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Property and Equipment (Details) (USD $) | 9 Months Ended |
--- | --- | ---
Mar. 31, 2015 well | Jun. 30, 2014
Property, Plant and Equipment [Abstract] |  |
Installation costs of artificial lift technology | $ 225,883 us-gaap_CostOfServicesOilAndGas |
Wells installed with artificial lift technology, for third-party customer (total wells in the program) | 2 epm_OilandGasNumberofWellsInstalledwithArtificialLiftTechnologyforThirdPartyCustomer |
Wells installed with artificial lift technology, for third-party customer | 5 epm_OilandGasWellsInstalledwithArtificialLiftTechnologyforThirdPartyCustomerNumberofWellsinProgram |
Percentage of net profits from production | 25.00%epm_OilAndGasContractsPercentageofNetProfitsfromProductionReceivedFromThirdPartyCustomer |
Additional depreciation | 273,301 epm_CostOfServicesDepreciationRelatedToRemovedandReinstalledWell |
Number of wells removed and installed with artificial lift technology | 3 epm_OilandGasNumberofWellsRemovedandInstalledwithArtificialLiftTechnologyforThirdPartyCustomer |
Oil and natural gas properties |  |
Property costs subject to amortization | 51,722,157 us-gaap_OilAndGasPropertyFullCostMethodGross | 47,166,282 us-gaap_OilAndGasPropertyFullCostMethodGross
Less: Accumulated depreciation, depletion, and amortization | (11,372,217)us-gaap_OilAndGasPropertyFullCostMethodDepletion | (9,344,212)us-gaap_OilAndGasPropertyFullCostMethodDepletion
Unproved properties not subject to amortization | 0 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative | 0 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative
Oil and natural gas property and equipment, net (full-cost method of accounting) | 40,349,940 us-gaap_OilAndGasPropertyFullCostMethodNet | 37,822,070 us-gaap_OilAndGasPropertyFullCostMethodNet
Other property and equipment |  |
Furniture, fixtures and office equipment, at cost | 288,732 us-gaap_PropertyPlantAndEquipmentOther | 343,178 us-gaap_PropertyPlantAndEquipmentOther
Artificial lift technology equipment, at cost | 330,525 epm_PropertyPlantAndEquipmentOilAndGasTechnologyEquipmentGross | 377,943 epm_PropertyPlantAndEquipmentOilAndGasTechnologyEquipmentGross
Less: Accumulated depreciation | (310,846)us-gaap_PropertyPlantAndEquipmentOtherAccumulatedDepreciation | (296,294)us-gaap_PropertyPlantAndEquipmentOtherAccumulatedDepreciation
Other property and equipment, net | $ 308,411 us-gaap_PropertyPlantAndEquipmentOtherNet | $ 424,827 us-gaap_PropertyPlantAndEquipmentOtherNet

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- Definition Oil And Gas Contracts, Percentage of Net Profits from Production Received From Third Party Customer + References No definition available. + Details
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- Definition Oil and Gas, Number of Wells Installed with Artificial Lift Technology for Third Party Customer + References No definition available. + Details
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- Definition Oil and Gas, Number of Wells Removed and Installed with Artificial Lift Technology for Third Party Customer + References No definition available. + Details
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- Definition Oil and Gas, Wells Installed with Artificial Lift Technology for Third Party Customer, Number of Wells in Program + References No definition available. + Details
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- Definition Property, Plant, And Equipment, Oil And Gas Technology Equipment, Gross + References No definition available. + Details
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- Definition The sum of the capitalized costs incurred, as of the balance sheet date, of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 + Details
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- Definition Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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