$GPOR
GULFPORT ENERGY CORP Stock $gpor

$gpor Overview Financials Valuation SEC Filings Company Website

2013 Q4 Form 10-K Financial Statement

#000144530514000751 Filed on February 28, 2014

Income Statement

Concept	2013 Q4	2012 Q4	2012 Q3
Revenue	$68.07M	$56.60M	$60.54M
YoY Change	20.25%	-17.9%	4.23%
Cost Of Revenue	$14.90M	$12.70M	$13.70M
YoY Change	17.32%	-6.62%	14.17%
Gross Profit	$53.20M	$44.00M	$46.80M
YoY Change	20.91%	-20.43%	1.52%
Gross Profit Margin	78.16%	77.73%	77.31%
Selling, General & Admin	$13.00M	$4.900M	$3.100M
YoY Change	165.31%	157.89%	55.0%
% of Gross Profit	24.44%	11.14%	6.62%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$37.10M	$20.30M	$25.38M
YoY Change	82.76%	-6.45%	72.21%
% of Gross Profit	69.74%	46.14%	54.22%
Operating Expenses	$50.30M	$25.30M	$42.36M
YoY Change	98.81%	6.3%	46.25%
Operating Profit	$2.926M	$25.88M	$18.18M
YoY Change	-88.69%	-18.08%	-37.57%
Interest Expense	$42.40M	$4.300M	$1.003M
YoY Change	886.05%	-714.29%	345.78%
% of Operating Profit	1449.08%	16.62%	5.52%
Other Income/Expense, Net			-$2.162M
YoY Change			1883.49%
Pretax Income	$45.30M	$30.20M	$16.02M
YoY Change	50.0%	-2.27%	-44.79%
Income Tax	$21.03M	$10.85M	$15.51M
% Of Pretax Income	46.42%	35.92%	96.87%
Net Earnings	$24.28M	$15.88M	$502.0K
YoY Change	52.86%	-48.72%	-98.27%
Net Earnings / Revenue	35.67%	28.06%	0.83%
Basic Earnings Per Share	$0.30	$0.28	$0.01
Diluted Earnings Per Share	$0.30	$0.28	$0.01
COMMON SHARES
Basic Shares Outstanding	77.58M shares	55.72M shares	55.69M shares
Diluted Shares Outstanding			56.29M shares

Balance Sheet

Concept	2013 Q4	2012 Q4	2012 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$459.0M	$167.1M	$12.30M
YoY Change	174.69%	77.96%	-45.81%
Cash & Equivalents	$459.0M	$167.1M	$12.28M
Short-Term Investments
Other Short-Term Assets	$9.900M	$2.200M	$3.600M
YoY Change	350.0%	-24.14%	-57.14%
Inventory
Prepaid Expenses
Receivables	$58.82M	$25.62M	$24.82M
Other Receivables	$900.0K	$0.00	$0.00
Total Short-Term Assets	$531.1M	$229.7M	$51.61M
YoY Change	131.2%	77.29%	-7.17%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.704B	$953.9M	$705.8M
YoY Change	78.6%	103.54%	71.26%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$440.1M	$381.5M	$206.7M
YoY Change	15.36%	339.38%	269.09%
Other Assets	$17.85M	$13.30M	$5.530M
YoY Change	34.27%	159.52%	-26.27%
Total Long-Term Assets	$2.162B	$1.349B	$919.0M
YoY Change	60.31%	140.15%	84.61%
TOTAL ASSETS
Total Short-Term Assets	$531.1M	$229.7M	$51.61M
Total Long-Term Assets	$2.162B	$1.349B	$919.0M
Total Assets	$2.693B	$1.578B	$970.6M
YoY Change	70.63%	128.37%	75.39%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$190.7M	$110.2M	$107.1M
YoY Change	73.05%	151.03%	75.0%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$159.0K	$150.0K	$147.0K
YoY Change	6.0%	6.38%	47.0%
Total Short-Term Liabilities	$203.9M	$120.9M	$116.1M
YoY Change	68.69%	170.87%	87.53%
LONG-TERM LIABILITIES
Long-Term Debt	$299.0M	$298.9M	$143.0M
YoY Change	0.05%	13853.69%	6401.5%
Other Long-Term Liabilities	$0.00	$354.0K	$15.40M
YoY Change	-100.0%		32.76%
Total Long-Term Liabilities	$299.0M	$299.2M	$143.0M
YoY Change	-0.07%	13870.21%	936.47%
TOTAL LIABILITIES
Total Short-Term Liabilities	$203.9M	$120.9M	$116.1M
Total Long-Term Liabilities	$299.0M	$299.2M	$143.0M
Total Liabilities	$642.9M	$452.0M	$290.0M
YoY Change	42.25%	668.53%	282.56%
SHAREHOLDERS EQUITY
Retained Earnings	$246.1M	$92.92M	$77.04M
YoY Change	164.87%	278.53%
Common Stock	$851.0K	$674.0K	$557.0K
YoY Change	26.26%	21.22%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.050B	$1.126B	$680.6M
YoY Change
Total Liabilities & Shareholders Equity	$2.693B	$1.578B	$970.6M
YoY Change	70.63%	128.37%	75.39%

Cashflow Statement

Concept	2013 Q4	2012 Q4	2012 Q3
OPERATING ACTIVITIES
Net Income	$24.28M	$15.88M	$502.0K
YoY Change	52.86%	-48.72%	-98.27%
Depreciation, Depletion And Amortization	$37.10M	$20.30M	$25.38M
YoY Change	82.76%	-6.45%	72.21%
Cash From Operating Activities	$50.10M	$33.30M	$66.40M
YoY Change	50.45%	-7.76%	17.31%
INVESTING ACTIVITIES
Capital Expenditures	-$200.7M	-$488.0M	-$118.6M
YoY Change	-58.87%	471.43%	26.44%
Acquisitions
YoY Change
Other Investing Activities	$107.3M	$35.40M	-$15.00M
YoY Change	203.11%	-565.79%	68.54%
Cash From Investing Activities	-$93.50M	-$452.7M	-$133.6M
YoY Change	-79.35%	386.77%	29.96%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$427.9M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	406.9M	574.2M	72.90M
YoY Change	-29.14%	348.24%	13.55%
NET CHANGE
Cash From Operating Activities	50.10M	33.30M	66.40M
Cash From Investing Activities	-93.50M	-452.7M	-133.6M
Cash From Financing Activities	406.9M	574.2M	72.90M
Net Change In Cash	363.5M	154.8M	5.700M
YoY Change	134.82%	117.42%	-68.33%
FREE CASH FLOW
Cash From Operating Activities	$50.10M	$33.30M	$66.40M
Capital Expenditures	-$200.7M	-$488.0M	-$118.6M
Free Cash Flow	$250.8M	$521.3M	$185.0M
YoY Change	-51.89%	329.05%	23.01%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	190707000	USD
CY2012Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	110244000	USD
CY2013Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	58824000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	25615000	USD
CY2011	us-gaap	Accretion Of Discount AccretionOfDiscount	31549000	USD
CY2012	us-gaap	Accretion Of Discount AccretionOfDiscount	37668000	USD
CY2013	us-gaap	Accretion Of Discount AccretionOfDiscount	34864000	USD
CY2013Q4	us-gaap	Accumulated Capitalized Interest Costs AccumulatedCapitalizedInterestCosts	5980000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	665884000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	784717000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-9660000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	0	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-4720000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	1576000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-9781000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	2952000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	2442000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	1087000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-3429000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-9781000	USD
	us-gaap	Acquisition Costs AcquisitionCosts	1068000	USD
CY2011	us-gaap	Acquisition Costs AcquisitionCosts	106704000	USD
CY2013	us-gaap	Acquisition Costs AcquisitionCosts	342857000	USD
CY2012	us-gaap	Acquisition Costs AcquisitionCosts	493981000	USD
CY2013Q4	us-gaap	Acquisition Costs Cumulative AcquisitionCostsCumulative	944610000	USD
CY2013Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1813058000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1036245000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1287000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4688000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10495000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4700000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10500000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1300000	USD
CY2012	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	59000	USD
CY2013	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	298000	USD
CY2011	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	USD
CY2011	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	540000	USD
CY2013	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1012000	USD
CY2012	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	640000	USD
CY2012	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2013	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2011	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2013Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	15083000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	13275000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	12653000	USD
CY2013	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	717000	USD
CY2012	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	698000	USD
CY2011	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	666000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	60000	USD
CY2013Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	795000	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	1390000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	3556000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	2195000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	2465000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	2271000	USD
CY2013Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	14288000	USD
CY2012Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	13215000	USD
CY2012Q4	us-gaap	Assets Assets	1578368000	USD
CY2013Q4	us-gaap	Assets Assets	2693136000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	229721000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	531104000	USD
CY2012	us-gaap	Average Sales Prices AverageSalesPrices	2.76
CY2013	us-gaap	Average Sales Prices AverageSalesPrices	3.67
CY2012	us-gaap	Average Sales Prices AverageSalesPrices	91.32
CY2011	us-gaap	Average Sales Prices AverageSalesPrices	96.19
CY2011	us-gaap	Average Sales Prices AverageSalesPrices	4.12
CY2013Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	4626000	USD
CY2012Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	3926000	USD
CY2013Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	779561000	USD
CY2012Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	661442000	USD
	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	1068000	USD
CY2012	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	493981000	USD
CY2011	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	106704000	USD
CY2013	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	348837000	USD
CY2012Q4	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization Cumulative CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative	626295000	USD
CY2013Q4	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization Cumulative CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative	950590000	USD
CY2012Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	1611090000	USD
CY2013Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	2477178000	USD
CY2012Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	949648000	USD
CY2013Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	1697617000	USD
CY2013Q4	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	1526588000	USD
CY2012Q4	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	984795000	USD
CY2012Q4	us-gaap	Capitalized Costs Unproved Properties CapitalizedCostsUnprovedProperties	626295000	USD
CY2013Q4	us-gaap	Capitalized Costs Unproved Properties CapitalizedCostsUnprovedProperties	950590000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	458956000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	167088000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2468000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	93897000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	73191000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	91429000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	291868000	USD
CY2013Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	457700000	USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	85177532	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	67527386	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	85177532	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	67527386	shares
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	851000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	674000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	62279000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	146840000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	112853000	USD
CY2013	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	338153000	USD
CY2011	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	119522000	USD
CY2012	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	513904000	USD
CY2011	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	1390000	USD
CY2012	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	2195000	USD
CY2013	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	3556000	USD
CY2012	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	121787000	USD
CY2011	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	123489000	USD
CY2013	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	408121000	USD
CY2012	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	93397000	USD
CY2011	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	3994000	USD
CY2013	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	26174000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	6325000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	282000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	646000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6860000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	84000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2013Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	320800000	USD
CY2013Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	3200000	USD
CY2012Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	3105000	USD
CY2013Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	2808000	USD
CY2013Q4	us-gaap	Debt Instrument Unamortized Premium DebtInstrumentUnamortizedPremium	400000	USD
CY2012	us-gaap	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	214867000	USD
CY2011	us-gaap	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	0	USD
CY2013	us-gaap	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	0	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-372000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	23419000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	77566000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7385000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2214000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Charitable Contribution Carryforwards DeferredTaxAssetsCharitableContributionCarryforwards	5000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Charitable Contribution Carryforwards DeferredTaxAssetsCharitableContributionCarryforwards	3000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Charitable Contribution Carryforwards DeferredTaxAssetsCharitableContributionCarryforwards	25000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	14148000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	25111000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	48994000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Hedging Transactions DeferredTaxAssetsHedgingTransactions	3836000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Hedging Transactions DeferredTaxAssetsHedgingTransactions	0	USD
CY2013Q4	us-gaap	Deferred Tax Assets Hedging Transactions DeferredTaxAssetsHedgingTransactions	8540000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	0	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	6927000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	-18607000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	-107348000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	1000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	9519000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	20368000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	36647000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1513000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1462000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	40880000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	6410000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	4408000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	4315000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	7968000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	1643000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	1000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	2074000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	0	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	2074000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	634000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	762000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	520000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4743000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	12347000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4629000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	35647000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	127716000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	28126000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	10000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	0	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	0	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	114275000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	18607000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	9232000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	46495000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	0	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	0	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	3618000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	8799000	USD
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	400000	USD
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	300000	USD
CY2013	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	600000	USD
CY2013	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	1
CY2013Q4	us-gaap	Deposit Assets DepositAssets	34000	USD
CY2012Q4	us-gaap	Deposit Assets DepositAssets	4000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	90749000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	118880000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	62320000	USD
CY2012Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	664000	USD
CY2013Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	324000	USD
CY2013Q4	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	521000	USD
CY2012Q4	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	0	USD
CY2013Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	12280000	USD
CY2012Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	10442000	USD
CY2012Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	0	USD
CY2013Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	11366000	USD
CY2012	us-gaap	Development Costs DevelopmentCosts	0	USD
CY2013	us-gaap	Development Costs DevelopmentCosts	0	USD
	us-gaap	Development Costs DevelopmentCosts	0	USD
CY2011	us-gaap	Development Costs DevelopmentCosts	0	USD
CY2013Q4	us-gaap	Development Costs Cumulative DevelopmentCostsCumulative	0	USD
CY2012	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	-3465000	USD
CY2011	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	0	USD
CY2013	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	0	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	96013000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	280976000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	260788000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	954833000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	1657708000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	1594050000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts1	-272500000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts1	-159113000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts1	-306810000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense1	-114867000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense1	-172691000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense1	-229649000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	444654000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	859442000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	637469000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts1	-295383000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts1	-274428000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts1	-147024000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	348641000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	578466000	USD
CY2013Q4	us-gaap	Due From Affiliate Current DueFromAffiliateCurrent		USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	376681000	USD
CY2012Q4	us-gaap	Due From Affiliate Current DueFromAffiliateCurrent	0	USD
CY2012Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	34848000	USD
CY2013Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	2617000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	23521000	USD
CY2013Q4	us-gaap	Due To Affiliate Current DueToAffiliateCurrent	0	USD
CY2012Q4	us-gaap	Due To Affiliate Current DueToAffiliateCurrent	0	USD
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.22
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.22
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.98
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.61
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.45
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.01
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.30
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.97
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.20
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.21
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.01
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.45
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
CY2013Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	19200000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M24D
CY2011	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	870000	USD
CY2013	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	1276000	USD
CY2012	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	820000	USD
CY2013	us-gaap	Equity Method Investment Net Sales Proceeds EquityMethodInvestmentNetSalesProceeds	-192737000	USD
CY2012	us-gaap	Equity Method Investment Net Sales Proceeds EquityMethodInvestmentNetSalesProceeds	0	USD
CY2011	us-gaap	Equity Method Investment Net Sales Proceeds EquityMethodInvestmentNetSalesProceeds	0	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	84107000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	68459000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	112406000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	74308000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	6375000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	17350000	USD
CY2012	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	1943000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	1107579000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	887884000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	110095000	USD
CY2012	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	39918000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	16955000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	162401000	USD
CY2013Q4	us-gaap	Equity Method Investments EquityMethodInvestments	440068000	USD
CY2012Q4	us-gaap	Equity Method Investments EquityMethodInvestments	381484000	USD
CY2013Q2	us-gaap	Escrow Deposit EscrowDeposit	-10000000	USD
CY2012	us-gaap	Exploration Costs ExplorationCosts	0	USD
	us-gaap	Exploration Costs ExplorationCosts	0	USD
CY2011	us-gaap	Exploration Costs ExplorationCosts	0	USD
CY2013	us-gaap	Exploration Costs ExplorationCosts	0	USD
CY2013Q4	us-gaap	Exploration Costs Cumulative ExplorationCostsCumulative	0	USD
CY2011	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	107110000	USD
CY2012	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	151654000	USD
CY2013	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	130826000	USD
CY2012Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	4476000	USD
CY2013Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	6093000	USD
CY2012	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	-144000	USD
CY2013	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	-18189000	USD
CY2011	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	25000	USD
CY2012	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-5702000	USD
CY2011	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	0	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	0	USD
CY2012	us-gaap	Gain Loss On Fair Value Hedge Ineffectiveness Net GainLossOnFairValueHedgeIneffectivenessNet	-100000	USD
CY2013	us-gaap	Gain Loss On Fair Value Hedge Ineffectiveness Net GainLossOnFairValueHedgeIneffectivenessNet	-18200000	USD
CY2011	us-gaap	Gain Loss On Sale Of Oil And Gas Property GainLossOnSaleOfOilAndGasProperty	0	USD
CY2013	us-gaap	Gain Loss On Sale Of Oil And Gas Property GainLossOnSaleOfOilAndGasProperty	-508000	USD
CY2012	us-gaap	Gain Loss On Sale Of Oil And Gas Property GainLossOnSaleOfOilAndGasProperty	7300000	USD
CY2013	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2012	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	7300000	USD
CY2011	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2012	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	443000	USD
CY2013	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	11030000	USD
CY2011	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	279000	USD
CY2012Q4	us-gaap	Gas Imbalance Payable Current And Noncurrent GasImbalancePayableCurrentAndNoncurrent	400000	USD
CY2013Q4	us-gaap	Gas Imbalance Payable Current And Noncurrent GasImbalancePayableCurrentAndNoncurrent	0	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	13808000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	8074000	USD
CY2013	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	22519000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	108422000	USD
CY2013	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	153192000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	71836000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	98199000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	251328000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	108332000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.28
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.22
CY2013	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.98
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.27
CY2013	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.97
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.20
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.06
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.06
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-1418000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8322000	USD
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	213058000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	8322000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-1418000	USD
CY2013	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	212714000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	98136000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-90000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26363000	USD
CY2012Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	15514000	USD
CY2013Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21027000	USD
CY2012Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2012Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2013Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28195000	USD
CY2013Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25514000	USD
CY2013Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23400000	USD
CY2012Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10849000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	37916000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	87965000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	34370000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-146000	USD
CY2013	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-42087000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	292000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	874000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4227000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1493000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	9297000	USD
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	1000	USD
CY2013	us-gaap	Income Taxes Paid IncomeTaxesPaid	2761000	USD
CY2012	us-gaap	Income Taxes Paid IncomeTaxesPaid	261000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	50506000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	29310000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	1612000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	13067000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	33209000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-2404000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	30117000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	-32231000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	4158000	USD
CY2012	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	25585000	USD
CY2013	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-30239000	USD
CY2011	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-36674000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	0	USD
CY2013	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	4523000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	0	USD
CY2012	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	179000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	1075000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-405000	USD
CY2011	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-8000	USD
CY2013	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-8000	USD
CY2012	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-8000	USD
CY2013	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	0	USD
CY2011	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	72000	USD
CY2012	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	0	USD
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	USD
CY2013	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	7132000	USD
CY2011	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	USD
CY2013	us-gaap	Interest Expense InterestExpense	17490000	USD
CY2012	us-gaap	Interest Expense InterestExpense	7458000	USD
CY2011	us-gaap	Interest Expense InterestExpense	1400000	USD
CY2013	us-gaap	Interest Expense Debt InterestExpenseDebt	17490000	USD
CY2012	us-gaap	Interest Expense Debt InterestExpenseDebt	7458000	USD
CY2011	us-gaap	Interest Expense Debt InterestExpenseDebt	1400000	USD
CY2013	us-gaap	Interest Paid InterestPaid	24270000	USD
CY2011	us-gaap	Interest Paid InterestPaid	963000	USD
CY2012	us-gaap	Interest Paid InterestPaid	1404000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	991000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	1461000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	24280000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	186000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	72000	USD
CY2013	us-gaap	Investment Income Interest InvestmentIncomeInterest	297000	USD
CY2013Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	178708000	USD
CY2012Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	151317000	USD
CY2013Q4	us-gaap	Land Land	412000	USD
CY2012Q4	us-gaap	Land Land	260000	USD
CY2013	us-gaap	Lease Operating Expense LeaseOperatingExpense	26703000	USD
CY2012	us-gaap	Lease Operating Expense LeaseOperatingExpense	24308000	USD
CY2011	us-gaap	Lease Operating Expense LeaseOperatingExpense	20897000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	451960000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	642898000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1578368000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2693136000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	203941000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	120896000	USD
CY2013Q4	us-gaap	Long Term Debt LongTermDebt	301995000	USD
CY2013Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	159000	USD
CY2012Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	150000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	0	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	159000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	300000000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1668000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	168000	USD
CY2013Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	299028000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	298888000	USD
CY2013	us-gaap	Loss Contingency Disclosures LossContingencyDisclosures	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:16px;padding-top:6px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">CONTINGENCIES</font></div><div style="line-height:120%;padding-bottom:16px;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Louisiana Department of Revenue (“LDR”) is disputing Gulfport’s severance tax payments to the State of Louisiana from the sale of oil under fixed price contracts during the years 2005 through 2007. The LDR maintains that Gulfport paid approximately </font><font style="font-family:inherit;font-size:10pt;">$1.8 million</font><font style="font-family:inherit;font-size:10pt;"> less in severance taxes under fixed price terms than the severance taxes Gulfport would have had to pay had it paid severance taxes on the oil at the contracted market rates only. Gulfport has denied any liability to the LDR for underpayment of severance taxes and has maintained that it was entitled to enter into the fixed price contracts with unrelated third parties and pay severance taxes based upon the proceeds received under those contracts. Gulfport has maintained its right to contest any final assessment or suit for collection if brought by the State. On April 20, 2009, the LDR filed a lawsuit in the 15</font><font style="font-family:inherit;font-size:10pt;"><sup style="vertical-align:top;line-height:120%;font-size:7pt">th</sup></font><font style="font-family:inherit;font-size:10pt;"> Judicial District Court, Lafayette Parish, in Louisiana against Gulfport seeking </font><font style="font-family:inherit;font-size:10pt;">$2.3 million</font><font style="font-family:inherit;font-size:10pt;"> in severance taxes, plus interest and court costs. Gulfport filed a response denying any liability to the LDR for underpayment of severance taxes. The LDR had taken no further action on this lawsuit since filing its petition other than propounding discovery requests to which Gulfport has responded. Since serving discovery requests on the LDR and receiving the LDR's responses in 2012, there has been no further activity on the case and no trial date has been set. </font></div><div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In December 2010, the LDR filed </font><font style="font-family:inherit;font-size:10pt;">two</font><font style="font-family:inherit;font-size:10pt;"> identical lawsuits against Gulfport in different venues (the 15th Judicial District Court and the 19th Judicial Court) to recover allegedly underpaid severance taxes on crude oil for the period January 1, 2007 through December 31, 2010, together with a claim for attorney’s fees. The petitions do not make any specific claim for damages or unpaid taxes. As with the lawsuit filed by the LDR in 2009 discussed in the paragraph above, Gulfport denies all liability and will vigorously defend the lawsuit. The LDR filed motions to stay the lawsuits before Gulfport filed any responsive pleadings. After years of no activity on either of these lawsuits, the LDR recently moved to dismiss one of the identical lawsuits it filed in the 19th Judicial District Court in 2010, amended the petition it filed in the 15th Judicial District Court in 2010 and served discovery requests on Gulfport. The LDR asserts that Gulfport underpaid severance taxes by nearly </font><font style="font-family:inherit;font-size:10pt;">$12 million</font><font style="font-family:inherit;font-size:10pt;"> from 2007 to 2010. The LDR also asserts that Gulfport owes an additional </font><font style="font-family:inherit;font-size:10pt;">$4.4 million</font><font style="font-family:inherit;font-size:10pt;"> and may be subject to additional penalties. In 2013, the LDR asserted that Gulfport owes additional severance taxes in connection with the cash settlements it received to terminate forward sales contracts. The LDR's claims are still in their infancy and there has been no formal discovery. Gulfport maintains that the LDR's claims are not well-grounded in fact or law and intends to aggressively defend the lawsuits. </font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;"></font><font style="font-family:inherit;font-size:10pt;">On July 30, 2010, </font><font style="font-family:inherit;font-size:10pt;">six</font><font style="font-family:inherit;font-size:10pt;"> individuals and </font><font style="font-family:inherit;font-size:10pt;">one</font><font style="font-family:inherit;font-size:10pt;"> limited liability company sued </font><font style="font-family:inherit;font-size:10pt;">15</font><font style="font-family:inherit;font-size:10pt;"> oil and gas companies in Cameron Parish Louisiana for surface contamination in areas where the defendants operated in an action entitled Reeds et al. v. BP American Production Company et al.,38th Judicial District. No. 10-18714. The plaintiffs’ original petition for damages, which did not name Gulfport as a defendant, alleges that the plaintiffs’ property located in Cameron Parish, Louisiana within the Hackberry oil field is contaminated as a result of historic oil and gas exploration and production activities. The plaintiffs allege that the defendants conducted, directed and participated in various oil and gas exploration and production activities on their property which allegedly have contaminated or otherwise caused damage to the property, and have sued the defendants for alleged breaches of oil, gas and mineral leases, as well as for alleged negligence, trespass, failure to warn, strict liability, punitive damages, lease liability, contract liability, unjust enrichment, restoration damages, assessment and response costs and stigma damages. On December 7, 2010, Gulfport was served with a copy of the plaintiffs’ first supplemental and amending petition which added </font><font style="font-family:inherit;font-size:10pt;">four</font><font style="font-family:inherit;font-size:10pt;"> additional plaintiffs and </font><font style="font-family:inherit;font-size:10pt;">six</font><font style="font-family:inherit;font-size:10pt;"> additional defendants, including Gulfport, bringing the total number of defendants to </font><font style="font-family:inherit;font-size:10pt;">21</font><font style="font-family:inherit;font-size:10pt;">. It also increased the total acreage at issue in this litigation from </font><font style="font-family:inherit;font-size:10pt;">240</font><font style="font-family:inherit;font-size:10pt;"> acres to approximately </font><font style="font-family:inherit;font-size:10pt;">1,700</font><font style="font-family:inherit;font-size:10pt;"> acres. In addition to the damages sought in the original petition, the plaintiffs now also seek: damages sufficient to cover the cost of conducting a comprehensive environmental assessment of all present and yet unidentified pollution and contamination of their property; the cost to restore the property to its pre-polluted original condition; damages for mental anguish and annoyance, discomfort and inconvenience caused by the nuisance created by defendants; land loss and subsidence damages and the cost of backfilling canals and other excavations; damages for loss of use of land and lost profits and income; attorney fees and expenses and damages for evaluation and remediation of any contamination that threatens groundwater. In addition to Gulfport, current defendants include ExxonMobil Oil Corporation, Mobil Exploration & Producing North America Inc., Chevron U.S.A. Inc., The Superior Oil Company, Union Oil Company of California, BP America Production Company, Tempest Oil Company, Inc., ConocoPhillips Company, Continental Oil Company, WM. T. Burton Industries, Inc., Freeport Sulphur Company, Eagle Petroleum Company, U.S. Oil of Louisiana, M&S Oil Company, and Empire Land Corporation, Inc. of Delaware. On January 21, 2011, Gulfport filed a pleading challenging the legal sufficiency of the petitions on several grounds and requesting that they either be dismissed or that plaintiffs be required to amend such petitions. In response to the pleadings filed by Gulfport and similar pleadings filed by other defendants, the plaintiffs filed a third amending petition with exhibits which expands the description of the property at issue, attaches numerous aerial photos and identifies the mineral leases at issue. In response, Gulfport and numerous defendants re-urged their pleadings challenging the legal sufficiency of the petitions. Some of the defendants’ grounds for challenging the plaintiffs’ petitions were heard by the court on May 25, 2011 and were denied. The court signed the written judgment on December 9, 2011. Gulfport noticed its intent to seek supervisory review on December 19, 2011 and the trial court fixed a return date of January 11, 2012 for the filing of the writ application. Gulfport filed its supervisory writ, which was denied by the Louisiana Third Circuit Court of Appeal and the Louisiana Supreme Court. The parties engaged in a non-binding mediation in July 2013 and discussion are on-going. At this time, the parties are continuing to conduct discovery. The trial date has been continued to July 2014. </font></div><div style="line-height:120%;padding-bottom:16px;padding-top:12px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Due to the early stages of the LDR and Reed litigation, the outcome is uncertain and management cannot determine the amount of loss, if any, that may result. In each case, management has determined the possibility of loss is remote. However, litigation is inherently uncertain. Adverse decisions in one or more of the above matters could have a material adverse effect on the Company’s financial condition or results of operations and management cannot determine the amount of loss, if any, that may result.</font></div><div style="line-height:120%;padding-bottom:16px;text-indent:30px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company has been named as a defendant in various other lawsuits related to its business. In each such case, management has determined that the possibility of loss is remote. The resolution of these matters is not expected to have a material adverse effect on the Company's financial condition or results of operations in future periods.</font></div><div style="line-height:120%;padding-top:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Concentration of Credit Risk</font></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Gulfport operates in the oil and gas industry principally in the state of Louisiana with sales to refineries, re-sellers such as pipeline companies, and local distribution companies. While certain of these customers are affected by periodic downturns in the economy in general or in their specific segment of the oil and gas industry, Gulfport believes that its level of credit-related losses due to such economic fluctuations has been immaterial and will continue to be immaterial to the Company’s results of operations in the long term.</font></div><div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company maintains cash balances at several banks. Accounts at each institution are insured by the Federal Deposit Insurance Corporation up to </font><font style="font-family:inherit;font-size:10pt;">$250,000</font><font style="font-family:inherit;font-size:10pt;">. At </font><font style="font-family:inherit;font-size:10pt;">December 31, 2013</font><font style="font-family:inherit;font-size:10pt;">, Gulfport held cash in excess of insured limits in these banks totaling </font><font style="font-family:inherit;font-size:10pt;">$457.7 million</font><font style="font-family:inherit;font-size:10pt;">.</font></div><div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">During the year ended </font><font style="font-family:inherit;font-size:10pt;">December 31, 2013</font><font style="font-family:inherit;font-size:10pt;">, Gulfport sold approximately </font><font style="font-family:inherit;font-size:10pt;">99%</font><font style="font-family:inherit;font-size:10pt;"> of its oil production to Shell Trading Company (“Shell”), </font><font style="font-family:inherit;font-size:10pt;">100%</font><font style="font-family:inherit;font-size:10pt;"> of its natural gas liquids production to Markwest Utica and </font><font style="font-family:inherit;font-size:10pt;">32%</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">31%</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">17%</font><font style="font-family:inherit;font-size:10pt;"> of its natural gas production to Sequent Energy Management, L.P., Hess and Interstate Gas Supply, Inc., respectively. During the year ended </font><font style="font-family:inherit;font-size:10pt;">December 31, 2012</font><font style="font-family:inherit;font-size:10pt;">, Gulfport sold approximately </font><font style="font-family:inherit;font-size:10pt;">92%</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">8%</font><font style="font-family:inherit;font-size:10pt;"> of its oil production to Shell and Diamondback O&G, respectively, </font><font style="font-family:inherit;font-size:10pt;">91%</font><font style="font-family:inherit;font-size:10pt;"> of its natural gas liquids production to Diamondback O&G, and </font><font style="font-family:inherit;font-size:10pt;">41%</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">18%</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">16%</font><font style="font-family:inherit;font-size:10pt;"> of its natural gas production to Noble Americas Gas, Hess and Chevron, respectively. During the year ended </font><font style="font-family:inherit;font-size:10pt;">December 31, 2011</font><font style="font-family:inherit;font-size:10pt;">, Gulfport sold approximately </font><font style="font-family:inherit;font-size:10pt;">93%</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">7%</font><font style="font-family:inherit;font-size:10pt;"> of its oil production to Shell and Diamondback O&G, respectively, </font><font style="font-family:inherit;font-size:10pt;">100%</font><font style="font-family:inherit;font-size:10pt;"> of its natural gas liquids production to Diamondback O&G and </font><font style="font-family:inherit;font-size:10pt;">50%</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">27%</font><font style="font-family:inherit;font-size:10pt;">, and </font><font style="font-family:inherit;font-size:10pt;">22%</font><font style="font-family:inherit;font-size:10pt;"> of its natural gas production to Hilcorp Energy Company, Chevron, and Diamondback O&G, respectively.</font></div></div>
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	256539000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	765063000	USD
CY2013	us-gaap	Loss On Fair Value Hedge Ineffectiveness LossOnFairValueHedgeIneffectiveness	9100000	USD
CY2012Q3	us-gaap	Minority Interest Ownership Percentage By Noncontrolling Owners MinorityInterestOwnershipPercentageByNoncontrollingOwners	0.10
CY2011	us-gaap	Net Income Loss NetIncomeLoss	108422000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	153192000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	153192000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	108422000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	191065000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	158138000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	153192000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	68371000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	714612000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-664260000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-840579000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-323248000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	199158000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	68371000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	43828000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	15883000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	44559000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	502000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	25117000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	24278000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	40527000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	26869000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	68371000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	108422000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-2632000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	936000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	195865000	USD
CY2013Q4	us-gaap	Notes Receivable Related Parties Current NotesReceivableRelatedPartiesCurrent	875000	USD
CY2012Q4	us-gaap	Notes Receivable Related Parties Current NotesReceivableRelatedPartiesCurrent	0	USD
CY2012Q4	us-gaap	Oil And Gas Property Full Cost Method Gross OilAndGasPropertyFullCostMethodGross	1611090000	USD
CY2013Q4	us-gaap	Oil And Gas Property Full Cost Method Gross OilAndGasPropertyFullCostMethodGross	2477178000	USD
CY2011	us-gaap	Operating Expenses OperatingExpenses	118290000	USD
CY2012	us-gaap	Operating Expenses OperatingExpenses	151663000	USD
CY2013	us-gaap	Operating Leases Rent Expense Minimum Rentals OperatingLeasesRentExpenseMinimumRentals	258000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	27263000	USD
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	15137000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	18178000	USD
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	14944000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	25947000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-6352000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-9779000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	1854000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	536000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	398000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	426000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	494000	USD
CY2012	us-gaap	Operating Leases Rent Expense Minimum Rentals OperatingLeasesRentExpenseMinimumRentals	139000	USD
CY2011	us-gaap	Operating Leases Rent Expense Minimum Rentals OperatingLeasesRentExpenseMinimumRentals	52000	USD
CY2013	us-gaap	Operating Expenses OperatingExpenses	207290000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	55463000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	110964000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	97263000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	25875000	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	2926000	USD
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	22456000	USD
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	213000	USD
CY2011	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	52000	USD
CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	132000	USD
CY2013	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	45000	USD
CY2012	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	7000	USD
CY2011	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	0	USD
CY2013	us-gaap	Origination Of Notes Receivable From Related Parties OriginationOfNotesReceivableFromRelatedParties	875000	USD
CY2012	us-gaap	Origination Of Notes Receivable From Related Parties OriginationOfNotesReceivableFromRelatedParties	0	USD
CY2011	us-gaap	Origination Of Notes Receivable From Related Parties OriginationOfNotesReceivableFromRelatedParties	3182000	USD
CY2013Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	17851000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	13295000	USD
CY2013	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-12223000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-1865000	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	1355000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-9100000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4431000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-6092000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	500000	USD
CY2013Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	0	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	354000	USD
CY2011	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	301000	USD
CY2012	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	325000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-4720000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1517000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-10290000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-4720000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-1005000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-500000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-8452000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1576000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-4419000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-4300000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	4300000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
CY2013	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	528000	USD
CY2012	us-gaap	Payments Of Loan Costs PaymentsOfLoanCosts	9175000	USD
CY2013	us-gaap	Payments Of Loan Costs PaymentsOfLoanCosts	1283000	USD
CY2011	us-gaap	Payments Of Loan Costs PaymentsOfLoanCosts	981000	USD
CY2012	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	147307000	USD
CY2011	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	34621000	USD
CY2013	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	47014000	USD
CY2011	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	287292000	USD
CY2013	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	808183000	USD
CY2012	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	757192000	USD
CY2012	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	638000	USD
CY2013	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	2322000	USD
CY2011	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	415000	USD
CY2013	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.12
CY2012	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.12
CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2013Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2013Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	2581000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1506000	USD
CY2012	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-10211000	USD
CY2012	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	63590000	USD
CY2013	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	0	USD
CY2011	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	1384000	USD
CY2012	us-gaap	Proceeds From Sale Of Other Property Plant And Equipment ProceedsFromSaleOfOtherPropertyPlantAndEquipment	140000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	307154000	USD
CY2011	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-41193000	USD
CY2013	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-43478000	USD
CY2013	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Reclassification</font></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain reclassifications have been made to prior period financial statements to conform to current period presentation.</font></div></div>
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	427091000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	766495000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	296835000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2013	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit		USD
CY2012	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	158500000	USD
CY2011	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	48000000	USD
CY2011	us-gaap	Proceeds From Sale Of Other Property Plant And Equipment ProceedsFromSaleOfOtherPropertyPlantAndEquipment	0	USD
CY2013	us-gaap	Proceeds From Sale Of Other Property Plant And Equipment ProceedsFromSaleOfOtherPropertyPlantAndEquipment	113000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1619752000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2488309000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1703592000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	953868000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	11131000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	8662000	USD
CY2013	us-gaap	Repayments Of Debt RepaymentsOfDebt	149000	USD
CY2011	us-gaap	Repayments Of Debt RepaymentsOfDebt	97634000	USD
CY2012	us-gaap	Repayments Of Debt RepaymentsOfDebt	158639000	USD
CY2013	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	118118000	USD
CY2013	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	49447000	USD
CY2013	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	29994000	USD
CY2011	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	61965000	USD
CY2012	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	90230000	USD
CY2011	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	119758000	USD
CY2013	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	79441000	USD
CY2012	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	104663000	USD
CY2012	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	26363000	USD
CY2011	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	-90000	USD
CY2012	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	78300000	USD
CY2011	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	119848000	USD
CY2013	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	64666000	USD
CY2011	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	47230000	USD
CY2012	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	53708000	USD
CY2011	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	228953000	USD
CY2013	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	262225000	USD
CY2012	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	248601000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	246110000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	92918000	USD
CY2012	us-gaap	Revenues Revenues	248926000	USD
CY2011	us-gaap	Revenues Revenues	229254000	USD
CY2013	us-gaap	Revenues Revenues	262753000	USD
CY2013Q1	us-gaap	Revenues Revenues	55000000	USD
CY2012Q3	us-gaap	Revenues Revenues	60537000	USD
CY2012Q2	us-gaap	Revenues Revenues	66325000	USD
CY2012Q4	us-gaap	Revenues Revenues	56603000	USD
CY2013Q4	us-gaap	Revenues Revenues	68067000	USD
CY2012Q1	us-gaap	Revenues Revenues	65461000	USD
CY2013Q2	us-gaap	Revenues Revenues	70434000	USD
CY2013Q3	us-gaap	Revenues Revenues	69252000	USD
CY2011	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-112553000	USD
CY2013	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-3591000	USD
CY2012	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-10504000	USD
CY2013	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	197559000	USD
CY2011	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	181723000	USD
CY2012	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	194893000	USD
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	765095000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	772000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	6297000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	2813000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	210241	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	3.50
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4797000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2308000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	628000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	0	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	0	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	0	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0.00
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0.00
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0.00
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0.00
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	306161000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0.00
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0.00
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	6621000	USD
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	10678000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	12538000	USD
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	8172000	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	458241	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	356241	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	335241	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	210241	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	6.37
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	6.51
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.23
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	3.50
CY2011	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	9.74
CY2012	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.80
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	11.20
CY2013Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	210241	shares
CY2013Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	210241	shares
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2013Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	12538000	USD
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P1Y0M26D
CY2011	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y4M28D
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y4M21D
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y0M26D
CY2010	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y5M23D
CY2012	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Period Increase Decrease StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease	-28040000	USD
CY2013	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Period Increase Decrease StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease	229825000	USD
CY2011	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Period Increase Decrease StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease	61194000	USD
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	125000	shares
CY2011	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	102000	shares
CY2012	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	21000	shares
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	426907000	USD
CY2012	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2013	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2011	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	184000	USD
CY2013	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1400000	USD
CY2011	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	993000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	1126408000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	2050238000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	632350000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	211056000	USD
CY2013	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	26933000	USD
CY2011	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	26054000	USD
CY2012	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	28957000	USD
CY2012Q4	us-gaap	Temporary Equity Shares Authorized TemporaryEquitySharesAuthorized	30000	shares
CY2013Q4	us-gaap	Temporary Equity Shares Authorized TemporaryEquitySharesAuthorized	30000	shares
CY2012Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	9388000	USD
CY2013Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	9341000	USD
CY2013	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Use of Estimates</font></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and revenues and expenses during the reporting period. Actual results could differ materially from those estimates. Significant estimates with regard to these financial statements include the estimate of proved oil and gas reserve quantities and the related present value of estimated future net cash flows there from, the amount and timing of asset retirement obligations, the realization of deferred tax assets and the realization of future net operating loss carryforwards available as reductions of income tax expense. The estimate of the Company’s oil and gas reserves is used to compute depletion, depreciation, amortization and impairment of oil and gas properties.</font></div></div>
CY2012	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	484134	shares
CY2013	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	485963	shares
CY2011	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	452123	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49206963	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	56417488	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	77861646	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48754840	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	77375683	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	55933354	shares
CY2013	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	0	USD
CY2012	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	1143000	USD
CY2011	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	0	USD
CY2013	gpor	Accounts Receivable Collection Period AccountsReceivableCollectionPeriod	P30D
CY2011Q1	gpor	Affiliates Participation In Acquisition Ratio AffiliatesParticipationInAcquisitionRatio	0.5
CY2013	gpor	Capitalized General And Administrative Costs CapitalizedGeneralAndAdministrativeCosts	14900000	USD
CY2011	gpor	Capitalized General And Administrative Costs CapitalizedGeneralAndAdministrativeCosts	5400000	USD
CY2012	gpor	Capitalized General And Administrative Costs CapitalizedGeneralAndAdministrativeCosts	9100000	USD
CY2013	gpor	Capitalized Stock Based Compensation CapitalizedStockBasedCompensation	4198000	USD
CY2011	gpor	Capitalized Stock Based Compensation CapitalizedStockBasedCompensation	515000	USD
CY2012	gpor	Capitalized Stock Based Compensation CapitalizedStockBasedCompensation	1875000	USD
CY2012Q4	gpor	Certificates Of Deposit Securing Letter Of Credit CertificatesOfDepositSecuringLetterOfCredit	275000	USD
CY2013Q4	gpor	Certificates Of Deposit Securing Letter Of Credit CertificatesOfDepositSecuringLetterOfCredit	275000	USD
CY2012	gpor	Change In Production Rates And Other ChangeInProductionRatesAndOther	58165000	USD
CY2011	gpor	Change In Production Rates And Other ChangeInProductionRatesAndOther	76149000	USD
CY2013	gpor	Change In Production Rates And Other ChangeInProductionRatesAndOther	186473000	USD
CY2012Q1	gpor	Class Of Warrant Or Right Expired ClassOfWarrantOrRightExpired	8875	shares
CY2013	gpor	Conversion Ratio Gas To Barrels Of Oil ConversionRatioGasToBarrelsOfOil	6
CY2013	gpor	Costs Incurred Recompletions Of Oil And Gas Properties CostsIncurredRecompletionsOfOilAndGasProperties	44633000	USD
CY2012	gpor	Costs Incurred Recompletions Of Oil And Gas Properties CostsIncurredRecompletionsOfOilAndGasProperties	24643000	USD
CY2011	gpor	Costs Incurred Recompletions Of Oil And Gas Properties CostsIncurredRecompletionsOfOilAndGasProperties	17259000	USD
CY2012Q4	gpor	Cumulative Capitalization Of General And Administrative Costs Incurred And Capitalized To Full Cost Pool CumulativeCapitalizationOfGeneralAndAdministrativeCostsIncurredAndCapitalizedToFullCostPool	32600000	USD
CY2013Q4	gpor	Cumulative Capitalization Of General And Administrative Costs Incurred And Capitalized To Full Cost Pool CumulativeCapitalizationOfGeneralAndAdministrativeCostsIncurredAndCapitalizedToFullCostPool	47500000	USD
CY2013Q3	gpor	Debt Instrument Covenant Compliance Earnings Before Income Tax Depreciation Depletion Amortization And Exploration Expenses Ratio DebtInstrumentCovenantComplianceEarningsBeforeIncomeTaxDepreciationDepletionAmortizationAndExplorationExpensesRatio	3.00
CY2013Q3	gpor	Debt Instrument Covenant Compliance Reasonable Transaction Expense Ratio DebtInstrumentCovenantComplianceReasonableTransactionExpenseRatio	2.00
CY2013	gpor	Debt Instrument Increase Decrease Accrued Interest DebtInstrumentIncreaseDecreaseAccruedInterest	-969000	USD
CY2012	gpor	Debt Instrument Increase Decrease Accrued Interest DebtInstrumentIncreaseDecreaseAccruedInterest	4155000	USD
CY2011	gpor	Debt Instrument Increase Decrease Accrued Interest DebtInstrumentIncreaseDecreaseAccruedInterest	-132000	USD
CY2013	gpor	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	84951000	USD
CY2012	gpor	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	24120000	USD
CY2011	gpor	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	-372000	USD
CY2012Q4	gpor	Deferred Tax Assets Investment In Noncontrolled Affiliates DeferredTaxAssetsInvestmentInNoncontrolledAffiliates	0	USD
CY2011Q4	gpor	Deferred Tax Assets Investment In Noncontrolled Affiliates DeferredTaxAssetsInvestmentInNoncontrolledAffiliates	78000	USD
CY2013Q4	gpor	Deferred Tax Assets Investment In Noncontrolled Affiliates DeferredTaxAssetsInvestmentInNoncontrolledAffiliates	0	USD
CY2011Q4	gpor	Deferred Tax Assets Non Oil And Gas Property Basis Difference DeferredTaxAssetsNonOilAndGasPropertyBasisDifference	103000	USD
CY2013Q4	gpor	Deferred Tax Assets Non Oil And Gas Property Basis Difference DeferredTaxAssetsNonOilAndGasPropertyBasisDifference	0	USD
CY2012Q4	gpor	Deferred Tax Assets Non Oil And Gas Property Basis Difference DeferredTaxAssetsNonOilAndGasPropertyBasisDifference	0	USD
CY2013Q4	gpor	Deferred Tax Liabilities Non Oil And Gass Property Basis Difference DeferredTaxLiabilitiesNonOilAndGassPropertyBasisDifference	249000	USD
CY2011Q4	gpor	Deferred Tax Liabilities Non Oil And Gass Property Basis Difference DeferredTaxLiabilitiesNonOilAndGassPropertyBasisDifference	0	USD
CY2012Q4	gpor	Deferred Tax Liabilities Non Oil And Gass Property Basis Difference DeferredTaxLiabilitiesNonOilAndGassPropertyBasisDifference	227000	USD
CY2011Q4	gpor	Deferred Tax Liability Oil And Gas Property Basis Difference DeferredTaxLiabilityOilAndGasPropertyBasisDifference	35637000	USD
CY2013Q4	gpor	Deferred Tax Liability Oil And Gas Property Basis Difference DeferredTaxLiabilityOilAndGasPropertyBasisDifference	72173000	USD
CY2011	gpor	Gas Sales GasSales	3838000	USD
CY2012Q4	gpor	Deferred Tax Liability Oil And Gas Property Basis Difference DeferredTaxLiabilityOilAndGasPropertyBasisDifference	15049000	USD
CY2011	gpor	Depletion Per Barrel Of Oil Equivalent DepletionPerBarrelOfOilEquivalent	26.56	USD
CY2012	gpor	Depletion Per Barrel Of Oil Equivalent DepletionPerBarrelOfOilEquivalent	35.07	USD
CY2013	gpor	Depletion Per Barrel Of Oil Equivalent DepletionPerBarrelOfOilEquivalent	28.68	USD
CY2013Q4	gpor	Derivative Receivable DerivativeReceivable	4493000	USD
CY2012Q4	gpor	Derivative Receivable DerivativeReceivable	0	USD
CY2012	gpor	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Taxes DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionTaxes	89175000	USD
CY2011	gpor	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Taxes DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionTaxes	124739000	USD
CY2013	gpor	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Taxes DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionTaxes	78647000	USD
CY2012Q4	gpor	Employment Agreement Notice Period Allowed For Termination EmploymentAgreementNoticePeriodAllowedForTermination	P90D
CY2012Q4	gpor	Employment Agreement Subsequent Extension EmploymentAgreementSubsequentExtension	P1Y
CY2012Q4	gpor	Employment Agreement Term EmploymentAgreementTerm	P3Y
CY2012	gpor	Foreign Currency Translation Gain Loss On Investment In Equity Method Investment ForeignCurrencyTranslationGainLossOnInvestmentInEquityMethodInvestment	1355000	USD
CY2011	gpor	Foreign Currency Translation Gain Loss On Investment In Equity Method Investment ForeignCurrencyTranslationGainLossOnInvestmentInEquityMethodInvestment	-855000	USD
CY2013	gpor	Foreign Currency Translation Gain Loss On Investment In Equity Method Investment ForeignCurrencyTranslationGainLossOnInvestmentInEquityMethodInvestment	-12223000	USD
CY2013	gpor	Foreign Currency Translation Gain Loss On Note Receivable Related Party ForeignCurrencyTranslationGainLossOnNoteReceivableRelatedParty	0	USD
CY2011	gpor	Foreign Currency Translation Gain Loss On Note Receivable Related Party ForeignCurrencyTranslationGainLossOnNoteReceivableRelatedParty	-1085000	USD
CY2012	gpor	Foreign Currency Translation Gain Loss On Note Receivable Related Party ForeignCurrencyTranslationGainLossOnNoteReceivableRelatedParty	0	USD
CY2012	gpor	Future Development Costs Estimated To Be Spent In Year One FutureDevelopmentCostsEstimatedToBeSpentInYearOne	135400000	USD
CY2012	gpor	Future Development Costs Estimated To Be Spent In Year Three FutureDevelopmentCostsEstimatedToBeSpentInYearThree	8500000	USD
CY2012	gpor	Future Development Costs Estimated To Be Spent In Year Two FutureDevelopmentCostsEstimatedToBeSpentInYearTwo	68700000	USD
CY2013	gpor	Gas And Oil Area Reserve GasAndOilAreaReserve	243000	acre
CY2013	gpor	Gas Sales GasSales	21015000	USD
CY2012	gpor	Gas Sales GasSales	3225000	USD
CY2012	gpor	Increase Decrease In Asset Retirement Obligation IncreaseDecreaseInAssetRetirementObligation	-2271000	USD
CY2011	gpor	Increase Decrease In Asset Retirement Obligation IncreaseDecreaseInAssetRetirementObligation	-248000	USD
CY2013	gpor	Increase Decrease In Asset Retirement Obligation IncreaseDecreaseInAssetRetirementObligation	-2465000	USD
CY2011	gpor	Interest Cost Capitalized Not Subjectto Amortization InterestCostCapitalizedNotSubjecttoAmortization	0	USD
CY2013	gpor	Interest Cost Capitalized Not Subjectto Amortization InterestCostCapitalizedNotSubjecttoAmortization	5980000	USD
	gpor	Interest Cost Capitalized Not Subjectto Amortization InterestCostCapitalizedNotSubjecttoAmortization	0	USD
CY2012	gpor	Interest Cost Capitalized Not Subjectto Amortization InterestCostCapitalizedNotSubjecttoAmortization	0	USD
CY2013	gpor	Interest Cost Capitalized Undeveloped Properties InterestCostCapitalizedUndevelopedProperties	7132000	USD
CY2013	gpor	Interest Expense Debt Other InterestExpenseDebtOther	11000	USD
CY2011	gpor	Interest Expense Debt Other InterestExpenseDebtOther	29000	USD
CY2012	gpor	Interest Expense Debt Other InterestExpenseDebtOther	57000	USD
CY2013	gpor	Interest Income Note Receivable InterestIncomeNoteReceivable	26000	USD
CY2011	gpor	Interest Income Note Receivable InterestIncomeNoteReceivable	147000	USD
CY2012	gpor	Interest Income Note Receivable InterestIncomeNoteReceivable	2000	USD
CY2013	gpor	Natural Gas Liquids Sales NaturalGasLiquidsSales	17081000	USD
CY2011	gpor	Natural Gas Liquids Sales NaturalGasLiquidsSales	3090000	USD
CY2012	gpor	Natural Gas Liquids Sales NaturalGasLiquidsSales	2668000	USD
CY2013	gpor	Net Changes In Prices Production Costs And Development NetChangesInPricesProductionCostsAndDevelopment	65573000	USD
CY2011	gpor	Net Changes In Prices Production Costs And Development NetChangesInPricesProductionCostsAndDevelopment	136071000	USD
CY2012	gpor	Net Changes In Prices Production Costs And Development NetChangesInPricesProductionCostsAndDevelopment	108941000	USD
CY2011	gpor	Oil And Condensate Sales OilAndCondensateSales	222025000	USD
CY2012	gpor	Oil And Condensate Sales OilAndCondensateSales	242708000	USD
CY2012	gpor	Oil And Gas Property Full Cost Method Gross Period Decrease OilAndGasPropertyFullCostMethodGrossPeriodDecrease	213000000	USD
CY2013Q4	gpor	Other Assets Other OtherAssetsOther	77000	USD
CY2013	gpor	Number Of Financial Institutions NumberOfFinancialInstitutions	4	financial_institution
CY2012	gpor	Number Of Financial Institutions NumberOfFinancialInstitutions	4	financial_institution
CY2013	gpor	Number Of Purchasers NumberOfPurchasers	1	purchaser
CY2013	gpor	Oil And Condensate Sales OilAndCondensateSales	224129000	USD
CY2012Q4	gpor	Other Assets Other OtherAssetsOther		USD
CY2013Q4	gpor	Plugging And Abandonment Escrow Account PluggingAndAbandonmentEscrowAccount	3105000	USD
CY2012Q4	gpor	Plugging And Abandonment Escrow Account PluggingAndAbandonmentEscrowAccount	3113000	USD
CY2012Q4	gpor	Prepaid Drilling Costs PrepaidDrillingCosts	515000	USD
CY2013Q4	gpor	Prepaid Drilling Costs PrepaidDrillingCosts	526000	USD
CY2013	gpor	Production Delivered Under Fixed Price Swaps Percentage ProductionDeliveredUnderFixedPriceSwapsPercentage	0.48
CY2013	gpor	Proved Developed And Undeveloped Reserve Increase Decrease In Reserves ProvedDevelopedAndUndevelopedReserveIncreaseDecreaseInReserves	27805000	MBoe
CY2012	gpor	Proved Developed And Undeveloped Reserve Increase Decrease In Reserves ProvedDevelopedAndUndevelopedReserveIncreaseDecreaseInReserves	6675000	MBoe
CY2012	gpor	Proved Developed And Undeveloped Reserve Revisions Of Previous Estimates ProvedDevelopedAndUndevelopedReserveRevisionsOfPreviousEstimates	442000	MBoe
CY2011	gpor	Results Of Operations Income Tax Expense Current ResultsOfOperationsIncomeTaxExpenseCurrent	282000	USD
CY2013	gpor	Results Of Operations Income Tax Expense Current ResultsOfOperationsIncomeTaxExpenseCurrent	0	USD
CY2012	gpor	Results Of Operations Income Tax Expense Current ResultsOfOperationsIncomeTaxExpenseCurrent	730000	USD
CY2012	gpor	Results Of Operations Income Tax Expense Deferred ResultsOfOperationsIncomeTaxExpenseDeferred	25633000	USD
CY2013	gpor	Results Of Operations Income Tax Expense Deferred ResultsOfOperationsIncomeTaxExpenseDeferred	49447000	USD
CY2011	gpor	Results Of Operations Income Tax Expense Deferred ResultsOfOperationsIncomeTaxExpenseDeferred	-372000	USD
CY2011Q1	gpor	Right Of Refusal Period Allowed RightOfRefusalPeriodAllowed	P6M
CY2013Q4	gpor	Sales Commitment Volume SalesCommitmentVolume	183000
CY2012	gpor	Total Costs Incurred In Oil And Gas Properties Acquisition And Development Activities TotalCostsIncurredInOilAndGasPropertiesAcquisitionAndDevelopmentActivities	755926000	USD
CY2011	gpor	Total Costs Incurred In Oil And Gas Properties Acquisition And Development Activities TotalCostsIncurredInOilAndGasPropertiesAcquisitionAndDevelopmentActivities	265654000	USD
CY2013	gpor	Total Costs Incurred In Oil And Gas Properties Acquisition And Development Activities TotalCostsIncurredInOilAndGasPropertiesAcquisitionAndDevelopmentActivities	820637000	USD
CY2012Q4	gpor	Total Other Assets TotalOtherAssets	394779000	USD
CY2013Q4	gpor	Total Other Assets TotalOtherAssets	458440000	USD
CY2013	gpor	Write Off Of Loan Commitment Fees WriteOffOfLoanCommitmentFees	0	USD
CY2011	gpor	Write Off Of Loan Commitment Fees WriteOffOfLoanCommitmentFees	0	USD
CY2012	gpor	Write Off Of Loan Commitment Fees WriteOffOfLoanCommitmentFees	1143000	USD
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0000874499
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	85217533	shares
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q2	dei	Entity Public Float EntityPublicFloat	3651716766540	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	GULFPORT ENERGY CORP
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes

Files In Submission

Name	View Source	Status
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$GPOR
GULFPORT ENERGY CORP Stock $gpor

2013 Q4 Form 10-K Financial Statement

#000144530514000751 Filed on February 28, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GPOR GULFPORT ENERGY CORP Stock $gpor

2013 Q4 Form 10-K Financial Statement

#000144530514000751 Filed on February 28, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GPOR
GULFPORT ENERGY CORP Stock $gpor