2015 Form 10-K Financial Statement
#000153983816000129 Filed on February 19, 2016
Income Statement
| Concept | 2015 | 2014 Q4 | 2014 Q3 |
|---|---|---|---|
| Revenue | $446.7M | $131.6M | $139.1M |
| YoY Change | -9.88% | 73.35% | 140.74% |
| Cost Of Revenue | $121.7M | $33.60M | $23.60M |
| YoY Change | 33.3% | 214.02% | 168.18% |
| Gross Profit | $325.0M | $98.00M | $115.5M |
| YoY Change | -19.63% | 50.31% | 135.71% |
| Gross Profit Margin | 72.75% | 74.48% | 83.02% |
| Selling, General & Admin | $31.97M | $6.300M | $6.016M |
| YoY Change | 50.32% | 65.79% | 232.38% |
| % of Gross Profit | 9.84% | 6.43% | 5.21% |
| Research & Development | |||
| YoY Change | |||
| % of Gross Profit | |||
| Depreciation & Amortization | $217.7M | $53.60M | $45.37M |
| YoY Change | 28.05% | 127.12% | 160.4% |
| % of Gross Profit | 66.98% | 54.69% | 39.28% |
| Operating Expenses | $1.187B | $60.10M | $75.61M |
| YoY Change | 319.36% | 118.55% | 166.54% |
| Operating Profit | -$740.3M | $37.90M | $63.52M |
| YoY Change | -448.08% | 0.46% | 115.87% |
| Interest Expense | $41.51M | $117.7M | $9.846M |
| YoY Change | 20.28% | -2094.92% | 804.13% |
| % of Operating Profit | 310.56% | 15.5% | |
| Other Income/Expense, Net | -$8.831M | $600.0K | $5.103M |
| YoY Change | -109.57% | -189.09% | |
| Pretax Income | -$749.1M | $156.2M | $68.62M |
| YoY Change | -345.64% | 391.19% | 189.59% |
| Income Tax | -$201.3M | $56.24M | $23.98M |
| % Of Pretax Income | 36.01% | 34.94% | |
| Net Earnings | -$550.6M | $98.67M | $43.74M |
| YoY Change | -384.19% | 390.33% | 199.66% |
| Net Earnings / Revenue | -123.26% | 74.99% | 31.44% |
| Basic Earnings Per Share | -$8.74 | $1.74 | $0.79 |
| Diluted Earnings Per Share | -$8.74 | $1.73 | $0.79 |
| COMMON SHARES | |||
| Basic Shares Outstanding | 63.02M shares | 56.75M shares | 55.15M shares |
| Diluted Shares Outstanding | 63.02M shares | 55.44M shares |
Balance Sheet
| Concept | 2015 | 2014 Q4 | 2014 Q3 |
|---|---|---|---|
| SHORT-TERM ASSETS | |||
| Cash & Short-Term Investments | $20.00M | $30.00M | $41.00M |
| YoY Change | -33.33% | 87.5% | -22.64% |
| Cash & Equivalents | $20.00M | $30.18M | $40.64M |
| Short-Term Investments | |||
| Other Short-Term Assets | $8.000M | $120.2M | $9.284M |
| YoY Change | -93.39% | 8504.65% | 364.2% |
| Inventory | $2.000M | $2.827M | $3.105M |
| Prepaid Expenses | |||
| Receivables | $79.00M | $93.99M | $86.31M |
| Other Receivables | $0.00 | $0.00 | $0.00 |
| Total Short-Term Assets | $109.0M | $251.7M | $143.3M |
| YoY Change | -56.75% | 306.2% | 55.86% |
| LONG-TERM ASSETS | |||
| Property, Plant & Equipment | $2.598B | $2.792B | $2.626B |
| YoY Change | -6.95% | 93.03% | 92.94% |
| Goodwill | |||
| YoY Change | |||
| Intangibles | |||
| YoY Change | |||
| Long-Term Investments | |||
| YoY Change | |||
| Other Assets | $44.00M | $50.03M | $51.14M |
| YoY Change | -15.38% | 282.16% | 314.62% |
| Total Long-Term Assets | $2.642B | $2.844B | $2.677B |
| YoY Change | -7.07% | 94.83% | 94.86% |
| TOTAL ASSETS | |||
| Total Short-Term Assets | $109.0M | $251.7M | $143.3M |
| Total Long-Term Assets | $2.642B | $2.844B | $2.677B |
| Total Assets | $2.751B | $3.095B | $2.821B |
| YoY Change | -11.11% | 103.43% | 92.41% |
| SHORT-TERM LIABILITIES | |||
| YoY Change | |||
| Accounts Payable | $20.00M | $26.00M | $8.000M |
| YoY Change | -23.08% | 766.67% | -66.67% |
| Accrued Expenses | $104.0M | $171.0M | $169.0M |
| YoY Change | -35.0% | 56.88% | 122.37% |
| Deferred Revenue | |||
| YoY Change | |||
| Short-Term Debt | $0.00 | $0.00 | $0.00 |
| YoY Change | |||
| Long-Term Debt Due | |||
| YoY Change | |||
| Total Short-Term Liabilities | $141.0M | $266.7M | $196.3M |
| YoY Change | -47.19% | 119.86% | 79.34% |
| LONG-TERM LIABILITIES | |||
| Long-Term Debt | $488.0M | $673.5M | $590.0M |
| YoY Change | -27.6% | 46.41% | 31.09% |
| Other Long-Term Liabilities | $13.00M | $8.000M | $8.000M |
| YoY Change | 62.5% | 166.67% | 166.67% |
| Total Long-Term Liabilities | $501.0M | $673.5M | $590.0M |
| YoY Change | -26.54% | 46.41% | 31.09% |
| TOTAL LIABILITIES | |||
| Total Short-Term Liabilities | $141.0M | $266.7M | $196.3M |
| Total Long-Term Liabilities | $501.0M | $673.5M | $590.0M |
| Total Liabilities | $875.0M | $1.110B | $934.7M |
| YoY Change | -34.9% | 64.22% | 45.38% |
| SHAREHOLDERS EQUITY | |||
| Retained Earnings | $196.3M | $97.59M | |
| YoY Change | 7710.11% | -654.17% | |
| Common Stock | |||
| YoY Change | |||
| Preferred Stock | |||
| YoY Change | |||
| Treasury Stock (at cost) | |||
| YoY Change | |||
| Treasury Stock Shares | |||
| Shareholders Equity | $1.876B | $1.751B | $1.652B |
| YoY Change | |||
| Total Liabilities & Shareholders Equity | $2.751B | $3.095B | $2.821B |
| YoY Change | -11.11% | 103.43% | 92.41% |
Cashflow Statement
| Concept | 2015 | 2014 Q4 | 2014 Q3 |
|---|---|---|---|
| OPERATING ACTIVITIES | |||
| Net Income | -$550.6M | $98.67M | $43.74M |
| YoY Change | -384.19% | 390.33% | 199.66% |
| Depreciation, Depletion And Amortization | $217.7M | $53.60M | $45.37M |
| YoY Change | 28.05% | 127.12% | 160.4% |
| Cash From Operating Activities | $416.5M | $104.4M | $92.30M |
| YoY Change | 16.86% | 62.62% | 120.81% |
| INVESTING ACTIVITIES | |||
| Capital Expenditures | -$902.1M | -$192.4M | -$731.5M |
| YoY Change | -37.68% | 74.91% | 5.78% |
| Acquisitions | |||
| YoY Change | |||
| Other Investing Activities | $0.00 | -$600.0K | -$33.80M |
| YoY Change | -100.0% | ||
| Cash From Investing Activities | -$895.1M | -$192.9M | -$765.5M |
| YoY Change | -39.6% | 75.52% | 10.7% |
| FINANCING ACTIVITIES | |||
| Cash Dividend Paid | |||
| YoY Change | |||
| Common Stock Issuance & Retirement, Net | $650.7M | ||
| YoY Change | -29.92% | ||
| Debt Paid & Issued, Net | |||
| YoY Change | |||
| Cash From Financing Activities | $468.5M | 78.00M | 676.8M |
| YoY Change | -58.91% | 839.76% | 9.0% |
| NET CHANGE | |||
| Cash From Operating Activities | 416.5M | 104.4M | 92.30M |
| Cash From Investing Activities | -895.1M | -192.9M | -765.5M |
| Cash From Financing Activities | $468.5M | 78.00M | 676.8M |
| Net Change In Cash | $468.5M | -10.50M | 3.600M |
| YoY Change | -58.91% | -71.93% | -112.5% |
| FREE CASH FLOW | |||
| Cash From Operating Activities | $416.5M | $104.4M | $92.30M |
| Capital Expenditures | -$902.1M | -$192.4M | -$731.5M |
| Free Cash Flow | $1.319B | $296.8M | $823.8M |
| YoY Change | -26.91% | 70.38% | 12.34% |
Facts In Submission
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2 | well |
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Oiland Gas Acquisition Numberof Existing Horizontal Wells
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Oiland Gas Acquisition Numberof Existing Vertical Wells
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| CY2014 | fang |
Oiland Gas Acquisition Numberof Horizontal Proved Undeveloped Reserves
OilandGasAcquisitionNumberofHorizontalProvedUndevelopedReserves
|
0 | well |
| CY2015 | fang |
Oiland Gas Acquisition Numberof Horizontal Proved Undeveloped Reserves
OilandGasAcquisitionNumberofHorizontalProvedUndevelopedReserves
|
0 | well |
| CY2015 | fang |
Oiland Gas Acquisition Numberof Vertical Wells Additional Interest Acquired
OilandGasAcquisitionNumberofVerticalWellsAdditionalInterestAcquired
|
3 | well |
| CY2013 | fang |
Oiland Gas Property Lease Operating Expense Including Related Party
OilandGasPropertyLeaseOperatingExpenseIncludingRelatedParty
|
21157000 | USD |
| CY2014 | fang |
Oiland Gas Property Lease Operating Expense Including Related Party
OilandGasPropertyLeaseOperatingExpenseIncludingRelatedParty
|
55384000 | USD |
| CY2015 | fang |
Oiland Gas Property Lease Operating Expense Including Related Party
OilandGasPropertyLeaseOperatingExpenseIncludingRelatedParty
|
82625000 | USD |
| CY2015 | fang |
Operating Loss Carryforward Limitationson Use
OperatingLossCarryforwardLimitationsonUse
|
0.50 | |
| CY2014Q4 | fang |
Other Assetsand Derivative Assets Noncurrent
OtherAssetsandDerivativeAssetsNoncurrent
|
51963000 | USD |
| CY2015Q4 | fang |
Other Assetsand Derivative Assets Noncurrent
OtherAssetsandDerivativeAssetsNoncurrent
|
52042000 | USD |
| CY2013 | fang |
Other Income Intercompany
OtherIncomeIntercompany
|
1077000 | USD |
| CY2014 | fang |
Other Income Intercompany
OtherIncomeIntercompany
|
121000 | USD |
| CY2015 | fang |
Other Income Intercompany
OtherIncomeIntercompany
|
161000 | USD |
| CY2013 | fang |
Other Nonoperating Income Including Related Party
OtherNonoperatingIncomeIncludingRelatedParty
|
0 | USD |
| CY2014 | fang |
Other Nonoperating Income Including Related Party
OtherNonoperatingIncomeIncludingRelatedParty
|
556000 | USD |
| CY2015 | fang |
Other Nonoperating Income Including Related Party
OtherNonoperatingIncomeIncludingRelatedParty
|
567000 | USD |
| CY2013 | fang |
Other Nonoperating Income Related Party
OtherNonoperatingIncomeRelatedParty
|
1077000 | USD |
| CY2014 | fang |
Other Nonoperating Income Related Party
OtherNonoperatingIncomeRelatedParty
|
121000 | USD |
| CY2015 | fang |
Other Nonoperating Income Related Party
OtherNonoperatingIncomeRelatedParty
|
161000 | USD |
| CY2014 | fang |
Paymentsof Distributionsto Parent
PaymentsofDistributionstoParent
|
0 | USD |
| CY2015 | fang |
Paymentsof Distributionsto Parent
PaymentsofDistributionstoParent
|
0 | USD |
| CY2013 | fang |
Paymentsto Acquire Mineral Interestsand Oiland Gas Property
PaymentstoAcquireMineralInterestsandOilandGasProperty
|
195893000 | USD |
| CY2014 | fang |
Paymentsto Acquire Mineral Interestsand Oiland Gas Property
PaymentstoAcquireMineralInterestsandOilandGasProperty
|
845826000 | USD |
| CY2015 | fang |
Paymentsto Acquire Mineral Interestsand Oiland Gas Property
PaymentstoAcquireMineralInterestsandOilandGasProperty
|
437455000 | USD |
| CY2013 | fang |
Paymentsto Acquire Oiland Gas Property Related Party
PaymentstoAcquireOilandGasPropertyRelatedParty
|
18550000 | USD |
| CY2014 | fang |
Paymentsto Acquire Oiland Gas Property Related Party
PaymentstoAcquireOilandGasPropertyRelatedParty
|
0 | USD |
| CY2015 | fang |
Paymentsto Acquire Oiland Gas Property Related Party
PaymentstoAcquireOilandGasPropertyRelatedParty
|
0 | USD |
| CY2013 | fang |
Paymentsto Exploreand Develop Oiland Gas Properties Including Related Party
PaymentstoExploreandDevelopOilandGasPropertiesIncludingRelatedParty
|
292586000 | USD |
| CY2014 | fang |
Paymentsto Exploreand Develop Oiland Gas Properties Including Related Party
PaymentstoExploreandDevelopOilandGasPropertiesIncludingRelatedParty
|
498339000 | USD |
| CY2015 | fang |
Paymentsto Exploreand Develop Oiland Gas Properties Including Related Party
PaymentstoExploreandDevelopOilandGasPropertiesIncludingRelatedParty
|
419512000 | USD |
| CY2013 | fang |
Paymentsto Exploreand Develop Oiland Gas Properties Related Party
PaymentstoExploreandDevelopOilandGasPropertiesRelatedParty
|
13777000 | USD |
| CY2014 | fang |
Paymentsto Exploreand Develop Oiland Gas Properties Related Party
PaymentstoExploreandDevelopOilandGasPropertiesRelatedParty
|
3631000 | USD |
| CY2015 | fang |
Paymentsto Exploreand Develop Oiland Gas Properties Related Party
PaymentstoExploreandDevelopOilandGasPropertiesRelatedParty
|
271000 | USD |
| CY2014Q4 | fang |
Pipelineand Gas Gathering Assets
PipelineandGasGatheringAssets
|
7174000 | USD |
| CY2015Q4 | fang |
Pipelineand Gas Gathering Assets
PipelineandGasGatheringAssets
|
7174000 | USD |
| CY2014Q4 | fang |
Pipelineand Gas Gathering Assets Net
PipelineandGasGatheringAssetsNet
|
7174000 | USD |
| CY2015Q4 | fang |
Pipelineand Gas Gathering Assets Net
PipelineandGasGatheringAssetsNet
|
7174000 | USD |
| CY2014Q4 | fang |
Prepaid Drilling Liability Current
PrepaidDrillingLiabilityCurrent
|
3758000 | USD |
| CY2015Q4 | fang |
Prepaid Drilling Liability Current
PrepaidDrillingLiabilityCurrent
|
12683000 | USD |
| CY2014 | fang |
Proceedsfrom Distributionsfrom Subsidiary
ProceedsfromDistributionsfromSubsidiary
|
0 | USD |
| CY2015 | fang |
Proceedsfrom Distributionsfrom Subsidiary
ProceedsfromDistributionsfromSubsidiary
|
0 | USD |
| CY2013 | fang |
Production Tax Expense Excluding Related Party
ProductionTaxExpenseExcludingRelatedParty
|
12399000 | USD |
| CY2014 | fang |
Production Tax Expense Excluding Related Party
ProductionTaxExpenseExcludingRelatedParty
|
31160000 | USD |
| CY2015 | fang |
Production Tax Expense Excluding Related Party
ProductionTaxExpenseExcludingRelatedParty
|
32837000 | USD |
| CY2013 | fang |
Production Tax Expense Related Party
ProductionTaxExpenseRelatedParty
|
500000 | USD |
| CY2014 | fang |
Production Tax Expense Related Party
ProductionTaxExpenseRelatedParty
|
1478000 | USD |
| CY2015 | fang |
Production Tax Expense Related Party
ProductionTaxExpenseRelatedParty
|
153000 | USD |
| CY2015 | fang |
Proved Undeveloped Reserves Distancefrom Producing Wells
ProvedUndevelopedReservesDistancefromProducingWells
|
1700 | ft |
| CY2015 | fang |
Proved Undeveloped Reserves Downward Revisions
ProvedUndevelopedReservesDownwardRevisions
|
12656000 | Boe |
| CY2015 | fang |
Proved Undeveloped Reserves Extensions Percent Associatedwith Well Locations Morethan One Offset Awayfrom Existing Producing Wells
ProvedUndevelopedReservesExtensionsPercentAssociatedwithWellLocationsMorethanOneOffsetAwayfromExistingProducingWells
|
0.20 | |
| CY2015 | fang |
Proved Undeveloped Reserves Extensionsand Discoveries
ProvedUndevelopedReservesExtensionsandDiscoveries
|
44755000 | Boe |
| CY2015 | fang |
Proved Undeveloped Reserves Horizontal Wells Downgraded Working Interest
ProvedUndevelopedReservesHorizontalWellsDowngradedWorkingInterest
|
22 | well |
| CY2013 | fang |
Proved Undeveloped Reserves Numberof Wells Downgraded
ProvedUndevelopedReservesNumberofWellsDowngraded
|
92 | well |
| CY2014 | fang |
Proved Undeveloped Reserves Numberof Wells Downgraded
ProvedUndevelopedReservesNumberofWellsDowngraded
|
73 | well |
| CY2015 | fang |
Proved Undeveloped Reserves Numberof Wells Downgraded
ProvedUndevelopedReservesNumberofWellsDowngraded
|
89 | well |
| CY2015 | fang |
Proved Undeveloped Reserves Period Increase Decrease
ProvedUndevelopedReservesPeriodIncreaseDecrease
|
18419000 | Boe |
| CY2015 | fang |
Proved Undeveloped Reserves Planned Development Period
ProvedUndevelopedReservesPlannedDevelopmentPeriod
|
P5Y | |
| CY2015 | fang |
Proved Undeveloped Reserves Reclassifications
ProvedUndevelopedReservesReclassifications
|
14619000 | Boe |
| CY2015 | fang |
Proved Undeveloped Reserves Revisions
ProvedUndevelopedReservesRevisions
|
-12656000 | Boe |
| CY2015 | fang |
Proved Undeveloped Reserves Undeveloped Reserves Transferredtobe Developed
ProvedUndevelopedReservesUndevelopedReservesTransferredtobeDeveloped
|
-13680000 | Boe |
| CY2015 | fang |
Proved Undeveloped Reserves Vertical Reclassifications
ProvedUndevelopedReservesVerticalReclassifications
|
8607000 | Boe |
| CY2015 | fang |
Proved Undeveloped Reserves Vertical Wells Downgraded Mineral Interest
ProvedUndevelopedReservesVerticalWellsDowngradedMineralInterest
|
22 | well |
| CY2015 | fang |
Proved Undeveloped Reserves Vertical Wells Downgraded Working Interest
ProvedUndevelopedReservesVerticalWellsDowngradedWorkingInterest
|
80 | well |
| CY2013 | fang |
Revenue From Related Parties Liquid Natural Gas Sales Revenue
RevenueFromRelatedPartiesLiquidNaturalGasSalesRevenue
|
4696000 | USD |
| CY2014 | fang |
Revenue From Related Parties Liquid Natural Gas Sales Revenue
RevenueFromRelatedPartiesLiquidNaturalGasSalesRevenue
|
15038000 | USD |
| CY2015 | fang |
Revenue From Related Parties Liquid Natural Gas Sales Revenue
RevenueFromRelatedPartiesLiquidNaturalGasSalesRevenue
|
2544000 | USD |
| CY2013 | fang |
Revenue From Related Parties Natural Gas Sales
RevenueFromRelatedPartiesNaturalGasSales
|
2534000 | USD |
| CY2014 | fang |
Revenue From Related Parties Natural Gas Sales
RevenueFromRelatedPartiesNaturalGasSales
|
9366000 | USD |
| CY2015 | fang |
Revenue From Related Parties Natural Gas Sales
RevenueFromRelatedPartiesNaturalGasSales
|
2640000 | USD |
| CY2014Q4 | us-gaap |
Accounts Payable Related Parties Current
AccountsPayableRelatedPartiesCurrent
|
0 | USD |
| CY2015Q4 | us-gaap |
Accounts Payable Related Parties Current
AccountsPayableRelatedPartiesCurrent
|
217000 | USD |
| CY2014Q4 | us-gaap |
Accounts Payable Trade Current
AccountsPayableTradeCurrent
|
26230000 | USD |
| CY2015Q4 | us-gaap |
Accounts Payable Trade Current
AccountsPayableTradeCurrent
|
20008000 | USD |
| CY2014Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
93993000 | USD |
| CY2015Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
77313000 | USD |
| CY2014Q4 | us-gaap |
Accounts Receivable Related Parties Current
AccountsReceivableRelatedPartiesCurrent
|
4001000 | USD |
| CY2015Q4 | us-gaap |
Accounts Receivable Related Parties Current
AccountsReceivableRelatedPartiesCurrent
|
1591000 | USD |
| CY2013 | us-gaap |
Accretion Of Discount
AccretionOfDiscount
|
57988000 | USD |
| CY2014 | us-gaap |
Accretion Of Discount
AccretionOfDiscount
|
151481000 | USD |
| CY2015 | us-gaap |
Accretion Of Discount
AccretionOfDiscount
|
236716000 | USD |
| CY2014Q4 | us-gaap |
Accumulated Amortization Deferred Finance Costs
AccumulatedAmortizationDeferredFinanceCosts
|
3921000 | USD |
| CY2015Q4 | us-gaap |
Accumulated Amortization Deferred Finance Costs
AccumulatedAmortizationDeferredFinanceCosts
|
6523000 | USD |
| CY2014Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
382144000 | USD |
| CY2015Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
1413543000 | USD |
| CY2014Q4 | us-gaap |
Additional Paid In Capital
AdditionalPaidInCapital
|
1554174000 | USD |
| CY2015Q4 | us-gaap |
Additional Paid In Capital
AdditionalPaidInCapital
|
2229664000 | USD |
| CY2013 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
2724000 | USD |
| CY2014 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
12152000 | USD |
| CY2015 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
20645000 | USD |
| CY2013 | us-gaap |
Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation
AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation
|
749000 | USD |
| CY2014 | us-gaap |
Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation
AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation
|
-749000 | USD |
| CY2013 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
1752000 | USD |
| CY2014 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
9816000 | USD |
| CY2015 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
18529000 | USD |
| CY2014Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
0 | USD |
| CY2015Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
0 | USD |
| CY2013Q4 | us-gaap |
Amortization Expense Per Physical Unit Of Production
AmortizationExpensePerPhysicalUnitOfProduction
|
24.63 | |
| CY2014Q4 | us-gaap |
Amortization Expense Per Physical Unit Of Production
AmortizationExpensePerPhysicalUnitOfProduction
|
23.79 | |
| CY2015Q4 | us-gaap |
Amortization Expense Per Physical Unit Of Production
AmortizationExpensePerPhysicalUnitOfProduction
|
17.84 | |
| CY2013 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
1018000 | USD |
| CY2014 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
2125000 | USD |
| CY2015 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
2601000 | USD |
| CY2015 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
101000 | shares |
| CY2012Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
2145000 | USD |
| CY2013Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
3029000 | USD |
| CY2014Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
8486000 | USD |
| CY2015Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
12711000 | USD |
| CY2013 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
201000 | USD |
| CY2014 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
467000 | USD |
| CY2015 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
833000 | USD |
| CY2013Q4 | us-gaap |
Asset Retirement Obligation Current
AssetRetirementObligationCurrent
|
40000 | USD |
| CY2014Q4 | us-gaap |
Asset Retirement Obligation Current
AssetRetirementObligationCurrent
|
39000 | USD |
| CY2015Q4 | us-gaap |
Asset Retirement Obligation Current
AssetRetirementObligationCurrent
|
193000 | USD |
| CY2013 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
226000 | USD |
| CY2014 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
703000 | USD |
| CY2015 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
594000 | USD |
| CY2013 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
14000 | USD |
| CY2014 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
27000 | USD |
| CY2015 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
292000 | USD |
| CY2013 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
0 | USD |
| CY2014 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
588000 | USD |
| CY2015 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
-69000 | USD |
| CY2013Q4 | us-gaap |
Asset Retirement Obligations Noncurrent
AssetRetirementObligationsNoncurrent
|
2989000 | USD |
| CY2014Q4 | us-gaap |
Asset Retirement Obligations Noncurrent
AssetRetirementObligationsNoncurrent
|
8447000 | USD |
| CY2015Q4 | us-gaap |
Asset Retirement Obligations Noncurrent
AssetRetirementObligationsNoncurrent
|
12518000 | USD |
| CY2014Q4 | us-gaap |
Assets
Assets
|
3095481000 | USD |
| CY2015Q4 | us-gaap |
Assets
Assets
|
2758412000 | USD |
| CY2014Q4 | us-gaap |
Assets Current
AssetsCurrent
|
251711000 | USD |
| CY2015Q4 | us-gaap |
Assets Current
AssetsCurrent
|
108745000 | USD |
| CY2014Q4 | us-gaap |
Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities
CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities
|
296317000 | USD |
| CY2015Q4 | us-gaap |
Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities
CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities
|
512144000 | USD |
| CY2014Q4 | us-gaap |
Capitalized Costs Of Unproved Properties Excluded From Amortization Cumulative
CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative
|
773520000 | USD |
| CY2015Q4 | us-gaap |
Capitalized Costs Of Unproved Properties Excluded From Amortization Cumulative
CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative
|
1106816000 | USD |
| CY2014Q4 | us-gaap |
Capitalized Costs Oil And Gas Producing Activities Gross
CapitalizedCostsOilAndGasProducingActivitiesGross
|
3118597000 | USD |
| CY2015Q4 | us-gaap |
Capitalized Costs Oil And Gas Producing Activities Gross
CapitalizedCostsOilAndGasProducingActivitiesGross
|
3955373000 | USD |
| CY2014Q4 | us-gaap |
Capitalized Costs Oil And Gas Producing Activities Net
CapitalizedCostsOilAndGasProducingActivitiesNet
|
2739116000 | USD |
| CY2015Q4 | us-gaap |
Capitalized Costs Oil And Gas Producing Activities Net
CapitalizedCostsOilAndGasProducingActivitiesNet
|
2545267000 | USD |
| CY2014Q4 | us-gaap |
Capitalized Costs Proved Properties
CapitalizedCostsProvedProperties
|
2345077000 | USD |
| CY2015Q4 | us-gaap |
Capitalized Costs Proved Properties
CapitalizedCostsProvedProperties
|
2848557000 | USD |
| CY2014Q4 | us-gaap |
Capitalized Costs Unproved Properties
CapitalizedCostsUnprovedProperties
|
773520000 | USD |
| CY2015Q4 | us-gaap |
Capitalized Costs Unproved Properties
CapitalizedCostsUnprovedProperties
|
1106816000 | USD |
| CY2012Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
26358000 | USD |
| CY2013Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
15555000 | USD |
| CY2014Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
30183000 | USD |
| CY2015Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
20115000 | USD |
| CY2013 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
-10803000 | USD |
| CY2014 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
14628000 | USD |
| CY2015 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
-10068000 | USD |
| CY2014Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
| CY2015Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
| CY2014Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.01 | |
| CY2015Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.01 | |
| CY2014Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
100000000 | shares |
| CY2015Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
100000000 | shares |
| CY2014Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
56887583 | shares |
| CY2015Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
66797041 | shares |
| CY2014Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
56887583 | shares |
| CY2015Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
66797041 | shares |
| CY2014Q4 | us-gaap |
Common Stock Value Outstanding
CommonStockValueOutstanding
|
569000 | USD |
| CY2015Q4 | us-gaap |
Common Stock Value Outstanding
CommonStockValueOutstanding
|
668000 | USD |
| CY2013 | us-gaap |
Costs Incurred Acquisition Of Oil And Gas Properties
CostsIncurredAcquisitionOfOilAndGasProperties
|
950618000 | USD |
| CY2014 | us-gaap |
Costs Incurred Acquisition Of Oil And Gas Properties
CostsIncurredAcquisitionOfOilAndGasProperties
|
1470237000 | USD |
| CY2015 | us-gaap |
Costs Incurred Acquisition Of Oil And Gas Properties
CostsIncurredAcquisitionOfOilAndGasProperties
|
878287000 | USD |
| CY2013 | us-gaap |
Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves
CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves
|
339130000 | USD |
| CY2014 | us-gaap |
Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves
CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves
|
302234000 | USD |
| CY2015 | us-gaap |
Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves
CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves
|
64340000 | USD |
| CY2013 | us-gaap |
Costs Incurred Acquisition Of Unproved Oil And Gas Properties
CostsIncurredAcquisitionOfUnprovedOilAndGasProperties
|
279402000 | USD |
| CY2014 | us-gaap |
Costs Incurred Acquisition Of Unproved Oil And Gas Properties
CostsIncurredAcquisitionOfUnprovedOilAndGasProperties
|
601188000 | USD |
| CY2015 | us-gaap |
Costs Incurred Acquisition Of Unproved Oil And Gas Properties
CostsIncurredAcquisitionOfUnprovedOilAndGasProperties
|
448638000 | USD |
| CY2013 | us-gaap |
Costs Incurred Asset Retirement Obligation Incurred
CostsIncurredAssetRetirementObligationIncurred
|
697000 | USD |
| CY2014 | us-gaap |
Costs Incurred Asset Retirement Obligation Incurred
CostsIncurredAssetRetirementObligationIncurred
|
4962000 | USD |
| CY2015 | us-gaap |
Costs Incurred Asset Retirement Obligation Incurred
CostsIncurredAssetRetirementObligationIncurred
|
3458000 | USD |
| CY2013 | us-gaap |
Costs Incurred Development Costs
CostsIncurredDevelopmentCosts
|
88460000 | USD |
| CY2014 | us-gaap |
Costs Incurred Development Costs
CostsIncurredDevelopmentCosts
|
86097000 | USD |
| CY2015 | us-gaap |
Costs Incurred Development Costs
CostsIncurredDevelopmentCosts
|
42749000 | USD |
| CY2013 | us-gaap |
Costs Incurred Exploration Costs
CostsIncurredExplorationCosts
|
242929000 | USD |
| CY2014 | us-gaap |
Costs Incurred Exploration Costs
CostsIncurredExplorationCosts
|
475756000 | USD |
| CY2015 | us-gaap |
Costs Incurred Exploration Costs
CostsIncurredExplorationCosts
|
319102000 | USD |
| CY2013 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
191000 | USD |
| CY2014 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
0 | USD |
| CY2015 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
-33000 | USD |
| CY2013 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
191000 | USD |
| CY2014 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
0 | USD |
| CY2015 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
235000 | USD |
| CY2013 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
0 | USD |
| CY2014 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
0 | USD |
| CY2015 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
268000 | USD |
| CY2013 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
30768000 | USD |
| CY2014 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
106107000 | USD |
| CY2015 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
-198729000 | USD |
| CY2014Q4 | us-gaap |
Deferred Finance Costs Net
DeferredFinanceCostsNet
|
13802000 | USD |
| CY2015Q4 | us-gaap |
Deferred Finance Costs Net
DeferredFinanceCostsNet
|
18249000 | USD |
| CY2013 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
31563000 | USD |
| CY2014 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
108985000 | USD |
| CY2015 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-201545000 | USD |
| CY2013 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
795000 | USD |
| CY2014 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
2878000 | USD |
| CY2015 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
-2816000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Derivative Instruments
DeferredTaxAssetsDerivativeInstruments
|
0 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Derivative Instruments
DeferredTaxAssetsDerivativeInstruments
|
0 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Gross Current
DeferredTaxAssetsGrossCurrent
|
1950000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Gross Current
DeferredTaxAssetsGrossCurrent
|
2658000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Gross Noncurrent
DeferredTaxAssetsGrossNoncurrent
|
52180000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Gross Noncurrent
DeferredTaxAssetsGrossNoncurrent
|
91041000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Net Current
DeferredTaxAssetsNetCurrent
|
1950000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Net Current
DeferredTaxAssetsNetCurrent
|
1640000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Net Noncurrent
DeferredTaxAssetsNetNoncurrent
|
52180000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Net Noncurrent
DeferredTaxAssetsNetNoncurrent
|
31003000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
49627000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
82635000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax
DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax
|
33000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax
DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax
|
0 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
|
2520000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
|
3873000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
61056000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance Current
DeferredTaxAssetsValuationAllowanceCurrent
|
0 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance Current
DeferredTaxAssetsValuationAllowanceCurrent
|
1018000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance Noncurrent
DeferredTaxAssetsValuationAllowanceNoncurrent
|
0 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance Noncurrent
DeferredTaxAssetsValuationAllowanceNoncurrent
|
60038000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
201545000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
0 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Liabilities Current
DeferredTaxLiabilitiesCurrent
|
39953000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Liabilities Current
DeferredTaxLiabilitiesCurrent
|
0 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Liabilities Derivatives
DeferredTaxLiabilitiesDerivatives
|
41903000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Liabilities Derivatives
DeferredTaxLiabilitiesDerivatives
|
1640000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Liabilities Gross Current
DeferredTaxLiabilitiesGrossCurrent
|
41903000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Liabilities Gross Current
DeferredTaxLiabilitiesGrossCurrent
|
1640000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Liabilities Gross Noncurrent
DeferredTaxLiabilitiesGrossNoncurrent
|
213772000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Liabilities Gross Noncurrent
DeferredTaxLiabilitiesGrossNoncurrent
|
31003000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Liabilities Noncurrent
DeferredTaxLiabilitiesNoncurrent
|
161592000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Liabilities Noncurrent
DeferredTaxLiabilitiesNoncurrent
|
0 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
0 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
0 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
213772000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
31003000 | USD |
| CY2013 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
262000 | USD |
| CY2014 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
428000 | USD |
| CY2015 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
1395000 | USD |
| CY2015 | us-gaap |
Defined Contribution Plan Employer Matching Contribution Percent
DefinedContributionPlanEmployerMatchingContributionPercent
|
0.06 | |
| CY2015 | us-gaap |
Defined Contribution Plan Maximum Annual Contributions Per Employee Percent
DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
|
1.00 | |
| CY2013 | us-gaap |
Depreciation
Depreciation
|
776000 | USD |
| CY2014 | us-gaap |
Depreciation
Depreciation
|
1331000 | USD |
| CY2015 | us-gaap |
Depreciation
Depreciation
|
1641000 | USD |
| CY2013 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
66597000 | USD |
| CY2014 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
170005000 | USD |
| CY2015 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
217697000 | USD |
| CY2014Q4 | us-gaap |
Derivative Asset Fair Value Gross Liability
DerivativeAssetFairValueGrossLiability
|
0 | USD |
| CY2015Q4 | us-gaap |
Derivative Asset Fair Value Gross Liability
DerivativeAssetFairValueGrossLiability
|
0 | USD |
| CY2014Q4 | us-gaap |
Derivative Assets
DerivativeAssets
|
117541000 | USD |
| CY2015Q4 | us-gaap |
Derivative Assets
DerivativeAssets
|
4623000 | USD |
| CY2014Q4 | us-gaap |
Derivative Assets Current
DerivativeAssetsCurrent
|
115607000 | USD |
| CY2015Q4 | us-gaap |
Derivative Assets Current
DerivativeAssetsCurrent
|
4623000 | USD |
| CY2014Q4 | us-gaap |
Derivative Assets Noncurrent
DerivativeAssetsNoncurrent
|
1934000 | USD |
| CY2015Q4 | us-gaap |
Derivative Assets Noncurrent
DerivativeAssetsNoncurrent
|
0 | USD |
| CY2014Q4 | us-gaap |
Derivative Fair Value Of Derivative Asset
DerivativeFairValueOfDerivativeAsset
|
117541000 | USD |
| CY2015Q4 | us-gaap |
Derivative Fair Value Of Derivative Asset
DerivativeFairValueOfDerivativeAsset
|
4623000 | USD |
| CY2014Q4 | us-gaap |
Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral
DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
|
117541000 | USD |
| CY2015Q4 | us-gaap |
Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral
DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
|
4623000 | USD |
| CY2013 | us-gaap |
Derivative Gain Loss On Derivative Net
DerivativeGainLossOnDerivativeNet
|
-1872000 | USD |
| CY2014 | us-gaap |
Derivative Gain Loss On Derivative Net
DerivativeGainLossOnDerivativeNet
|
127539000 | USD |
| CY2015 | us-gaap |
Derivative Gain Loss On Derivative Net
DerivativeGainLossOnDerivativeNet
|
31951000 | USD |
| CY2013 | us-gaap |
Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
|
5346000 | USD |
| CY2014 | us-gaap |
Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
|
117109000 | USD |
| CY2015 | us-gaap |
Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
|
-112918000 | USD |
| CY2013 | us-gaap |
Dilutive Securities
DilutiveSecurities
|
0 | USD |
| CY2014 | us-gaap |
Dilutive Securities
DilutiveSecurities
|
0 | USD |
| CY2015 | us-gaap |
Dilutive Securities
DilutiveSecurities
|
0 | USD |
| CY2013 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.30 | |
| CY2014Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.49 | |
| CY2014Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.55 | |
| CY2014Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.79 | |
| CY2014Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.74 | |
| CY2014 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
3.67 | |
| CY2015Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.10 | |
| CY2015Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
-3.45 | |
| CY2015Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
-2.40 | |
| CY2015Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
-2.80 | |
| CY2015 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
-8.74 | |
| CY2013 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.29 | |
| CY2014Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.48 | |
| CY2014Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.54 | |
| CY2014Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.79 | |
| CY2014Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.73 | |
| CY2014 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
3.64 | |
| CY2015Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.10 | |
| CY2015Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
-3.45 | |
| CY2015Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
-2.40 | |
| CY2015Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
-2.80 | |
| CY2015 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
-8.74 | |
| CY2013 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | |
| CY2014 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | |
| CY2015 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | |
| CY2013 | us-gaap |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
|
972000 | USD |
| CY2014 | us-gaap |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
|
4437000 | USD |
| CY2015 | us-gaap |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
|
6043000 | USD |
| CY2015Q4 | us-gaap |
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
|
100000 | USD |
| CY2013 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
704000 | USD |
| CY2014 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
0 | USD |
| CY2015 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
0 | USD |
| CY2014Q4 | us-gaap |
Equity Method Investment Aggregate Cost
EquityMethodInvestmentAggregateCost
|
5000000 | USD |
| CY2013 | us-gaap |
Equity Method Investment Other Than Temporary Impairment
EquityMethodInvestmentOtherThanTemporaryImpairment
|
0 | USD |
| CY2014 | us-gaap |
Equity Method Investment Other Than Temporary Impairment
EquityMethodInvestmentOtherThanTemporaryImpairment
|
0 | USD |
| CY2015 | us-gaap |
Equity Method Investment Other Than Temporary Impairment
EquityMethodInvestmentOtherThanTemporaryImpairment
|
0 | USD |
| CY2015Q4 | us-gaap |
Equity Method Investment Ownership Percentage
EquityMethodInvestmentOwnershipPercentage
|
0.250 | |
| CY2015Q4 | us-gaap |
Escrow Deposit
EscrowDeposit
|
500000 | USD |
| CY2013 | us-gaap |
Excess Tax Benefit From Share Based Compensation Financing Activities
ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
|
749000 | USD |
| CY2014 | us-gaap |
Excess Tax Benefit From Share Based Compensation Financing Activities
ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
|
0 | USD |
| CY2015 | us-gaap |
Excess Tax Benefit From Share Based Compensation Financing Activities
ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
|
0 | USD |
| CY2013 | us-gaap |
Excess Tax Benefit From Share Based Compensation Operating Activities
ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
|
749000 | USD |
| CY2014 | us-gaap |
Excess Tax Benefit From Share Based Compensation Operating Activities
ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
|
0 | USD |
| CY2015 | us-gaap |
Excess Tax Benefit From Share Based Compensation Operating Activities
ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
|
0 | USD |
| CY2013 | us-gaap |
Extensions Discoveries Additions And Improved Recovery Less Related Costs
ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts
|
552450000 | USD |
| CY2014 | us-gaap |
Extensions Discoveries Additions And Improved Recovery Less Related Costs
ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts
|
1135293000 | USD |
| CY2015 | us-gaap |
Extensions Discoveries Additions And Improved Recovery Less Related Costs
ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts
|
629149000 | USD |
| CY2013Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows
|
4604241000 | USD |
| CY2014Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows
|
7695368000 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows
|
5377783000 | USD |
| CY2013Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
|
517075000 | USD |
| CY2014Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
|
602438000 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
|
548239000 | USD |
| CY2013Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense
FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense
|
674260000 | USD |
| CY2014Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense
FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense
|
672380000 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense
FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense
|
28233000 | USD |
| CY2013Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows
|
2287615000 | USD |
| CY2014Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows
|
4607212000 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows
|
3159081000 | USD |
| CY2013Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts
|
806895000 | USD |
| CY2013 | us-gaap |
Gain Loss On Price Risk Derivative Instruments Not Designated As Hedging Instruments
GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments
|
5346000 | USD |
| CY2014 | us-gaap |
Gain Loss On Price Risk Derivative Instruments Not Designated As Hedging Instruments
GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments
|
117109000 | USD |
| CY2015 | us-gaap |
Gain Loss On Price Risk Derivative Instruments Not Designated As Hedging Instruments
GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments
|
-112918000 | USD |
| CY2014Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts
|
1278487000 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts
|
1279101000 | USD |
| CY2013Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows
|
1311976000 | USD |
| CY2014Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows
|
2561988000 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows
|
1740948000 | USD |
| CY2013 | us-gaap |
Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
|
39000 | USD |
| CY2014 | us-gaap |
Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
|
-1396000 | USD |
| CY2015 | us-gaap |
Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
|
-668000 | USD |
| CY2013 | us-gaap |
Gas Gathering Transportation Marketing And Processing Costs
GasGatheringTransportationMarketingAndProcessingCosts
|
237000 | USD |
| CY2014 | us-gaap |
Gas Gathering Transportation Marketing And Processing Costs
GasGatheringTransportationMarketingAndProcessingCosts
|
618000 | USD |
| CY2015 | us-gaap |
Gas Gathering Transportation Marketing And Processing Costs
GasGatheringTransportationMarketingAndProcessingCosts
|
5122000 | USD |
| CY2013 | us-gaap |
Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
|
0 | USD |
| CY2014 | us-gaap |
Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
|
0 | USD |
| CY2015 | us-gaap |
Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
|
0 | USD |
| CY2013 | us-gaap |
Impairment Of Oil And Gas Properties
ImpairmentOfOilAndGasProperties
|
0 | USD |
| CY2014 | us-gaap |
Impairment Of Oil And Gas Properties
ImpairmentOfOilAndGasProperties
|
0 | USD |
| CY2015 | us-gaap |
Impairment Of Oil And Gas Properties
ImpairmentOfOilAndGasProperties
|
814798000 | USD |
| CY2013 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
86341000 | USD |
| CY2014 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
304956000 | USD |
| CY2015 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
-749100000 | USD |
| CY2013 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
31754000 | USD |
| CY2014Q1 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
13601000 | USD |
| CY2014Q2 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
15163000 | USD |
| CY2014Q3 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
23978000 | USD |
| CY2014Q4 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
56243000 | USD |
| CY2014 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
108985000 | USD |
| CY2015Q1 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
3370000 | USD |
| CY2015Q2 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-116732000 | USD |
| CY2015Q3 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-81461000 | USD |
| CY2015Q4 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-6487000 | USD |
| CY2015 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-201310000 | USD |
| CY2013 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
0 | USD |
| CY2014 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
0 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
61056000 | USD |
| CY2013 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
30231000 | USD |
| CY2014 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
105959000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
-263179000 | USD |
| CY2013 | us-gaap |
Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
|
1006000 | USD |
| CY2014 | us-gaap |
Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
|
148000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
|
4506000 | USD |
| CY2013 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
517000 | USD |
| CY2014 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
2878000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
-2548000 | USD |
| CY2013 | us-gaap |
Income Taxes Paid
IncomeTaxesPaid
|
0 | USD |
| CY2014 | us-gaap |
Income Taxes Paid
IncomeTaxesPaid
|
0 | USD |
| CY2015 | us-gaap |
Income Taxes Paid
IncomeTaxesPaid
|
267000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
|
20588000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
|
6829000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
|
802000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Accounts Payable Related Parties
IncreaseDecreaseInAccountsPayableRelatedParties
|
-128000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Accounts Payable Related Parties
IncreaseDecreaseInAccountsPayableRelatedParties
|
-17000 | USD |
| CY2014 | us-gaap |
Interest Paid Net
InterestPaidNet
|
31621000 | USD |
| CY2015 | us-gaap |
Interest Paid Net
InterestPaidNet
|
38758000 | USD |
| CY2014Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
8861000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Accounts Payable Related Parties
IncreaseDecreaseInAccountsPayableRelatedParties
|
218000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
19973000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
39442000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
-8998000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Accounts Receivable Related Parties
IncreaseDecreaseInAccountsReceivableRelatedParties
|
532000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Accounts Receivable Related Parties
IncreaseDecreaseInAccountsReceivableRelatedParties
|
2699000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Accounts Receivable Related Parties
IncreaseDecreaseInAccountsReceivableRelatedParties
|
-2149000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Estimated Future Development Costs
IncreaseDecreaseInEstimatedFutureDevelopmentCosts
|
-5822000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Estimated Future Development Costs
IncreaseDecreaseInEstimatedFutureDevelopmentCosts
|
-4877000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Estimated Future Development Costs
IncreaseDecreaseInEstimatedFutureDevelopmentCosts
|
38638000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves
IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves
|
-168570000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves
IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves
|
-12326000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves
IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves
|
268963000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Interest Payable Net
IncreaseDecreaseInInterestPayableNet
|
0 | USD |
| CY2014 | us-gaap |
Increase Decrease In Interest Payable Net
IncreaseDecreaseInInterestPayableNet
|
3473000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Interest Payable Net
IncreaseDecreaseInInterestPayableNet
|
-255000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
-554000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
-915000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
-224000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
271000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
4601000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
1310000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Restricted Cash For Operating Activities
IncreaseDecreaseInRestrictedCashForOperatingActivities
|
0 | USD |
| CY2014 | us-gaap |
Increase Decrease In Restricted Cash For Operating Activities
IncreaseDecreaseInRestrictedCashForOperatingActivities
|
500000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Restricted Cash For Operating Activities
IncreaseDecreaseInRestrictedCashForOperatingActivities
|
0 | USD |
| CY2013 | us-gaap |
Increase Due To Purchases Of Minerals In Place
IncreaseDueToPurchasesOfMineralsInPlace
|
305109000 | USD |
| CY2014 | us-gaap |
Increase Due To Purchases Of Minerals In Place
IncreaseDueToPurchasesOfMineralsInPlace
|
291807000 | USD |
| CY2015 | us-gaap |
Increase Due To Purchases Of Minerals In Place
IncreaseDueToPurchasesOfMineralsInPlace
|
57359000 | USD |
| CY2013 | us-gaap |
Interest Costs Capitalized
InterestCostsCapitalized
|
4000000 | USD |
| CY2014 | us-gaap |
Interest Costs Capitalized
InterestCostsCapitalized
|
5300000 | USD |
| CY2013 | us-gaap |
Interest Costs Capitalized Adjustment
InterestCostsCapitalizedAdjustment
|
3951000 | USD |
| CY2014 | us-gaap |
Interest Costs Capitalized Adjustment
InterestCostsCapitalizedAdjustment
|
5275000 | USD |
| CY2015 | us-gaap |
Interest Costs Capitalized Adjustment
InterestCostsCapitalizedAdjustment
|
0 | USD |
| CY2013 | us-gaap |
Interest Costs Incurred
InterestCostsIncurred
|
10322000 | USD |
| CY2014 | us-gaap |
Interest Costs Incurred
InterestCostsIncurred
|
36669000 | USD |
| CY2015 | us-gaap |
Interest Costs Incurred
InterestCostsIncurred
|
40221000 | USD |
| CY2013 | us-gaap |
Interest Expense
InterestExpense
|
8059000 | USD |
| CY2014 | us-gaap |
Interest Expense
InterestExpense
|
34515000 | USD |
| CY2015 | us-gaap |
Interest Expense
InterestExpense
|
41513000 | USD |
| CY2013 | us-gaap |
Interest Expense Other
InterestExpenseOther
|
1688000 | USD |
| CY2014 | us-gaap |
Interest Expense Other
InterestExpenseOther
|
3121000 | USD |
| CY2015 | us-gaap |
Interest Expense Other
InterestExpenseOther
|
1292000 | USD |
| CY2013 | us-gaap |
Interest Income Expense Net
InterestIncomeExpenseNet
|
-8058000 | USD |
| CY2014 | us-gaap |
Interest Income Expense Net
InterestIncomeExpenseNet
|
-34514000 | USD |
| CY2015 | us-gaap |
Interest Income Expense Net
InterestIncomeExpenseNet
|
-41510000 | USD |
| CY2013 | us-gaap |
Interest Paid Net
InterestPaidNet
|
404000 | USD |
| CY2015Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
8606000 | USD |
| CY2014Q4 | us-gaap |
Inventory Net
InventoryNet
|
2827000 | USD |
| CY2015Q4 | us-gaap |
Inventory Net
InventoryNet
|
1728000 | USD |
| CY2013 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
571000 | USD |
| CY2014 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
852000 | USD |
| CY2015 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
1449000 | USD |
| CY2013 | us-gaap |
Lease Operating Expense
LeaseOperatingExpense
|
19991000 | USD |
| CY2014 | us-gaap |
Lease Operating Expense
LeaseOperatingExpense
|
55166000 | USD |
| CY2015 | us-gaap |
Lease Operating Expense
LeaseOperatingExpense
|
82404000 | USD |
| CY2014Q4 | us-gaap |
Liabilities
Liabilities
|
1110268000 | USD |
| CY2015Q4 | us-gaap |
Liabilities
Liabilities
|
649439000 | USD |
| CY2014Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
3095481000 | USD |
| CY2015Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
2758412000 | USD |
| CY2014Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
266729000 | USD |
| CY2015Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
141421000 | USD |
| CY2014Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
673500000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
495500000 | USD |
| CY2014Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
673500000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
495500000 | USD |
| CY2014Q4 | us-gaap |
Minority Interest
MinorityInterest
|
234202000 | USD |
| CY2015Q4 | us-gaap |
Minority Interest
MinorityInterest
|
233001000 | USD |
| CY2014 | us-gaap |
Minority Interest Decrease From Distributions To Noncontrolling Interest Holders
MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
|
2314000 | USD |
| CY2015 | us-gaap |
Minority Interest Decrease From Distributions To Noncontrolling Interest Holders
MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
|
7968000 | USD |
| CY2013 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
773560000 | USD |
| CY2014 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
1140236000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
468481000 | USD |
| CY2013 | us-gaap |
Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
|
-940140000 | USD |
| CY2014 | us-gaap |
Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
|
-1481997000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
|
-895050000 | USD |
| CY2013 | us-gaap |
Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
|
155777000 | USD |
| CY2014 | us-gaap |
Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
|
356389000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
|
416501000 | USD |
| CY2013 | us-gaap |
Net Income Loss
NetIncomeLoss
|
54587000 | USD |
| CY2014Q1 | us-gaap |
Net Income Loss
NetIncomeLoss
|
23589000 | USD |
| CY2014Q2 | us-gaap |
Net Income Loss
NetIncomeLoss
|
27753000 | USD |
| CY2014Q3 | us-gaap |
Net Income Loss
NetIncomeLoss
|
43739000 | USD |
| CY2014Q4 | us-gaap |
Net Income Loss
NetIncomeLoss
|
98674000 | USD |
| CY2014 | us-gaap |
Net Income Loss
NetIncomeLoss
|
193755000 | USD |
| CY2015Q1 | us-gaap |
Net Income Loss
NetIncomeLoss
|
5849000 | USD |
| CY2015Q2 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-212287000 | USD |
| CY2015Q3 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-156781000 | USD |
| CY2015Q4 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-187409000 | USD |
| CY2015 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-550628000 | USD |
| CY2013 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
0 | USD |
| CY2014Q1 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
0 | USD |
| CY2014Q2 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
71000 | USD |
| CY2014Q3 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
902000 | USD |
| CY2014Q4 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
1243000 | USD |
| CY2014 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
2216000 | USD |
| CY2015Q1 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
590000 | USD |
| CY2015Q2 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
935000 | USD |
| CY2015Q3 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
739000 | USD |
| CY2015Q4 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
574000 | USD |
| CY2015 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
2838000 | USD |
| CY2013 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
54587000 | USD |
| CY2014 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
193755000 | USD |
| CY2015 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
-550628000 | USD |
| CY2013 | us-gaap |
Net Increase Decrease In Sales And Transfer Prices And Production Costs
NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts
|
51828000 | USD |
| CY2014 | us-gaap |
Net Increase Decrease In Sales And Transfer Prices And Production Costs
NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts
|
-105210000 | USD |
| CY2015 | us-gaap |
Net Increase Decrease In Sales And Transfer Prices And Production Costs
NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts
|
-1383698000 | USD |
| CY2014 | us-gaap |
Noncontrolling Interest Increase From Subsidiary Equity Issuance
NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
|
232198000 | USD |
| CY2013 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
-8853000 | USD |
| CY2014 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
92286000 | USD |
| CY2015 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
-8831000 | USD |
| CY2014Q4 | us-gaap |
Oil And Gas Property Full Cost Method Gross
OilAndGasPropertyFullCostMethodGross
|
3118597000 | USD |
| CY2015Q4 | us-gaap |
Oil And Gas Property Full Cost Method Gross
OilAndGasPropertyFullCostMethodGross
|
3955373000 | USD |
| CY2013 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
208002000 | USD |
| CY2014Q1 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
98004000 | USD |
| CY2014Q2 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
127004000 | USD |
| CY2014Q3 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
139127000 | USD |
| CY2014Q4 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
131583000 | USD |
| CY2014 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
495718000 | USD |
| CY2015Q1 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
101401000 | USD |
| CY2015Q2 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
119063000 | USD |
| CY2015Q3 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
111946000 | USD |
| CY2015Q4 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
114323000 | USD |
| CY2015 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
446733000 | USD |
| CY2013 | us-gaap |
Operating Expenses
OperatingExpenses
|
112808000 | USD |
| CY2014 | us-gaap |
Operating Expenses
OperatingExpenses
|
283048000 | USD |
| CY2015 | us-gaap |
Operating Expenses
OperatingExpenses
|
1187002000 | USD |
| CY2013 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
95194000 | USD |
| CY2014Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
48063000 | USD |
| CY2014Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
63192000 | USD |
| CY2014Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
63516000 | USD |
| CY2014Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
37899000 | USD |
| CY2014 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
212670000 | USD |
| CY2015Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
1437000 | USD |
| CY2015Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-299120000 | USD |
| CY2015Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-254773000 | USD |
| CY2015Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-187813000 | USD |
| CY2015 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-740269000 | USD |
| CY2014 | us-gaap |
Operating Loss Carryforwards Expiration Date
OperatingLossCarryforwardsExpirationDate
|
2034-12-31 | |
| CY2015 | us-gaap |
Operating Loss Carryforwards Expiration Date
OperatingLossCarryforwardsExpirationDate
|
2035-12-31 | |
| CY2014Q4 | us-gaap |
Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
|
41149000 | USD |
| CY2015Q4 | us-gaap |
Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
|
44293000 | USD |
| CY2014Q4 | us-gaap |
Other Assets Current
OtherAssetsCurrent
|
120207000 | USD |
| CY2015Q4 | us-gaap |
Other Assets Current
OtherAssetsCurrent
|
7498000 | USD |
| CY2014Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
50029000 | USD |
| CY2015Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
52042000 | USD |
| CY2014Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
240499000 | USD |
| CY2015Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
121196000 | USD |
| CY2013 | us-gaap |
Other Nonoperating Expense
OtherNonoperatingExpense
|
0 | USD |
| CY2014 | us-gaap |
Other Nonoperating Expense
OtherNonoperatingExpense
|
1416000 | USD |
| CY2015 | us-gaap |
Other Nonoperating Expense
OtherNonoperatingExpense
|
0 | USD |
| CY2013 | us-gaap |
Other Nonoperating Income
OtherNonoperatingIncome
|
0 | USD |
| CY2014 | us-gaap |
Other Nonoperating Income
OtherNonoperatingIncome
|
556000 | USD |
| CY2015 | us-gaap |
Other Nonoperating Income
OtherNonoperatingIncome
|
567000 | USD |
| CY2014Q4 | us-gaap |
Other Sundry Liabilities Current
OtherSundryLiabilitiesCurrent
|
6688000 | USD |
| CY2015Q4 | us-gaap |
Other Sundry Liabilities Current
OtherSundryLiabilitiesCurrent
|
8193000 | USD |
| CY2013 | us-gaap |
Payments For Derivative Instrument Investing Activities
PaymentsForDerivativeInstrumentInvestingActivities
|
289000 | USD |
| CY2014 | us-gaap |
Payments For Derivative Instrument Investing Activities
PaymentsForDerivativeInstrumentInvestingActivities
|
0 | USD |
| CY2015 | us-gaap |
Payments For Derivative Instrument Investing Activities
PaymentsForDerivativeInstrumentInvestingActivities
|
0 | USD |
| CY2013 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
7578000 | USD |
| CY2014 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
1453000 | USD |
| CY2015 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
0 | USD |
| CY2013 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
12361000 | USD |
| CY2014 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
3469000 | USD |
| CY2015 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
526000 | USD |
| CY2013 | us-gaap |
Payments Of Stock Issuance Costs
PaymentsOfStockIssuanceCosts
|
1009000 | USD |
| CY2014 | us-gaap |
Payments Of Stock Issuance Costs
PaymentsOfStockIssuanceCosts
|
2994000 | USD |
| CY2015 | us-gaap |
Payments Of Stock Issuance Costs
PaymentsOfStockIssuanceCosts
|
586000 | USD |
| CY2014Q4 | us-gaap |
Payments To Acquire Equity Method Investments
PaymentsToAcquireEquityMethodInvestments
|
600000 | USD |
| CY2013 | us-gaap |
Payments To Acquire Equity Method Investments
PaymentsToAcquireEquityMethodInvestments
|
0 | USD |
| CY2014 | us-gaap |
Payments To Acquire Equity Method Investments
PaymentsToAcquireEquityMethodInvestments
|
34477000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Equity Method Investments
PaymentsToAcquireEquityMethodInvestments
|
2702000 | USD |
| CY2013 | us-gaap |
Payments To Acquire Mineral Rights
PaymentsToAcquireMineralRights
|
444083000 | USD |
| CY2014 | us-gaap |
Payments To Acquire Mineral Rights
PaymentsToAcquireMineralRights
|
57689000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Mineral Rights
PaymentsToAcquireMineralRights
|
43907000 | USD |
| CY2013 | us-gaap |
Payments To Acquire Oil And Gas Equipment
PaymentsToAcquireOilAndGasEquipment
|
5127000 | USD |
| CY2014 | us-gaap |
Payments To Acquire Oil And Gas Equipment
PaymentsToAcquireOilAndGasEquipment
|
1509000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Oil And Gas Equipment
PaymentsToAcquireOilAndGasEquipment
|
0 | USD |
| CY2013 | us-gaap |
Payments To Acquire Oil And Gas Property
PaymentsToAcquireOilAndGasProperty
|
177343000 | USD |
| CY2014 | us-gaap |
Payments To Acquire Oil And Gas Property
PaymentsToAcquireOilAndGasProperty
|
845826000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Oil And Gas Property
PaymentsToAcquireOilAndGasProperty
|
437455000 | USD |
| CY2013 | us-gaap |
Payments To Acquire Other Productive Assets
PaymentsToAcquireOtherProductiveAssets
|
2234000 | USD |
| CY2014 | us-gaap |
Payments To Acquire Other Productive Assets
PaymentsToAcquireOtherProductiveAssets
|
44213000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Other Productive Assets
PaymentsToAcquireOtherProductiveAssets
|
1213000 | USD |
| CY2013 | us-gaap |
Payments To Explore And Develop Oil And Gas Properties
PaymentsToExploreAndDevelopOilAndGasProperties
|
278809000 | USD |
| CY2014 | us-gaap |
Payments To Explore And Develop Oil And Gas Properties
PaymentsToExploreAndDevelopOilAndGasProperties
|
494708000 | USD |
| CY2015 | us-gaap |
Payments To Explore And Develop Oil And Gas Properties
PaymentsToExploreAndDevelopOilAndGasProperties
|
419241000 | USD |
| CY2013 | us-gaap |
Payments To Minority Shareholders
PaymentsToMinorityShareholders
|
0 | USD |
| CY2014 | us-gaap |
Payments To Minority Shareholders
PaymentsToMinorityShareholders
|
2314000 | USD |
| CY2015 | us-gaap |
Payments To Minority Shareholders
PaymentsToMinorityShareholders
|
7968000 | USD |
| CY2014Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
4600000 | USD |
| CY2015Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
2875000 | USD |
| CY2013 | us-gaap |
Previously Estimated Development Costs Incurred
PreviouslyEstimatedDevelopmentCostsIncurred
|
76631000 | USD |
| CY2014 | us-gaap |
Previously Estimated Development Costs Incurred
PreviouslyEstimatedDevelopmentCostsIncurred
|
111527000 | USD |
| CY2015 | us-gaap |
Previously Estimated Development Costs Incurred
PreviouslyEstimatedDevelopmentCostsIncurred
|
129901000 | USD |
| CY2013 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
322680000 | USD |
| CY2014 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
928432000 | USD |
| CY2015 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
650688000 | USD |
| CY2013 | us-gaap |
Proceeds From Issuance Of Senior Long Term Debt
ProceedsFromIssuanceOfSeniorLongTermDebt
|
450000000 | USD |
| CY2014 | us-gaap |
Proceeds From Issuance Of Senior Long Term Debt
ProceedsFromIssuanceOfSeniorLongTermDebt
|
0 | USD |
| CY2015 | us-gaap |
Proceeds From Issuance Of Senior Long Term Debt
ProceedsFromIssuanceOfSeniorLongTermDebt
|
0 | USD |
| CY2013 | us-gaap |
Proceeds From Lines Of Credit
ProceedsFromLinesOfCredit
|
59000000 | USD |
| CY2014 | us-gaap |
Proceeds From Lines Of Credit
ProceedsFromLinesOfCredit
|
509400000 | USD |
| CY2015 | us-gaap |
Proceeds From Lines Of Credit
ProceedsFromLinesOfCredit
|
425001000 | USD |
| CY2013 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
-9120000 | USD |
| CY2014 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
618000 | USD |
| CY2013 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
72000 | USD |
| CY2014 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
56000 | USD |
| CY2015 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
9739000 | USD |
| CY2013 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
3501000 | USD |
| CY2014 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
7081000 | USD |
| CY2015 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
4873000 | USD |
| CY2013 | us-gaap |
Production Tax Expense
ProductionTaxExpense
|
12899000 | USD |
| CY2014 | us-gaap |
Production Tax Expense
ProductionTaxExpense
|
32638000 | USD |
| CY2015 | us-gaap |
Production Tax Expense
ProductionTaxExpense
|
32990000 | USD |
| CY2013 | us-gaap |
Profit Loss
ProfitLoss
|
54587000 | USD |
| CY2014Q1 | us-gaap |
Profit Loss
ProfitLoss
|
23589000 | USD |
| CY2014Q2 | us-gaap |
Profit Loss
ProfitLoss
|
27824000 | USD |
| CY2014Q3 | us-gaap |
Profit Loss
ProfitLoss
|
44641000 | USD |
| CY2014Q4 | us-gaap |
Profit Loss
ProfitLoss
|
99917000 | USD |
| CY2014 | us-gaap |
Profit Loss
ProfitLoss
|
195971000 | USD |
| CY2015Q1 | us-gaap |
Profit Loss
ProfitLoss
|
6439000 | USD |
| CY2015Q2 | us-gaap |
Profit Loss
ProfitLoss
|
-211352000 | USD |
| CY2015Q3 | us-gaap |
Profit Loss
ProfitLoss
|
-156042000 | USD |
| CY2015Q4 | us-gaap |
Profit Loss
ProfitLoss
|
-186835000 | USD |
| CY2015 | us-gaap |
Profit Loss
ProfitLoss
|
-547790000 | USD |
| CY2014Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
2791807000 | USD |
| CY2015Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
2597625000 | USD |
| CY2014Q4 | us-gaap |
Property Plant And Equipment Other
PropertyPlantAndEquipmentOther
|
48180000 | USD |
| CY2015Q4 | us-gaap |
Property Plant And Equipment Other
PropertyPlantAndEquipmentOther
|
48621000 | USD |
| CY2014 | us-gaap |
Royalty Revenue
RoyaltyRevenue
|
0 | USD |
| CY2015 | us-gaap |
Royalty Revenue
RoyaltyRevenue
|
0 | USD |
| CY2013 | us-gaap |
Sales And Transfers Of Oil And Gas Produced Net Of Production Costs
SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts
|
173946000 | USD |
| CY2014 | us-gaap |
Sales And Transfers Of Oil And Gas Produced Net Of Production Costs
SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts
|
404409000 | USD |
| CY2015 | us-gaap |
Sales And Transfers Of Oil And Gas Produced Net Of Production Costs
SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts
|
331119000 | USD |
| CY2013 | us-gaap |
Selling General And Administrative Expense
SellingGeneralAndAdministrativeExpense
|
9870000 | USD |
| CY2014 | us-gaap |
Selling General And Administrative Expense
SellingGeneralAndAdministrativeExpense
|
19921000 | USD |
| CY2014Q4 | us-gaap |
Property Plant And Equipment Other Net
PropertyPlantAndEquipmentOtherNet
|
48180000 | USD |
| CY2015Q4 | us-gaap |
Property Plant And Equipment Other Net
PropertyPlantAndEquipmentOtherNet
|
48621000 | USD |
| CY2014Q4 | us-gaap |
Proved Undeveloped Reserve Boe1
ProvedUndevelopedReserveBOE1
|
46347783 | Boe |
| CY2015Q4 | us-gaap |
Proved Undeveloped Reserve Boe1
ProvedUndevelopedReserveBOE1
|
64767000 | Boe |
| CY2013 | us-gaap |
Related Party Transaction Selling General And Administrative Expenses From Transactions With Related Party
RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty
|
1166000 | USD |
| CY2014 | us-gaap |
Related Party Transaction Selling General And Administrative Expenses From Transactions With Related Party
RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty
|
1345000 | USD |
| CY2015 | us-gaap |
Related Party Transaction Selling General And Administrative Expenses From Transactions With Related Party
RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty
|
2328000 | USD |
| CY2013 | us-gaap |
Repayments Of Lines Of Credit
RepaymentsOfLinesOfCredit
|
49000000 | USD |
| CY2014 | us-gaap |
Repayments Of Lines Of Credit
RepaymentsOfLinesOfCredit
|
295900000 | USD |
| CY2015 | us-gaap |
Repayments Of Lines Of Credit
RepaymentsOfLinesOfCredit
|
603001000 | USD |
| CY2014Q4 | us-gaap |
Restricted Cash And Cash Equivalents At Carrying Value
RestrictedCashAndCashEquivalentsAtCarryingValue
|
500000 | USD |
| CY2015Q4 | us-gaap |
Restricted Cash And Cash Equivalents At Carrying Value
RestrictedCashAndCashEquivalentsAtCarryingValue
|
500000 | USD |
| CY2013 | us-gaap |
Results Of Operations Accretion Of Asset Retirement Obligations
ResultsOfOperationsAccretionOfAssetRetirementObligations
|
201000 | USD |
| CY2014 | us-gaap |
Results Of Operations Accretion Of Asset Retirement Obligations
ResultsOfOperationsAccretionOfAssetRetirementObligations
|
467000 | USD |
| CY2015 | us-gaap |
Results Of Operations Accretion Of Asset Retirement Obligations
ResultsOfOperationsAccretionOfAssetRetirementObligations
|
833000 | USD |
| CY2013 | us-gaap |
Results Of Operations Depreciation Depletion Amortization And Accretion
ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion
|
65821000 | USD |
| CY2014 | us-gaap |
Results Of Operations Depreciation Depletion Amortization And Accretion
ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion
|
168674000 | USD |
| CY2015 | us-gaap |
Results Of Operations Depreciation Depletion Amortization And Accretion
ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion
|
216056000 | USD |
| CY2013 | us-gaap |
Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions
ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions
|
65821000 | USD |
| CY2014 | us-gaap |
Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions
ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions
|
168674000 | USD |
| CY2015 | us-gaap |
Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions
ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions
|
216056000 | USD |
| CY2013 | us-gaap |
Results Of Operations Impairment Of Oil And Gas Properties
ResultsOfOperationsImpairmentOfOilAndGasProperties
|
0 | USD |
| CY2014 | us-gaap |
Results Of Operations Impairment Of Oil And Gas Properties
ResultsOfOperationsImpairmentOfOilAndGasProperties
|
0 | USD |
| CY2015 | us-gaap |
Results Of Operations Impairment Of Oil And Gas Properties
ResultsOfOperationsImpairmentOfOilAndGasProperties
|
814798000 | USD |
| CY2013 | us-gaap |
Results Of Operations Income Tax Expense
ResultsOfOperationsIncomeTaxExpense
|
31754000 | USD |
| CY2014 | us-gaap |
Results Of Operations Income Tax Expense
ResultsOfOperationsIncomeTaxExpense
|
108985000 | USD |
| CY2015 | us-gaap |
Results Of Operations Income Tax Expense
ResultsOfOperationsIncomeTaxExpense
|
-201310000 | USD |
| CY2013 | us-gaap |
Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs
ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts
|
75252000 | USD |
| CY2014 | us-gaap |
Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs
ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts
|
126282000 | USD |
| CY2015 | us-gaap |
Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs
ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts
|
-505350000 | USD |
| CY2013 | us-gaap |
Results Of Operations Production Or Lifting Costs
ResultsOfOperationsProductionOrLiftingCosts
|
21157000 | USD |
| CY2014 | us-gaap |
Results Of Operations Production Or Lifting Costs
ResultsOfOperationsProductionOrLiftingCosts
|
55384000 | USD |
| CY2015 | us-gaap |
Results Of Operations Production Or Lifting Costs
ResultsOfOperationsProductionOrLiftingCosts
|
82625000 | USD |
| CY2013 | us-gaap |
Results Of Operations Revenue From Oil And Gas Producing Activities
ResultsOfOperationsRevenueFromOilAndGasProducingActivities
|
208002000 | USD |
| CY2014 | us-gaap |
Results Of Operations Revenue From Oil And Gas Producing Activities
ResultsOfOperationsRevenueFromOilAndGasProducingActivities
|
495718000 | USD |
| CY2015 | us-gaap |
Results Of Operations Revenue From Oil And Gas Producing Activities
ResultsOfOperationsRevenueFromOilAndGasProducingActivities
|
446733000 | USD |
| CY2013 | us-gaap |
Results Of Operations Transportation Costs
ResultsOfOperationsTransportationCosts
|
918000 | USD |
| CY2014 | us-gaap |
Results Of Operations Transportation Costs
ResultsOfOperationsTransportationCosts
|
3288000 | USD |
| CY2015 | us-gaap |
Results Of Operations Transportation Costs
ResultsOfOperationsTransportationCosts
|
6091000 | USD |
| CY2014Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
196268000 | USD |
| CY2015Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
-354360000 | USD |
| CY2013 | us-gaap |
Revisions Of Previous Quantity Estimates
RevisionsOfPreviousQuantityEstimates
|
-126993000 | USD |
| CY2014 | us-gaap |
Revisions Of Previous Quantity Estimates
RevisionsOfPreviousQuantityEstimates
|
-173004000 | USD |
| CY2015 | us-gaap |
Revisions Of Previous Quantity Estimates
RevisionsOfPreviousQuantityEstimates
|
-377160000 | USD |
| CY2013 | us-gaap |
Royalty Revenue
RoyaltyRevenue
|
0 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
|
0 | USD |
| CY2015 | us-gaap |
Selling General And Administrative Expense
SellingGeneralAndAdministrativeExpense
|
29640000 | USD |
| CY2013 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
1752000 | USD |
| CY2014 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
9816000 | USD |
| CY2015 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
18529000 | USD |
| CY2015Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
|
8000 | shares |
| CY2015Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
|
17.50 | |
| CY2013 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
5700000 | USD |
| CY2014 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
22000000 | USD |
| CY2015 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
15700000 | USD |
| CY2015Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
|
1787000 | USD |
| CY2014Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
313105 | shares |
| CY2015Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
39500 | shares |
| CY2014Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
18.29 | |
| CY2015Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
21.66 | |
| CY2015Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
|
1787000 | USD |
| CY2015Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
|
39500 | shares |
| CY2015Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
|
21.66 | |
| CY2015 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
|
17.80 | |
| CY2015Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
|
395000 | USD |
| CY2015 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
|
P9M11D | |
| CY2015 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
|
P1Y9M29D | |
| CY2015 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1
|
P1Y9M29D | |
| CY2015Q4 | us-gaap |
Significant Supply Commitment Remaining Minimum Amount Committed
SignificantSupplyCommitmentRemainingMinimumAmountCommitted
|
66884000 | USD |
| CY2013 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other
StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther
|
39744000 | USD |
| CY2014 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other
StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther
|
79303000 | USD |
| CY2015 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other
StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther
|
104160000 | USD |
| CY2012Q4 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves
StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
|
367220000 | USD |
| CY2013Q4 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves
StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
|
975639000 | USD |
| CY2014Q4 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves
StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
|
2045224000 | USD |
| CY2015Q4 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves
StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
|
1418133000 | USD |
| CY2014 | us-gaap |
Stock Issued During Period Shares Issued For Services
StockIssuedDuringPeriodSharesIssuedForServices
|
64000 | shares |
| CY2015 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
273605 | shares |
| CY2014 | us-gaap |
Stock Issued During Period Value Issued For Services
StockIssuedDuringPeriodValueIssuedForServices
|
3750000 | USD |
| CY2013 | us-gaap |
Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
|
321912000 | USD |
| CY2014 | us-gaap |
Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
|
689482000 | USD |
| CY2015 | us-gaap |
Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
|
650073000 | USD |
| CY2013 | us-gaap |
Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
|
3501000 | USD |
| CY2014 | us-gaap |
Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
|
7080000 | USD |
| CY2015 | us-gaap |
Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
|
4871000 | USD |
| CY2014Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
1751011000 | USD |
| CY2015Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
1875972000 | USD |
| CY2012Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
462068000 | USD |
| CY2013Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
845541000 | USD |
| CY2014Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
1985213000 | USD |
| CY2015Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
2108973000 | USD |
| CY2014Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
9952000 | USD |
| CY2015Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
518000 | USD |
| CY2013 | us-gaap |
Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
|
0 | USD |
| CY2014 | us-gaap |
Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
|
0 | USD |
| CY2014Q4 | us-gaap |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate
UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
|
0 | USD |
| CY2015Q4 | us-gaap |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate
UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
|
0 | USD |
| CY2013 | us-gaap |
Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
|
240000 | shares |
| CY2014 | us-gaap |
Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
|
471000 | shares |
| CY2015 | us-gaap |
Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
|
0 | shares |
| CY2013 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
42255000 | shares |
| CY2014 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
53297000 | shares |
| CY2015 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
63019000 | shares |
| CY2013 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
42015000 | shares |
| CY2014 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
52826000 | shares |
| CY2015 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
63019000 | shares |
| CY2015 | us-gaap |
Concentration Risk Credit Risk
ConcentrationRiskCreditRisk
|
<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Concentrations </font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company is subject to risk resulting from the concentration of its crude oil and natural gas sales and receivables with several significant purchasers. For the </font><font style="font-family:inherit;font-size:10pt;">year ended December 31, 2015</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">two purchasers accounted for more than 10% of our revenue: Shell Trading (US) Company</font><font style="font-family:inherit;font-size:10pt;"> (</font><font style="font-family:inherit;font-size:10pt;">59%</font><font style="font-family:inherit;font-size:10pt;">); </font><font style="font-family:inherit;font-size:10pt;">and Enterprise Crude Oil LLC</font><font style="font-family:inherit;font-size:10pt;"> (</font><font style="font-family:inherit;font-size:10pt;">15%</font><font style="font-family:inherit;font-size:10pt;">). For the year ended </font><font style="font-family:inherit;font-size:10pt;">December 31, 2014</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">two purchasers accounted for more than 10% of our revenue: Shell Trading (US) Company</font><font style="font-family:inherit;font-size:10pt;"> (</font><font style="font-family:inherit;font-size:10pt;">64%</font><font style="font-family:inherit;font-size:10pt;">); </font><font style="font-family:inherit;font-size:10pt;">and Enterprise Crude Oil LLC</font><font style="font-family:inherit;font-size:10pt;"> (</font><font style="font-family:inherit;font-size:10pt;">16%</font><font style="font-family:inherit;font-size:10pt;">). For the year ended </font><font style="font-family:inherit;font-size:10pt;">December 31, 2013</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">two purchasers each accounted for more than 10% of our revenue: Plains Marketing, L.P.</font><font style="font-family:inherit;font-size:10pt;"> (</font><font style="font-family:inherit;font-size:10pt;">37%</font><font style="font-family:inherit;font-size:10pt;">); </font><font style="font-family:inherit;font-size:10pt;">and Shell Trading (US) Company</font><font style="font-family:inherit;font-size:10pt;"> (</font><font style="font-family:inherit;font-size:10pt;">37%</font><font style="font-family:inherit;font-size:10pt;">). The Company does not require collateral and does not believe the loss of any single purchaser would materially impact its operating results, as crude oil and natural gas are fungible products with well-established markets and numerous purchasers.</font></div></div> | |
| CY2015 | us-gaap |
Revenue Recognition Deferred Revenue
RevenueRecognitionDeferredRevenue
|
<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Revenue and Royalties Payable </font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">For certain oil and natural gas properties, where the Company serves as operator, the Company receives production proceeds from the purchaser and further distributes such amounts to other revenue and royalty owners. Production proceeds applicable to other revenue and royalty owners are reflected as revenue and royalties payable in the accompanying consolidated balance sheets. The Company recognizes revenue for only its net revenue interest in oil and natural gas properties. </font></div></div> | |
| CY2015 | us-gaap |
Use Of Estimates
UseOfEstimates
|
<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates </font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain amounts included in or affecting the Company’s consolidated financial statements and related disclosures must be estimated by management, requiring certain assumptions to be made with respect to values or conditions that cannot be known with certainty at the time the consolidated financial statements are prepared. These estimates and assumptions affect the amounts the Company reports for assets and liabilities and the Company’s disclosure of contingent assets and liabilities at the date of the consolidated financial statements. Actual results could differ from those estimates.</font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company evaluates these estimates on an ongoing basis, using historical experience, consultation with experts and other methods the Company considers reasonable in the particular circumstances. Nevertheless, actual results may differ significantly from the Company’s estimates. Any effects on the Company’s business, financial position or results of operations resulting from revisions to these estimates are recorded in the period in which the facts that give rise to the revision become known. Significant items subject to such estimates and assumptions include estimates of proved oil and natural gas reserves and related present value estimates of future net cash flows therefrom, the carrying value of oil and natural gas properties, asset retirement obligations, the fair value determination of acquired assets and liabilities, equity-based compensation, fair value estimates of commodity derivatives and estimates of income taxes.</font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></div> |
