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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
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Mar. 31, 2015
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Mar. 31, 2014
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Mar. 31, 2015
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Mar. 31, 2014
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| Income Tax Contingency [Line Items] | ||||
| Effective tax rate | 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations | ||
| Deferred tax assets | $ 3,580us-gaap_DeferredTaxAssetsLiabilitiesNet | $ 3,580us-gaap_DeferredTaxAssetsLiabilitiesNet | ||
| Basis difference in foreign subsidiaries | 9,308mpet_DeferredTaxLiabilitiesBasisDifferenceinForeignSubsidiaries | 9,308mpet_DeferredTaxLiabilitiesBasisDifferenceinForeignSubsidiaries | ||
| Income tax expense | 43us-gaap_IncomeTaxExpenseBenefit | 0us-gaap_IncomeTaxExpenseBenefit | 43us-gaap_IncomeTaxExpenseBenefit | 0us-gaap_IncomeTaxExpenseBenefit |
| Montana | State | ||||
| Income Tax Contingency [Line Items] | ||||
| Income tax expense |
$ 43us-gaap_IncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember / us-gaap_StatementGeographicalAxis = stpr_MT |
$ 43us-gaap_IncomeTaxExpenseBenefit / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember / us-gaap_StatementGeographicalAxis = stpr_MT |
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- Definition
Deferred Tax Liabilities, Basis Difference in Foreign Subsidiaries No definition available.
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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