Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000924168-22-000040-index-headers.html | 2022-05-12 08:02:15 | |
| 0000924168-22-000040-index.html | 2022-05-12 08:02:15 | |
| 0000924168-22-000040.txt | 2022-05-12 08:02:15 | |
 0000924168-22-000040-xbrl.zip | 30691 | 2022-05-12 08:02:15 |
| efoi-20220512.htm | 37190 | 2022-05-12 08:02:15 |
| efoi-20220512.xsd | 2186 | 2022-05-12 08:02:15 |
| efoi-20220512_def.xml | 4395 | 2022-05-12 08:02:15 |
| efoi-20220512_htm.xml | 11395 | 2022-05-12 08:02:15 |
| efoi-20220512_lab.xml | 26969 | 2022-05-12 08:02:15 |
| efoi-20220512_pre.xml | 15962 | 2022-05-12 08:02:15 |
 ef_logoxtaglinelockupxcmyk.jpg | 29341 | 2022-05-12 08:02:15 |
| ex991efoi1q2022earningsrel.htm | 295884 | 2022-05-12 08:02:15 |
| FilingSummary.xml | 1704 | 2022-05-12 08:02:15 |
| Financial_Report.xlsx | 5736 | 2022-05-12 08:02:15 |
| MetaLinks.json | 18802 | 2022-05-12 08:02:15 |
| R1.htm | 41346 | 2022-05-12 08:02:15 |
| report.css | 2767 | 2022-05-12 08:02:15 |
| Show.js | 1085 | 2022-05-12 08:02:15 |