Employee Severance Costs (Details) (USD $)
In Thousands, unless otherwise specified |
9 Months Ended | |
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Mar. 31, 2014
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Mar. 31, 2015
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Employee Severance, Termination Benefits [Member] | ||
Restructuring Cost and Reserve [Line Items] | ||
Restructuring Charges |
$ 250us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = mpet_EmployeeSeveranceTerminationBenefitsMember |
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Discontinued Operations [Member] | Employee Severance [Member] | ||
Restructuring Cost and Reserve [Line Items] | ||
Restructuring Charges |
1,500us-gaap_RestructuringCharges / us-gaap_IncomeStatementLocationAxis = us-gaap_SegmentDiscontinuedOperationsMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
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General and Administrative Expense [Member] | Employee Severance [Member] | ||
Restructuring Cost and Reserve [Line Items] | ||
Restructuring Charges |
$ 475us-gaap_RestructuringCharges / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
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- Definition
Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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