XML 65 R26.htm IDEA: XBRL DOCUMENT
v2.4.0.6

4. PREPAID EXPENSES AND OTHER CURRENT ASSETS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2012
Prepaid Expenses And Other Current Assets |
Prepaid expenses and other current assets |
|  | December 31, 2012 |  |  | December 31, 2011 |
Prepaid Investment Advisory Services |  | $ | 48,675 |  |  | $ | 27,401 |
Prepaid Insurance |  |  | 14,506 |  |  |  | 16,460 |
Total prepaid expenses and other current assets |  | $ | 63,181 |  |  | $ | 43,861 |

X
- Details
Name: | evsi_PrepaidExpensesAndOtherCurrentAssetsAbstract
Namespace Prefix: | evsi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amounts of other current assets. + References No definition available. + Details
Name: | us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration