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Other Assets - Schedule of Other Assets (Details) - USD ($)	Mar. 31, 2022	Jun. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Acquisition deposit	$ 1,470,000	$ 0
Right of use asset under operating lease	161,125	161,125
Less: Accumulated amortization of right of use asset	(127,038)	(90,336)
Other assets, net	$ 1,504,087	$ 70,789

X

- Definition

Operating Lease, Right-Of-Use Asset, Accumulated Amortization

+ References

No definition available.

+ Details

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Namespace Prefix:	epm_
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Balance Type:	credit
Period Type:	instant

X

- Definition

Operating Lease, Right-Of-Use Asset, Gross

+ References

No definition available.

+ Details

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Namespace Prefix:	epm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of deferred cost assets and assets classified as other.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- Definition

The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8,17)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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