XML 59 R53.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Property and Equipment - Summary of Property and Equipment (Details) - USD ($) | Jun. 30, 2015 | Jun. 30, 2014
--- | --- | ---
Oil and natural gas properties |  |
Property costs subject to amortization | $ 57,718,653 | $ 47,166,282
Less: Accumulated depreciation, depletion, and amortization | (12,531,767) | (9,344,212)
Unproved properties not subject to amortization | 0 | 0
Oil and natural gas properties, net | 45,186,886 | 37,822,070
Other property and equipment |  |
Furniture, fixtures and office equipment, at cost | 287,680 | 343,178
Artificial lift technology equipment, at cost | 319,994 | 377,943
Less: Accumulated depreciation | (330,918) | (296,294)
Other property and equipment, net | $ 276,756 | $ 424,827

X
- Definition Property, Plant, And Equipment, Oil And Gas Technology Equipment, Gross + References No definition available. + Details
Name: | epm_PropertyPlantAndEquipmentOilAndGasTechnologyEquipmentGross
Namespace Prefix: | epm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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=50486907&loc=d3e511914-122862 + Details
Name: | us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_OilAndGasPropertyAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Depletion of oil and gas property carried under the full cost method. + References No definition available. + Details
Name: | us-gaap_OilAndGasPropertyFullCostMethodDepletion
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Oil and gas properties, gross, carried under the full cost method. + References No definition available. + Details
Name: | us-gaap_OilAndGasPropertyFullCostMethodGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Oil and gas properties, net of depletion, carried under the full cost method. + References No definition available. + Details
Name: | us-gaap_OilAndGasPropertyFullCostMethodNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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
Name: | us-gaap_PropertyPlantAndEquipmentOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cumulative amount of depreciation (related to capitalized assets classified as property, plant and equipment not otherwise defined in the taxonomy) that has been recognized in the income statement. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentOtherAccumulatedDepreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The net amount of capitalized assets classified as property, plant and equipment not otherwise defined in the taxonomy. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentOtherNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentOtherNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration