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	689502000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	0	USD
CY2021Q3	us-gaap	Debtor In Possession Financing Letters Of Credit Outstanding DebtorInPossessionFinancingLettersOfCreditOutstanding	262500000	USD
CY2021Q3	us-gaap	Debtor In Possession Financing Amount Arranged DebtorInPossessionFinancingAmountArranged	105000000	USD
CY2021Q3	us-gaap	Debtor In Possession Financing Borrowings Outstanding DebtorInPossessionFinancingBorrowingsOutstanding	157500000	USD
CY2021Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	42000000	shares
CY2021Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2021Q3	us-gaap	Temporary Equity Shares Authorized TemporaryEquitySharesAuthorized	110000	shares
CY2021Q3	us-gaap	Temporary Equity Par Or Stated Value Per Share TemporaryEquityParOrStatedValuePerShare	0.0001
CY2021Q2	us-gaap	Temporary Equity Liquidation Preference Per Share TemporaryEquityLiquidationPreferencePerShare	1000
CY2021Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	19800000	shares
CY2021Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	55000	shares
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CY2021Q2	gpor	Dividends Paid In Kind Ratio DividendsPaidInKindRatio	1.50
CY2021Q2	gpor	Dividends Paid In Kind Ratio DividendsPaidInKindRatio	1.50
CY2021Q2	us-gaap	Preferred Stock Convertible Conversion Price PreferredStockConvertibleConversionPrice	14.00
CY2021Q2	gpor	Preferred Stock Value Outstanding Payment Period PreferredStockValueOutstandingPaymentPeriod	P3D
	us-gaap	Preferred Stock Dividends Shares PreferredStockDividendsShares	2065	shares
	us-gaap	Dividends Preferred Stock Paidinkind DividendsPreferredStockPaidinkind	30000	USD
CY2021Q2	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	55000	shares
CY2021Q2	gpor	Temporary Equity Stock Issued During Period Shares New Issues TemporaryEquityStockIssuedDuringPeriodSharesNewIssues	1006	shares
CY2021Q2	us-gaap	Stock Issued During Period Shares Conversion Of Units StockIssuedDuringPeriodSharesConversionOfUnits	146	shares
CY2021Q2	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	55860	shares
CY2021Q3	gpor	Temporary Equity Stock Issued During Period Shares New Issues TemporaryEquityStockIssuedDuringPeriodSharesNewIssues	2065	shares
CY2021Q3	us-gaap	Stock Issued During Period Shares Conversion Of Units StockIssuedDuringPeriodSharesConversionOfUnits	5	shares
CY2021Q3	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	57920	shares
CY2021Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4400000	USD
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2021Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	-461313000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-380963000	USD
CY2021Q3	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	2095000	USD
CY2020Q3	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
CY2021Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2020Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-463408000	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-463408000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-380963000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-380963000	USD
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20598000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	160683000	shares
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-22.50
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-22.50
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.37
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.37
	us-gaap	Net Income Loss NetIncomeLoss	-670898000	USD
	us-gaap	Net Income Loss NetIncomeLoss	250996000	USD
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	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	3126000	USD
	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
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	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-674024000	USD
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	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-1459569000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20507000	shares
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CY2021Q3	gpor	Supply Commitment Due In Year One SupplyCommitmentDueInYearOne	4000	MMBTU
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CY2020Q3	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-53823000	USD
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CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	3103000	USD
CY2021Q3	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	3103000	USD
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	0	USD
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	833657000	USD
CY2021Q3	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	3103000	USD
CY2021Q3	us-gaap	Derivative Liability Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	830554000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	1738000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	48245000	USD
CY2020Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	25730000	USD
CY2020Q4	us-gaap	Derivative Liability Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	22515000	USD
CY2021Q3	gpor	Contingent Consideration Asset Fair Value ContingentConsiderationAssetFairValue	5300000	USD
CY2021Q3	gpor	Contingent Consideration Change In Amount Asset ContingentConsiderationChangeInAmountAsset	-1200000	USD
	gpor	Contingent Consideration Change In Amount Asset ContingentConsiderationChangeInAmountAsset	-100000	USD
CY2020Q3	gpor	Contingent Consideration Change In Amount Asset ContingentConsiderationChangeInAmountAsset	-200000	USD
	gpor	Contingent Consideration Change In Amount Asset ContingentConsiderationChangeInAmountAsset	-3100000	USD
	gpor	Contingent Consideration Asset Settlements ContingentConsiderationAssetSettlements	600000	USD
	gpor	Contingent Consideration Asset Settlements ContingentConsiderationAssetSettlements	200000	USD
	gpor	Contingent Consideration Asset Settlements ContingentConsiderationAssetSettlements	300000	USD
CY2021Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	185900000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	119900000	USD
	us-gaap	Revenue Performance Obligation Description Of Timing RevenuePerformanceObligationDescriptionOfTiming	However, settlement statements for certain sales may be received for 30 to 90 days after the date production is delivered, and as a result, the Company is required to estimate the amount of production that was delivered to the purchaser and the price that will be received for the sale of the product
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	24816000	USD
CY2020Q3	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-153000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-342000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-10987000	USD
CY2021Q3	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated Inception To Date Percent RestructuringAndRelatedCostNumberOfPositionsEliminatedInceptionToDatePercent	0.03
CY2021Q3	us-gaap	Severance Costs1 SeveranceCosts1	2858000	USD
CY2020Q3	us-gaap	Severance Costs1 SeveranceCosts1	1460000	USD
CY2021Q3	us-gaap	Other Restructuring Costs OtherRestructuringCosts	0	USD
CY2020Q3	us-gaap	Other Restructuring Costs OtherRestructuringCosts	7524000	USD
CY2021Q3	us-gaap	Restructuring Costs RestructuringCosts	2858000	USD
CY2020Q3	us-gaap	Restructuring Costs RestructuringCosts	8984000	USD
	us-gaap	Severance Costs1 SeveranceCosts1	2858000	USD
	us-gaap	Severance Costs1 SeveranceCosts1	0	USD
	us-gaap	Severance Costs1 SeveranceCosts1	1460000	USD
	us-gaap	Other Restructuring Costs OtherRestructuringCosts	0	USD
	us-gaap	Other Restructuring Costs OtherRestructuringCosts	0	USD
	us-gaap	Other Restructuring Costs OtherRestructuringCosts	8141000	USD
	us-gaap	Restructuring Costs RestructuringCosts	2858000	USD
	us-gaap	Restructuring Costs RestructuringCosts	0	USD
	us-gaap	Restructuring Costs RestructuringCosts	9601000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	35000	USD
	us-gaap	Lease Cost LeaseCost	5051000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	10000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	25000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	34000	USD
CY2021Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	10000	USD
CY2020Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1692000	USD
CY2021Q3	us-gaap	Variable Lease Cost VariableLeaseCost	0	USD
CY2020Q3	us-gaap	Variable Lease Cost VariableLeaseCost	245000	USD
CY2021Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2873000	USD
CY2020Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2259000	USD
CY2021Q3	us-gaap	Lease Cost LeaseCost	2883000	USD
CY2020Q3	us-gaap	Lease Cost LeaseCost	4196000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	18000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	41000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	7970000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	0	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	0	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	705000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	5033000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	4496000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	7698000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.0001
	us-gaap	Lease Cost LeaseCost	4537000	USD
	us-gaap	Lease Cost LeaseCost	16373000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	46000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	48000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	109000	USD
	us-gaap	Operating Lease Payments Use OperatingLeasePaymentsUse	0	USD
	us-gaap	Operating Lease Payments Use OperatingLeasePaymentsUse	0	USD
	us-gaap	Operating Lease Payments Use OperatingLeasePaymentsUse	9786000	USD
	gpor	Operating Lease Payments Use Related Party OperatingLeasePaymentsUseRelatedParty	0	USD
	gpor	Operating Lease Payments Use Related Party OperatingLeasePaymentsUseRelatedParty	0	USD
	gpor	Operating Lease Payments Use Related Party OperatingLeasePaymentsUseRelatedParty	6800000	USD
CY2021Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P0Y10M20D
CY2021Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0398
CY2021Q2	gpor	Reorganization Chapter11 Bankruptcy Proceedings The Estimated In Equity Values Of Codi ReorganizationChapter11BankruptcyProceedingsTheEstimatedInEquityValuesOfCODI	708800000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.034
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-8000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	700000	USD
CY2020Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.005
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7300000	USD

Files In Submission

Name	View Source	Status
0001628280-21-021460-index-headers.html	Edgar Link	pending
0001628280-21-021460-index.html	Edgar Link	pending
0001628280-21-021460.txt	Edgar Link	pending
0001628280-21-021460-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
gpor-09302021xex311.htm	Edgar Link	pending
gpor-09302021xex312.htm	Edgar Link	pending
gpor-09302021xex321.htm	Edgar Link	pending
gpor-09302021xex322.htm	Edgar Link	pending
gpor-20210930.htm	Edgar Link	pending
gpor-20210930.xsd	Edgar Link	pending
gpor-20210930_cal.xml	Edgar Link	unprocessable
gpor-20210930_def.xml	Edgar Link	unprocessable
gpor-20210930_htm.xml	Edgar Link	completed
gpor-20210930_lab.xml	Edgar Link	unprocessable
gpor-20210930_pre.xml	Edgar Link	unprocessable
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$GPOR
GULFPORT ENERGY CORP Stock $gpor

2021 Q4 Form 10-Q Financial Statement

#000162828021021460 Filed on November 03, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GPOR GULFPORT ENERGY CORP Stock $gpor

2021 Q4 Form 10-Q Financial Statement

#000162828021021460 Filed on November 03, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GPOR
GULFPORT ENERGY CORP Stock $gpor