$UNTC
UNIT CORP Stock $untc

$untc Overview Financials Valuation SEC Filings Company Website

2013 Q4 Form 10-K Financial Statement

#000079894914000007 Filed on February 25, 2014

Income Statement

Concept	2013 Q4	2012 Q4	2012 Q3
Revenue	$359.1M	$331.6M	$321.8M
YoY Change	8.31%	-4.54%	-0.14%
Cost Of Revenue	$266.4M	$245.7M	$225.9M
YoY Change	8.42%	-2.15%	-0.88%
Gross Profit	$92.69M	-$81.83M	$95.92M
YoY Change	-213.27%	-185.07%	1.71%
Gross Profit Margin	25.81%	-24.68%	29.81%
Selling, General & Admin	$10.00M	$9.300M	$8.400M
YoY Change	7.53%	17.72%	7.69%
% of Gross Profit	10.79%		8.76%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$91.30M	$84.60M	$71.30M
YoY Change	7.92%	7.63%	-1.52%
% of Gross Profit	98.5%		74.33%
Operating Expenses	$10.00M	$9.200M	$8.400M
YoY Change	8.7%	16.46%	18.31%
Operating Profit	$82.69M	-$91.03M	$95.92M
YoY Change	-190.84%	-203.1%	-0.68%
Interest Expense	-$8.300M	$700.0K	-$11.10M
YoY Change	-1285.71%	-120.0%
% of Operating Profit	-10.04%		-11.57%
Other Income/Expense, Net	$0.00	$0.00	-$11.16M
YoY Change		-100.0%	1573.31%
Pretax Income	$83.70M	-$91.40M	$76.37M
YoY Change	-191.58%	-208.17%	-11.98%
Income Tax	$32.40M	-$34.90M	$29.78M
% Of Pretax Income	38.71%		39.0%
Net Earnings	$51.30M	-$56.55M	$46.59M
YoY Change	-190.72%	-209.46%	-12.69%
Net Earnings / Revenue	14.29%	-17.05%	14.48%
Basic Earnings Per Share	$1.06	-$1.18	$0.97
Diluted Earnings Per Share	$1.05	-$1.18	$0.97
COMMON SHARES
Basic Shares Outstanding	49.11M shares	48.57M shares	47.94M shares
Diluted Shares Outstanding			48.20M shares

Balance Sheet

Concept	2013 Q4	2012 Q4	2012 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$18.60M	$1.000M	$1.000M
YoY Change	1760.0%	25.0%	-16.67%
Cash & Equivalents	$18.59M	$974.0K	$1.023M
Short-Term Investments
Other Short-Term Assets	$42.60M	$39.10M	$38.30M
YoY Change	8.95%	-27.86%	-37.21%
Inventory	$11.00M	$8.600M	$10.20M
Prepaid Expenses
Receivables	$139.8M	$146.0M	$160.7M
Other Receivables	$0.00	$900.0K	$0.00
Total Short-Term Assets	$212.0M	$195.6M	$210.1M
YoY Change	8.38%	-14.37%	-10.98%
LONG-TERM ASSETS
Property, Plant & Equipment	$3.723B	$3.477B	$3.519B
YoY Change	7.06%	18.18%	24.7%
Goodwill	$62.81M	$62.81M	$62.81M
YoY Change	0.0%	0.0%
Intangibles	$0.00	$680.0K	$934.0K
YoY Change	-100.0%	-63.34%
Long-Term Investments
YoY Change
Other Assets	$13.02M	$11.33M	$12.12M
YoY Change	14.84%	2.33%	-71.15%
Total Long-Term Assets	$3.810B	$3.565B	$3.611B
YoY Change	6.87%	17.74%	23.27%
TOTAL ASSETS
Total Short-Term Assets	$212.0M	$195.6M	$210.1M
Total Long-Term Assets	$3.810B	$3.565B	$3.611B
Total Assets	$4.022B	$3.761B	$3.821B
YoY Change	6.95%	15.49%	20.72%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$154.1M	$138.8M	$145.4M
YoY Change	10.99%	-3.14%	37.78%
Accrued Expenses	$64.36M	$54.10M	$82.71M
YoY Change	18.97%	4.57%	36.48%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$243.6M	$207.1M	$247.4M
YoY Change	17.59%	-2.64%	38.94%
LONG-TERM LIABILITIES
Long-Term Debt	$645.7M	$716.4M	$645.2M
YoY Change	-9.86%	138.79%	111.25%
Other Long-Term Liabilities	$158.3M	$167.0M	$164.2M
YoY Change	-5.18%	46.7%	45.67%
Total Long-Term Liabilities	$804.0M	$883.3M	$809.3M
YoY Change	-8.98%	113.46%	93.57%
TOTAL LIABILITIES
Total Short-Term Liabilities	$243.6M	$207.1M	$247.4M
Total Long-Term Liabilities	$804.0M	$883.3M	$809.3M
Total Liabilities	$1.048B	$1.090B	$1.057B
YoY Change	-3.93%	74.04%	-15.78%
SHAREHOLDERS EQUITY
Retained Earnings	$1.718B	$1.534B	$1.590B
YoY Change	12.05%	1.53%
Common Stock	$9.659M	$9.594M	$9.591M
YoY Change	0.68%	0.56%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.173B	$1.974B	$2.029B
YoY Change
Total Liabilities & Shareholders Equity	$4.022B	$3.761B	$3.821B
YoY Change	6.95%	15.49%	20.72%

Cashflow Statement

Concept	2013 Q4	2012 Q4	2012 Q3
OPERATING ACTIVITIES
Net Income	$51.30M	-$56.55M	$46.59M
YoY Change	-190.72%	-209.46%	-12.69%
Depreciation, Depletion And Amortization	$91.30M	$84.60M	$71.30M
YoY Change	7.92%	7.63%	-1.52%
Cash From Operating Activities	$173.3M	$178.8M	$197.1M
YoY Change	-3.08%	-6.19%	24.43%
INVESTING ACTIVITIES
Capital Expenditures	$191.4M	$175.7M	$811.3M
YoY Change	8.94%	-6.04%	240.74%
Acquisitions
YoY Change
Other Investing Activities	$34.90M	-$14.80M	$290.3M
YoY Change	-335.81%	-692.0%	4582.26%
Cash From Investing Activities	-$156.5M	-$190.4M	-$521.0M
YoY Change	-17.8%	3.25%	124.67%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	0.000	11.70M	323.8M
YoY Change	-100.0%	-282.81%	341.14%
NET CHANGE
Cash From Operating Activities	173.3M	178.8M	197.1M
Cash From Investing Activities	-156.5M	-190.4M	-521.0M
Cash From Financing Activities	0.000	11.70M	323.8M
Net Change In Cash	16.80M	100.0K	-100.0K
YoY Change	16700.0%	-150.0%	0.0%
FREE CASH FLOW
Cash From Operating Activities	$173.3M	$178.8M	$197.1M
Capital Expenditures	$191.4M	$175.7M	$811.3M
Free Cash Flow	-$18.10M	$3.100M	-$614.2M
YoY Change	-683.87%	-13.89%	670.64%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	7587000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	0	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	19026000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	138811000	USD
CY2013Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	154062000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	146046000	USD
CY2013Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	139788000	USD
CY2013	us-gaap	Accretion Expense AccretionExpense	5450000	USD
CY2012	us-gaap	Accretion Expense AccretionExpense	4615000	USD
CY2011	us-gaap	Accretion Expense AccretionExpense	3838000	USD
CY2011	us-gaap	Accretion Of Discount AccretionOfDiscount	128492000	USD
CY2012	us-gaap	Accretion Of Discount AccretionOfDiscount	157842000	USD
CY2013	us-gaap	Accretion Of Discount AccretionOfDiscount	147579000	USD
CY2012Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	24632000	USD
CY2013Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	27633000	USD
CY2013Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	7474000	USD
CY2012Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	0	USD
CY2012Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	54098000	USD
CY2013Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	64363000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	2907660000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3212225000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-6851000	USD
CY2011	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1336227000	USD
CY2012	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	1.75
CY2013Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	2439458000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	423603000	USD
CY2013Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	445470000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10000000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11400000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	16100000	USD
CY2013Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	5342000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	5343000	USD
CY2013	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	700000	USD
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1200000	USD
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1200000	USD
CY2013Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	133657000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	146159000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	96446000	USD
CY2013	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	5450000	USD
CY2012	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	4615000	USD
CY2013Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	2954000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	2953000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	56650000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	4857000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	2788000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	4751000	USD
CY2013	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	15436000	USD
CY2012	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	7506000	USD
CY2013Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	130703000	USD
CY2012Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	143206000	USD
CY2012Q4	us-gaap	Assets Assets	3761120000	USD
CY2013Q4	us-gaap	Assets Assets	4022390000	USD
CY2011Q4	us-gaap	Assets Assets	3256720000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	195644000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	212031000	USD
CY2012Q4	us-gaap	Assets Held For Sale Current AssetsHeldForSaleCurrent	0	USD
CY2013Q4	us-gaap	Assets Held For Sale Current AssetsHeldForSaleCurrent	15621000	USD
CY2011	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	4.81
CY2012	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	1.74
CY2011	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	4.78
CY2013Q4	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	3900000	USD
CY2011	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	229272000	USD
CY2012	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	83940000	USD
CY2012	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1376393000	USD
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.2
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.2
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	175000000	shares
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	175000000	shares
CY2011Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	1724312000	USD
CY2012Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	2216787000	USD
CY2013Q4	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization Cumulative CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative	545588000	USD
CY2011Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	3487664000	USD
CY2013Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	4781300000	USD
CY2012Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	4344040000	USD
CY2012Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	2127253000	USD
CY2013Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	2341842000	USD
CY2011Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	1763352000	USD
CY2013Q4	us-gaap	Capitalized Costs Wells And Related Equipment And Facilities CapitalizedCostsWellsAndRelatedEquipmentAndFacilities	21500000	USD
CY2012Q4	us-gaap	Capitalized Costs Wells And Related Equipment And Facilities CapitalizedCostsWellsAndRelatedEquipmentAndFacilities	17600000	USD
CY2011Q4	us-gaap	Capitalized Costs Wells And Related Equipment And Facilities CapitalizedCostsWellsAndRelatedEquipmentAndFacilities	15600000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	18593000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	974000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	835000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1359000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-524000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	139000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	17619000	USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	USD
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	49107004	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	48581948	shares
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	9594000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	9659000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	221744000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	11737000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	177159000	USD
CY2013	us-gaap	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	-43435000	USD
CY2011	us-gaap	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	-29000	USD
CY2013Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	3589000	USD
CY2012Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	2779000	USD
CY2012Q4	us-gaap	Deferred Costs DeferredCosts	13432000	USD
CY2013Q4	us-gaap	Deferred Costs DeferredCosts	11844000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	87839000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-2416000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	696000	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	15991000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	146000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-1388000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	743000	USD
CY2012	us-gaap	Costs And Expenses CostsAndExpenses	1260209000	USD
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	885797000	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	1026817000	USD
CY2011	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	50013000	USD
CY2012	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	225669000	USD
CY2013	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	0	USD
CY2012	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	420467000	USD
CY2013	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	76304000	USD
CY2011	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	70999000	USD
CY2012	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	390649000	USD
CY2013	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	424314000	USD
CY2011	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	391862000	USD
CY2011	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	43836000	USD
CY2013	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	33373000	USD
CY2012	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	46467000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2084000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15845000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-3159000	USD
CY2011Q2	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	250000000	USD
CY2012Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	650000000	USD
CY2012Q4	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.06625
CY2011Q2	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.06625
CY2013Q4	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.06625
CY2013	us-gaap	Debt Instrument Interest Rate Terms DebtInstrumentInterestRateTerms	LIBOR plus 1.00%
CY2012Q3	us-gaap	Debt Instrument Maturity Date DebtInstrumentMaturityDate	2021-05-15
CY2012Q2	us-gaap	Debt Instrument Maturity Date DebtInstrumentMaturityDate	2021-05-15
CY2013	us-gaap	Debt Instrument Maturity Date DebtInstrumentMaturityDate	2021-05-15
CY2013Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	4300000	USD
CY2012Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	4700000	USD
CY2012	us-gaap	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	-112359000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	13768000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	109363000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	100732000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	15530000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	125551000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	16188000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1762000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	12893000	USD
CY2013Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	5561000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	132882000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	155598000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	8765000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	13585000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	61055000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	56020000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	1972000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	17258000	USD
CY2012	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	121000	USD
CY2011	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	1174000	USD
CY2013	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	8000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	787813000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	687011000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	695776000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	801398000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	319021000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	333907000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	280451000	USD
CY2012Q4	us-gaap	Derivative Assets DerivativeAssets	16552000	USD
CY2013Q4	us-gaap	Derivative Assets DerivativeAssets	515000	USD
CY2012Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	16552000	USD
CY2013Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	515000	USD
CY2013Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	-5000000	USD
CY2011	us-gaap	Derivative Cash Received On Hedge DerivativeCashReceivedOnHedge	2254000	USD
CY2012	us-gaap	Derivative Cash Received On Hedge DerivativeCashReceivedOnHedge	51853000	USD
CY2013	us-gaap	Derivative Cash Received On Hedge DerivativeCashReceivedOnHedge	-1161000	USD
CY2013	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-190000	USD
CY2012	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-2616000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	51853000	USD
CY2013	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	603000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	2965000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	7587000	USD
CY2013	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	0	USD
CY2012	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-1243000	USD
CY2011	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	1702000	USD
CY2013	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-8374000	USD
CY2013	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Loss DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLoss	8184000	USD
CY2012	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Loss DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLoss	-1373000	USD
CY2012Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	2510000	USD
CY2013Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	5561000	USD
CY2012Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	1948000	USD
CY2012Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	562000	USD
CY2013Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	0	USD
CY2013Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	14200000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P0Y9M18D
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.05
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.70
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.97
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.40
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.83
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.18
CY2013	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	426377000	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	-924136000	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	-842430000	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	-996380000	USD
CY2013	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	-1225976000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	-1079956000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	-1087909000	USD
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.11
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.83
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.10
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.06
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.84
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.71
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.18
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.97
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.40
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.22
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.80
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.08
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.09
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.22
CY2011	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	2500000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	3500000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	2700000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3900000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4500000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6200000	USD
CY2012	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	432058000	USD
CY2011	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	401134000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	62808000	USD
CY2013	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2011	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2012	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2012Q4	us-gaap	Fair Value Concentration Of Risk Cash And Cash Equivalents FairValueConcentrationOfRiskCashAndCashEquivalents	40400000	USD
CY2013Q4	us-gaap	Fair Value Concentration Of Risk Cash And Cash Equivalents FairValueConcentrationOfRiskCashAndCashEquivalents	52100000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	17300000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	18000000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	0	USD
CY2012	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	1608000	USD
CY2011	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	-1688000	USD
CY2013	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	116000	USD
CY2012	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	253000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	17076000	USD
CY2011	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-595000	USD
CY2011	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-595000	USD
CY2012	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	253000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	17076000	USD
CY2013	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	16500000	USD
CY2013	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	17076000	USD
CY2011	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-595000	USD
CY2012	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	253000	USD
CY2012	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	187292000	USD
CY2013	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	243406000	USD
CY2011	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	174859000	USD
CY2012	us-gaap	Gas Gathering Transportation Marketing And Processing Revenue GasGatheringTransportationMarketingAndProcessingRevenue	217460000	USD
CY2011	us-gaap	Gas Gathering Transportation Marketing And Processing Revenue GasGatheringTransportationMarketingAndProcessingRevenue	208238000	USD
CY2013	us-gaap	Gas Gathering Transportation Marketing And Processing Revenue GasGatheringTransportationMarketingAndProcessingRevenue	287354000	USD
CY2013	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	38323000	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	33086000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	30055000	USD
CY2013Q4	us-gaap	Goodwill Goodwill	62808000	USD
CY2012	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	1200000	USD
CY2011	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2013	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2012	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	283606000	USD
CY2013	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2012	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2011	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2013Q4	us-gaap	Gross Profit GrossProfit	92692000	USD
CY2013Q2	us-gaap	Gross Profit GrossProfit	90823000	USD
CY2012Q1	us-gaap	Gross Profit GrossProfit	95912000	USD
CY2012Q2	us-gaap	Gross Profit GrossProfit	-22253000	USD
CY2013Q1	us-gaap	Gross Profit GrossProfit	83683000	USD
CY2012Q3	us-gaap	Gross Profit GrossProfit	95921000	USD
CY2013Q3	us-gaap	Gross Profit GrossProfit	79082000	USD
CY2012Q4	us-gaap	Gross Profit GrossProfit	-81833000	USD
CY2013	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2012	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2011	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2012Q4	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	1200000	USD
CY2013	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2011	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2012Q2	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	115900000	USD
CY2012Q4	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	167700000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	39402000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	319002000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	301469000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	116723000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	123135000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16226000	USD
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1886000	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	2435000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	38731000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-2967000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-13994000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	361000	USD
CY2011	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-527000	USD
CY2013	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	17198000	USD
CY2011	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	9245000	USD
CY2012	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	6911000	USD
CY2011	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	37742000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	111651000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	105514000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	13791000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	1351000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	2543000	USD
CY2013	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	2919000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	8290000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	8941000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1084000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5116000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	9100000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	655000	USD
CY2013Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	0	USD
CY2012Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	901000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	15715000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	10187000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1064000	USD
CY2013	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	26629000	USD
CY2012	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	51587000	USD
CY2012	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	94678000	USD
CY2011	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-60675000	USD
CY2013	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-170091000	USD
CY2013	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	1137000	USD
CY2012	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-1119000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-1813000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	3466000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	674331000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-22672000	USD
CY2013	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	9000	USD
CY2011	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	58567000	USD
CY2012	us-gaap	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	283774000	USD
CY2013Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	0	USD
CY2012Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	680000	USD
CY2012	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-14137000	USD
CY2013	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-15015000	USD
CY2011	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-4167000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	14880000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	12485000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	3470000	USD
CY2013Q4	us-gaap	Interest Payable Current InterestPayableCurrent	6504000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	6568000	USD
CY2012Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	8563000	USD
CY2013Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	10998000	USD
CY2013	us-gaap	Lease Expiration Date1 LeaseExpirationDate1	2017-09-01
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4022390000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3761120000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	207139000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	243573000	USD
CY2012Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.029
CY2013Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.000
CY2013Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	900000000	USD
CY2013Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	688200000	USD
CY2012Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	687700000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	716359000	USD
CY2013Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	645696000	USD
CY2012Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	37728000	USD
CY2013Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	39666000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	388270000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	159257000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-77532000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-768236000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-579180000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1079042000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	690911000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	608455000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	23176000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	184746000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	195867000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	40206000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	59007000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	-19302000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	34232000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	-56547000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	46586000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	51301000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	52439000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	184746000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	23176000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	195867000	USD
CY2012	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	-321099000	USD
CY2013	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	188826000	USD
CY2011	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	115852000	USD
CY2012	us-gaap	Oil And Gas Production Expense OilAndGasProductionExpense	150212000	USD
CY2013	us-gaap	Oil And Gas Production Expense OilAndGasProductionExpense	184001000	USD
CY2011	us-gaap	Oil And Gas Production Expense OilAndGasProductionExpense	131271000	USD
CY2013	us-gaap	Oil And Gas Revenue OilAndGasRevenue	649718000	USD
CY2011	us-gaap	Oil And Gas Revenue OilAndGasRevenue	514614000	USD
CY2012	us-gaap	Oil And Gas Revenue OilAndGasRevenue	567944000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	352356000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	346280000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	87747000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	8400000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	100000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	600000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	3400000	USD
CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	14000000	USD
CY2011	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	8500000	USD
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	16900000	USD
CY2013Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	146500000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	166983000	USD
CY2013Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	12113000	USD
CY2013Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	158331000	USD
CY2013	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-2250000	USD
CY2012	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-781000	USD
CY2011	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-294000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2704000	USD
CY2013	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-23564000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-15512000	USD
CY2012Q3	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	8700000	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	50013000	USD
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	598485000	USD
CY2013	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	703984000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	4527000	USD
CY2013Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	7674000	USD
CY2013Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	13016000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	11334000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-11439000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	25877000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-7587000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	354000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	31682000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	1819000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	249000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	20171000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	1146000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	7069000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-16205000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	4892000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	29384000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-7349000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	18635000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	12094000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	18412000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-4717000	USD
CY2012	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	2279000	USD
CY2013	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	3024000	USD
CY2011	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	1333000	USD
CY2012	us-gaap	Other Income OtherIncome	-132000	USD
CY2011	us-gaap	Other Income OtherIncome	-239000	USD
CY2013	us-gaap	Other Income OtherIncome	-175000	USD
CY2013Q4	us-gaap	Other Liabilities OtherLiabilities	170444000	USD
CY2012Q4	us-gaap	Other Liabilities OtherLiabilities	179265000	USD
CY2012Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	12282000	USD
CY2012Q2	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	6000000	USD
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-3894000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2012Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	62840000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	728551000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	762381000	USD
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1
CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2013Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	13843000	USD
CY2013Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	12931000	USD
CY2013	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	96457000	USD
CY2011	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	45327000	USD
CY2012	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	104377000	USD
CY2013	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	21700000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	243950000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	386274000	USD
CY2013	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	222500000	USD
CY2012	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	735300000	USD
CY2011	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	441500000	USD
CY2012Q2	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	244000000	USD
CY2012	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	-19440000	USD
CY2013	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	-7014000	USD
CY2011	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	26454000	USD
CY2013	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	120910000	USD
CY2012	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	281824000	USD
CY2011	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	10328000	USD
CY2011	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	679000	USD
CY2012	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	215000	USD
CY2013	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	574000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	6934916000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	6384882000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3477222000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3722691000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	87435000	USD
CY2011	us-gaap	Provision For Other Losses ProvisionForOtherLosses	260000	USD
CY2012	us-gaap	Provision For Other Losses ProvisionForOtherLosses	90000	USD
CY2013	us-gaap	Provision For Other Losses ProvisionForOtherLosses	0	USD
CY2013	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	293600000	USD
CY2012	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	714200000	USD
CY2011	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	554500000	USD
CY2012Q2	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	220300000	USD
CY2012	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	492475000	USD
CY2011	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	181960000	USD
CY2013	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	222672000	USD
CY2012	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	-39328000	USD
CY2013	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	152207000	USD
CY2011	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	127767000	USD
CY2011	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	115400000	USD
CY2013	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	162822000	USD
CY2012	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	131389000	USD
CY2012	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	557003000	USD
CY2011	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	505450000	USD
CY2013	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	633792000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1718263000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1533517000	USD
CY2012	us-gaap	Revenue Oil And Gas Services RevenueOilAndGasServices	529719000	USD
CY2013	us-gaap	Revenue Oil And Gas Services RevenueOilAndGasServices	414778000	USD
CY2011	us-gaap	Revenue Oil And Gas Services RevenueOilAndGasServices	484651000	USD
CY2011	us-gaap	Revenues Revenues	1207503000	USD
CY2013	us-gaap	Revenues Revenues	1351850000	USD
CY2012	us-gaap	Revenues Revenues	1315123000	USD
CY2012Q1	us-gaap	Revenues Revenues	333966000	USD
CY2012Q2	us-gaap	Revenues Revenues	327785000	USD
CY2012Q4	us-gaap	Revenues Revenues	331582000	USD
CY2013Q3	us-gaap	Revenues Revenues	333776000	USD
CY2013Q1	us-gaap	Revenues Revenues	318532000	USD
CY2013Q4	us-gaap	Revenues Revenues	359121000	USD
CY2012Q3	us-gaap	Revenues Revenues	321790000	USD
CY2013Q2	us-gaap	Revenues Revenues	340421000	USD
CY2012	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-148648000	USD
CY2013	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-10650000	USD
CY2011	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-38336000	USD
CY2013	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	-470970000	USD
CY2011	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	-389339000	USD
CY2012	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	-425626000	USD
CY2013Q4	us-gaap	Senior Notes SeniorNotes	645696000	USD
CY2012Q4	us-gaap	Senior Notes SeniorNotes	645259000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	16956000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	21317000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	14303000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	3300000	shares
CY2011	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-65912000	USD
CY2012	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-124537000	USD
CY2013	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-44711000	USD
CY2011	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Period Increase Decrease StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease	232823000	USD
CY2012	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Period Increase Decrease StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease	-7953000	USD
CY2013	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Period Increase Decrease StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease	146020000	USD
CY2010Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	855086000	USD
CY2013Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	1225976000	USD
CY2012Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	1079956000	USD
CY2011Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	1087909000	USD
CY2012	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	15547000	USD
CY2013	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	21932000	USD
CY2011	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	14656000	USD
CY2012	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	430506000	shares
CY2011	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	241011000	shares
CY2013	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	525056000	shares
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	1974301000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	2173392000	USD
CY2011Q1	us-gaap	Stockholders Equity StockholdersEquity	1710617000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	1947017000	USD
CY2012Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	7308000	USD
CY2013Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	2313000	USD
CY2013Q4	us-gaap	Temporary Equity Redemption Price Per Share TemporaryEquityRedemptionPricePerShare	0.01
CY2012	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-53096000	USD
CY2013	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-5449000	USD
CY2011	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	159000	USD
CY2013	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</font></div></div>
CY2011Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	5343000	USD
CY2010Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	5083000	USD
CY2012Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	5343000	USD
CY2013Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	5342000	USD
CY2011	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	260000	USD
CY2012	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	90000	USD
CY2013	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	0	USD
CY2011	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	0	USD
CY2013	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	1000	USD
CY2012	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	90000	USD
CY2012	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	245000	shares
CY2013	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	354000	shares
CY2011	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	293000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48154000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47951000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48572000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47658000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47909000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48218000	shares
CY2012Q4	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	18517000	USD
CY2013Q4	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	20041000	USD
CY2013Q4	unt	Accrued Hedge Settlements AccruedHedgeSettlements	416000	USD
CY2012Q4	unt	Accrued Hedge Settlements AccruedHedgeSettlements	160000	USD
CY2012Q4	unt	Accrued Oil And Gas Production Expense Current AccruedOilAndGasProductionExpenseCurrent	10903000	USD
CY2013Q4	unt	Accrued Oil And Gas Production Expense Current AccruedOilAndGasProductionExpenseCurrent	16073000	USD
CY2012Q4	unt	Accumulated Other Comprehensive Income Tax AccumulatedOtherComprehensiveIncomeTax	4892000	USD
CY2013Q4	unt	Accumulated Other Comprehensive Income Tax AccumulatedOtherComprehensiveIncomeTax	0	USD
CY2011	unt	Amounts Reclassified From Accumulated Other Comprehensive Income AmountsReclassifiedFromAccumulatedOtherComprehensiveIncome	-3507000	USD
CY2012	unt	Amounts Reclassified From Accumulated Other Comprehensive Income AmountsReclassifiedFromAccumulatedOtherComprehensiveIncome	-30074000	USD
CY2013	unt	Amounts Reclassified From Accumulated Other Comprehensive Income AmountsReclassifiedFromAccumulatedOtherComprehensiveIncome	-238000	USD
CY2012	unt	Asset Retirement Obligation Liabilities Sold AssetRetirementObligationLiabilitiesSold	1258000	USD
CY2013	unt	Asset Retirement Obligation Liabilities Sold AssetRetirementObligationLiabilitiesSold	2622000	USD
CY2012Q4	unt	Book Overdrafts BookOverdrafts	7000000	USD
CY2013Q4	unt	Book Overdrafts BookOverdrafts	0	USD
CY2013	unt	Capital Expenditure Contract Drilling CapitalExpenditureContractDrilling	64325000	USD
CY2011	unt	Capital Expenditure Contract Drilling CapitalExpenditureContractDrilling	162208000	USD
CY2012	unt	Capital Expenditure Contract Drilling CapitalExpenditureContractDrilling	77520000	USD
CY2013	unt	Capital Expenditure Gas Gathering And Processing CapitalExpenditureGasGatheringAndProcessing	96085000	USD
CY2011	unt	Capital Expenditure Gas Gathering And Processing CapitalExpenditureGasGatheringAndProcessing	79355000	USD
CY2012	unt	Capital Expenditure Gas Gathering And Processing CapitalExpenditureGasGatheringAndProcessing	183162000	USD
CY2013Q4	unt	Contract Drilling Identifiable Assets ContractDrillingIdentifiableAssets	1042661000	USD
CY2012Q4	unt	Corporate Assets CorporateAssets	53647000	USD
CY2013Q4	unt	Corporate Assets CorporateAssets	64220000	USD
CY2013	unt	Contract Drilling Operating Income Loss ContractDrillingOperatingIncomeLoss	96304000	USD
CY2012	unt	Capital Expenditure Oil And Natural Gas CapitalExpenditureOilAndNaturalGas	1128349000	USD
CY2011	unt	Capital Expenditure Oil And Natural Gas CapitalExpenditureOilAndNaturalGas	580055000	USD
CY2013	unt	Capital Expenditure Oil And Natural Gas CapitalExpenditureOilAndNaturalGas	516040000	USD
CY2011	unt	Capital Expenditure Oil And Natural Gas Including Salt Water Disposal CapitalExpenditureOilAndNaturalGasIncludingSaltWaterDisposal	588158000	USD
CY2013	unt	Capital Expenditure Oil And Natural Gas Including Salt Water Disposal CapitalExpenditureOilAndNaturalGasIncludingSaltWaterDisposal	531233000	USD
CY2012	unt	Capital Expenditure Oil And Natural Gas Including Salt Water Disposal CapitalExpenditureOilAndNaturalGasIncludingSaltWaterDisposal	1145337000	USD
CY2012	unt	Capital Expenditures Reclassified CapitalExpendituresReclassified	16988000	USD
CY2011	unt	Capital Expenditures Reclassified CapitalExpendituresReclassified	8103000	USD
CY2011	unt	Change In Net Income Dilutive ChangeInNetIncomeDilutive	0	USD
CY2013	unt	Change In Net Income Dilutive ChangeInNetIncomeDilutive	0	USD
CY2012	unt	Change In Net Income Dilutive ChangeInNetIncomeDilutive	0	USD
CY2013	unt	Commitment Fee Under Credit Facility Standard CommitmentFeeUnderCreditFacilityStandard	0.01
CY2013	unt	Contract Drilling Depreciation ContractDrillingDepreciation	71194000	USD
CY2012	unt	Contract Drilling Depreciation ContractDrillingDepreciation	81007000	USD
CY2011	unt	Contract Drilling Depreciation ContractDrillingDepreciation	79667000	USD
CY2012	unt	Contract Drilling Expenses ContractDrillingExpenses	289524000	USD
CY2011	unt	Contract Drilling Expenses ContractDrillingExpenses	269899000	USD
CY2013	unt	Contract Drilling Expenses ContractDrillingExpenses	247280000	USD
CY2012	unt	Contract Drilling Fees ContractDrillingFees	246000	USD
CY2011	unt	Contract Drilling Fees ContractDrillingFees	352000	USD
CY2013	unt	Contract Drilling Fees ContractDrillingFees	16000	USD
CY2011Q4	unt	Contract Drilling Identifiable Assets ContractDrillingIdentifiableAssets	1118666000	USD
CY2012Q4	unt	Contract Drilling Identifiable Assets ContractDrillingIdentifiableAssets	1079736000	USD
CY2011	unt	Contract Drilling Operating Income Loss ContractDrillingOperatingIncomeLoss	135085000	USD
CY2012	unt	Contract Drilling Operating Income Loss ContractDrillingOperatingIncomeLoss	159188000	USD
CY2013	unt	Contract Drilling Revenues ContractDrillingRevenues	414778000	USD
CY2011	unt	Contract Drilling Revenues ContractDrillingRevenues	484651000	USD
CY2012	unt	Contract Drilling Revenues ContractDrillingRevenues	529719000	USD
CY2013	unt	Contract Drilling Revenues Gross ContractDrillingRevenuesGross	479091000	USD
CY2011	unt	Contract Drilling Revenues Gross ContractDrillingRevenuesGross	536872000	USD
CY2012	unt	Contract Drilling Revenues Gross ContractDrillingRevenuesGross	579368000	USD
CY2011Q4	unt	Corporate Assets CorporateAssets	69799000	USD
CY2013	unt	Costs Incurred In Asset Retirement Obligation CostsIncurredInAssetRetirementObligation	-17951000	USD
CY2013Q4	unt	Estimated Annual Payments Long Term Debt And Other Liabilities Due In Year Three EstimatedAnnualPaymentsLongTermDebtAndOtherLiabilitiesDueInYearThree	40400000	USD
CY2013Q4	unt	Estimated Annual Payments Long Term Debt And Other Liabilities Due In Year Two EstimatedAnnualPaymentsLongTermDebtAndOtherLiabilitiesDueInYearTwo	2800000	USD
CY2011	unt	Costs Incurred In Asset Retirement Obligation CostsIncurredInAssetRetirementObligation	23345000	USD
CY2011	unt	Elimination Of Inter Segment Revenue Of Contract Drilling EliminationOfInterSegmentRevenueOfContractDrilling	52221000	USD
CY2013	unt	Elimination Of Inter Segment Revenue Of Contract Drilling EliminationOfInterSegmentRevenueOfContractDrilling	64313000	USD
CY2012	unt	Elimination Of Inter Segment Revenue Of Gas Gathering And Processing EliminationOfInterSegmentRevenueOfGasGatheringAndProcessing	73313000	USD
CY2012	unt	Costs Incurred In Asset Retirement Obligation CostsIncurredInAssetRetirementObligation	45097000	USD
CY2013	unt	Current Ratio Of Credit Facility CurrentRatioOfCreditFacility	1 to 1
CY2012Q3	unt	Debt Instrument Issued At Discount Percent Of Par DebtInstrumentIssuedAtDiscountPercentOfPar	0.9875
CY2013	unt	Debt Instrument Variable Interest Rate Payable Assessment Period DebtInstrumentVariableInterestRatePayableAssessmentPeriod	P90D
CY2012Q4	unt	Deferred Tax Assets Tax Deferred Expense Allowance For Losses And Nondeductible Accruals DeferredTaxAssetsTaxDeferredExpenseAllowanceForLossesAndNondeductibleAccruals	74890000	USD
CY2013Q4	unt	Deferred Tax Assets Tax Deferred Expense Allowance For Losses And Nondeductible Accruals DeferredTaxAssetsTaxDeferredExpenseAllowanceForLossesAndNondeductibleAccruals	77285000	USD
CY2012Q4	unt	Deferred Tax Liability Depreciation Depletion Amortization And Impairment DeferredTaxLiabilityDepreciationDepletionAmortizationAndImpairment	819893000	USD
CY2013Q4	unt	Deferred Tax Liability Depreciation Depletion Amortization And Impairment DeferredTaxLiabilityDepreciationDepletionAmortizationAndImpairment	943411000	USD
CY2012Q4	unt	Depositsonassetsheldforsale Depositsonassetsheldforsale	0	USD
CY2013Q4	unt	Depositsonassetsheldforsale Depositsonassetsheldforsale	3750000	USD
CY2013	unt	Derivative Instruments Not Designatedas Hedges Loss Amount Settled During Period DerivativeInstrumentsNotDesignatedasHedgesLossAmountSettledDuringPeriod	-1764000	USD
CY2012	unt	Derivative Instruments Not Designatedas Hedges Loss Amount Settled During Period DerivativeInstrumentsNotDesignatedasHedgesLossAmountSettledDuringPeriod	0	USD
CY2012Q4	unt	Drilling Equipment DrillingEquipment	1478645000	USD
CY2013Q4	unt	Drilling Equipment DrillingEquipment	1477093000	USD
CY2012Q4	unt	Effects Of Cash Flow Hedges Used In Calculating Ceiling Limitation Amount EffectsOfCashFlowHedgesUsedInCalculatingCeilingLimitationAmount	29800000	USD
CY2012Q2	unt	Effects Of Cash Flow Hedges Used In Calculating Ceiling Limitation Amount EffectsOfCashFlowHedgesUsedInCalculatingCeilingLimitationAmount	32500000	USD
CY2013	unt	Eliminated Associated Operating Expense EliminatedAssociatedOperatingExpense	46900000	USD
CY2011	unt	Eliminated Associated Operating Expense EliminatedAssociatedOperatingExpense	32600000	USD
CY2012	unt	Eliminated Associated Operating Expense EliminatedAssociatedOperatingExpense	34100000	USD
CY2011	unt	Eliminated Yielding EliminatedYielding	19600000	USD
CY2013	unt	Eliminated Yielding EliminatedYielding	17400000	USD
CY2012	unt	Eliminated Yielding EliminatedYielding	15500000	USD
CY2012	unt	Elimination Of Inter Segment Revenue Of Contract Drilling EliminationOfInterSegmentRevenueOfContractDrilling	49649000	USD
CY2011	unt	Elimination Of Inter Segment Revenue Of Gas Gathering And Processing EliminationOfInterSegmentRevenueOfGasGatheringAndProcessing	76010000	USD
CY2013	unt	Elimination Of Inter Segment Revenue Of Gas Gathering And Processing EliminationOfInterSegmentRevenueOfGasGatheringAndProcessing	91043000	USD
CY2013Q4	unt	Employee Service Share Based Compensation Allocation Of Unrecognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfUnrecognizedPeriodCostsCapitalizedAmount	2400000	USD
CY2013	unt	Employment Contract Period Extension Years EmploymentContractPeriodExtensionYears	1	Y
CY2013	unt	Equal Redemption Price Percentage Of Principal Amount Of Debt EqualRedemptionPricePercentageOfPrincipalAmountOfDebt	1.00
CY2013Q4	unt	Estimated Annual Payments Long Term Debt And Other Liabilities Due In Next Twelve Months EstimatedAnnualPaymentsLongTermDebtAndOtherLiabilitiesDueInNextTwelveMonths	12100000	USD
CY2013Q4	unt	Estimated Annual Payments Long Term Debt And Other Liabilities Due In Year Five EstimatedAnnualPaymentsLongTermDebtAndOtherLiabilitiesDueInYearFive	3500000	USD
CY2013Q4	unt	Estimated Annual Payments Long Term Debt And Other Liabilities Due In Year Four EstimatedAnnualPaymentsLongTermDebtAndOtherLiabilitiesDueInYearFour	4200000	USD
CY2013	unt	Estimated Gain Losson Dispositionof Assets EstimatedGainLossonDispositionofAssets	10400000	USD
CY2011	unt	Gas Gathering Transportation Marketing And Processing Depreciation GasGatheringTransportationMarketingAndProcessingDepreciation	16101000	USD
CY2013	unt	Gas Gathering Transportation Marketing And Processing Depreciation Amortization And Impairment GasGatheringTransportationMarketingAndProcessingDepreciationAmortizationAndImpairment	33191000	USD
CY2011	unt	Impairmentof Oiland Natural Gas Properties ImpairmentofOilandNaturalGasProperties	0	USD
CY2013	unt	Income From Operations IncomeFromOperations	325033000	USD
CY2012	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	4522351000	USD
CY2011	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	4583629000	USD
CY2013	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	5573119000	USD
CY2011	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts	340992000	USD
CY2013	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts	571170000	USD
CY2012	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts	431673000	USD
CY2012	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	762519000	USD
CY2013	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	1044608000	USD
CY2011	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	952736000	USD
CY2013	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	2222356000	USD
CY2012	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	1922386000	USD
CY2011	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	2012045000	USD
CY2011	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts	1277856000	USD
CY2013	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts	1734985000	USD
CY2012	unt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts	1405773000	USD
CY2012Q4	unt	Gas Balancing Liability GasBalancingLiability	3838000	USD
CY2013Q4	unt	Gas Balancing Liability GasBalancingLiability	3775000	USD
CY2013Q4	unt	Gas Gathering And Processing Identifiable Assets GasGatheringAndProcessingIdentifiableAssets	473717000	USD
CY2011Q4	unt	Gas Gathering And Processing Identifiable Assets GasGatheringAndProcessingIdentifiableAssets	247763000	USD
CY2012Q4	unt	Gas Gathering And Processing Identifiable Assets GasGatheringAndProcessingIdentifiableAssets	413708000	USD
CY2012	unt	Gas Gathering And Processing Operating Income Loss GasGatheringAndProcessingOperatingIncomeLoss	5780000	USD
CY2013	unt	Gas Gathering And Processing Operating Income Loss GasGatheringAndProcessingOperatingIncomeLoss	10757000	USD
CY2011	unt	Gas Gathering And Processing Operating Income Loss GasGatheringAndProcessingOperatingIncomeLoss	17278000	USD
CY2013	unt	Gas Gathering And Processing Revenue Gross GasGatheringAndProcessingRevenueGross	378397000	USD
CY2011	unt	Gas Gathering And Processing Revenue Gross GasGatheringAndProcessingRevenueGross	284248000	USD
CY2012	unt	Gas Gathering And Processing Revenue Gross GasGatheringAndProcessingRevenueGross	290773000	USD
CY2013	unt	Gas Gathering Transportation Marketing And Processing Depreciation GasGatheringTransportationMarketingAndProcessingDepreciation	33191000	USD
CY2012	unt	Gas Gathering Transportation Marketing And Processing Depreciation GasGatheringTransportationMarketingAndProcessingDepreciation	24388000	USD
CY2011	unt	Gas Gathering Transportation Marketing And Processing Depreciation Amortization And Impairment GasGatheringTransportationMarketingAndProcessingDepreciationAmortizationAndImpairment	16101000	USD
CY2012	unt	Gas Gathering Transportation Marketing And Processing Depreciation Amortization And Impairment GasGatheringTransportationMarketingAndProcessingDepreciationAmortizationAndImpairment	24388000	USD
CY2011	unt	General And Administrative Expense Reimbursement GeneralAndAdministrativeExpenseReimbursement	610000	USD
CY2012	unt	General And Administrative Expense Reimbursement GeneralAndAdministrativeExpenseReimbursement	39000	USD
CY2013	unt	General And Administrative Expense Reimbursement GeneralAndAdministrativeExpenseReimbursement	36000	USD
CY2013	unt	Grace Period Following First Anniversary GracePeriodFollowingFirstAnniversary	30	D
CY2012	unt	Impairmentof Oiland Natural Gas Properties ImpairmentofOilandNaturalGasProperties	283606000	USD
CY2013	unt	Impairmentof Oiland Natural Gas Properties ImpairmentofOilandNaturalGasProperties	0	USD
CY2012	unt	Income From Operations IncomeFromOperations	54914000	USD
CY2013	unt	Repurchase Of Limited Units Outstanding Amount RepurchaseOfLimitedUnitsOutstandingAmount	16000	USD
CY2012Q4	unt	Non Cash Ceiling Test Write Down Net Of Tax NonCashCeilingTestWriteDownNetOfTax	104400000	USD
CY2012Q2	unt	Non Cash Ceiling Test Write Down Net Of Tax NonCashCeilingTestWriteDownNetOfTax	72100000	USD
CY2011	unt	Income From Operations IncomeFromOperations	321706000	USD
CY2013	unt	Increase Decrease In Accounts Payable Related To Purchases Of Property Plant And Equipment IncreaseDecreaseInAccountsPayableRelatedToPurchasesOfPropertyPlantAndEquipment	-6550000	USD
CY2011	unt	Increase Decrease In Accounts Payable Related To Purchases Of Property Plant And Equipment IncreaseDecreaseInAccountsPayableRelatedToPurchasesOfPropertyPlantAndEquipment	-28036000	USD
CY2012	unt	Increase Decrease In Accounts Payable Related To Purchases Of Property Plant And Equipment IncreaseDecreaseInAccountsPayableRelatedToPurchasesOfPropertyPlantAndEquipment	-4753000	USD
CY2012	unt	Incremental Per Share Effect Of Dilutive Income Changes Over Dilutive Share Changes IncrementalPerShareEffectOfDilutiveIncomeChangesOverDilutiveShareChanges	0.00
CY2013	unt	Incremental Per Share Effect Of Dilutive Income Changes Over Dilutive Share Changes IncrementalPerShareEffectOfDilutiveIncomeChangesOverDilutiveShareChanges	-0.03
CY2011	unt	Incremental Per Share Effect Of Dilutive Income Changes Over Dilutive Share Changes IncrementalPerShareEffectOfDilutiveIncomeChangesOverDilutiveShareChanges	-0.03
CY2013	unt	Leverage Ratio Of Long Term Debt To Consolidated Ebitda LeverageRatioOfLongTermDebtToConsolidatedEbitda	4 to 1
CY2012Q3	unt	Loan Origination Fees LoanOriginationFees	1500000	USD
CY2013	unt	Minimum Depreciation Percentage For Drilling Rigs MinimumDepreciationPercentageForDrillingRigs	0.20
CY2013	unt	Minimum Percentage Of Common Stock That Should Be Acquired For Shareholder Rights Plan To Be Exercisable MinimumPercentageOfCommonStockThatShouldBeAcquiredForShareholderRightsPlanToBeExercisable	0.15
CY2013	unt	Minimum Redemption Percentage Of Debt Outstanding MinimumRedemptionPercentageOfDebtOutstanding	0.65
CY2011	unt	Minimum Salary For Employees To Participate In Oil And Gas Partnership MinimumSalaryForEmployeesToParticipateInOilAndGasPartnership	36000	USD
CY2012Q4	unt	Natural Gas Gathering Systems And Treating Plants NaturalGasGatheringSystemsAndTreatingPlants	461629000	USD
CY2013Q4	unt	Natural Gas Gathering Systems And Treating Plants NaturalGasGatheringSystemsAndTreatingPlants	549422000	USD
CY2012	unt	Non Cash Additions To Oil And Natural Gas Properties Related To Asset Retirement Obligations NonCashAdditionsToOilAndNaturalGasPropertiesRelatedToAssetRetirementObligations	45097000	USD
CY2011	unt	Non Cash Additions To Oil And Natural Gas Properties Related To Asset Retirement Obligations NonCashAdditionsToOilAndNaturalGasPropertiesRelatedToAssetRetirementObligations	23345000	USD
CY2013	unt	Non Cash Additions To Oil And Natural Gas Properties Related To Asset Retirement Obligations NonCashAdditionsToOilAndNaturalGasPropertiesRelatedToAssetRetirementObligations	-17952000	USD
CY2012Q2	unt	Non Cash Write Down Of Oil And Natural Gas Properties NonCashWriteDownOfOilAndNaturalGasProperties	115900000	USD
CY2012Q4	unt	Non Cash Write Down Of Oil And Natural Gas Properties NonCashWriteDownOfOilAndNaturalGasProperties	167700000	USD
CY2012Q4	unt	Non Cash Write Down Of Oil And Natural Gas Properties Net Of Tax NonCashWriteDownOfOilAndNaturalGasPropertiesNetOfTax	104400000	USD
CY2012Q2	unt	Non Cash Write Down Of Oil And Natural Gas Properties Net Of Tax NonCashWriteDownOfOilAndNaturalGasPropertiesNetOfTax	72100000	USD
CY2013Q4	unt	Oil And Natural Gas Properties Full Cost Method Subject To Amortization OilAndNaturalGasPropertiesFullCostMethodSubjectToAmortization	4235712000	USD
CY2011Q4	unt	Oil And Natural Gas Properties Full Cost Method Not Subject To Amortization OilAndNaturalGasPropertiesFullCostMethodNotSubjectToAmortization	185632000	USD
CY2011	unt	Percentage Of Annual Discount For Estimated Timing Of Cash Flows PercentageOfAnnualDiscountForEstimatedTimingOfCashFlows	0.10
CY2012	unt	Percentage Of Annual Discount For Estimated Timing Of Cash Flows PercentageOfAnnualDiscountForEstimatedTimingOfCashFlows	0.10
CY2013	unt	Percentage Of Maximum Aggregate Principal Equity Amount PercentageOfMaximumAggregatePrincipalEquityAmount	0.35
CY2013	unt	Percentage Of Repurchase Of Limited Units Outstanding PercentageOfRepurchaseOfLimitedUnitsOutstanding	0.20
CY2013	unt	Number Of Oil And Gas Limited Partnerships NumberOfOilAndGasLimitedPartnerships	16	Unit
CY2013	unt	Number Of Oil And Gas Limited Partnerships For Employee Investment NumberOfOilAndGasLimitedPartnershipsForEmployeeInvestment	13	Unit
CY2013	unt	Number Of Oil And Gas Limited Partnerships For Third Party Investment NumberOfOilAndGasLimitedPartnershipsForThirdPartyInvestment	3	Unit
CY2013Q4	unt	Number Of Partnerships NumberOfPartnerships	16	Unit
CY2013	unt	Numberof Contracts Daywork NumberofContractsDaywork	23	contract
CY2013	unt	Numberof Contracts Daywork Expiringin Next Fiscal Year NumberofContractsDayworkExpiringinNextFiscalYear	22	contract
CY2013	unt	Numberof Contracts Daywork Expiringin Two Years NumberofContractsDayworkExpiringinTwoYears	1	contract
CY2013	unt	Numberof Rigs Sold NumberofRigsSold	5	rig
CY2013Q4	unt	Numberofrigsheldforsale Numberofrigsheldforsale	4	rig
CY2012	unt	Oil And Gas Properties Average Depreciation Depletion And Amortization Rate OilAndGasPropertiesAverageDepreciationDepletionAndAmortizationRate	14.70	USD
CY2011	unt	Oil And Gas Properties Average Depreciation Depletion And Amortization Rate OilAndGasPropertiesAverageDepreciationDepletionAndAmortizationRate	15.06	USD
CY2013	unt	Oil And Gas Properties Average Depreciation Depletion And Amortization Rate OilAndGasPropertiesAverageDepreciationDepletionAndAmortizationRate	13.32	USD
CY2013	unt	Oil And Gas Property Full Cost Method Discount Percentage OilAndGasPropertyFullCostMethodDiscountPercentage	0.10
CY2011	unt	Oil And Natural Gas Depreciation Depletion And Amortization OilAndNaturalGasDepreciationDepletionAndAmortization	183350000	USD
CY2012	unt	Oil And Natural Gas Depreciation Depletion And Amortization OilAndNaturalGasDepreciationDepletionAndAmortization	211347000	USD
CY2013	unt	Oil And Natural Gas Depreciation Depletion And Amortization OilAndNaturalGasDepreciationDepletionAndAmortization	226498000	USD
CY2012Q4	unt	Oil And Natural Gas Identifiable Assets OilAndNaturalGasIdentifiableAssets	2214029000	USD
CY2011Q4	unt	Oil And Natural Gas Identifiable Assets OilAndNaturalGasIdentifiableAssets	1820492000	USD
CY2013Q4	unt	Oil And Natural Gas Identifiable Assets OilAndNaturalGasIdentifiableAssets	2441792000	USD
CY2011	unt	Oil And Natural Gas Operating Income Loss OilAndNaturalGasOperatingIncomeLoss	199993000	USD
CY2012	unt	Oil And Natural Gas Operating Income Loss OilAndNaturalGasOperatingIncomeLoss	-77221000	USD
CY2013	unt	Oil And Natural Gas Operating Income Loss OilAndNaturalGasOperatingIncomeLoss	239219000	USD
CY2013Q4	unt	Oil And Natural Gas Properties Full Cost Method Not Subject To Amortization OilAndNaturalGasPropertiesFullCostMethodNotSubjectToAmortization	545588000	USD
CY2012Q4	unt	Oil And Natural Gas Properties Full Cost Method Not Subject To Amortization OilAndNaturalGasPropertiesFullCostMethodNotSubjectToAmortization	521659000	USD
CY2012Q4	unt	Oil And Natural Gas Properties Full Cost Method Subject To Amortization OilAndNaturalGasPropertiesFullCostMethodSubjectToAmortization	3822381000	USD
CY2011Q4	unt	Oil And Natural Gas Properties Full Cost Method Subject To Amortization OilAndNaturalGasPropertiesFullCostMethodSubjectToAmortization	3302032000	USD
CY2012	unt	Other Capital Expenditure OtherCapitalExpenditure	11083000	USD
CY2013	unt	Other Capital Expenditure OtherCapitalExpenditure	4483000	USD
CY2011	unt	Other Capital Expenditure OtherCapitalExpenditure	2688000	USD
CY2012Q4	unt	Outstanding Borrowings Subject To Libor OutstandingBorrowingsSubjectToLibor	71100000	USD
CY2013Q4	unt	Outstanding Borrowings Subject To Libor OutstandingBorrowingsSubjectToLibor	0	USD
CY2013	unt	Percentage Of Annual Discount For Estimated Timing Of Cash Flows PercentageOfAnnualDiscountForEstimatedTimingOfCashFlows	0.10
CY2013	unt	Percentage Of Fair Value Of Common Stock That Can Be Acquired PercentageOfFairValueOfCommonStockThatCanBeAcquired	0.50
CY2012	unt	Repurchase Of Limited Units Outstanding Amount RepurchaseOfLimitedUnitsOutstandingAmount	56000	USD
CY2013Q1	unt	Performance Evaluation Period PerformanceEvaluationPeriod	P3Y
CY2013	unt	Proceed From Equity Offerings Redemption Price Percentage ProceedFromEquityOfferingsRedemptionPricePercentage	1.06625
CY2011	unt	Repurchase Of Limited Units Outstanding Amount RepurchaseOfLimitedUnitsOutstandingAmount	22000	USD
CY2011	unt	Results Of Operations Oil And Gas Income Before Income Taxes ResultsOfOperationsOilAndGasIncomeBeforeIncomeTaxes	208090000	USD
CY2012	unt	Results Of Operations Oil And Gas Income Before Income Taxes ResultsOfOperationsOilAndGasIncomeBeforeIncomeTaxes	-66861000	USD
CY2013	unt	Results Of Operations Oil And Gas Income Before Income Taxes ResultsOfOperationsOilAndGasIncomeBeforeIncomeTaxes	248298000	USD
CY2012	unt	Results Of Operations Oil And Gas Income Tax Expense ResultsOfOperationsOilAndGasIncomeTaxExpense	-27533000	USD
CY2013	unt	Results Of Operations Oil And Gas Income Tax Expense ResultsOfOperationsOilAndGasIncomeTaxExpense	96091000	USD
CY2011	unt	Results Of Operations Oil And Gas Income Tax Expense ResultsOfOperationsOilAndGasIncomeTaxExpense	80323000	USD
CY2013	unt	Revenuesfromtransactionswithoperatingsegmentsofsameentity Revenuesfromtransactionswithoperatingsegmentsofsameentity	64300000	USD
CY2012	unt	Revenuesfromtransactionswithoperatingsegmentsofsameentity Revenuesfromtransactionswithoperatingsegmentsofsameentity	49600000	USD
CY2011	unt	Revenuesfromtransactionswithoperatingsegmentsofsameentity Revenuesfromtransactionswithoperatingsegmentsofsameentity	52200000	USD
CY2013	unt	Right Of Common Stock RightOfCommonStock	one
CY2013	unt	Senior Notes Repurchase Price In Percentage SeniorNotesRepurchasePriceInPercentage	1.01
CY2012	unt	Separation Benefit Plans Expense SeparationBenefitPlansExpense	2200000	USD
CY2013	unt	Separation Benefit Plans Expense SeparationBenefitPlansExpense	2400000	USD
CY2011	unt	Separation Benefit Plans Expense SeparationBenefitPlansExpense	1900000	USD
CY2013Q4	unt	Separation Benefit Plans Liability SeparationBenefitPlansLiability	9382000	USD
CY2012Q4	unt	Separation Benefit Plans Liability SeparationBenefitPlansLiability	7972000	USD
CY2013	unt	Shareholder Rights Plan Expiration Date ShareholderRightsPlanExpirationDate	May 19, 2015
CY2013	unt	Tax On Gain Loss On Cash Flow Hedge Ineffectiveness TaxOnGainLossOnCashFlowHedgeIneffectiveness	74000	USD
CY2012	unt	Tax On Gain Loss On Cash Flow Hedge Ineffectiveness TaxOnGainLossOnCashFlowHedgeIneffectiveness	1008000	USD
CY2011	unt	Tax On Gain Loss On Cash Flow Hedge Ineffectiveness TaxOnGainLossOnCashFlowHedgeIneffectiveness	-1061000	USD
CY2012	unt	Total Capital Expenditures TotalCapitalExpenditures	1417102000	USD
CY2011	unt	Total Capital Expenditures TotalCapitalExpenditures	832409000	USD
CY2013	unt	Total Capital Expenditures TotalCapitalExpenditures	696126000	USD
CY2012	unt	Total Depreciation Depletion Amortization And Impairment TotalDepreciationDepletionAmortizationAndImpairment	602627000	USD
CY2013	unt	Total Depreciation Depletion Amortization And Impairment TotalDepreciationDepletionAmortizationAndImpairment	333907000	USD
CY2011	unt	Total Depreciation Depletion Amortization And Impairment TotalDepreciationDepletionAmortizationAndImpairment	280451000	USD
CY2012Q4	unt	Total Identifiable Assets TotalIdentifiableAssets	3707473000	USD
CY2013Q4	unt	Total Identifiable Assets TotalIdentifiableAssets	3958170000	USD
CY2011Q4	unt	Total Identifiable Assets TotalIdentifiableAssets	3186921000	USD
CY2012Q4	unt	Unproved Properties Acquiredand Wellsin Progress UnprovedPropertiesAcquiredandWellsinProgress	412623000	USD
CY2010Q4	unt	Unproved Properties Acquiredand Wellsin Progress UnprovedPropertiesAcquiredandWellsinProgress	7544000	USD
CY2013Q4	unt	Unproved Properties Acquiredand Wellsin Progress UnprovedPropertiesAcquiredandWellsinProgress	92929000	USD
CY2011Q4	unt	Unproved Properties Acquiredand Wellsin Progress UnprovedPropertiesAcquiredandWellsinProgress	32492000	USD
CY2013	unt	Vesting Period For Shareholder Rights Plan VestingPeriodForShareholderRightsPlan	10	D
CY2012	unt	Well Supervision And Other Fees WellSupervisionAndOtherFees	434000	USD
CY2013	unt	Well Supervision And Other Fees WellSupervisionAndOtherFees	470000	USD
CY2011	unt	Well Supervision And Other Fees WellSupervisionAndOtherFees	396000	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	0000798949
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	49232860	shares
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q2	dei	Entity Public Float EntityPublicFloat	1080689810	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	UNIT CORP
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2013	dei	Trading Symbol TradingSymbol	unt

Files In Submission

Name	View Source	Status
0000798949-14-000007-index-headers.html	Edgar Link	pending
0000798949-14-000007-index.html	Edgar Link	pending
0000798949-14-000007.txt	Edgar Link	pending
0000798949-14-000007-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
report.css	Edgar Link	pending
rs3.jpg	Edgar Link	pending
Show.js	Edgar Link	pending
unt-20131231.xml	Edgar Link	completed
unt-20131231.xsd	Edgar Link	pending
unt-20131231x10k.htm	Edgar Link	pending
unt-20131231x10kxexx21.htm	Edgar Link	pending
unt-20131231x10kxexx231.htm	Edgar Link	pending
unt-20131231x10kxexx232.htm	Edgar Link	pending
unt-20131231x10kxexx311.htm	Edgar Link	pending
unt-20131231x10kxexx312.htm	Edgar Link	pending
unt-20131231x10kxexx32.htm	Edgar Link	pending
unt-20131231_cal.xml	Edgar Link	unprocessable
unt-20131231_def.xml	Edgar Link	unprocessable
unt-20131231_lab.xml	Edgar Link	unprocessable
unt-20131231_pre.xml	Edgar Link	unprocessable
unt-2013123_chartx56258.jpg	Edgar Link	pending
unt-201312x31x10kxexx991.htm	Edgar Link	pending

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$UNTC
UNIT CORP Stock $untc

2013 Q4 Form 10-K Financial Statement

#000079894914000007 Filed on February 25, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UNTC UNIT CORP Stock $untc

2013 Q4 Form 10-K Financial Statement

#000079894914000007 Filed on February 25, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UNTC
UNIT CORP Stock $untc