Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000924168-21-000028-index-headers.html | 2021-05-13 08:38:04 | |
| 0000924168-21-000028-index.html | 2021-05-13 08:38:04 | |
| 0000924168-21-000028.txt | 2021-05-13 08:38:04 | |
 0000924168-21-000028-xbrl.zip | 33572 | 2021-05-13 08:38:04 |
| efoi-20210513.htm | 39534 | 2021-05-13 08:38:04 |
| efoi-20210513.xsd | 2441 | 2021-05-13 08:38:04 |
| efoi-20210513_cal.xml | 722 | 2021-05-13 08:38:04 |
| efoi-20210513_def.xml | 4395 | 2021-05-13 08:38:04 |
| efoi-20210513_htm.xml | 11654 | 2021-05-13 08:38:04 |
| efoi-20210513_lab.xml | 26969 | 2021-05-13 08:38:04 |
| efoi-20210513_pre.xml | 15962 | 2021-05-13 08:38:04 |
 ef_logoxtaglinelockupxcmyka.jpg | 29341 | 2021-05-13 08:38:04 |
| ex991efoi1q2021earningsrel.htm | 351396 | 2021-05-13 08:38:04 |
| FilingSummary.xml | 1731 | 2021-05-13 08:38:04 |
| Financial_Report.xlsx | 5758 | 2021-05-13 08:38:04 |
| MetaLinks.json | 19141 | 2021-05-13 08:38:04 |
| R1.htm | 42493 | 2021-05-13 08:38:04 |
| report.css | 2767 | 2021-05-13 08:38:04 |
| Show.js | 1085 | 2021-05-13 08:38:04 |