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Earnings (Loss) per Share (Details Narrative)	Dec. 31, 2023 shares
Net Income (Loss) per Common Share:
Options outstanding that were not included in the calculation of earnings per share	348,000

X

- Definition

The element represents share based compensation arrangement by share based payment award options outstanding number.

+ References

No definition available.

+ Details

Name:	empr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber1
Namespace Prefix:	empr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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