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Commitments and Contingencies (Details) (USD $)
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3 Months Ended | 0 Months Ended | ||
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Dec. 31, 2014
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Jan. 14, 2013
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Jun. 30, 2014
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Sep. 30, 2011
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| Purchase Commitment, Excluding Long-term Commitment [Line Items] | ||||
| Cash call, amount | $ 2,000,000mpet_PrepaymentsandCallsPayableOtherInvestment | |||
| Percent of interest in contingent payments | 52.00%mpet_BusinessAcquisitionContingentConsiderationPotentialCashPaymentInterestPercentage | |||
| Accrued income taxes | 1,600,000us-gaap_AccruedIncomeTaxesCurrent | 1,600,000us-gaap_AccruedIncomeTaxesCurrent | ||
| Income taxes receivable | 1,600,000us-gaap_IncomeTaxesReceivableNoncurrent | 1,600,000us-gaap_IncomeTaxesReceivableNoncurrent | ||
| Nautilus Purchase and Sale Agreement (PSA) | ||||
| Purchase Commitment, Excluding Long-term Commitment [Line Items] | ||||
| Future contingent production payments payable |
5,000,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = mpet_NautilusPurchaseAndSaleAgreementPsaMember |
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| Sopak Collateral Agreement | Common Stock | ||||
| Purchase Commitment, Excluding Long-term Commitment [Line Items] | ||||
| Number of shares available for purchase |
9,264,637us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = mpet_SopakCollateralAgreementMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
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| Sopak Collateral Agreement | Warrant | ||||
| Purchase Commitment, Excluding Long-term Commitment [Line Items] | ||||
| Number of shares available for purchase |
4,347,826us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = mpet_SopakCollateralAgreementMember / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember |
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| MI3 | ||||
| Purchase Commitment, Excluding Long-term Commitment [Line Items] | ||||
| Contingent bonuses payable |
$ 255,000mpet_ContingentBonusesPayable / us-gaap_CounterpartyNameAxis = mpet_MI3PetroleumEngineeringMember |
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- Definition
Business Combination, Contingent Consideration, Potential Cash Payment, Interest, Percentage No definition available.
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- Definition
Contingent Bonuses Payable No definition available.
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- Definition
Prepayments and Calls Payable, Other Investment No definition available.
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- Definition
Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of shares of equity interests issued or issuable to acquire entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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