Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000924168-20-000013-index-headers.html | 2020-03-24 17:19:57 | |
| 0000924168-20-000013-index.html | 2020-03-24 17:19:57 | |
| 0000924168-20-000013.txt | 2020-03-24 17:19:57 | |
 0000924168-20-000013-xbrl.zip | 258802 | 2020-03-24 17:19:57 |
| a2019123110kdocument.htm | 1956477 | 2020-03-24 17:19:57 |
| efoi-20191231.xml | 1635641 | 2020-03-24 17:19:57 |
| efoi-20191231.xsd | 62637 | 2020-03-24 17:19:57 |
| efoi-20191231_cal.xml | 123624 | 2020-03-24 17:19:57 |
| efoi-20191231_def.xml | 273991 | 2020-03-24 17:19:57 |
| efoi-20191231_lab.xml | 892733 | 2020-03-24 17:19:57 |
| efoi-20191231_pre.xml | 511094 | 2020-03-24 17:19:57 |
| ex211-10xk123119.htm | 2364 | 2020-03-24 17:19:57 |
| ex231-10xk123119.htm | 3312 | 2020-03-24 17:19:57 |
| ex232-10xk123119.htm | 3207 | 2020-03-24 17:19:57 |
| ex310-10xk123119.htm | 6275 | 2020-03-24 17:19:57 |
| ex311-10xk123119.htm | 14349 | 2020-03-24 17:19:57 |
| ex312-10xk123119.htm | 14654 | 2020-03-24 17:19:57 |
| ex32-10xk123119.htm | 6708 | 2020-03-24 17:19:57 |
| ex321-10xk123119.htm | 8692 | 2020-03-24 17:19:57 |
| ex33-10xk123119.htm | 6804 | 2020-03-24 17:19:57 |
| ex34-10xk123119.htm | 9112 | 2020-03-24 17:19:57 |
| ex37-10xk123119.htm | 6250 | 2020-03-24 17:19:57 |
| ex41-10xk123119.htm | 18470 | 2020-03-24 17:19:57 |
| FilingSummary.xml | 41489 | 2020-03-24 17:19:57 |
| Financial_Report.xlsx | 103905 | 2020-03-24 17:19:57 |
| R1.htm | 33861 | 2020-03-24 17:19:57 |
| R10.htm | 39554 | 2020-03-24 17:19:57 |
| R11.htm | 132856 | 2020-03-24 17:19:57 |
| R12.htm | 15668 | 2020-03-24 17:19:57 |
| R13.htm | 28425 | 2020-03-24 17:19:57 |
| R14.htm | 17471 | 2020-03-24 17:19:57 |
| R15.htm | 19965 | 2020-03-24 17:19:57 |
| R16.htm | 25823 | 2020-03-24 17:19:57 |
| R17.htm | 5854 | 2020-03-24 17:19:57 |
| R18.htm | 138560 | 2020-03-24 17:19:57 |
| R19.htm | 66913 | 2020-03-24 17:19:57 |
| R2.htm | 100739 | 2020-03-24 17:19:57 |
| R20.htm | 31253 | 2020-03-24 17:19:57 |
| R21.htm | 10576 | 2020-03-24 17:19:57 |
| R22.htm | 6005 | 2020-03-24 17:19:57 |
| R23.htm | 10408 | 2020-03-24 17:19:57 |
| R24.htm | 48715 | 2020-03-24 17:19:57 |
| R25.htm | 47252 | 2020-03-24 17:19:57 |
| R26.htm | 85895 | 2020-03-24 17:19:57 |
| R27.htm | 32013 | 2020-03-24 17:19:57 |
| R28.htm | 18730 | 2020-03-24 17:19:57 |
| R29.htm | 92469 | 2020-03-24 17:19:57 |
| R3.htm | 21543 | 2020-03-24 17:19:57 |
| R30.htm | 15315 | 2020-03-24 17:19:57 |
| R31.htm | 25103 | 2020-03-24 17:19:57 |
| R32.htm | 17303 | 2020-03-24 17:19:57 |
| R33.htm | 19512 | 2020-03-24 17:19:57 |
| R34.htm | 132112 | 2020-03-24 17:19:57 |
| R35.htm | 62573 | 2020-03-24 17:19:57 |
| R36.htm | 31216 | 2020-03-24 17:19:57 |
| R37.htm | 47321 | 2020-03-24 17:19:57 |
| R38.htm | 36993 | 2020-03-24 17:19:57 |
| R39.htm | 86723 | 2020-03-24 17:19:57 |
| R4.htm | 48212 | 2020-03-24 17:19:57 |
| R40.htm | 12117 | 2020-03-24 17:19:57 |
| R41.htm | 11180 | 2020-03-24 17:19:57 |
| R42.htm | 47915 | 2020-03-24 17:19:57 |
| R43.htm | 22285 | 2020-03-24 17:19:57 |
| R44.htm | 21252 | 2020-03-24 17:19:57 |
| R45.htm | 17446 | 2020-03-24 17:19:57 |
| R46.htm | 19627 | 2020-03-24 17:19:57 |
| R47.htm | 69039 | 2020-03-24 17:19:57 |
| R48.htm | 8345 | 2020-03-24 17:19:57 |
| R49.htm | 13269 | 2020-03-24 17:19:57 |
| R5.htm | 13540 | 2020-03-24 17:19:57 |
| R50.htm | 52095 | 2020-03-24 17:19:57 |
| R51.htm | 17236 | 2020-03-24 17:19:57 |
| R52.htm | 22374 | 2020-03-24 17:19:57 |
| R53.htm | 120946 | 2020-03-24 17:19:57 |
| R54.htm | 8180 | 2020-03-24 17:19:57 |
| R55.htm | 74435 | 2020-03-24 17:19:57 |
| R56.htm | 12525 | 2020-03-24 17:19:57 |
| R57.htm | 16299 | 2020-03-24 17:19:57 |
| R58.htm | 37189 | 2020-03-24 17:19:57 |
| R59.htm | 46199 | 2020-03-24 17:19:57 |
| R6.htm | 41348 | 2020-03-24 17:19:57 |
| R60.htm | 26377 | 2020-03-24 17:19:57 |
| R61.htm | 32673 | 2020-03-24 17:19:57 |
| R62.htm | 11952 | 2020-03-24 17:19:57 |
| R63.htm | 19012 | 2020-03-24 17:19:57 |
| R64.htm | 18582 | 2020-03-24 17:19:57 |
| R65.htm | 22103 | 2020-03-24 17:19:57 |
| R66.htm | 24779 | 2020-03-24 17:19:57 |
| R67.htm | 32118 | 2020-03-24 17:19:57 |
| R68.htm | 16097 | 2020-03-24 17:19:57 |
| R69.htm | 17562 | 2020-03-24 17:19:57 |
| R7.htm | 106697 | 2020-03-24 17:19:57 |
| R8.htm | 15881 | 2020-03-24 17:19:57 |
| R9.htm | 78177 | 2020-03-24 17:19:57 |
| R9999.htm | 4622 | 2020-03-24 17:19:57 |
| report.css | 2767 | 2020-03-24 17:19:57 |
| Show.js | 1085 | 2020-03-24 17:19:57 |