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Consolidated Statement of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Revenues
Oil and gas sales	$ 91,045us-gaap_OilAndGasSalesRevenue	$ 92,785us-gaap_OilAndGasSalesRevenue
Realized gain (loss) on derivative instruments, net	135us-gaap_GainLossOnDerivativeInstrumentsNetPretax	(1,322)us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Field service income	26,270us-gaap_OilAndGasRevenue	24,934us-gaap_OilAndGasRevenue
Administrative overhead fees	9,373us-gaap_AdministrativeServicesRevenue	9,255us-gaap_AdministrativeServicesRevenue
Unrealized gain (loss) on derivative instruments	17,574us-gaap_UnrealizedGainLossOnDerivatives	(649)us-gaap_UnrealizedGainLossOnDerivatives
Other income	183us-gaap_OtherIncome	64us-gaap_OtherIncome
Total Revenues	144,580us-gaap_Revenues	125,067us-gaap_Revenues
Costs and Expenses
Lease operating expense	43,972us-gaap_LeaseOperatingExpense	43,809us-gaap_LeaseOperatingExpense
Field service expense	21,185us-gaap_CostOfServices	21,027us-gaap_CostOfServices
Depreciation, depletion, amortization and accretion on discounted liabilities	25,864us-gaap_DepreciationDepletionAndAmortization	21,861us-gaap_DepreciationDepletionAndAmortization
(Gain) Loss on settlement of asset retirement obligations	(1,797)pnrg_GainLossOnSettlementOfAssetRetirementObligations	40pnrg_GainLossOnSettlementOfAssetRetirementObligations
General and administrative expense	14,460us-gaap_GeneralAndAdministrativeExpense	16,659us-gaap_GeneralAndAdministrativeExpense
Exploration costs		8us-gaap_ExplorationCosts
Total Costs and Expenses	103,684us-gaap_CostsAndExpenses	103,404us-gaap_CostsAndExpenses
Gain on Sale and Exchange of Assets	6,115us-gaap_GainLossOnSaleOfPropertyPlantEquipment	2,816us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Income from Operations	47,011us-gaap_OperatingIncomeLoss	24,479us-gaap_OperatingIncomeLoss
Other Income and Expenses
Less: Interest expense	4,018us-gaap_InterestExpense	4,223us-gaap_InterestExpense
Add: Interest income		2us-gaap_InvestmentIncomeInterest
Income Before Provision for Income Taxes	42,993us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	20,258us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Provision for Income Taxes	13,844us-gaap_IncomeTaxExpenseBenefit	6,818us-gaap_IncomeTaxExpenseBenefit
Net Income	29,149us-gaap_ProfitLoss	13,440us-gaap_ProfitLoss
Less: Net Income Attributable to Non-Controlling Interest	2,103us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	1,169us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net Income Attributable to PrimeEnergy	$ 27,046us-gaap_NetIncomeLoss	$ 12,271us-gaap_NetIncomeLoss
Basic Income Per Common Share	$ 11.45us-gaap_EarningsPerShareBasic	$ 5.04us-gaap_EarningsPerShareBasic
Diluted Income Per Common Share	$ 8.68us-gaap_EarningsPerShareDiluted	$ 3.86us-gaap_EarningsPerShareDiluted

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Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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