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Revenue Recognition (Details)	12 Months Ended
	Jun. 30, 2023
Minimum
Revenue Recognition
Period of receives payment from the sale of oil and natural gas production	1 month
Number of production received by field operators	1 month
Maximum
Revenue Recognition
Period of receives payment from the sale of oil and natural gas production	2 months
Number of production received by field operators	2 months

X

- Definition

Represents the Period of production received by field operators

+ References

No definition available.

+ Details

Name:	epm_PeriodOfProductionReceivedByFieldOperators
Namespace Prefix:	epm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Period of receives payment from the sale of oil and natural gas production.

+ References

No definition available.

+ Details

Name:	epm_PeriodOfReceivesPaymentFromSaleOfOilAndNaturalGasProductions
Namespace Prefix:	epm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: