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FINANCIAL INSTRUMENTS AND RISK (Narrative) (Details) - Dec. 31, 2024	CAD ($)	USD ($)
FINANCIAL INSTRUMENTS AND RISK
Cash, CDIC insured amount	$ 100,000
Cash, FDIC insured amount		$ 250,000
Working capital		$ 118,418,042

X

- Definition

The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Canada Deposit Insurance Corporation.

+ References

No definition available.

+ Details

Name:	epix_CashCanadaDepositInsuranceCorporationInsuredAmount
Namespace Prefix:	epix_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

na

+ References

No definition available.

+ Details

Name:	epix_FinancialInstrumentsAndRiskAbstract
Namespace Prefix:	epix_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents amount of working capital.

+ References

No definition available.

+ Details

Name:	epix_WorkingCapital
Namespace Prefix:	epix_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

+ References

No definition available.

+ Details

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