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SUPPLEMENTAL FINANCIAL INFORMATION ON OIL AND NATURAL GAS EXPLORATION, DEVELOPMENT AND PRODUCTION ACTIVITIES (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Oil & Gas properties [Abstract] |  |  |  |  |
Proved oil and properties | $ 147,486 us-gaap_CapitalizedCostsProvedProperties | $ 136,521 us-gaap_CapitalizedCostsProvedProperties |  |  |
Unproved | 10,188 us-gaap_CapitalizedCostsUnprovedProperties | 7,478 us-gaap_CapitalizedCostsUnprovedProperties |  |  |
Exploratory wells in progress | 2,357 useg_WellsInProgress | 0 useg_WellsInProgress |  |  |
Total capitalized costs | 160,031 us-gaap_CapitalizedCostsOilAndGasProducingActivitiesGross | 143,999 us-gaap_CapitalizedCostsOilAndGasProducingActivitiesGross |  |  |
DD&A per equivalent BOE (in dollars per BOE) | 31.56 us-gaap_AmortizationExpensePerPhysicalUnitOfProduction | 32.06 us-gaap_AmortizationExpensePerPhysicalUnitOfProduction | 33.49 us-gaap_AmortizationExpensePerPhysicalUnitOfProduction |  |
Undeveloped properties [Abstract] |  |  |  |  |
Acquisitions | 3,732 us-gaap_AcquisitionCosts | 2,067 us-gaap_AcquisitionCosts | 271 us-gaap_AcquisitionCosts | 4,015 us-gaap_AcquisitionCosts | 103 us-gaap_AcquisitionCosts
Exploration | 0 us-gaap_ExplorationCosts | 0 us-gaap_ExplorationCosts | 0 us-gaap_ExplorationCosts | 0 us-gaap_ExplorationCosts | 0 us-gaap_ExplorationCosts
Development | 0 us-gaap_DevelopmentCosts | 0 us-gaap_DevelopmentCosts | 0 us-gaap_DevelopmentCosts | 0 us-gaap_DevelopmentCosts | 0 us-gaap_DevelopmentCosts
Undeveloped property costs | 3,732 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization | 2,067 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization | 271 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization | 4,015 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization | 103 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization
Total Acquisitions | 10,188 us-gaap_AcquisitionCostsCumulative |  |  |  |
Total Exploration | 0 us-gaap_ExplorationCostsCumulative |  |  |  |
Total Development | 0 us-gaap_DevelopmentCostsCumulative |  |  |  |
Total undeveloped property costs | 10,188 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative |  |  |  |
Property acquisition costs: |  |  |  |  |
Proved | 552 us-gaap_CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves | 445 us-gaap_CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves | 2,987 us-gaap_CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves |  |
Unproved | 4,167 us-gaap_CostsIncurredAcquisitionOfUnprovedOilAndGasProperties | 1,760 us-gaap_CostsIncurredAcquisitionOfUnprovedOilAndGasProperties | 1,416 us-gaap_CostsIncurredAcquisitionOfUnprovedOilAndGasProperties |  |
Exploration costs | 14,791 us-gaap_CostsIncurredExplorationCosts | 9,138 us-gaap_CostsIncurredExplorationCosts | 10,943 us-gaap_CostsIncurredExplorationCosts |  |
Development costs | 8,037 us-gaap_CostsIncurredDevelopmentCosts | 9,403 us-gaap_CostsIncurredDevelopmentCosts | 20,134 us-gaap_CostsIncurredDevelopmentCosts |  |
Total costs incurred | 27,547 useg_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTotal | 20,746 useg_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTotal | 35,480 useg_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTotal |  |
Results of operations from oil and natural gas producing activities [Abstract] |  |  |  |  |
Revenues | 32,379 us-gaap_OilAndGasSalesRevenue | 33,647 us-gaap_OilAndGasSalesRevenue | 32,534 us-gaap_OilAndGasSalesRevenue |  |
Operating expenses | 10,638 us-gaap_ResultsOfOperationsProductionOrLiftingCosts | 10,469 us-gaap_ResultsOfOperationsProductionOrLiftingCosts | 10,788 us-gaap_ResultsOfOperationsProductionOrLiftingCosts |  |
Depreciation, depletion and amortization | 14,685 us-gaap_ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions | 13,623 us-gaap_ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions | 14,893 us-gaap_ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions |  |
Impairment | 0 us-gaap_ResultsOfOperationsImpairmentOfOilAndGasProperties | 5,828 us-gaap_ResultsOfOperationsImpairmentOfOilAndGasProperties | 5,189 us-gaap_ResultsOfOperationsImpairmentOfOilAndGasProperties |  |
Total operating expenses | 25,323 us-gaap_ResultsOfOperationsExpenseFromOilAndGasProducingActivities | 29,920 us-gaap_ResultsOfOperationsExpenseFromOilAndGasProducingActivities | 30,870 us-gaap_ResultsOfOperationsExpenseFromOilAndGasProducingActivities |  |
Operating income | 7,056 us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes | 3,727 us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes | 1,664 us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes |  |
Standardized measure of discounted future net cash flows relating to USE's ownership interests in proved oil and natural gas reserves [Abstract] |  |  |  |  |
Future cash inflows | 381,156 us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows | 330,245 us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows | 237,148 us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows |  |
Future costs: |  |  |  |  |
Production | (149,450)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts | (129,392)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts | (96,616)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts |  |
Development | (70,770)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts | (37,739)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts | (21,461)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts |  |
Future income tax expense | (12,719)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense | (14,500)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense | (8,483)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense |  |
Future net cash flows | 148,217 us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows | 148,614 us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows | 110,588 us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows |  |
10% discount factor | (66,328)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows | (43,761)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows | (39,571)us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows |  |
Standardized measure of discounted future net cash flows | 81,889 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves | 104,853 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves | 71,017 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves | 62,191 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves |
Period for calculating unescalated average prices prior to the end of reporting period | 12 months |  |  |  |
Discount factor (in hundredths) | 10.00%us-gaap_FairValueInputsDiscountRate |  |  |  |
Changes in standardized measure of future net cash flows relating to proved oil and natural gas reserves [Roll Forward] |  |  |  |  |
Balance at beginning of period | 104,853 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves | 71,017 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves | 62,191 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves |  |
Sales of oil and gas, net of production costs | (21,741)us-gaap_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts | (23,179)us-gaap_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts | (21,747)us-gaap_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts |  |
Net change in prices and production costs | (17,376)us-gaap_NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts | 2,543 us-gaap_NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts | (4,548)us-gaap_NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts |  |
Changes in estimated future development costs | (1,869)us-gaap_IncreaseDecreaseInEstimatedFutureDevelopmentCosts | (6,414)us-gaap_IncreaseDecreaseInEstimatedFutureDevelopmentCosts | (9,706)us-gaap_IncreaseDecreaseInEstimatedFutureDevelopmentCosts |  |
Extensions and discoveries | 14,706 us-gaap_ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts | 54,360 us-gaap_ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts | 23,297 us-gaap_ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts |  |
Purchase of reserves in place | 0 us-gaap_IncreaseDueToPurchasesOfMineralsInPlace | 0 us-gaap_IncreaseDueToPurchasesOfMineralsInPlace | 2,573 us-gaap_IncreaseDueToPurchasesOfMineralsInPlace |  |
Sale of reserves in place | (13,339)us-gaap_DecreaseDueToSalesOfMineralsInPlace | 0 us-gaap_DecreaseDueToSalesOfMineralsInPlace | (13,573)us-gaap_DecreaseDueToSalesOfMineralsInPlace |  |
Revisions of previous quantity estimates | (4,815)us-gaap_RevisionsOfPreviousQuantityEstimates | (2,961)us-gaap_RevisionsOfPreviousQuantityEstimates | (5,927)us-gaap_RevisionsOfPreviousQuantityEstimates |  |
Previously estimated development costs incurred during the period | 7,175 us-gaap_PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod | 8,344 us-gaap_PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod | 22,808 us-gaap_PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod |  |
Net change in income taxes | 6,924 us-gaap_IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves | (4,245)us-gaap_IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves | 7,261 us-gaap_IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves |  |
Accretion of discount | 10,090 us-gaap_AccretionOfDiscount | 7,647 us-gaap_AccretionOfDiscount | 7,254 us-gaap_AccretionOfDiscount |  |
Changes in production rates, timing and other | (2,719)useg_ChangesInProductionRatesTimingAndOther | (2,259)useg_ChangesInProductionRatesTimingAndOther | 1,134 useg_ChangesInProductionRatesTimingAndOther |  |
Balance at end of period | $ 81,889 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves | $ 104,853 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves | $ 71,017 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves | $ 62,191 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves |
Oil (BBLS) [Member] |  |  |  |  |
Proved Developed and Undeveloped Reserves [Roll forward] |  |  |  |  |
Beginning of year | 3,459,713 us-gaap_ProvedDevelopedAndUndevelopedReservesNet / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember | 2,613,643 us-gaap_ProvedDevelopedAndUndevelopedReservesNet / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |  |
Revisions of previous quantity estimates | (262,570)us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember | (162,957)us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |  |
Extensions, discoveries and improved recoveries | 1,583,292 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember | 1,352,746 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |  |
Purchase of reserves in place | 0 us-gaap_ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlace / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember | 0 us-gaap_ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlace / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |  |
Sales of reserves in place | (330,871)us-gaap_ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember | 0 us-gaap_ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |  |
Production | (329,828)us-gaap_ProvedDevelopedAndUndevelopedReservesProduction / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember | (343,719)us-gaap_ProvedDevelopedAndUndevelopedReservesProduction / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |  |
End of year | 4,119,736 us-gaap_ProvedDevelopedAndUndevelopedReservesNet / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember | 3,459,713 us-gaap_ProvedDevelopedAndUndevelopedReservesNet / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember | 2,613,643 us-gaap_ProvedDevelopedAndUndevelopedReservesNet / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |
Proved developed reserves at end of year | 1,754,668 us-gaap_ProvedDevelopedReservesVolume / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember | 1,875,528 us-gaap_ProvedDevelopedReservesVolume / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |  |
Pricing used in cash flow estimates (in BBLS or MCFE) | 94.99 us-gaap_AverageSalesPrices / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember | 96.78 us-gaap_AverageSalesPrices / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember | 94.71 us-gaap_AverageSalesPrices / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |
Natural Gas or NGL (MCFE) [Member] |  |  |  |  |
Proved Developed and Undeveloped Reserves [Roll forward] |  |  |  |  |
Beginning of year | 2,371,908 useg_ProvedDevelopedAndUndevelopedReservesNetNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | 1,798,088 useg_ProvedDevelopedAndUndevelopedReservesNetNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember |  |  |
Revisions of previous quantity estimates | 802,241 useg_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | 382,690 useg_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember |  |  |
Extensions, discoveries and improved recoveries | 1,006,659 useg_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditionsNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | 678,412 useg_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditionsNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember |  |  |
Purchase of reserves in place | 0 useg_ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlaceNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | 0 useg_ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlaceNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember |  |  |
Sales of reserves in place | (156,482)useg_ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlaceNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | 0 useg_ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlaceNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember |  |  |
Production | (813,081)useg_ProvedDevelopedAndUndevelopedReservesProductionNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | (487,282)useg_ProvedDevelopedAndUndevelopedReservesProductionNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember |  |  |
End of year | 3,211,245 useg_ProvedDevelopedAndUndevelopedReservesNetNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | 2,371,908 useg_ProvedDevelopedAndUndevelopedReservesNetNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | 1,798,088 useg_ProvedDevelopedAndUndevelopedReservesNetNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember |  |
Proved developed reserves at end of year | 1,892,446 useg_ProvedDevelopedReservesVolumeNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | 1,701,282 useg_ProvedDevelopedReservesVolumeNaturalGasOrNgl / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember |  |  |
Pricing used in cash flow estimates (in BBLS or MCFE) | 4.35 us-gaap_AverageSalesPrices / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | 3.67 us-gaap_AverageSalesPrices / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | 2.757 us-gaap_AverageSalesPrices / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember |  |

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- Definition The costs related to acquiring, exploring and developing oil and gas properties for future capitalization of minerals or oil on said properties. + References No definition available. + Details
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- Definition Represents the period prior to the end of reporting period during which unescalated average prices per barrel of oil and per MMbtu of natural gas are calculated. + References No definition available. + Details
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- Definition Additions to proved reserves relating to natural gas or NGL that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields. + References No definition available. + Details
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- Definition The net quantity of proved reserves relating to natural gas or natural gas liquids (NGL) as of the balance sheet date. + References No definition available. + Details
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- Definition Revisions represent changes in previous estimates of proved reserves relating to natural gas or NGL, either upward or downward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors. + References No definition available. + Details
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- Definition Sales of minerals in place relating to natural gas or NGL. + References No definition available. + Details
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- Definition Net quantities of an enterprise's interests in proved developed reserves of natural gas of NGL that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as "barrels" for oil and synthetic oil reserves or "cubic feet" or "cubic meters" for natural gas and synthetic gas reserves. + References No definition available. + Details
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of passage of time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 + Details
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- Definition The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph c -Subparagraph 3(ii)(A) -Article 4 + Details
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- Definition The capitalized costs incurred (excluded from amortization), as of the date of the balance sheet, to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 + Details
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- Definition Amortization computed on the basis of physical units, with oil and gas converted to a common unit of measure on the basis of their approximate relative energy content. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(i)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph c -Subparagraph 7 -Article 4 + Details
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- Definition The revenues derived from sales of oil or gas in each geographic area during the reporting period divided by the number of barrels of oil produced or thousands of cubic feet of gas produced. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Industry Guide -Number 2 -Paragraph 3 -Subparagraph A + Details
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- Definition The sum of the capitalized costs incurred during the period of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph c -Subparagraph 3(ii)(A) -Article 4 + Details
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- Definition The sum of the capitalized costs incurred, as of the balance sheet date, of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 + Details
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- Definition The sum of capitalized costs relating to oil and gas producing activities before accounting for accumulated depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61901-109447 + Details
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- Definition Capitalized costs of proved properties incurred for any combination mineral interests acquisitions; wells and related equipment; support equipment and facilities; and uncompleted wells and equipment and other costs not previously disclosed within this table. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61901-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Glossary Proved Properties -URI http://asc.fasb.org/extlink&oid=6522428 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Properties -URI http://asc.fasb.org/extlink&oid=21914647 + Details
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- Definition Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62038-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 18 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62014-109447 + Details
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- Definition The capitalized costs incurred during the period (excluded from amortization) in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. Exploration costs also include costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, the maintenance of land and lease records, dry hole contributions and bottom hole contributions, costs of drilling and equipping exploratory wells and costs of drilling exploratory-type stratigraphic test wells. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph a -Subparagraph 15 -Article 4 + Details
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- Definition The capitalized costs incurred (excluded from amortization), as of the date of the balance sheet, in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. Exploration costs also include costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, the maintenance of land and lease records, dry hole contributions and bottom hole contributions, costs of drilling and equipping exploratory wells and costs of drilling exploratory-type stratigraphic test wells. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 + Details
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- Definition Amount of estimated future accumulated cash outflow for costs to be incurred in developing proved oil and gas reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62424-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 31 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62455-109447 + Details
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- Definition Amount of estimated future accumulated cash outflow for income tax, based on the future income less future expense derived from production and sale of proved oil and gas reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62424-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 31 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62455-109447 + Details
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- Definition Additions to proved reserves that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 + Details
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- Definition The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(a)(2)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph a -Subparagraph 2 -Article 4 + Details
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- Definition Production of proved reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 + Details
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- Definition Purchase of minerals in place. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 + Details
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- Definition Revisions represent changes in previous estimates of proved reserves, either upward or downward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 + Details
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- Definition Sales of minerals in place. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 + Details
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- Definition Net quantities of an enterprise's interests in proved developed reserves of either crude oil (including condensate and natural gas liquids), natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as "barrels" for oil and synthetic oil reserves or "cubic feet" or "cubic meters" for natural gas and synthetic gas reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61797-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61884-109447 + Details
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- Definition Depreciation, depletion and amortization, and valuation provisions (impairments) related to oil and gas producing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447 + Details
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- Definition The amount of expenses related to oil and gas producing activities. + References No definition available. + Details
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- Definition Costs related to the impairment of oil and gas properties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(3)(ii)(A)(1)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 + Details
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- Definition Income before income taxes for oil and gas producing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447 + Details
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- Definition Production (lifting) costs from oil and gas producing activities, including but not limited to lease operating expense, production and ad valorem taxes, and transportation expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447 + Details
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of revisions of estimated quantity of oil and gas in proved reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 + Details
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- Definition Amount of (increase) decrease in standardized measure of discounted future net cash flow as a result of sales and transfers of oil and gas produced. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 + Details
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- Definition Amount of discounted future accumulated cash inflow relating to proved oil and gas reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62424-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=34713648&loc=d3e63123-109448 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 31 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62455-109447 + Details
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