Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000924168-22-000022-index-headers.html | 2022-03-17 08:01:45 | |
| 0000924168-22-000022-index.html | 2022-03-17 08:01:45 | |
| 0000924168-22-000022.txt | 2022-03-17 08:01:45 | |
 0000924168-22-000022-xbrl.zip | 37398 | 2022-03-17 08:01:45 |
| efoi-20220317.htm | 37502 | 2022-03-17 08:01:45 |
| efoi-20220317.xsd | 2186 | 2022-03-17 08:01:45 |
| efoi-20220317_def.xml | 5356 | 2022-03-17 08:01:45 |
| efoi-20220317_htm.xml | 11437 | 2022-03-17 08:01:45 |
| efoi-20220317_lab.xml | 26969 | 2022-03-17 08:01:45 |
| efoi-20220317_pre.xml | 16514 | 2022-03-17 08:01:45 |
 ef_logoxtaglinexlockupxcmya.jpg | 90610 | 2022-03-17 08:01:45 |
| ex991efoi4q21earningsrelea.htm | 455859 | 2022-03-17 08:01:45 |
| FilingSummary.xml | 1707 | 2022-03-17 08:01:45 |
| Financial_Report.xlsx | 5752 | 2022-03-17 08:01:45 |
| MetaLinks.json | 18803 | 2022-03-17 08:01:45 |
| R1.htm | 41483 | 2022-03-17 08:01:45 |
| report.css | 2767 | 2022-03-17 08:01:45 |
| Show.js | 1085 | 2022-03-17 08:01:45 |