$FANG
Diamondback Energy, Inc. Stock $fang

$fang Overview Financials Valuation SEC Filings Company Website

2013 Q4 Form 10-K Financial Statement

#000153983814000007 Filed on February 19, 2014

Income Statement

Concept	2013 Q4	2012 Q4	2012 Q3
Revenue	$75.91M	$25.77M	$16.81M
YoY Change	194.59%	77.81%	49.91%
Cost Of Revenue	$10.70M	$8.300M	$4.800M
YoY Change	28.92%	107.5%	29.73%
Gross Profit	$65.20M	$18.30M	$11.80M
YoY Change	256.28%	67.89%	61.64%
Gross Profit Margin	85.89%	71.02%	70.18%
Selling, General & Admin	$3.800M	$5.900M	$1.323M
YoY Change	-35.59%	293.33%	65.38%
% of Gross Profit	5.83%	32.24%	11.21%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$23.60M	$10.00M	$6.136M
YoY Change	136.0%	122.22%	65.84%
% of Gross Profit	36.2%	54.64%	52.0%
Operating Expenses	$27.50M	$15.90M	$12.73M
YoY Change	72.96%	165.0%	182.84%
Operating Profit	$37.73M	$2.177M	$4.086M
YoY Change	1632.94%	-54.87%	39.55%
Interest Expense	-$5.900M	$200.0K	$1.130M
YoY Change	-3050.0%	-101.46%	-261.43%
% of Operating Profit	-15.64%	9.19%	27.66%
Other Income/Expense, Net	$0.00	$400.0K	-$3.634M
YoY Change	-100.0%
Pretax Income	$31.80M	$2.829M	$452.0K
YoY Change	1024.07%	-132.15%	-78.48%
Income Tax	$11.69M	$54.90M	$0.00
% Of Pretax Income	36.76%	1940.72%	0.0%
Net Earnings	$20.12M	-$52.07M	$452.0K
YoY Change	-138.65%	487.21%	-79.5%
Net Earnings / Revenue	26.51%	-202.1%	2.69%
Basic Earnings Per Share	$0.43	$0.05	$0.02
Diluted Earnings Per Share	$0.42	$0.05	$0.02
COMMON SHARES
Basic Shares Outstanding	47.07M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2013 Q4	2012 Q4	2012 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$16.00M	$26.00M	$1.000M
YoY Change	-38.46%	271.43%	-66.67%
Cash & Equivalents	$15.56M	$26.36M	$1.442M
Short-Term Investments
Other Short-Term Assets	$1.397M	$3.000M	$1.000M
YoY Change	-53.43%		0.0%
Inventory	$5.631M	$6.195M	$6.000M
Prepaid Expenses
Receivables	$37.97M	$15.00M	$18.00M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$61.97M	$50.28M	$27.00M
YoY Change	23.26%	63.17%	-18.18%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.446B	$554.2M	$277.0M
YoY Change	160.96%	150.62%	45.03%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments		$0.00	$0.00
YoY Change		-100.0%	-100.0%
Other Assets	$13.09M	$2.184M	$4.000M
YoY Change	499.4%	67.1%	300.0%
Total Long-Term Assets	$1.460B	$556.4M	$281.0M
YoY Change	162.33%	139.05%	42.64%
TOTAL ASSETS
Total Short-Term Assets	$61.97M	$50.28M	$27.00M
Total Long-Term Assets	$1.460B	$556.4M	$281.0M
Total Assets	$1.522B	$606.7M	$308.0M
YoY Change	150.8%	130.18%	33.91%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$3.000M	$31.00M	$24.00M
YoY Change	-90.32%	158.33%	33.33%
Accrued Expenses	$109.0M	$40.00M	$18.00M
YoY Change	172.5%	110.53%	28.57%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$10.00M
YoY Change
Long-Term Debt Due	$0.00	$145.0K
YoY Change	-100.0%
Total Short-Term Liabilities	$121.3M	$79.23M	$60.00M
YoY Change	53.12%	87.32%	81.82%
LONG-TERM LIABILITIES
Long-Term Debt	$460.0M	$193.0K	$120.0M
YoY Change	238241.97%	-99.77%	50.0%
Other Long-Term Liabilities	$3.000M	$3.000M	$3.000M
YoY Change	0.0%	-57.14%	50.0%
Total Long-Term Liabilities	$460.0M	$193.0K	$123.0M
YoY Change	238241.97%	-99.79%	50.0%
TOTAL LIABILITIES
Total Short-Term Liabilities	$121.3M	$79.23M	$60.00M
Total Long-Term Liabilities	$460.0M	$193.0K	$123.0M
Total Liabilities	$676.1M	$144.6M	$183.0M
YoY Change	367.44%	7.5%	59.13%
SHAREHOLDERS EQUITY
Retained Earnings	$2.513M	-$52.07M
YoY Change	-104.83%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$845.5M	$462.1M	$125.0M
YoY Change
Total Liabilities & Shareholders Equity	$1.522B	$606.7M	$308.0M
YoY Change	150.8%	130.18%	33.91%

Cashflow Statement

Concept	2013 Q4	2012 Q4	2012 Q3
OPERATING ACTIVITIES
Net Income	$20.12M	-$52.07M	$452.0K
YoY Change	-138.65%	487.21%	-79.5%
Depreciation, Depletion And Amortization	$23.60M	$10.00M	$6.136M
YoY Change	136.0%	122.22%	65.84%
Cash From Operating Activities	$64.20M	$17.90M	$9.100M
YoY Change	258.66%	5.29%	1720.0%
INVESTING ACTIVITIES
Capital Expenditures	-$110.0M	-$32.30M	-$24.80M
YoY Change	240.56%	5.56%	37.02%
Acquisitions
YoY Change
Other Investing Activities	$0.00	-$65.50M	-$900.0K
YoY Change	-100.0%		-115.0%
Cash From Investing Activities	-$109.9M	-$97.80M	-$25.70M
YoY Change	12.37%	219.61%	112.4%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	8.300M	104.8M	15.70M
YoY Change	-92.08%	502.3%	27.64%
NET CHANGE
Cash From Operating Activities	64.20M	17.90M	9.100M
Cash From Investing Activities	-109.9M	-97.80M	-25.70M
Cash From Financing Activities	8.300M	104.8M	15.70M
Net Change In Cash	-37.40M	24.90M	-900.0K
YoY Change	-250.2%	555.26%	-228.57%
FREE CASH FLOW
Cash From Operating Activities	$64.20M	$17.90M	$9.100M
Capital Expenditures	-$110.0M	-$32.30M	-$24.80M
Free Cash Flow	$174.2M	$50.20M	$33.90M
YoY Change	247.01%	5.46%	82.26%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	17000	USD
CY2012Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	18813000	USD
CY2012Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	12141000	USD
CY2013Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	2679000	USD
CY2013Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	1303000	USD
CY2012Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	772000	USD
CY2011	us-gaap	Accretion Of Discount AccretionOfDiscount	33900000	USD
CY2013	us-gaap	Accretion Of Discount AccretionOfDiscount	57988000	USD
CY2012	us-gaap	Accretion Of Discount AccretionOfDiscount	36461000	USD
CY2012Q4	us-gaap	Accumulated Amortization Deferred Finance Costs AccumulatedAmortizationDeferredFinanceCosts	782000	USD
CY2013Q4	us-gaap	Accumulated Amortization Deferred Finance Costs AccumulatedAmortizationDeferredFinanceCosts	1798000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	212236000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	145837000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	513772000	USD
CY2013Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	842557000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2724000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2535000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	749000	USD
CY2013Q4	us-gaap	Amortization Expense Per Physical Unit Of Production AmortizationExpensePerPhysicalUnitOfProduction	24.63
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
CY2011	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	250000	USD
CY2013	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1018000	USD
CY2012	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	494000	USD
CY2010Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	742000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	2145000	USD
CY2013Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	3029000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1104000	USD
CY2011	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	65000	USD
CY2012	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	98000	USD
CY2013	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	201000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	20000	USD
CY2013Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	40000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	0	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	201000	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	297000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	226000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	5000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	14000	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	0	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
CY2013	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	0	USD
CY2013Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	2989000	USD
CY2012Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	2125000	USD
CY2011Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	1104000	USD
CY2012Q4	us-gaap	Assets Assets	606701000	USD
CY2013Q4	us-gaap	Assets Assets	1521614000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	61968000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	50275000	USD
CY2012	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	0.60
CY2012Q2	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	0.60
CY2012Q4	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	0.05
CY2012Q1	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	0.06
CY2012Q3	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	0.02
CY2012Q4	us-gaap	Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued	7914000	shares
CY2012Q4	us-gaap	Business Acquisition Share Price BusinessAcquisitionSharePrice	17.50
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
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 Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	7666000	USD
CY2012	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	-29764000	USD
CY2012	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	97455000	USD
CY2011	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	72418000	USD
CY2012Q4	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	220636000	USD
CY2012Q4	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	138496000	USD
CY2012Q4	us-gaap	Business Combination Consideration Transferred Liabilities Incurred BusinessCombinationConsiderationTransferredLiabilitiesIncurred	63590000	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 Deferred Tax Liabilities Noncurrent BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent	5935000	USD
CY2012Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	220636000	USD
CY2013Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	210837000	USD
CY2012Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	145102000	USD
CY2012Q4	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization Cumulative CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative	121245000	USD
CY2013Q4	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization Cumulative CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative	369561000	USD
CY2012Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	697742000	USD
CY2013Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	1648360000	USD
CY2013Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	1437523000	USD
CY2012Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	552640000	USD
CY2012Q4	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	576497000	USD
CY2013Q4	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	1278799000	USD
CY2012Q4	us-gaap	Capitalized Costs Unproved Properties CapitalizedCostsUnprovedProperties	121245000	USD
CY2013Q4	us-gaap	Capitalized Costs Unproved Properties CapitalizedCostsUnprovedProperties	369561000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	15555000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	26358000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4119000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	6959000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	2840000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-10803000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	19399000	USD
CY2013	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0	USD
CY2012	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0	USD
CY2011	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	10000	USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	47106216	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	36986532	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	47106216	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	36986532	shares
CY2012Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	370000	USD
CY2013Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	471000	USD
CY2013	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<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;">Concentrations </font></div><div style="line-height:120%;padding-top:5px;text-align:left;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, 2013</font><font style="font-family:inherit;font-size:10pt;"> two purchasers accounted for more than 10% of our revenue: Plains Marketing, L.P. (</font><font style="font-family:inherit;font-size:10pt;">37%</font><font style="font-family:inherit;font-size:10pt;">); and Shell Trading (US) Company (</font><font style="font-family:inherit;font-size:10pt;">37%</font><font style="font-family:inherit;font-size:10pt;">). For the </font><font style="font-family:inherit;font-size:10pt;">year ended December 31, 2012</font><font style="font-family:inherit;font-size:10pt;">, three purchasers accounted for more than 10% of our revenue: Plains Marketing, L.P. (</font><font style="font-family:inherit;font-size:10pt;">53%</font><font style="font-family:inherit;font-size:10pt;">); Occidental Energy Marketing, Inc. (</font><font style="font-family:inherit;font-size:10pt;">16%</font><font style="font-family:inherit;font-size:10pt;">); and Andrews Oil Buyers, Inc. (</font><font style="font-family:inherit;font-size:10pt;">10%</font><font style="font-family:inherit;font-size:10pt;">). For the </font><font style="font-family:inherit;font-size:10pt;">year ended December 31, 2011</font><font style="font-family:inherit;font-size:10pt;">, Windsor Midstream LLC, a related party, accounted for </font><font style="font-family:inherit;font-size:10pt;">79%</font><font style="font-family:inherit;font-size:10pt;"> of the Company’s revenue. 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>
CY2013Q4	us-gaap	Contractual Obligation ContractualObligation	3600000	USD
CY2012	us-gaap	Cost Of Services Oil And Gas CostOfServicesOilAndGas	0	USD
CY2011	us-gaap	Cost Of Services Oil And Gas CostOfServicesOilAndGas	1207000	USD
CY2013	us-gaap	Cost Of Services Oil And Gas CostOfServicesOilAndGas	0	USD
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 CostsIncurredAcquisitionOfOilAndGasProperties	90601000	USD
CY2013	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	950618000	USD
CY2011	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
CY2013	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	339130000	USD
CY2012	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	117395000	USD
CY2011	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	3704000	USD
CY2013	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	279402000	USD
CY2011	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	297000	USD
CY2012	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	948000	USD
CY2013	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	697000	USD
CY2012	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	106261000	USD
CY2011	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	75374000	USD
CY2013	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	88460000	USD
CY2011	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	11226000	USD
CY2012	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	17547000	USD
CY2013	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	242929000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	191000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	191000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	0	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	0	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	30768000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	53319000	USD
CY2012Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	1115000	USD
CY2013Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	12458000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	31563000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	54903000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	795000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1584000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	0	USD
CY2012Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	1857000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	112000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	1857000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	2507000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	557000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	265000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	1857000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	0	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1577000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	191000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	0	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	930000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	346000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	91652000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	60838000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	0	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	153000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Gross Current DeferredTaxLiabilitiesGrossCurrent	153000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Gross Current DeferredTaxLiabilitiesGrossCurrent	0	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	92321000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	65202000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	62695000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	91764000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	0	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	566000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	92321000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	64636000	USD
CY2013	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	262000	USD
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	86000	USD
CY2013	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2013	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	1
CY2012	us-gaap	Depreciation Depreciation	501000	USD
CY2011	us-gaap	Depreciation Depreciation	727000	USD
CY2013	us-gaap	Depreciation Depreciation	776000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	26273000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	66597000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	15601000	USD
CY2013Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	567000	USD
CY2013Q4	us-gaap	Derivative Assets DerivativeAssets	431000	USD
CY2012Q4	us-gaap	Derivative Assets DerivativeAssets	0	USD
CY2013Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	213000	USD
CY2012Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	0	USD
CY2012Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	0	USD
CY2013Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	218000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	998000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	431000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	5205000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	5205000	USD
CY2013	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-1872000	USD
CY2012	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	2617000	USD
CY2011	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-13009000	USD
CY2011	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-13009000	USD
CY2013	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	5346000	USD
CY2012	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	2617000	USD
CY2012Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	5205000	USD
CY2013Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	0	USD
CY2012Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	4817000	USD
CY2013Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	0	USD
CY2013Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	0	USD
CY2012Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	388000	USD
CY2012Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2012	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	0.60
CY2012Q1	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	0.06
CY2012Q4	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	0.05
CY2012Q3	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	0.02
CY2012Q2	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	0.60
CY2013	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2012	us-gaap	Dilutive Securities DilutiveSecurities	0	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
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
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	1311976000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	2049520000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	2769485000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	4604241000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts1	-541445000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts1	-410350000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts1	-517075000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense1	-674260000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense1	-334903000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense1	0	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	978768000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	1036506000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	2287615000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts1	-773611000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts1	-806895000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs1 DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts1	-497808000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	364612000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	975639000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	367220000	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.30
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.15
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.37
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.43
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.29
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.15
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.36
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2012	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	2477000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1752000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	438000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2013	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	749000	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	0	USD
CY2013	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	749000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	0	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
CY2013	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	552450000	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
CY2013	us-gaap	Gain Loss On Price Risk Derivative Instruments Not Designated As Hedging Instruments GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments	5346000	USD
CY2013	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	39000	USD
CY2012	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	37000	USD
CY2011	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	23000	USD
CY2013	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	237000	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
CY2013	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2011	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2012	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	18382000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-386000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	86341000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	452000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1477000	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
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-7000	USD
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-67000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31754000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	54903000	USD
CY2012Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	54903000	USD
CY2013Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7802000	USD
CY2012Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2012Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2013Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3162000	USD
CY2013Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11691000	USD
CY2013Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9099000	USD
CY2012Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2012	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	5717000	USD
CY2013	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	0	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	6434000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	30231000	USD
CY2013	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1006000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	2000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	517000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	42000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	20588000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	2656000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	7151000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable Related Parties IncreaseDecreaseInAccountsPayableRelatedParties	-1218000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable Related Parties IncreaseDecreaseInAccountsPayableRelatedParties	-128000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable Related Parties IncreaseDecreaseInAccountsPayableRelatedParties	830000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1547000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	19973000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	5036000	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
CY2013	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	532000	USD
CY2013	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-5822000	USD
CY2012	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	8309000	USD
CY2011	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-82855000	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
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
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
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-554000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	639000	USD
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	872000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	271000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	606000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	202000	USD
CY2013	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	305109000	USD
CY2012	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	107897000	USD
CY2011	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	0	USD
CY2013	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	3951000	USD
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	USD
CY2011	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	USD
CY2012	us-gaap	Interest Costs Incurred InterestCostsIncurred	3610000	USD
CY2013	us-gaap	Interest Costs Incurred InterestCostsIncurred	12010000	USD
CY2011	us-gaap	Interest Costs Incurred InterestCostsIncurred	2528000	USD
CY2012	us-gaap	Interest Expense InterestExpense	3610000	USD
CY2013	us-gaap	Interest Expense InterestExpense	8059000	USD
CY2011	us-gaap	Interest Expense InterestExpense	2528000	USD
CY2012	us-gaap	Interest Expense Debt InterestExpenseDebt	3610000	USD
CY2011	us-gaap	Interest Expense Debt InterestExpenseDebt	2528000	USD
CY2013	us-gaap	Interest Expense Debt InterestExpenseDebt	8059000	USD
CY2011	us-gaap	Interest Paid InterestPaid	2265000	USD
CY2013	us-gaap	Interest Paid InterestPaid	404000	USD
CY2012	us-gaap	Interest Paid InterestPaid	3017000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	404000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	3017000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	2265000	USD
CY2013Q4	us-gaap	Interest Payable Current InterestPayableCurrent	9918000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	0	USD
CY2012Q4	us-gaap	Inventory Net InventoryNet	6195000	USD
CY2013Q4	us-gaap	Inventory Net InventoryNet	5631000	USD
CY2013	us-gaap	Investment Income Interest InvestmentIncomeInterest	1000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	3000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	11000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	547000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	74000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	571000	USD
CY2012	us-gaap	Lease Operating Expense LeaseOperatingExpense	14231000	USD
CY2013	us-gaap	Lease Operating Expense LeaseOperatingExpense	19991000	USD
CY2011	us-gaap	Lease Operating Expense LeaseOperatingExpense	7804000	USD
CY2011Q1	us-gaap	Lessee Leasing Arrangements Operating Leases Term Of Contract LesseeLeasingArrangementsOperatingLeasesTermOfContract	P84M
CY2013Q4	us-gaap	Liabilities Liabilities	676073000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	144633000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1521614000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	606701000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	121320000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	79232000	USD
CY2013Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	225000000	USD
CY2013Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	600000000	USD
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	338000	USD
CY2013Q4	us-gaap	Long Term Debt LongTermDebt	460000000	USD
CY2013Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2012Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	145000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	193000	USD
CY2013Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	460000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	52950000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	773560000	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
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-183078000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-940140000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	49692000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	30998000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	155777000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	-36521000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	-386000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	54587000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	5396000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	13624000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	452000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	-52074000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	14471000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	1477000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	14596000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	20124000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	54587000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	54587000	USD
CY2011	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	82364000	USD
CY2013	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	51828000	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 Payables Assumed1 NoncashOrPartNoncashAcquisitionPayablesAssumed1	0	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Payables Assumed1 NoncashOrPartNoncashAcquisitionPayablesAssumed1	18550000	USD
CY2013	us-gaap	Noncash Or Part Noncash Acquisition Payables Assumed1 NoncashOrPartNoncashAcquisitionPayablesAssumed1	0	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-8853000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-15533000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	1075000	USD
CY2012	us-gaap	Notes Issued1 NotesIssued1	411000	USD
CY2013	us-gaap	Notes Issued1 NotesIssued1	0	USD
CY2011	us-gaap	Notes Issued1 NotesIssued1	0	USD
CY2012Q4	us-gaap	Notes Payable Current NotesPayableCurrent	145000	USD
CY2013Q4	us-gaap	Notes Payable Current NotesPayableCurrent	0	USD
CY2013Q4	us-gaap	Oil And Gas Property Full Cost Method Gross OilAndGasPropertyFullCostMethodGross	1648360000	USD
CY2012Q4	us-gaap	Oil And Gas Property Full Cost Method Gross OilAndGasPropertyFullCostMethodGross	697742000	USD
CY2011	us-gaap	Oil And Gas Revenue OilAndGasRevenue	49366000	USD
CY2013	us-gaap	Oil And Gas Revenue OilAndGasRevenue	208002000	USD
CY2012	us-gaap	Oil And Gas Revenue OilAndGasRevenue	74962000	USD
CY2012Q1	us-gaap	Oil And Gas Revenue OilAndGasRevenue	16351000	USD
CY2013Q2	us-gaap	Oil And Gas Revenue OilAndGasRevenue	45394000	USD
CY2012Q3	us-gaap	Oil And Gas Revenue OilAndGasRevenue	16814000	USD
CY2012Q4	us-gaap	Oil And Gas Revenue OilAndGasRevenue	25767000	USD
CY2013Q3	us-gaap	Oil And Gas Revenue OilAndGasRevenue	57791000	USD
CY2013Q4	us-gaap	Oil And Gas Revenue OilAndGasRevenue	75908000	USD
CY2013Q1	us-gaap	Oil And Gas Revenue OilAndGasRevenue	28909000	USD
CY2012Q2	us-gaap	Oil And Gas Revenue OilAndGasRevenue	16030000	USD
CY2011	us-gaap	Operating Expenses OperatingExpenses	34219000	USD
CY2012	us-gaap	Operating Expenses OperatingExpenses	57655000	USD
CY2013	us-gaap	Operating Expenses OperatingExpenses	112808000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	17307000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	95194000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	15147000	USD
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	29423000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	6737000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	2177000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	4307000	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	37726000	USD
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	19383000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	4086000	USD
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	8662000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	2180000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	667000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	25000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	301000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	505000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	682000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	0	USD
CY2013Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	5833	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	10649000	USD
CY2013Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	34750000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2184000	USD
CY2013Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	13091000	USD
CY2013Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	74649000	USD
CY2012Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	29397000	USD
CY2012Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	1352000	USD
CY2013Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	3763000	USD
CY2012	us-gaap	Partners Capital Account Contributions PartnersCapitalAccountContributions	4008000	USD
CY2011	us-gaap	Partners Capital Account Contributions PartnersCapitalAccountContributions	13517000	USD
CY2012	us-gaap	Partners Capital Account Distributions PartnersCapitalAccountDistributions	10504000	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
CY2013	us-gaap	Payments For Derivative Instrument Investing Activities PaymentsForDerivativeInstrumentInvestingActivities	289000	USD
CY2011	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	770000	USD
CY2012	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	450000	USD
CY2013	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	12361000	USD
CY2011	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	30000	USD
CY2013	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1009000	USD
CY2012	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	2887000	USD
CY2011	us-gaap	Payments To Acquire Mineral Rights PaymentsToAcquireMineralRights	0	USD
CY2012	us-gaap	Payments To Acquire Mineral Rights PaymentsToAcquireMineralRights	0	USD
CY2013	us-gaap	Payments To Acquire Mineral Rights PaymentsToAcquireMineralRights	444083000	USD
CY2013	us-gaap	Payments To Acquire Oil And Gas Equipment PaymentsToAcquireOilAndGasEquipment	5127000	USD
CY2012	us-gaap	Payments To Acquire Oil And Gas Equipment PaymentsToAcquireOilAndGasEquipment	0	USD
CY2011	us-gaap	Payments To Acquire Oil And Gas Equipment PaymentsToAcquireOilAndGasEquipment	0	USD
CY2011	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	0	USD
CY2012	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	11707000	USD
CY2013	us-gaap	Payments To Acquire Oil And Gas Property PaymentsToAcquireOilAndGasProperty	177343000	USD
CY2013	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	2234000	USD
CY2011	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	7065000	USD
CY2012	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	1102000	USD
CY2012	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	90415000	USD
CY2011	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	58160000	USD
CY2013	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	278809000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1053000	USD
CY2013Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1184000	USD
CY2012	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-88849000	USD
CY2013	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-76631000	USD
CY2011	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-87530000	USD
CY2013	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:5px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Reclassifications</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:6px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company has reclassified certain prior year amounts to conform with the current year’s presentation. The Company has reclassified ad valorem taxes from lease operating expenses to production and ad valorem taxes. </font></div></div>
CY2012	us-gaap	Pro Forma Weighted Average Shares Outstanding Diluted ProFormaWeightedAverageSharesOutstandingDiluted	19724000	shares
CY2012	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	2326000	USD
CY2011	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	4203000	USD
CY2013	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	322680000	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	237164000	USD
CY2011	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	450000000	USD
CY2012	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	15000000	USD
CY2013	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	59000000	USD
CY2011	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	40233000	USD
CY2013	us-gaap	Proceeds From Partnership Contribution ProceedsFromPartnershipContribution	0	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
CY2013	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	0	USD
CY2011	us-gaap	Related Party Transaction Selling General And Administrative Expenses From Transactions With Related Party RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty	3160000	USD
CY2013	us-gaap	Related Party Transaction Selling General And Administrative Expenses From Transactions With Related Party RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty	1166000	USD
CY2012	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	100000000	USD
CY2012	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2011	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	6010000	USD
CY2013	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	72000	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
CY2012	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2011	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2013	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	3501000	USD
CY2012	us-gaap	Production Tax Expense ProductionTaxExpense	5237000	USD
CY2011	us-gaap	Production Tax Expense ProductionTaxExpense	3032000	USD
CY2013	us-gaap	Production Tax Expense ProductionTaxExpense	12899000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	554242000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1446337000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	2337000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	4071000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	2672000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	1602000	USD
CY2011	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2012	us-gaap	Related Party Transaction Selling General And Administrative Expenses From Transactions With Related Party RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty	1198000	USD
CY2013	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	49000000	USD
CY2012	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	30050000	USD
CY2013	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	0	USD
CY2011	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	0	USD
CY2011	us-gaap	Results Of Operations Accretion Of Asset Retirement Obligations ResultsOfOperationsAccretionOfAssetRetirementObligations	65000	USD
CY2013	us-gaap	Results Of Operations Accretion Of Asset Retirement Obligations ResultsOfOperationsAccretionOfAssetRetirementObligations	201000	USD
CY2012	us-gaap	Results Of Operations Accretion Of Asset Retirement Obligations ResultsOfOperationsAccretionOfAssetRetirementObligations	98000	USD
CY2011	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	15377000	USD
CY2012	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	25772000	USD
CY2013	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	65821000	USD
CY2012	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	25772000	USD
CY2013	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	65821000	USD
CY2011	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	15377000	USD
CY2011	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	0	USD
CY2013	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	31754000	USD
CY2012	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	54903000	USD
CY2012	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	-26719000	USD
CY2013	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	75252000	USD
CY2011	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	19268000	USD
CY2013	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	21157000	USD
CY2012	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	15247000	USD
CY2011	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	9931000	USD
CY2012	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	74962000	USD
CY2013	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	208002000	USD
CY2011	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	47875000	USD
CY2012	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	424000	USD
CY2013	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	918000	USD
CY2011	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	202000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-52074000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2513000	USD
CY2012	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-22882000	USD
CY2013	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-126993000	USD
CY2011	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-98533000	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
CY2013	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	173946000	USD
CY2013Q4	us-gaap	Significant Supply Commitment Remaining Minimum Amount Committed SignificantSupplyCommitmentRemainingMinimumAmountCommitted	4729000	USD
CY2011	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	495000	USD
CY2012	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	9178000	USD
CY2013	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	9870000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	544000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	1752000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	3482000	USD
CY2011	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-35655000	USD
CY2012	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-39054000	USD
CY2013	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	39744000	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
CY2013Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	975639000	USD
CY2013	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2012	us-gaap	Stock Issued1 StockIssued1	138496000	USD
CY2011	us-gaap	Stock Issued1 StockIssued1	0	USD
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
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	321912000	USD
CY2012	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	0	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
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	845541000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	462068000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	845541000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	462068000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	115362000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	129037000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2013	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	0	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	0	USD
CY2013	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:5px;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:5px;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:12px;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	19721000	shares
CY2013	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	240000	shares
CY2012	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	42255000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	42015000	shares
CY2012Q4	fang	Accounts Receivable Oil And Natural Gas Sales Current AccountsReceivableOilAndNaturalGasSalesCurrent	8081000	USD
CY2013Q4	fang	Accounts Receivable Oil And Natural Gas Sales Current AccountsReceivableOilAndNaturalGasSalesCurrent	23533000	USD
CY2012	fang	Asset Retirement Obligation Additional Liability Incurred AssetRetirementObligationAdditionalLiabilityIncurred	562000	USD
CY2013	fang	Asset Retirement Obligation Additional Liability Incurred AssetRetirementObligationAdditionalLiabilityIncurred	471000	USD
CY2011	fang	Asset Retirement Obligation Additional Liability Incurred AssetRetirementObligationAdditionalLiabilityIncurred	0	USD
CY2012	fang	Asset Retirement Obligation Obligation Incurred Revision Of Estimate AssetRetirementObligationObligationIncurredRevisionOfEstimate	386000	USD
CY2013	fang	Asset Retirement Obligation Obligation Incurred Revision Of Estimate AssetRetirementObligationObligationIncurredRevisionOfEstimate	226000	USD
CY2011	fang	Asset Retirement Obligation Obligation Incurred Revision Of Estimate AssetRetirementObligationObligationIncurredRevisionOfEstimate	297000	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 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
CY2013	fang	Capitalized Costs Proved Oil And Natural Gas Properties Net Discount Percentage CapitalizedCostsProvedOilAndNaturalGasPropertiesNetDiscountPercentage	0.10
CY2011	fang	Cost Of Services Oil And Gas Related Party CostOfServicesOilAndGasRelatedParty	526000	USD
CY2013	fang	Cost Of Services Oil And Gas Related Party CostOfServicesOilAndGasRelatedParty	0	USD
CY2012	fang	Cost Of Services Oil And Gas Related Party CostOfServicesOilAndGasRelatedParty	0	USD
CY2013	fang	Costs Incurred Exploration And Development Costs CostsIncurredExplorationAndDevelopmentCosts	5348000	USD
CY2011	fang	Costs Incurred Exploration And Development Costs CostsIncurredExplorationAndDevelopmentCosts	871000	USD
CY2012	fang	Costs Incurred Exploration And Development Costs CostsIncurredExplorationAndDevelopmentCosts	4872000	USD
CY2012	fang	Deferred Income Tax Expense Benefit Continuing Operations DeferredIncomeTaxExpenseBenefitContinuingOperations	761000	USD
CY2012	fang	Deferred Income Tax Expense Benefit Merger DeferredIncomeTaxExpenseBenefitMerger	54142000	USD
CY2013Q4	fang	Deferred Revenue And Royalties Payable Current DeferredRevenueAndRoyaltiesPayableCurrent	9225000	USD
CY2012Q4	fang	Deferred Revenue And Royalties Payable Current DeferredRevenueAndRoyaltiesPayableCurrent	3270000	USD
CY2013Q4	fang	Deferred Tax Assets Other Current DeferredTaxAssetsOtherCurrent	265000	USD
CY2012Q4	fang	Deferred Tax Assets Other Current DeferredTaxAssetsOtherCurrent	0	USD
CY2012Q4	fang	Deferred Tax Assets Other Noncurrent DeferredTaxAssetsOtherNoncurrent	0	USD
CY2013Q4	fang	Deferred Tax Assets Other Noncurrent DeferredTaxAssetsOtherNoncurrent	20000	USD
CY2013	fang	Defined Contribution Plan Vesting Period DefinedContributionPlanVestingPeriod	P4Y
CY2012	fang	Depreciation Depletion And Amortization Net Of Depreciation Reported In Oil And Natural Gas Services DepreciationDepletionAndAmortizationNetOfDepreciationReportedInOilAndNaturalGasServices	26273000	USD
CY2013	fang	Depreciation Depletion And Amortization Net Of Depreciation Reported In Oil And Natural Gas Services DepreciationDepletionAndAmortizationNetOfDepreciationReportedInOilAndNaturalGasServices	66597000	USD
CY2011	fang	Depreciation Depletion And Amortization Net Of Depreciation Reported In Oil And Natural Gas Services DepreciationDepletionAndAmortizationNetOfDepreciationReportedInOilAndNaturalGasServices	16104000	USD
CY2011	fang	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Taxes DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionTaxes	-104856000	USD
CY2013	fang	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Taxes DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionTaxes	-318396000	USD
CY2012	fang	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Taxes DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionTaxes	-140758000	USD
CY2013	fang	Distribution Of Equity Method Investments DistributionOfEquityMethodInvestments	0	USD
CY2011	fang	Distribution Of Equity Method Investments DistributionOfEquityMethodInvestments	0	USD
CY2012	fang	Distribution Of Equity Method Investments DistributionOfEquityMethodInvestments	10504000	USD
CY2013Q3	fang	Fan Gmineralinterestareadevelopedgross FANGmineralinterestareadevelopedgross	15000	acre
CY2013Q3	fang	Fan Gmineralinterestareadevelopednet FANGmineralinterestareadevelopednet	12500	acre
CY2012	fang	Gain Loss On Price Risk Derivative Instruments Settled During Period Not Designated As Hedging Instruments GainLossOnPriceRiskDerivativeInstrumentsSettledDuringPeriodNotDesignatedAsHedgingInstruments	-5440000	USD
CY2011	fang	Gain Loss On Price Risk Derivative Instruments Settled During Period Not Designated As Hedging Instruments GainLossOnPriceRiskDerivativeInstrumentsSettledDuringPeriodNotDesignatedAsHedgingInstruments	-37000	USD
CY2013	fang	Gain Loss On Price Risk Derivative Instruments Settled During Period Not Designated As Hedging Instruments GainLossOnPriceRiskDerivativeInstrumentsSettledDuringPeriodNotDesignatedAsHedgingInstruments	-7218000	USD
CY2013	fang	Gas Gathering Transportation Marketing And Processing Costs Related Party GasGatheringTransportationMarketingAndProcessingCostsRelatedParty	681000	USD
CY2012	fang	Gas Gathering Transportation Marketing And Processing Costs Related Party GasGatheringTransportationMarketingAndProcessingCostsRelatedParty	300000	USD
CY2011	fang	Gas Gathering Transportation Marketing And Processing Costs Related Party GasGatheringTransportationMarketingAndProcessingCostsRelatedParty	149000	USD
CY2013	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
CY2012Q4	fang	Income Tax Expense Benefit Pro Forma IncomeTaxExpenseBenefitProForma	1009000	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
CY2013	fang	Income Tax Reconciliation Income Prior To Merger Oil And Gas Properties IncomeTaxReconciliationIncomePriorToMergerOilAndGasProperties	0	USD
CY2012	fang	Income Tax Reconciliation Income Prior To Merger Oil And Gas Properties IncomeTaxReconciliationIncomePriorToMergerOilAndGasProperties	54142000	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
CY2013	fang	Increase Decrease In Deferred Revenue And Royalties Payable IncreaseDecreaseInDeferredRevenueAndRoyaltiesPayable	5955000	USD
CY2013	fang	Increase Decrease In Royalties Payable Related Party IncreaseDecreaseInRoyaltiesPayableRelatedParty	0	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
CY2012Q4	fang	Lease Operating Expense Accrual Current LeaseOperatingExpenseAccrualCurrent	4737000	USD
CY2013Q4	fang	Lease Operating Expense Accrual Current LeaseOperatingExpenseAccrualCurrent	4538000	USD
CY2013	fang	Line Of Credit Facility Borrowing Base Number Of Redeterminations LineOfCreditFacilityBorrowingBaseNumberOfRedeterminations	3
CY2013	fang	Line Of Credit Facility Borrowing Base Period Of Redetermination LineOfCreditFacilityBorrowingBasePeriodOfRedetermination	P12M
CY2013Q4	fang	Line Of Credit Facility Covenant Terms Decrease Of Borrowing Base Upon Issuance Of Additional Indebtedness Percentage LineOfCreditFacilityCovenantTermsDecreaseOfBorrowingBaseUponIssuanceOfAdditionalIndebtednessPercentage	0.25
CY2013Q4	fang	Line Of Credit Facility Covenant Terms Maximum Issuance Of Additional Indebtedness LineOfCreditFacilityCovenantTermsMaximumIssuanceOfAdditionalIndebtedness	750000000	USD
CY2011	fang	Liquid Natural Gas Sales Revenue LiquidNaturalGasSalesRevenue	3169000	USD
CY2013	fang	Liquid Natural Gas Sales Revenue LiquidNaturalGasSalesRevenue	8304000	USD
CY2012	fang	Liquid Natural Gas Sales Revenue LiquidNaturalGasSalesRevenue	3839000	USD
CY2011	fang	Natural Gas Sales Revenue NaturalGasSalesRevenue	1061000	USD
CY2012	fang	Natural Gas Sales Revenue NaturalGasSalesRevenue	1369000	USD
CY2013	fang	Natural Gas Sales Revenue NaturalGasSalesRevenue	3715000	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
CY2012Q3	fang	Net Income Loss Pro Forma NetIncomeLossProForma	291000	USD
CY2012Q2	fang	Net Income Loss Pro Forma NetIncomeLossProForma	8767000	USD
CY2012Q4	fang	Net Income Loss Pro Forma NetIncomeLossProForma	1820000	USD
CY2012Q1	fang	Net Income Loss Pro Forma NetIncomeLossProForma	951000	USD
CY2013Q4	fang	Oil And Gas Joint Interest Billing Receivables And Other Current OilAndGasJointInterestBillingReceivablesAndOtherCurrent	14437000	USD
CY2012Q4	fang	Oil And Gas Joint Interest Billing Receivables And Other Current OilAndGasJointInterestBillingReceivablesAndOtherCurrent	5959000	USD
CY2013	fang	Oil And Gas Property Lease Operating Expense Related Party OilAndGasPropertyLeaseOperatingExpenseRelatedParty	1166000	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
CY2011	fang	Oil Sales Revenue OilSalesRevenue	2582000	USD
CY2012	fang	Oil Sales Revenue OilSalesRevenue	65704000	USD
CY2013	fang	Oil Sales Revenue OilSalesRevenue	188753000	USD
CY2012Q2	fang	Oiland Gas Delivery Commitmentsand Contracts Termof Contract OilandGasDeliveryCommitmentsandContractsTermofContract	P5Y
CY2013Q4	fang	Operating Lease Rent Expense Annual Percentage Increase Related Party OperatingLeaseRentExpenseAnnualPercentageIncreaseRelatedParty	0.03
CY2013	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
CY2013	fang	Other Nonoperating Income Related Party OtherNonoperatingIncomeRelatedParty	1077000	USD
CY2012	fang	Paymentsto Acquire Oiland Gas Property Related Party PaymentstoAcquireOilandGasPropertyRelatedParty	63590000	USD
CY2011	fang	Paymentsto Acquire Oiland Gas Property Related Party PaymentstoAcquireOilandGasPropertyRelatedParty	0	USD
CY2013	fang	Paymentsto Acquire Oiland Gas Property Related Party PaymentstoAcquireOilandGasPropertyRelatedParty	18550000	USD
CY2011	fang	Paymentsto Exploreand Develop Oiland Gas Properties Related Party PaymentstoExploreandDevelopOilandGasPropertiesRelatedParty	22014000	USD
CY2013	fang	Paymentsto Exploreand Develop Oiland Gas Properties Related Party PaymentstoExploreandDevelopOilandGasPropertiesRelatedParty	13777000	USD
CY2012	fang	Paymentsto Exploreand Develop Oiland Gas Properties Related Party PaymentstoExploreandDevelopOilandGasPropertiesRelatedParty	9675000	USD
CY2012Q4	fang	Pipelineand Gas Gathering Assets PipelineandGasGatheringAssets	0	USD
CY2013Q4	fang	Pipelineand Gas Gathering Assets PipelineandGasGatheringAssets	6142000	USD
CY2013Q4	fang	Prepaid Drilling Liability Current PrepaidDrillingLiabilityCurrent	16491000	USD
CY2012Q4	fang	Prepaid Drilling Liability Current PrepaidDrillingLiabilityCurrent	4540000	USD
CY2011	fang	Production Tax Expense Excluding Related Party ProductionTaxExpenseExcludingRelatedParty	1240000	USD
CY2012	fang	Production Tax Expense Excluding Related Party ProductionTaxExpenseExcludingRelatedParty	4950000	USD
CY2013	fang	Production Tax Expense Excluding Related Party ProductionTaxExpenseExcludingRelatedParty	12399000	USD
CY2011	fang	Production Tax Expense Related Party ProductionTaxExpenseRelatedParty	1792000	USD
CY2012	fang	Production Tax Expense Related Party ProductionTaxExpenseRelatedParty	287000	USD
CY2013	fang	Production Tax Expense Related Party ProductionTaxExpenseRelatedParty	500000	USD
CY2012	fang	Resultsof Operations Incomebefore Income Taxes Pro Forma ResultsofOperationsIncomebeforeIncomeTaxesProForma	28184000	USD
CY2013	fang	Proved Undeveloped Reserves Numberof Wells Downgraded ProvedUndevelopedReservesNumberofWellsDowngraded	92	well
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	18101000	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
CY2013	fang	Revenue From Related Parties Liquid Natural Gas Sales Revenue RevenueFromRelatedPartiesLiquidNaturalGasSalesRevenue	4696000	USD
CY2011	fang	Revenue From Related Parties Natural Gas Sales RevenueFromRelatedPartiesNaturalGasSales	586000	USD
CY2013	fang	Revenue From Related Parties Natural Gas Sales RevenueFromRelatedPartiesNaturalGasSales	2534000	USD
CY2012	fang	Revenue From Related Parties Natural Gas Sales RevenueFromRelatedPartiesNaturalGasSales	1010000	USD
CY2011	fang	Revenue From Related Parties Oil And Gas Services Revenue RevenueFromRelatedPartiesOilAndGasServicesRevenue	1491000	USD
CY2013	fang	Revenue From Related Parties Oil And Gas Services Revenue RevenueFromRelatedPartiesOilAndGasServicesRevenue	0	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
CY2013	fang	Revenue From Related Parties Oil Sales Revenue RevenueFromRelatedPartiesOilSalesRevenue	0	USD
CY2011	fang	Revenue From Related Parties Oil Sales Revenue RevenueFromRelatedPartiesOilSalesRevenue	38873000	USD
CY2012Q4	fang	Stock Issued During Period Shares Price Per Share StockIssuedDuringPeriodSharesPricePerShare	17.50
CY2013	fang	Stock Issued During Period Value Stock Options Exercisedand Restricted Stock Vested StockIssuedDuringPeriodValueStockOptionsExercisedandRestrictedStockVested	3501000	USD
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0001539838
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	47106216	shares
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q2	dei	Entity Public Float EntityPublicFloat	800108000	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	Diamondback Energy, Inc.
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes

Files In Submission

Name	View Source	Status
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$FANG
Diamondback Energy, Inc. Stock $fang

2013 Q4 Form 10-K Financial Statement

#000153983814000007 Filed on February 19, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

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$FANG Diamondback Energy, Inc. Stock $fang

2013 Q4 Form 10-K Financial Statement

#000153983814000007 Filed on February 19, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FANG
Diamondback Energy, Inc. Stock $fang