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4. SUBSCRIPTION RECEIVABLE (Details Narrative) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Subscription Receivable Details Narrative
Subscriptions receivable	$ 0	$ 25,000

X

- References

No definition available.

+ Details

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Namespace Prefix:	evsi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of subscription receivable from investors who have been allocated common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 30
-Article 5

+ Details

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