XML 69 R40.htm IDEA: XBRL DOCUMENT v3.20.1

Derivative Financial Instruments (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net cash receipts from (payments on) derivatives:	$ 370,356	$ 4,716
Oil derivatives [Member]
Net cash receipts from (payments on) derivatives:	358,799	16,629
Natural gas derivatives [Member]
Net cash receipts from (payments on) derivatives:	$ 11,557	$ (11,913)

X

- References

No definition available.

+ Details

Name:	empr_NetCashReceiptsFromPaymentsOnDerivatives
Namespace Prefix:	empr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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

X

- Details

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