XML 29 R29.htm IDEA: XBRL DOCUMENT v3.19.3

DERIVATIVE FINANCIAL INSTRUMENTS (Details 2) - Oil Swaps [Member]	Dec. 31, 2021 $ / shares	Dec. 31, 2020 $ / shares	Sep. 30, 2019 $ / shares
First quarter [Member]
Volume (Mbbl)
Price per Bbl
First quarter [Member] | Subsequent Event [Member]
Volume (Mbbl)	15.51	23.41
Price per Bbl	$ 49.29	$ 60.32
Second quarter [Member]
Volume (Mbbl)
Price per Bbl
Second quarter [Member] | Subsequent Event [Member]
Volume (Mbbl)	6.69	23.17
Price per Bbl	$ 49.25	$ 59.53
Third quarter [Member]
Volume (Mbbl)
Price per Bbl
Third quarter [Member] | Subsequent Event [Member]
Volume (Mbbl)	4.5	22.94
Price per Bbl	$ 49.11	$ 58.26
Fourth quarter [Member]
Volume (Mbbl)			24.58
Price per Bbl			$ 61.37
Fourth quarter [Member] | Subsequent Event [Member]
Volume (Mbbl)		20.94
Price per Bbl		$ 55.09

X

- References

No definition available.

+ Details

Name:	EMPR_PricePerBbl
Namespace Prefix:	EMPR_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	EMPR_VolumeMbbl
Namespace Prefix:	EMPR_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_CreditDerivativesByContractTypeAxis=EMPR_OilSwapsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=EMPR_FirstQuarterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=EMPR_SecondQuarterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=EMPR_ThirdQuarterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=EMPR_FourthQuarterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: