Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000924168-21-000013-index-headers.html | 2021-03-25 08:03:40 | |
| 0000924168-21-000013-index.html | 2021-03-25 08:03:40 | |
| 0000924168-21-000013.txt | 2021-03-25 08:03:40 | |
 0000924168-21-000013-xbrl.zip | 36906 | 2021-03-25 08:03:40 |
| efoi-20210325.htm | 38360 | 2021-03-25 08:03:40 |
| efoi-20210325.xsd | 2441 | 2021-03-25 08:03:40 |
| efoi-20210325_cal.xml | 722 | 2021-03-25 08:03:40 |
| efoi-20210325_def.xml | 5639 | 2021-03-25 08:03:40 |
| efoi-20210325_htm.xml | 11117 | 2021-03-25 08:03:40 |
| efoi-20210325_lab.xml | 29025 | 2021-03-25 08:03:40 |
| efoi-20210325_pre.xml | 17612 | 2021-03-25 08:03:40 |
 ef_logoxtaglinexlockupxcmy.jpg | 90610 | 2021-03-25 08:03:40 |
| ex991efoi4q20earningsrelea.htm | 447235 | 2021-03-25 08:03:40 |
| FilingSummary.xml | 1731 | 2021-03-25 08:03:40 |
| Financial_Report.xlsx | 5801 | 2021-03-25 08:03:40 |
| MetaLinks.json | 20451 | 2021-03-25 08:03:40 |
| R1.htm | 44572 | 2021-03-25 08:03:40 |
| report.css | 2767 | 2021-03-25 08:03:40 |
| Show.js | 1085 | 2021-03-25 08:03:40 |