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The following table represents the Company’s net cash payments on derivatives: (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2024
Investments, All Other Investments [Abstract] |  |  |
Cash payments on oil derivatives, net | $ 0 | $ (253) | $ (263)

X
- Definition The element represents net cash receipts from payments on derivatives. + References No definition available. + Details
Name: | empr_NetCashReceiptsFromPaymentsOnDerivatives
Namespace Prefix: | empr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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