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Property and equipment (Details Narrative) (USD $)	Dec. 31, 2013
Property And Equipment Details Narrative
Total other property and equipment,	$ 2,561us-gaap_PropertyPlantAndEquipmentOtherNet

X

- Details

Name:	EMPR_PropertyAndEquipmentDetailsNarrativeAbstract
Namespace Prefix:	EMPR_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The net amount of capitalized assets classified as property, plant and equipment not otherwise defined in the taxonomy.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentOtherNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant