Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues
Oil and natural gas revenues	$ 367,712us-gaap_OilAndGasSalesRevenue	$ 269,030us-gaap_OilAndGasSalesRevenue	$ 155,998us-gaap_OilAndGasSalesRevenue
Realized gain (loss) on derivatives	5,022us-gaap_GainLossOnSaleOfDerivatives	(909)us-gaap_GainLossOnSaleOfDerivatives	13,960us-gaap_GainLossOnSaleOfDerivatives
Unrealized gain (loss) on derivatives	58,302us-gaap_UnrealizedGainLossOnDerivatives	(7,232)us-gaap_UnrealizedGainLossOnDerivatives	(4,802)us-gaap_UnrealizedGainLossOnDerivatives
Total revenues	431,036us-gaap_Revenues	260,889us-gaap_Revenues	165,156us-gaap_Revenues
Expenses
Production taxes and marketing	33,172mtdr_ProductionTaxesAndMarketing	20,973mtdr_ProductionTaxesAndMarketing	11,672mtdr_ProductionTaxesAndMarketing
Lease operating	51,353us-gaap_LeaseOperatingExpense	38,720us-gaap_LeaseOperatingExpense	28,184us-gaap_LeaseOperatingExpense
Depletion, depreciation and amortization	134,737	98,395	80,454
Accretion of asset retirement obligations	504	348	256
Full-cost ceiling impairment	0us-gaap_ImpairmentOfOilAndGasProperties	21,229us-gaap_ImpairmentOfOilAndGasProperties	63,475us-gaap_ImpairmentOfOilAndGasProperties
General and administrative	32,152us-gaap_GeneralAndAdministrativeExpense	20,779us-gaap_GeneralAndAdministrativeExpense	14,543us-gaap_GeneralAndAdministrativeExpense
Total expenses	251,918us-gaap_CostsAndExpenses	200,444us-gaap_CostsAndExpenses	198,584us-gaap_CostsAndExpenses
Operating income (loss)	179,118us-gaap_OperatingIncomeLoss	60,445us-gaap_OperatingIncomeLoss	(33,428)us-gaap_OperatingIncomeLoss
Other income (expense)
Net loss on asset sales and inventory impairment	0	(192)	(485)
Interest expense	(5,334)us-gaap_InterestExpense	(5,687)us-gaap_InterestExpense	(1,002)us-gaap_InterestExpense
Interest and other income	1,345us-gaap_InterestAndOtherIncome	225us-gaap_InterestAndOtherIncome	224us-gaap_InterestAndOtherIncome
Total other expense	(3,989)us-gaap_OtherNonoperatingIncomeExpense	(5,654)us-gaap_OtherNonoperatingIncomeExpense	(1,263)us-gaap_OtherNonoperatingIncomeExpense
Income (loss) before income taxes	175,129	54,791	(34,691)
Income tax provision (benefit)
Current	133us-gaap_CurrentIncomeTaxExpenseBenefit	404us-gaap_CurrentIncomeTaxExpenseBenefit	0us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred	64,242us-gaap_DeferredIncomeTaxExpenseBenefit	9,293us-gaap_DeferredIncomeTaxExpenseBenefit	(1,430)us-gaap_DeferredIncomeTaxExpenseBenefit
Total income tax provision (benefit)	64,375us-gaap_IncomeTaxExpenseBenefit	9,697us-gaap_IncomeTaxExpenseBenefit	(1,430)us-gaap_IncomeTaxExpenseBenefit
Net income (loss)	110,754us-gaap_ProfitLoss
Net Income (Loss) Attributable to Noncontrolling Interest	17	0	0
Net income (loss)	$ 110,771us-gaap_NetIncomeLoss	$ 45,094us-gaap_NetIncomeLoss	$ (33,261)us-gaap_NetIncomeLoss
Basic
Basic	70,229	58,777	53,957
Diluted
Diluted	70,906	58,929	53,957
Class A
Basic
Basic (usd per share)	$ 1.58	$ 0.77	$ (0.62)
Diluted
Diluted (usd per share)	$ 1.56	$ 0.77	$ (0.62)
Basic
Basic	70,229	58,777	53,852
Diluted
Diluted	70,906	58,929	53,852
Class B
Basic
Basic (usd per share)	$ 0.00	$ 0.00	$ (0.35)
Diluted
Diluted (usd per share)	$ 0.00	$ 0.00	$ (0.35)
Basic
Basic	0	0	105

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Paragraph 9

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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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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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