$FANG
Diamondback Energy, Inc. Stock $fang

$fang Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000153983813000004 Filed on March 01, 2013

Income Statement

Concept	2012 Q4	2012 Q3	2012 Q2
Revenue	$25.77M	$16.81M	$16.03M
YoY Change	77.81%	49.91%	38.52%
Cost Of Revenue	$8.300M	$4.800M	$4.400M
YoY Change	107.5%	29.73%	62.96%
Gross Profit	$18.30M	$11.80M	$11.60M
YoY Change	67.89%	61.64%	33.33%
Gross Profit Margin	71.02%	70.18%	72.36%
Selling, General & Admin	$5.900M	$1.323M	$1.005M
YoY Change	293.33%	65.38%	11.67%
% of Gross Profit	32.24%	11.21%	8.66%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$10.00M	$6.136M	$5.659M
YoY Change	122.22%	65.84%	48.92%
% of Gross Profit	54.64%	52.0%	48.78%
Operating Expenses	$15.90M	$12.73M	$11.72M
YoY Change	165.0%	182.84%	144.23%
Operating Profit	$2.177M	$4.086M	$4.307M
YoY Change	-54.87%	39.55%	5.9%
Interest Expense	$200.0K	$1.130M	$1.173M
YoY Change	-101.46%	-261.43%	-295.5%
% of Operating Profit	9.19%	27.66%	27.23%
Other Income/Expense, Net	$400.0K	-$3.634M	$9.317M
YoY Change
Pretax Income	$2.829M	$452.0K	$13.62M
YoY Change	-132.15%	-78.48%	300.71%
Income Tax	$54.90M	$0.00	$0.00
% Of Pretax Income	1940.72%	0.0%	0.0%
Net Earnings	-$52.07M	$452.0K	$13.62M
YoY Change	487.21%	-79.5%	294.56%
Net Earnings / Revenue	-202.1%	2.69%	84.99%
Basic Earnings Per Share	$0.05	$0.02	$0.60
Diluted Earnings Per Share	$0.05	$0.02	$0.60
COMMON SHARES
Basic Shares Outstanding
Diluted Shares Outstanding

Balance Sheet

Concept	2012 Q4	2012 Q3	2012 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$26.00M	$1.000M	$2.000M
YoY Change	271.43%	-66.67%
Cash & Equivalents	$26.36M	$1.442M	$2.341M
Short-Term Investments
Other Short-Term Assets	$3.000M	$1.000M	$2.000M
YoY Change		0.0%
Inventory	$6.195M	$6.000M	$6.000M
Prepaid Expenses
Receivables	$15.00M	$18.00M	$15.00M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$50.28M	$27.00M	$25.00M
YoY Change	63.17%	-18.18%
LONG-TERM ASSETS
Property, Plant & Equipment	$554.2M	$277.0M	$256.0M
YoY Change	150.62%	45.03%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$0.00	$0.00	$0.00
YoY Change	-100.0%	-100.0%
Other Assets	$2.184M	$4.000M	$2.000M
YoY Change	67.1%	300.0%
Total Long-Term Assets	$556.4M	$281.0M	$258.0M
YoY Change	139.05%	42.64%
TOTAL ASSETS
Total Short-Term Assets	$50.28M	$27.00M	$25.00M
Total Long-Term Assets	$556.4M	$281.0M	$258.0M
Total Assets	$606.7M	$308.0M	$283.0M
YoY Change	130.18%	33.91%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$31.00M	$24.00M	$12.00M
YoY Change	158.33%	33.33%
Accrued Expenses	$40.00M	$18.00M	$23.00M
YoY Change	110.53%	28.57%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$10.00M	$10.00M
YoY Change
Long-Term Debt Due	$145.0K
YoY Change
Total Short-Term Liabilities	$79.23M	$60.00M	$52.00M
YoY Change	87.32%	81.82%
LONG-TERM LIABILITIES
Long-Term Debt	$193.0K	$120.0M	$104.0M
YoY Change	-99.77%	50.0%
Other Long-Term Liabilities	$3.000M	$3.000M	$3.000M
YoY Change	-57.14%	50.0%
Total Long-Term Liabilities	$193.0K	$123.0M	$107.0M
YoY Change	-99.79%	50.0%
TOTAL LIABILITIES
Total Short-Term Liabilities	$79.23M	$60.00M	$52.00M
Total Long-Term Liabilities	$193.0K	$123.0M	$107.0M
Total Liabilities	$144.6M	$183.0M	$159.0M
YoY Change	7.5%	59.13%
SHAREHOLDERS EQUITY
Retained Earnings	-$52.07M
YoY Change
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$462.1M	$125.0M	$124.0M
YoY Change
Total Liabilities & Shareholders Equity	$606.7M	$308.0M	$283.0M
YoY Change	130.18%	33.91%

Cashflow Statement

Concept	2012 Q4	2012 Q3	2012 Q2
OPERATING ACTIVITIES
Net Income	-$52.07M	$452.0K	$13.62M
YoY Change	487.21%	-79.5%	294.56%
Depreciation, Depletion And Amortization	$10.00M	$6.136M	$5.659M
YoY Change	122.22%	65.84%	48.92%
Cash From Operating Activities	$17.90M	$9.100M	$3.100M
YoY Change	5.29%	1720.0%	-60.76%
INVESTING ACTIVITIES
Capital Expenditures	-$32.30M	-$24.80M	-$23.60M
YoY Change	5.56%	37.02%	37.21%
Acquisitions
YoY Change
Other Investing Activities	-$65.50M	-$900.0K	-$2.400M
YoY Change		-115.0%	-442.86%
Cash From Investing Activities	-$97.80M	-$25.70M	-$26.10M
YoY Change	219.61%	112.4%	59.15%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	104.8M	15.70M	16.00M
YoY Change	502.3%	27.64%	61.62%
NET CHANGE
Cash From Operating Activities	17.90M	9.100M	3.100M
Cash From Investing Activities	-97.80M	-25.70M	-26.10M
Cash From Financing Activities	104.8M	15.70M	16.00M
Net Change In Cash	24.90M	-900.0K	-7.000M
YoY Change	555.26%	-228.57%	-600.0%
FREE CASH FLOW
Cash From Operating Activities	$17.90M	$9.100M	$3.100M
Capital Expenditures	-$32.30M	-$24.80M	-$23.60M
Free Cash Flow	$50.20M	$33.90M	$26.70M
YoY Change	5.46%	82.26%	6.37%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	18813000	USD
CY2011Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	3230000	USD
CY2012Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	12141000	USD
CY2011Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	8770000	USD
CY2012Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	772000	USD
CY2011Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	12937000	USD
CY2011	us-gaap	Accretion Of Discount AccretionOfDiscount	33900000	USD
CY2012	us-gaap	Accretion Of Discount AccretionOfDiscount	36461000	USD
CY2010	us-gaap	Accretion Of Discount AccretionOfDiscount	39292000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	145837000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	119699000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	513772000	USD
CY2011Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	0	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2535000	USD
CY2012Q4	us-gaap	Amortization Expense Per Physical Unit Of Production AmortizationExpensePerPhysicalUnitOfProduction	23.90
CY2011Q4	us-gaap	Amortization Expense Per Physical Unit Of Production AmortizationExpensePerPhysicalUnitOfProduction	25.41
CY2010Q4	us-gaap	Amortization Expense Per Physical Unit Of Production AmortizationExpensePerPhysicalUnitOfProduction	17.78
CY2011	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	250000	USD
CY2012	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	494000	USD
CY2010	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	163000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	2145000	USD
CY2010Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	742000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1104000	USD
CY2009Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	482000	USD
CY2012	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	98000	USD
CY2011	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	65000	USD
CY2010	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	38000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	0	USD
CY2012Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	20000	USD
CY2010Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	0	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	562000	USD
CY2010	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	0	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	0	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	0	USD
CY2010	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	0	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	5000	USD
CY2012	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	185000	USD
CY2011	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	0	USD
CY2010	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	0	USD
CY2012Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	2125000	USD
CY2011Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	1104000	USD
CY2010Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	742000	USD
CY2011Q4	us-gaap	Assets Assets	263578000	USD
CY2012Q4	us-gaap	Assets Assets	606701000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	50275000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	30812000	USD
CY2012	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	0.60
CY2012Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Equity Interests Issued And Issuable BusinessAcquisitionCostOfAcquiredEntityEquityInterestsIssuedAndIssuable	138496000	USD
CY2012Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Liabilities Incurred BusinessAcquisitionCostOfAcquiredEntityLiabilitiesIncurred	63590000	USD
CY2012Q4	us-gaap	Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued	7914036	shares
CY2012Q4	us-gaap	Business Acquisition Share Price BusinessAcquisitionSharePrice	17.50
CY2012	us-gaap	Business Acquisitions Pro Forma Income Loss From Continuing Operations Before Changes In Accounting And Extraordinary Items Net Of Tax BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax	24064000	USD
CY2011	us-gaap	Business Acquisitions Pro Forma Income Loss From Continuing Operations Before Changes In Accounting And Extraordinary Items Net Of Tax BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax	23189000	USD
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CY2011	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	72418000	USD
CY2012	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	97455000	USD
CY2012Q4	us-gaap	Business Combination Consideration Transferred BusinessCombinationConsiderationTransferred	220636000	USD
CY2012Q4	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	2260000	USD
CY2012Q4	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	7353000	USD
CY2012Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	220636000	USD
CY2011Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	119366000	USD
CY2012Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	145102000	USD
CY2011Q4	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization Cumulative CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative	4528000	USD
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CY2012Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	697742000	USD
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CY2011Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	220465000	USD
CY2011Q4	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	335303000	USD
CY2012Q4	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	576497000	USD
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CY2011Q4	us-gaap	Capitalized Costs Unproved Properties CapitalizedCostsUnprovedProperties	4528000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	26358000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	6959000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4119000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2430000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	2840000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	19399000	USD
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CY2011	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	10000	USD
CY2010	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0	USD
CY2012	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0	USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	36986532	shares
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CY2012Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	370000	USD
CY2012Q4	us-gaap	Contractual Obligation ContractualObligation	18000000	USD
CY2012Q4	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	14400000	USD
CY2012Q4	us-gaap	Contractual Obligation Due In Second Year ContractualObligationDueInSecondYear	3600000	USD
CY2011	us-gaap	Contribution Of Property ContributionOfProperty	0	USD
CY2012	us-gaap	Contribution Of Property ContributionOfProperty	0	USD
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CY2011	us-gaap	Cost Of Services Oil And Gas CostOfServicesOilAndGas	1207000	USD
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CY2012	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	357911000	USD
CY2011	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	0	USD
CY2010	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	0	USD
CY2012	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	115760000	USD
CY2011	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	3704000	USD
CY2010	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	9930000	USD
CY2012	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	117395000	USD
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CY2012	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	948000	USD
CY2011	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	75374000	USD
CY2010	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	48817000	USD
CY2012	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	106261000	USD
CY2012	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	17547000	USD
CY2011	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	11226000	USD
CY2010	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	3920000	USD
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CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	2507000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1577000	USD
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CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	60838000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	65202000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	62695000	USD
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CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	566000	USD
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CY2012	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	86000	USD
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CY2011	us-gaap	Depreciation Depreciation	727000	USD
CY2012	us-gaap	Depreciation Depreciation	501000	USD
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CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	15601000	USD
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CY2012	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	2617000	USD
CY2010	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-148000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-13009000	USD
CY2011Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	8320000	USD
CY2012Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	4817000	USD
CY2012Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	388000	USD
CY2011Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	6139000	USD
CY2012	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	0.60
CY2012	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	611548000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	671894000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	607982000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	2049520000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	1856294000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	2769485000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts	398305000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts	541445000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts	410350000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	334903000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	0	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	1036506000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	978768000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	0	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	946983000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts	497808000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts	384916000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts	773611000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	364612000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	339001000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	367220000	USD
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.05
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.02
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.05
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.60
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2012Q4	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2012Q4	us-gaap	Equity Method Investments EquityMethodInvestments	0	USD
CY2011Q4	us-gaap	Equity Method Investments EquityMethodInvestments	10310000	USD
CY2012	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	79293000	USD
CY2011	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	73571000	USD
CY2010	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	59414000	USD
CY2010	us-gaap	Gain Loss On Price Risk Derivative Instruments Not Designated As Hedging Instruments GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments	0	USD
CY2011	us-gaap	Gain Loss On Price Risk Derivative Instruments Not Designated As Hedging Instruments GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments	-12972000	USD
CY2012	us-gaap	Gain Loss On Price Risk Derivative Instruments Not Designated As Hedging Instruments GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments	8057000	USD
CY2010	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	5000	USD
CY2011	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	23000	USD
CY2012	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	37000	USD
CY2012	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	124000	USD
CY2011	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	53000	USD
CY2010	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	106000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	18382000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	8231000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-386000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1477000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	452000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2829000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	13624000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-67000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-7000	USD
CY2012Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	54903000	USD
CY2012Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2012Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	54903000	USD
CY2012Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2012Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2012Q4	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	54142000	USD
	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	-5717000	USD
CY2012Q4	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	717000	USD
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	6434000	USD
CY2012Q4	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	2000	USD
CY2012Q4	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	42000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	7151000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	1954000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	2656000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable Related Parties IncreaseDecreaseInAccountsPayableRelatedParties	-409000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable Related Parties IncreaseDecreaseInAccountsPayableRelatedParties	-1218000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable Related Parties IncreaseDecreaseInAccountsPayableRelatedParties	830000	USD
CY2010	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1822000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1547000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	5036000	USD
CY2010	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	6793000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	4133000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	-6096000	USD
CY2011	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-82855000	USD
CY2010	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-23992000	USD
CY2012	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	8309000	USD
CY2011	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	0	USD
CY2010	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	0	USD
CY2012	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	107897000	USD
CY2012	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-125542000	USD
CY2010	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	4897000	USD
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	872000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	639000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	202000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	606000	USD
CY2011	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	0	USD
CY2010	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	326000	USD
CY2010	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	0	USD
CY2010	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	150000	USD
CY2011	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	USD
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	USD
CY2011	us-gaap	Interest Expense InterestExpense	2528000	USD
CY2010	us-gaap	Interest Expense InterestExpense	836000	USD
CY2012	us-gaap	Interest Expense InterestExpense	3610000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	600000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	3017000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	2265000	USD
CY2011Q4	us-gaap	Inventory Net InventoryNet	6007000	USD
CY2012Q4	us-gaap	Inventory Net InventoryNet	6195000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	3000	USD
CY2010	us-gaap	Investment Income Interest InvestmentIncomeInterest	34000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	11000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	74000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	0	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	547000	USD
CY2010	us-gaap	Lease Operating Expense LeaseOperatingExpense	3040000	USD
CY2011	us-gaap	Lease Operating Expense LeaseOperatingExpense	8470000	USD
CY2012	us-gaap	Lease Operating Expense LeaseOperatingExpense	15777000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	134541000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	144633000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	263578000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	606701000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	79232000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	42298000	USD
CY2011Q4	us-gaap	Line Of Credit LineOfCredit	85000000	USD
CY2010Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	45000000	USD
CY2012Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	135000000	USD
CY2011Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	100000000	USD
CY2012Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	250000000	USD
CY2012	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	0.005
CY2012Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	193000	USD
CY2011Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	0	USD
CY2012Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	0	USD
CY2011Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	2326000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	51733000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	52950000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	152785000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-81108000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-55236000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-183078000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	30998000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	49692000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	5192000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	-36521000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	-386000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	8231000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	2824000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	-52074000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	3453000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	13624000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	-8868000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	452000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	1477000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	2205000	USD
CY2011	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	82364000	USD
CY2010	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	178198000	USD
CY2012	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	-76515000	USD
CY2011	us-gaap	Noncash Or Part Noncash Acquisition Other Liabilities Assumed1 NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1	0	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Other Liabilities Assumed1 NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1	562000	USD
CY2010	us-gaap	Noncash Or Part Noncash Acquisition Other Liabilities Assumed1 NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1	0	USD
CY2011	us-gaap	Noncash Or Part Noncash Acquisition Payables Assumed1 NoncashOrPartNoncashAcquisitionPayablesAssumed1	0	USD
CY2010	us-gaap	Noncash Or Part Noncash Acquisition Payables Assumed1 NoncashOrPartNoncashAcquisitionPayablesAssumed1	0	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Payables Assumed1 NoncashOrPartNoncashAcquisitionPayablesAssumed1	18550000	USD
CY2010	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-950000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-15533000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	1075000	USD
CY2011	us-gaap	Notes Issued1 NotesIssued1	0	USD
CY2010	us-gaap	Notes Issued1 NotesIssued1	0	USD
CY2012	us-gaap	Notes Issued1 NotesIssued1	411000	USD
CY2012Q4	us-gaap	Notes Payable NotesPayable	338000	USD
CY2011Q4	us-gaap	Notes Payable Current NotesPayableCurrent	0	USD
CY2012Q4	us-gaap	Notes Payable Current NotesPayableCurrent	145000	USD
CY2012Q4	us-gaap	Notes Payable Related Parties Noncurrent NotesPayableRelatedPartiesNoncurrent	0	USD
CY2011Q4	us-gaap	Notes Payable Related Parties Noncurrent NotesPayableRelatedPartiesNoncurrent	85000000	USD
CY2011Q4	us-gaap	Oil And Gas Property Full Cost Method Gross OilAndGasPropertyFullCostMethodGross	339831000	USD
CY2012Q4	us-gaap	Oil And Gas Property Full Cost Method Gross OilAndGasPropertyFullCostMethodGross	697742000	USD
CY2010	us-gaap	Oil And Gas Revenue OilAndGasRevenue	27253000	USD
CY2012	us-gaap	Oil And Gas Revenue OilAndGasRevenue	74962000	USD
CY2011	us-gaap	Oil And Gas Revenue OilAndGasRevenue	49366000	USD
CY2012Q4	us-gaap	Oil And Gas Revenue OilAndGasRevenue	25767000	USD
CY2012Q1	us-gaap	Oil And Gas Revenue OilAndGasRevenue	16351000	USD
CY2012Q2	us-gaap	Oil And Gas Revenue OilAndGasRevenue	16030000	USD
CY2011Q4	us-gaap	Oil And Gas Revenue OilAndGasRevenue	14491000	USD
CY2011Q3	us-gaap	Oil And Gas Revenue OilAndGasRevenue	11216000	USD
CY2011Q2	us-gaap	Oil And Gas Revenue OilAndGasRevenue	11572000	USD
CY2011Q1	us-gaap	Oil And Gas Revenue OilAndGasRevenue	12087000	USD
CY2012Q3	us-gaap	Oil And Gas Revenue OilAndGasRevenue	16814000	USD
CY2010	us-gaap	Operating Expenses OperatingExpenses	18072000	USD
CY2012	us-gaap	Operating Expenses OperatingExpenses	57655000	USD
CY2011	us-gaap	Operating Expenses OperatingExpenses	34219000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	9181000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	15147000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	17307000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	6737000	USD
CY2011Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	4067000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	2928000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	4307000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	2177000	USD
CY2011Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	4824000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	4086000	USD
CY2011Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	3328000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	2195000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	485000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	281000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	412000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	501000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	491000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	25000	USD
CY2012Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	4506000	USD
CY2011Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	4894000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	10649000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1307000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2184000	USD
CY2011Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	13919000	USD
CY2012Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	29397000	USD
CY2011Q4	us-gaap	Partners Capital PartnersCapital	129037000	USD
CY2012Q4	us-gaap	Partners Capital PartnersCapital	0	USD
CY2012	us-gaap	Partners Capital Account Contributions PartnersCapitalAccountContributions	4008000	USD
CY2010	us-gaap	Partners Capital Account Contributions PartnersCapitalAccountContributions	28508000	USD
CY2011	us-gaap	Partners Capital Account Contributions PartnersCapitalAccountContributions	13517000	USD
CY2010	us-gaap	Partners Capital Account Distributions PartnersCapitalAccountDistributions	5579000	USD
CY2012	us-gaap	Partners Capital Account Distributions PartnersCapitalAccountDistributions	10504000	USD
CY2010	us-gaap	Payments For Derivative Instrument Investing Activities PaymentsForDerivativeInstrumentInvestingActivities	3963000	USD
CY2012	us-gaap	Payments For Derivative Instrument Investing Activities PaymentsForDerivativeInstrumentInvestingActivities	8963000	USD
CY2011	us-gaap	Payments For Derivative Instrument Investing Activities PaymentsForDerivativeInstrumentInvestingActivities	4127000	USD
CY2011	us-gaap	Payments Of Capital Distribution PaymentsOfCapitalDistribution	0	USD
CY2012	us-gaap	Payments Of Capital Distribution PaymentsOfCapitalDistribution	0	USD
CY2010	us-gaap	Payments Of Capital Distribution PaymentsOfCapitalDistribution	5579000	USD
CY2010	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	718000	USD
CY2011	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	770000	USD
CY2012	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	450000	USD
CY2012	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	2887000	USD
CY2010	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2011	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	30000	USD
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	63590000	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2010	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2010	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	7624000	USD
CY2012	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	102122000	USD
CY2011	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	58160000	USD
CY2012	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	1102000	USD
CY2010	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	11741000	USD
CY2011	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	7065000	USD
CY2012	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	9675000	USD
CY2011	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	22014000	USD
CY2010	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	36950000	USD
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2012Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2011Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	336000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1053000	USD
CY2011	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-87530000	USD
CY2010	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-52932000	USD
CY2012	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-88849000	USD
CY2012	us-gaap	Pro Forma Weighted Average Shares Outstanding Diluted ProFormaWeightedAverageSharesOutstandingDiluted	19723774	shares
CY2011	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	4203000	USD
CY2010	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	3772000	USD
CY2012	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	2326000	USD
CY2012	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	237164000	USD
CY2011	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2010	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2011	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	40233000	USD
CY2012	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	15000000	USD
CY2010	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	61066000	USD
CY2010	us-gaap	Proceeds From Partnership Contribution ProceedsFromPartnershipContribution	20914000	USD
CY2012	us-gaap	Proceeds From Partnership Contribution ProceedsFromPartnershipContribution	4008000	USD
CY2011	us-gaap	Proceeds From Partnership Contribution ProceedsFromPartnershipContribution	13517000	USD
CY2012	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	30000000	USD
CY2011	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	0	USD
CY2010	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	0	USD
CY2011	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	6010000	USD
CY2012	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2010	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2012	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	0	USD
CY2010	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	1250000	USD
CY2011	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	0	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	48000	USD
CY2011	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	55000	USD
CY2010	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	20000	USD
CY2012	us-gaap	Production Tax Expense ProductionTaxExpense	3691000	USD
CY2010	us-gaap	Production Tax Expense ProductionTaxExpense	1347000	USD
CY2011	us-gaap	Production Tax Expense ProductionTaxExpense	2366000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	554242000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	221149000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	1017000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	2337000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	684000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	1602000	USD
CY2012	us-gaap	Related Party Transaction Selling General And Administrative Expenses From Transactions With Related Party RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty	1198000	USD
CY2010	us-gaap	Related Party Transaction Selling General And Administrative Expenses From Transactions With Related Party RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty	2656000	USD
CY2011	us-gaap	Related Party Transaction Selling General And Administrative Expenses From Transactions With Related Party RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty	3160000	USD
CY2012	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	100000000	USD
CY2010	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	23950000	USD
CY2011	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2011	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	0	USD
CY2010	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	0	USD
CY2012	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	30050000	USD
CY2010	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	7373000	USD
CY2012	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	25772000	USD
CY2011	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	15377000	USD
CY2012	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	25772000	USD
CY2011	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	15377000	USD
CY2010	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	7373000	USD
CY2011	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	19333000	USD
CY2012	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	28282000	USD
CY2010	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	13027000	USD
CY2012	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	16793000	USD
CY2010	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	4589000	USD
CY2011	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	10597000	USD
CY2012	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	74962000	USD
CY2011	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	47875000	USD
CY2010	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	26442000	USD
CY2010	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	106000	USD
CY2011	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	202000	USD
CY2012	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	424000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-52074000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	0	USD
CY2010	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-292306000	USD
CY2011	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-98533000	USD
CY2012	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-22882000	USD
CY2011	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	34711000	USD
CY2012	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	54208000	USD
CY2010	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	20401000	USD
CY2011	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	495000	USD
CY2012	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	9178000	USD
CY2010	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	380000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	3482000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	544000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	0	USD
CY2012	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-39054000	USD
CY2011	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-35655000	USD
CY2010	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-47055000	USD
CY2009Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	392919000	USD
CY2012Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	367220000	USD
CY2011Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	364612000	USD
CY2010Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	339001000	USD
CY2011	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2010	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2012	us-gaap	Stock Issued1 StockIssued1	138496000	USD
CY2012Q4	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	7914036	shares
CY2012	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	138496000	USD
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	234144000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	544000	USD
CY2012	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	873000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	129037000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	115362000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	462068000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	84202000	USD
CY2012	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:8px;text-align:left;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%;padding-top:6px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain amounts included in or affecting the Company’s combined 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 combined 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 combined consolidated financial statements. Actual results could differ from those estimates.</font></div><div style="line-height:120%;padding-bottom:16px;padding-top:6px;text-align:left;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, stock-based compensation, fair value estimates of commodity derivatives and estimates of income taxes. </font></div></div>
CY2012	us-gaap	Weighted Average Basic Shares Outstanding Pro Forma WeightedAverageBasicSharesOutstandingProForma	19720734	shares
CY2012	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3040	shares
CY2011Q4	fang	Accounts Receivable Oil And Natural Gas Sales Current AccountsReceivableOilAndNaturalGasSalesCurrent	839000	USD
CY2012Q4	fang	Accounts Receivable Oil And Natural Gas Sales Current AccountsReceivableOilAndNaturalGasSalesCurrent	8081000	USD
CY2011	fang	Asset Retirement Obligation Additional Liability Incurred AssetRetirementObligationAdditionalLiabilityIncurred	297000	USD
CY2012	fang	Asset Retirement Obligation Additional Liability Incurred AssetRetirementObligationAdditionalLiabilityIncurred	201000	USD
CY2010	fang	Asset Retirement Obligation Additional Liability Incurred AssetRetirementObligationAdditionalLiabilityIncurred	222000	USD
CY2011	fang	Asset Retirement Obligation Obligation Incurred Revision Of Estimate AssetRetirementObligationObligationIncurredRevisionOfEstimate	297000	USD
CY2012	fang	Asset Retirement Obligation Obligation Incurred Revision Of Estimate AssetRetirementObligationObligationIncurredRevisionOfEstimate	386000	USD
CY2010	fang	Asset Retirement Obligation Obligation Incurred Revision Of Estimate AssetRetirementObligationObligationIncurredRevisionOfEstimate	223000	USD
CY2012Q4	fang	Business Combination Closing Adjustment Payable BusinessCombinationClosingAdjustmentPayable	18550000	USD
CY2012Q4	fang	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Asset Retirement Obligations BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetRetirementObligations	562000	USD
CY2012Q4	fang	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deferred Tax Liabilities Noncurrent BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent	5935000	USD
CY2012Q4	fang	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Proved Oil And Gas Properties BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedProvedOilAndGasProperties	115760000	USD
CY2012Q4	fang	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Unproved Oil And Gas Properties BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedUnprovedOilAndGasProperties	111373000	USD
CY2012	fang	Capitalized Costs Proved Oil And Natural Gas Properties Net Discount Percentage CapitalizedCostsProvedOilAndNaturalGasPropertiesNetDiscountPercentage	0.1
CY2011	fang	Cost Of Services Oil And Gas Related Party CostOfServicesOilAndGasRelatedParty	526000	USD
CY2012	fang	Cost Of Services Oil And Gas Related Party CostOfServicesOilAndGasRelatedParty	0	USD
CY2010	fang	Cost Of Services Oil And Gas Related Party CostOfServicesOilAndGasRelatedParty	583000	USD
CY2011	fang	Costs Incurred Exploration And Development Costs CostsIncurredExplorationAndDevelopmentCosts	871000	USD
CY2012	fang	Costs Incurred Exploration And Development Costs CostsIncurredExplorationAndDevelopmentCosts	4872000	USD
CY2010	fang	Costs Incurred Exploration And Development Costs CostsIncurredExplorationAndDevelopmentCosts	0	USD
CY2012Q4	fang	Deferred Income Tax Expense Benefit Continuing Operations DeferredIncomeTaxExpenseBenefitContinuingOperations	761000	USD
CY2011Q4	fang	Deferred Revenue And Royalties Payable Current DeferredRevenueAndRoyaltiesPayableCurrent	3165000	USD
CY2012Q4	fang	Deferred Income Tax Expense Benefit Merger DeferredIncomeTaxExpenseBenefitMerger	54142000	USD
CY2012Q4	fang	Deferred Revenue And Royalties Payable Current DeferredRevenueAndRoyaltiesPayableCurrent	3270000	USD
CY2012	fang	Defined Contribution Plan Vesting Period DefinedContributionPlanVestingPeriod	P4Y
CY2011	fang	Depreciation Depletion And Amortization Net Of Depreciation Reported In Oil And Natural Gas Services DepreciationDepletionAndAmortizationNetOfDepreciationReportedInOilAndNaturalGasServices	16104000	USD
CY2012	fang	Depreciation Depletion And Amortization Net Of Depreciation Reported In Oil And Natural Gas Services DepreciationDepletionAndAmortizationNetOfDepreciationReportedInOilAndNaturalGasServices	26273000	USD
CY2010	fang	Depreciation Depletion And Amortization Net Of Depreciation Reported In Oil And Natural Gas Services DepreciationDepletionAndAmortizationNetOfDepreciationReportedInOilAndNaturalGasServices	8145000	USD
CY2010	fang	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Taxes DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionTaxes	126090000	USD
CY2012	fang	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Taxes DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionTaxes	140758000	USD
CY2011	fang	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Taxes DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionTaxes	104856000	USD
CY2011	fang	Distribution Of Equity Method Investments DistributionOfEquityMethodInvestments	0	USD
CY2012	fang	Distribution Of Equity Method Investments DistributionOfEquityMethodInvestments	10504000	USD
CY2010	fang	Distribution Of Equity Method Investments DistributionOfEquityMethodInvestments	0	USD
CY2012	fang	Gain Loss On Price Risk Derivative Instruments Settled During Period Not Designated As Hedging Instruments GainLossOnPriceRiskDerivativeInstrumentsSettledDuringPeriodNotDesignatedAsHedgingInstruments	-5440000	USD
CY2010	fang	Gain Loss On Price Risk Derivative Instruments Settled During Period Not Designated As Hedging Instruments GainLossOnPriceRiskDerivativeInstrumentsSettledDuringPeriodNotDesignatedAsHedgingInstruments	-148000	USD
CY2011	fang	Gain Loss On Price Risk Derivative Instruments Settled During Period Not Designated As Hedging Instruments GainLossOnPriceRiskDerivativeInstrumentsSettledDuringPeriodNotDesignatedAsHedgingInstruments	-37000	USD
CY2012	fang	Gas Gathering Transportation Marketing And Processing Costs Related Party GasGatheringTransportationMarketingAndProcessingCostsRelatedParty	300000	USD
CY2010	fang	Gas Gathering Transportation Marketing And Processing Costs Related Party GasGatheringTransportationMarketingAndProcessingCostsRelatedParty	0	USD
CY2011	fang	Gas Gathering Transportation Marketing And Processing Costs Related Party GasGatheringTransportationMarketingAndProcessingCostsRelatedParty	149000	USD
CY2010	fang	Income Loss From Equity Method Investments Operating Activities IncomeLossFromEquityMethodInvestmentsOperatingActivities	0	USD
CY2012	fang	Income Loss From Equity Method Investments Operating Activities IncomeLossFromEquityMethodInvestmentsOperatingActivities	-67000	USD
CY2011	fang	Income Loss From Equity Method Investments Operating Activities IncomeLossFromEquityMethodInvestmentsOperatingActivities	0	USD
CY2012	fang	Income Tax Expense Benefit Pro Forma IncomeTaxExpenseBenefitProForma	6553000	USD
CY2012Q1	fang	Income Tax Expense Benefit Pro Forma IncomeTaxExpenseBenefitProForma	526000	USD
CY2012Q3	fang	Income Tax Expense Benefit Pro Forma IncomeTaxExpenseBenefitProForma	161000	USD
CY2012Q2	fang	Income Tax Expense Benefit Pro Forma IncomeTaxExpenseBenefitProForma	4857000	USD
CY2012Q4	fang	Income Tax Expense Benefit Pro Forma IncomeTaxExpenseBenefitProForma	1009000	USD
CY2012Q4	fang	Income Tax Reconciliation Income Prior To Merger Oil And Gas Properties IncomeTaxReconciliationIncomePriorToMergerOilAndGasProperties	54142000	USD
CY2010	fang	Increase Decrease In Deferred Revenue And Royalties Payable IncreaseDecreaseInDeferredRevenueAndRoyaltiesPayable	-499000	USD
CY2012	fang	Increase Decrease In Deferred Revenue And Royalties Payable IncreaseDecreaseInDeferredRevenueAndRoyaltiesPayable	-105000	USD
CY2011	fang	Increase Decrease In Deferred Revenue And Royalties Payable IncreaseDecreaseInDeferredRevenueAndRoyaltiesPayable	-2666000	USD
CY2012	fang	Increase Decrease In Royalties Payable Related Party IncreaseDecreaseInRoyaltiesPayableRelatedParty	2303000	USD
CY2011	fang	Increase Decrease In Royalties Payable Related Party IncreaseDecreaseInRoyaltiesPayableRelatedParty	-2037000	USD
CY2010	fang	Increase Decrease In Royalties Payable Related Party IncreaseDecreaseInRoyaltiesPayableRelatedParty	-266000	USD
CY2011Q1	fang	Lessee Leasing Arrangements Operating Leases Term Of Contract LesseeLeasingArrangementsOperatingLeasesTermOfContract	P84M
CY2011Q2	fang	Lessee Leasing Arrangements Operating Leases Term Of Contract LesseeLeasingArrangementsOperatingLeasesTermOfContract	P5Y
CY2012Q1	fang	Lessee Leasing Arrangements Operating Leases Term Of Contract LesseeLeasingArrangementsOperatingLeasesTermOfContract	P67M
CY2012	fang	Line Of Credit Facility Borrowing Base Number Of Redeterminations LineOfCreditFacilityBorrowingBaseNumberOfRedeterminations	3
CY2012	fang	Line Of Credit Facility Borrowing Base Period Of Redetermination LineOfCreditFacilityBorrowingBasePeriodOfRedetermination	P12M
CY2012Q3	fang	Line Of Credit Facility Covenant Terms Decrease Of Borrowing Base Upon Issuance Of Additional Indebtedness Percentage LineOfCreditFacilityCovenantTermsDecreaseOfBorrowingBaseUponIssuanceOfAdditionalIndebtednessPercentage	0.25
CY2012Q3	fang	Line Of Credit Facility Covenant Terms Maximum Issuance Of Additional Indebtedness LineOfCreditFacilityCovenantTermsMaximumIssuanceOfAdditionalIndebtedness	250000000	USD
CY2011	fang	Liquid Natural Gas Sales Revenue LiquidNaturalGasSalesRevenue	3169000	USD
CY2010	fang	Liquid Natural Gas Sales Revenue LiquidNaturalGasSalesRevenue	3564000	USD
CY2012	fang	Liquid Natural Gas Sales Revenue LiquidNaturalGasSalesRevenue	3839000	USD
CY2010	fang	Natural Gas Sales Revenue NaturalGasSalesRevenue	1400000	USD
CY2012	fang	Natural Gas Sales Revenue NaturalGasSalesRevenue	1369000	USD
CY2011	fang	Natural Gas Sales Revenue NaturalGasSalesRevenue	1061000	USD
CY2012	fang	Net Income Loss Attributable To Parent Prior To Merger NetIncomeLossAttributableToParentPriorToMerger	15553000	USD
CY2012	fang	Net Income Loss Attributable To Parent Subsequent To Merger NetIncomeLossAttributableToParentSubsequentToMerger	-52074000	USD
CY2012	fang	Net Income Loss Diluted Pro Forma NetIncomeLossDilutedProForma	11829000	USD
CY2012	fang	Net Income Loss Pro Forma NetIncomeLossProForma	11829000	USD
CY2012Q1	fang	Net Income Loss Pro Forma NetIncomeLossProForma	951000	USD
CY2012Q2	fang	Net Income Loss Pro Forma NetIncomeLossProForma	8767000	USD
CY2012Q4	fang	Net Income Loss Pro Forma NetIncomeLossProForma	1820000	USD
CY2012Q3	fang	Net Income Loss Pro Forma NetIncomeLossProForma	291000	USD
CY2012Q4	fang	Oil And Gas Joint Interest Billing Receivables And Other Current OilAndGasJointInterestBillingReceivablesAndOtherCurrent	5959000	USD
CY2011Q4	fang	Oil And Gas Joint Interest Billing Receivables And Other Current OilAndGasJointInterestBillingReceivablesAndOtherCurrent	3734000	USD
CY2010	fang	Oil And Gas Property Lease Operating Expense Related Party OilAndGasPropertyLeaseOperatingExpenseRelatedParty	1549000	USD
CY2012	fang	Oil And Gas Property Lease Operating Expense Related Party OilAndGasPropertyLeaseOperatingExpenseRelatedParty	1016000	USD
CY2011	fang	Oil And Gas Property Lease Operating Expense Related Party OilAndGasPropertyLeaseOperatingExpenseRelatedParty	2127000	USD
CY2012	fang	Oil Sales Revenue OilSalesRevenue	65704000	USD
CY2010	fang	Oil Sales Revenue OilSalesRevenue	75000	USD
CY2011	fang	Oil Sales Revenue OilSalesRevenue	2582000	USD
CY2012Q2	fang	Operating Lease Rent Expense Annual Percentage Increase Related Party OperatingLeaseRentExpenseAnnualPercentageIncreaseRelatedParty	0.04
CY2011Q2	fang	Operating Lease Rent Expense Annual Percentage Increase Related Party OperatingLeaseRentExpenseAnnualPercentageIncreaseRelatedParty	0.04
CY2011Q1	fang	Operating Lease Rent Expense Annual Percentage Increase Related Party OperatingLeaseRentExpenseAnnualPercentageIncreaseRelatedParty	0.03
CY2012Q3	fang	Operating Leases Rent Expense Monthly Percentage Increase OperatingLeasesRentExpenseMonthlyPercentageIncrease	0.09
CY2012	fang	Operation Loss Carryfoward Expiration Period OperationLossCarryfowardExpirationPeriod	P20Y
CY2012	fang	Other Nonoperating Income Related Party OtherNonoperatingIncomeRelatedParty	2132000	USD
CY2011	fang	Other Nonoperating Income Related Party OtherNonoperatingIncomeRelatedParty	0	USD
CY2010	fang	Other Nonoperating Income Related Party OtherNonoperatingIncomeRelatedParty	0	USD
CY2011	fang	Payments To Acquire Land And Other Capital Items PaymentsToAcquireLandAndOtherCapitalItems	4200000	USD
CY2012	fang	Period To Increase Aggregate Limit On Lease Payments PeriodToIncreaseAggregateLimitOnLeasePayments	P12M
CY2011	fang	Production Tax Expense Excluding Related Party ProductionTaxExpenseExcludingRelatedParty	574000	USD
CY2012	fang	Production Tax Expense Excluding Related Party ProductionTaxExpenseExcludingRelatedParty	3404000	USD
CY2010	fang	Production Tax Expense Excluding Related Party ProductionTaxExpenseExcludingRelatedParty	354000	USD
CY2010	fang	Production Tax Expense Related Party ProductionTaxExpenseRelatedParty	993000	USD
CY2011	fang	Production Tax Expense Related Party ProductionTaxExpenseRelatedParty	1792000	USD
CY2012	fang	Production Tax Expense Related Party ProductionTaxExpenseRelatedParty	287000	USD
CY2012Q4	fang	Related Party Transaction Annual Fee For Advisory Services With Related Party RelatedPartyTransactionAnnualFeeForAdvisoryServicesWithRelatedParty	500000	USD
CY2012Q4	fang	Related Party Transaction Original Term For Advisory Services With Related Party RelatedPartyTransactionOriginalTermForAdvisoryServicesWithRelatedParty	P2Y
CY2012	fang	Results Of Operations Income Tax Expense Pro Forma ResultsOfOperationsIncomeTaxExpenseProForma	10083000	USD
CY2012	fang	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs Pro Forma ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCostsProForma	18199000	USD
CY2010	fang	Revenue From Related Parties Liquid Natural Gas Sales Revenue RevenueFromRelatedPartiesLiquidNaturalGasSalesRevenue	0	USD
CY2011	fang	Revenue From Related Parties Liquid Natural Gas Sales Revenue RevenueFromRelatedPartiesLiquidNaturalGasSalesRevenue	1604000	USD
CY2012	fang	Revenue From Related Parties Liquid Natural Gas Sales Revenue RevenueFromRelatedPartiesLiquidNaturalGasSalesRevenue	3040000	USD
CY2010	fang	Revenue From Related Parties Natural Gas Sales RevenueFromRelatedPartiesNaturalGasSales	0	USD
CY2011	fang	Revenue From Related Parties Natural Gas Sales RevenueFromRelatedPartiesNaturalGasSales	586000	USD
CY2012	fang	Revenue From Related Parties Natural Gas Sales RevenueFromRelatedPartiesNaturalGasSales	1010000	USD
CY2010	fang	Revenue From Related Parties Oil And Gas Services Revenue RevenueFromRelatedPartiesOilAndGasServicesRevenue	811000	USD
CY2011	fang	Revenue From Related Parties Oil And Gas Services Revenue RevenueFromRelatedPartiesOilAndGasServicesRevenue	1491000	USD
CY2012	fang	Revenue From Related Parties Oil And Gas Services Revenue RevenueFromRelatedPartiesOilAndGasServicesRevenue	0	USD
CY2012	fang	Revenue From Related Parties Oil Sales Revenue RevenueFromRelatedPartiesOilSalesRevenue	0	USD
CY2011	fang	Revenue From Related Parties Oil Sales Revenue RevenueFromRelatedPartiesOilSalesRevenue	38873000	USD
CY2010	fang	Revenue From Related Parties Oil Sales Revenue RevenueFromRelatedPartiesOilSalesRevenue	21403000	USD
CY2012Q4	fang	Stockholders Equity And Members Equity StockholdersEquityAndMembersEquity	462068000	USD
CY2011Q4	fang	Stockholders Equity And Members Equity StockholdersEquityAndMembersEquity	129037000	USD
CY2012	dei	Amendment Flag AmendmentFlag	false
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
CY2012	dei	Document Period End Date DocumentPeriodEndDate	2012-12-31
CY2012	dei	Document Type DocumentType	10-K
CY2012	dei	Entity Central Index Key EntityCentralIndexKey	0001539838
CY2013Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	36986532	shares
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2012Q4	dei	Entity Public Float EntityPublicFloat	393334919	USD
CY2012	dei	Entity Registrant Name EntityRegistrantName	Diamondback Energy, Inc.
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes

Files In Submission

Name	View Source	Status
0001539838-13-000004-index-headers.html	Edgar Link	pending
0001539838-13-000004-index.html	Edgar Link	pending
0001539838-13-000004.txt	Edgar Link	pending
0001539838-13-000004-xbrl.zip	Edgar Link	pending
a12311210-k.htm	Edgar Link	pending
dbex10351stamendmenttomast.htm	Edgar Link	pending
dbex211significantsubsidia.htm	Edgar Link	pending
dbex31_1.htm	Edgar Link	pending
dbex31_2.htm	Edgar Link	pending
dbex32_1.htm	Edgar Link	pending
dbex32_2.htm	Edgar Link	pending
dbex99_1ryderscottletter.htm	Edgar Link	pending
fang-20121231.xml	Edgar Link	completed
fang-20121231.xsd	Edgar Link	pending
fang-20121231_cal.xml	Edgar Link	unprocessable
fang-20121231_def.xml	Edgar Link	unprocessable
fang-20121231_lab.xml	Edgar Link	unprocessable
fang-20121231_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$FANG
Diamondback Energy, Inc. Stock $fang

2012 Q4 Form 10-K Financial Statement

#000153983813000004 Filed on March 01, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FANG Diamondback Energy, Inc. Stock $fang

2012 Q4 Form 10-K Financial Statement

#000153983813000004 Filed on March 01, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FANG
Diamondback Energy, Inc. Stock $fang