Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000924168-21-000045-index-headers.html | 2021-08-12 08:21:13 | |
| 0000924168-21-000045-index.html | 2021-08-12 08:21:13 | |
| 0000924168-21-000045.txt | 2021-08-12 08:21:13 | |
 0000924168-21-000045-xbrl.zip | 33271 | 2021-08-12 08:21:13 |
| efoi-20210812.htm | 37851 | 2021-08-12 08:21:13 |
| efoi-20210812.xsd | 2186 | 2021-08-12 08:21:13 |
| efoi-20210812_def.xml | 4395 | 2021-08-12 08:21:13 |
| efoi-20210812_htm.xml | 11659 | 2021-08-12 08:21:13 |
| efoi-20210812_lab.xml | 26969 | 2021-08-12 08:21:13 |
| efoi-20210812_pre.xml | 15962 | 2021-08-12 08:21:13 |
 ef_logoxtaglinelockupxcmyk.jpg | 29341 | 2021-08-12 08:21:13 |
| ex991efoi2q2021earningsrel.htm | 362522 | 2021-08-12 08:21:13 |
| FilingSummary.xml | 1693 | 2021-08-12 08:21:13 |
| Financial_Report.xlsx | 5761 | 2021-08-12 08:21:13 |
| MetaLinks.json | 19056 | 2021-08-12 08:21:13 |
| R1.htm | 42495 | 2021-08-12 08:21:13 |
| report.css | 2767 | 2021-08-12 08:21:13 |
| Show.js | 1085 | 2021-08-12 08:21:13 |