Consolidated Statements of Changes in Stockholders Deficit (USD $)	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
Beginning balance, value at Dec. 31, 2012	$ 58,098	$ 22,715,994	$ (24,822,188)	$ (2,048,096)us-gaap_StockholdersEquity
Beginning balance, shares at Dec. 31, 2012	58,097,609
Stock Issued for Cash	12,901	1,922,299		1,935,200
Stock Issued for Cash (Shares)	12,901,333
Cash Offering Costs		(154,816)		(154,816)
Stock Issued for Services	554	91,666		92,220
Stock Issued for Services (Shares)	554,000
Stock Issued in Conversion of Convertible Note				0
Stock Issued in Settlement of Note Payable	150	28,350		28,500
Stock Issued in Settlement of Note Payable (Shares)	150,000
Stock Issued in Settlement of Interest				0evsi_StockIssuedInSettlementOfInterest
Warrants Issued as Conversion Inducement				0
Stock Option Expense		435,028		435,028us-gaap_ShareBasedCompensation
Net Loss			(2,793,910)	(2,793,910)us-gaap_NetIncomeLoss
Ending balance, value at Dec. 31, 2013	71,703	25,038,521	(27,616,098)	(2,505,874)us-gaap_StockholdersEquity
Ending balance, shares at Dec. 31, 2013	71,702,942
Stock Issued for Cash	20,187	3,007,823		3,028,010
Stock Issued for Cash (Shares)	20,186,725
Cash Offering Costs		(102,840)		(102,840)
Stock Issued for Services - Related Party	617	91,911		92,528evsi_StockIssuedForServicesRelatedParty
Stock Issued for Services - Related Party (Shares)	616,856
Stock Issued for Services	1,125	167,627		168,752
Stock Issued for Services (Shares)	1,125,012
Stock Issued in Conversion of Convertible Note	3,667	546,333		550,000
Stock Issued in Conversion of Convertible Note (Shares)	3,666,666
Stock Issued in Settlement of Note Payable	150	23,850		24,000
Stock Issued in Settlement of Note Payable (Shares)	150,000
Stock Issued in Settlement of Interest	1,034	174,816		175,850evsi_StockIssuedInSettlementOfInterest
Stock Issued in Settlement of Interest (Shares)	1,034,410
Warrants Issued as Conversion Inducement		482,300		482,300
Warrants Issued for Debt Extension Fee		193,625		193,625
Stock Option Expense		457,152		457,152us-gaap_ShareBasedCompensation
Net Loss			(3,146,302)	(3,146,302)us-gaap_NetIncomeLoss
Ending balance, value at Dec. 31, 2014	$ 98,483	$ 30,081,118	$ (30,762,400)	$ (582,799)us-gaap_StockholdersEquity
Ending balance, shares at Dec. 31, 2014	98,482,611

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Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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