XML 20 R56.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Long-Lived Assets (USD $) In Thousands, unless otherwise specified | Sep. 30, 2013 | Dec. 31, 2012
--- | --- | ---
Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Long-Lived Assets [Line Items] |  |
Long-lived assets, net | $ 1,572 | $ 2,408
United States [Member] |  |
Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Long-Lived Assets [Line Items] |  |
Long-lived assets, net | 1,533 | 2,350
International [Member] |  |
Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Long-Lived Assets [Line Items] |  |
Long-lived assets, net | $ 39 | $ 58

X
- Details
Name: | efoi_Note10SegmentsandGeographicInformationDetailsSummaryofGeographicLongLivedAssetsLineItems
Namespace Prefix: | efoi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
Name: | us-gaap_NoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant