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Significant accounting policies (Details Narrative) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Significant Accounting Policies Details Narrative
Options and warrants, outstanding	$ 3,287,500	$ 6,250

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- References

No definition available.

+ Details

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Namespace Prefix:	EMPR_
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Balance Type:	na
Period Type:	duration

X

- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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Balance Type:	credit
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