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Income Taxes (Details Textual) (USD $)
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Jun. 30, 2012
Sep. 30, 2012
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jun. 30, 2013
Operating Loss Carryforwards [Line Items]                
Effective Income Tax Rate Reconciliation, Percent         36.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations      
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance         $ 0us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance $ 8,885,000us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance $ (10,260,000)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance  
Effective Income Tax Rate Reconciliation, Change in State Deferred Tax Assets Valuation Allowance, Amount         30,000mtdr_EffectiveIncomeTaxRateReconciliationChangeinStateDeferredTaxAssetsValuationAllowanceAmount 1,345,000mtdr_EffectiveIncomeTaxRateReconciliationChangeinStateDeferredTaxAssetsValuationAllowanceAmount 0mtdr_EffectiveIncomeTaxRateReconciliationChangeinStateDeferredTaxAssetsValuationAllowanceAmount  
Net capitalized costs less related deferred income taxes exceeded the full-cost ceiling 13,700,000us-gaap_UnamortizedCostsCapitalizedLessRelatedDeferredIncomeTaxesExceedCeilingLimitationExpense   21,300,000us-gaap_UnamortizedCostsCapitalizedLessRelatedDeferredIncomeTaxesExceedCeilingLimitationExpense 2,300,000us-gaap_UnamortizedCostsCapitalizedLessRelatedDeferredIncomeTaxesExceedCeilingLimitationExpense 0us-gaap_UnamortizedCostsCapitalizedLessRelatedDeferredIncomeTaxesExceedCeilingLimitationExpense   17,300,000us-gaap_UnamortizedCostsCapitalizedLessRelatedDeferredIncomeTaxesExceedCeilingLimitationExpense  
Impairment charge of net capitalized costs 21,200,000us-gaap_ImpairmentOfOilAndGasProperties 26,700,000us-gaap_ImpairmentOfOilAndGasProperties 33,200,000us-gaap_ImpairmentOfOilAndGasProperties 3,600,000us-gaap_ImpairmentOfOilAndGasProperties 0us-gaap_ImpairmentOfOilAndGasProperties 21,229,000us-gaap_ImpairmentOfOilAndGasProperties 63,475,000us-gaap_ImpairmentOfOilAndGasProperties  
Deferred income tax credit 7,500,000us-gaap_IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves   11,900,000us-gaap_IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves 1,300,000us-gaap_IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves     9,400,000us-gaap_IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves  
Increase in valuation allowance           7,900,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount    
Valuation allowance against net deferred tax assets 15,800,000us-gaap_DeferredTaxAssetsValuationAllowance     2,400,000us-gaap_DeferredTaxAssetsValuationAllowance   10,300,000us-gaap_DeferredTaxAssetsValuationAllowance   6,700,000us-gaap_DeferredTaxAssetsValuationAllowance
Internal Revenue Service (IRS) [Member]                
Operating Loss Carryforwards [Line Items]                
Operating loss carryforwards         242,000,000us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_InternalRevenueServiceIRSMember		      
State and Local Jurisdiction [Member]                
Operating Loss Carryforwards [Line Items]                
Operating loss carryforwards         $ 3,800,000us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember