Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000924168-21-000055-index-headers.html | 2021-12-15 17:00:42 | |
| 0000924168-21-000055-index.html | 2021-12-15 17:00:42 | |
| 0000924168-21-000055.txt | 2021-12-15 17:00:42 | |
 0000924168-21-000055-xbrl.zip | 100336 | 2021-12-15 17:00:42 |
| a2021128-kex41formofwarrant.htm | 119973 | 2021-12-15 17:00:42 |
| a202112ex101securitiespurc.htm | 285465 | 2021-12-15 17:00:42 |
| a202112ex102registrationri.htm | 152805 | 2021-12-15 17:00:42 |
| a202112ex991pressrelease.htm | 19277 | 2021-12-15 17:00:42 |
| efoi-20211213.htm | 54178 | 2021-12-15 17:00:42 |
| efoi-20211213.xsd | 1920 | 2021-12-15 17:00:42 |
| efoi-20211213_htm.xml | 10834 | 2021-12-15 17:00:42 |
| efoi-20211213_lab.xml | 23832 | 2021-12-15 17:00:42 |
| efoi-20211213_pre.xml | 12520 | 2021-12-15 17:00:42 |
 ef_logoxtaglinelockupxcmyk.jpg | 29341 | 2021-12-15 17:00:42 |
| FilingSummary.xml | 1791 | 2021-12-15 17:00:42 |
| Financial_Report.xlsx | 5669 | 2021-12-15 17:00:42 |
| MetaLinks.json | 16644 | 2021-12-15 17:00:42 |
| R1.htm | 38581 | 2021-12-15 17:00:42 |
| report.css | 2767 | 2021-12-15 17:00:42 |
| Show.js | 1085 | 2021-12-15 17:00:42 |