XML 39 R28.htm IDEA: XBRL DOCUMENT v3.19.1

DERIVATIVE FINANCIAL INSTRUMENTS (Details 1) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net cash receipts from (payments on) derivatives:	$ 19,755
Oil derivatives [Member]
Net cash receipts from (payments on) derivatives:	19,349
Natural gas derivatives [Member]
Net cash receipts from (payments on) derivatives:	$ 406

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: