Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000924168-21-000021-index-headers.html | 2021-04-21 16:28:12 | |
| 0000924168-21-000021-index.html | 2021-04-21 16:28:12 | |
| 0000924168-21-000021.txt | 2021-04-21 16:28:12 | |
 0000924168-21-000021-xbrl.zip | 14336 | 2021-04-21 16:28:12 |
| a202104ex101firstamendment.htm | 12250 | 2021-04-21 16:28:12 |
| efoi-20210420.htm | 39382 | 2021-04-21 16:28:12 |
| efoi-20210420.xsd | 2441 | 2021-04-21 16:28:12 |
| efoi-20210420_cal.xml | 722 | 2021-04-21 16:28:12 |
| efoi-20210420_def.xml | 1655 | 2021-04-21 16:28:12 |
| efoi-20210420_htm.xml | 10779 | 2021-04-21 16:28:12 |
| efoi-20210420_lab.xml | 23970 | 2021-04-21 16:28:12 |
| efoi-20210420_pre.xml | 12658 | 2021-04-21 16:28:12 |
| FilingSummary.xml | 1731 | 2021-04-21 16:28:12 |
| Financial_Report.xlsx | 5668 | 2021-04-21 16:28:12 |
| MetaLinks.json | 17385 | 2021-04-21 16:28:12 |
| R1.htm | 38618 | 2021-04-21 16:28:12 |
| report.css | 2767 | 2021-04-21 16:28:12 |
| Show.js | 1085 | 2021-04-21 16:28:12 |