Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000924168-21-000050-index-headers.html | 2021-11-12 08:16:31 | |
| 0000924168-21-000050-index.html | 2021-11-12 08:16:31 | |
| 0000924168-21-000050.txt | 2021-11-12 08:16:31 | |
 0000924168-21-000050-xbrl.zip | 33753 | 2021-11-12 08:16:31 |
| efoi-20211112.htm | 37673 | 2021-11-12 08:16:31 |
| efoi-20211112.xsd | 2186 | 2021-11-12 08:16:31 |
| efoi-20211112_def.xml | 4395 | 2021-11-12 08:16:31 |
| efoi-20211112_htm.xml | 11655 | 2021-11-12 08:16:31 |
| efoi-20211112_lab.xml | 26969 | 2021-11-12 08:16:31 |
| efoi-20211112_pre.xml | 15962 | 2021-11-12 08:16:31 |
 ef_logoxtaglinelockupxcmyk.jpg | 29341 | 2021-11-12 08:16:31 |
| ex991efoi3q2021earningsrel.htm | 379480 | 2021-11-12 08:16:31 |
| FilingSummary.xml | 1693 | 2021-11-12 08:16:31 |
| Financial_Report.xlsx | 5761 | 2021-11-12 08:16:31 |
| MetaLinks.json | 18802 | 2021-11-12 08:16:31 |
| R1.htm | 42495 | 2021-11-12 08:16:31 |
| report.css | 2767 | 2021-11-12 08:16:31 |
| Show.js | 1085 | 2021-11-12 08:16:31 |