Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001185185-20-001054-index-headers.html | 2020-07-29 16:46:06 | |
| 0001185185-20-001054-index.html | 2020-07-29 16:46:06 | |
| 0001185185-20-001054.txt | 2020-07-29 16:46:06 | |
 0001185185-20-001054-xbrl.zip | 203238 | 2020-07-29 16:46:06 |
| ex_195152.htm | 27939 | 2020-07-29 16:46:06 |
| ex_195153.htm | 5085 | 2020-07-29 16:46:06 |
| ex_195154.htm | 3428 | 2020-07-29 16:46:06 |
| ex_195155.htm | 3476 | 2020-07-29 16:46:06 |
| ex_195156.htm | 7984 | 2020-07-29 16:46:06 |
| ex_195157.htm | 8095 | 2020-07-29 16:46:06 |
| ex_195158.htm | 8658 | 2020-07-29 16:46:06 |
| ex_195828.htm | 63768 | 2020-07-29 16:46:06 |
 ex_195828img001.gif | 1622 | 2020-07-29 16:46:06 |
| feim-20200430.xml | 1534177 | 2020-07-29 16:46:06 |
| feim-20200430.xsd | 68875 | 2020-07-29 16:46:06 |
| feim-20200430_cal.xml | 94404 | 2020-07-29 16:46:06 |
| feim-20200430_def.xml | 344736 | 2020-07-29 16:46:06 |
| feim-20200430_lab.xml | 603601 | 2020-07-29 16:46:06 |
| feim-20200430_pre.xml | 363292 | 2020-07-29 16:46:06 |
| FilingSummary.xml | 55611 | 2020-07-29 16:46:06 |
| Financial_Report.xlsx | 116476 | 2020-07-29 16:46:06 |
| freqelec20200430_10k.htm | 1299468 | 2020-07-29 16:46:06 |
| R1.htm | 35661 | 2020-07-29 16:46:06 |
| R10.htm | 13499 | 2020-07-29 16:46:06 |
| R11.htm | 14370 | 2020-07-29 16:46:06 |
| R12.htm | 13064 | 2020-07-29 16:46:06 |
| R13.htm | 16062 | 2020-07-29 16:46:06 |
| R14.htm | 39226 | 2020-07-29 16:46:06 |
| R15.htm | 71462 | 2020-07-29 16:46:06 |
| R16.htm | 5574 | 2020-07-29 16:46:06 |
| R17.htm | 17339 | 2020-07-29 16:46:06 |
| R18.htm | 10497 | 2020-07-29 16:46:06 |
| R19.htm | 55060 | 2020-07-29 16:46:06 |
| R2.htm | 114562 | 2020-07-29 16:46:06 |
| R20.htm | 108159 | 2020-07-29 16:46:06 |
| R21.htm | 69671 | 2020-07-29 16:46:06 |
| R22.htm | 13592 | 2020-07-29 16:46:06 |
| R23.htm | 56532 | 2020-07-29 16:46:06 |
| R24.htm | 10999 | 2020-07-29 16:46:06 |
| R25.htm | 5509 | 2020-07-29 16:46:06 |
| R26.htm | 128930 | 2020-07-29 16:46:06 |
| R27.htm | 55468 | 2020-07-29 16:46:06 |
| R28.htm | 16325 | 2020-07-29 16:46:06 |
| R29.htm | 12106 | 2020-07-29 16:46:06 |
| R3.htm | 21746 | 2020-07-29 16:46:06 |
| R30.htm | 11177 | 2020-07-29 16:46:06 |
| R31.htm | 13442 | 2020-07-29 16:46:06 |
| R32.htm | 14767 | 2020-07-29 16:46:06 |
| R33.htm | 41867 | 2020-07-29 16:46:06 |
| R34.htm | 70863 | 2020-07-29 16:46:06 |
| R35.htm | 16681 | 2020-07-29 16:46:06 |
| R36.htm | 41661 | 2020-07-29 16:46:06 |
| R37.htm | 109246 | 2020-07-29 16:46:06 |
| R38.htm | 70656 | 2020-07-29 16:46:06 |
| R39.htm | 13462 | 2020-07-29 16:46:06 |
| R4.htm | 74545 | 2020-07-29 16:46:06 |
| R40.htm | 56704 | 2020-07-29 16:46:06 |
| R41.htm | 24972 | 2020-07-29 16:46:06 |
| R42.htm | 30050 | 2020-07-29 16:46:06 |
| R43.htm | 14591 | 2020-07-29 16:46:06 |
| R44.htm | 16432 | 2020-07-29 16:46:06 |
| R45.htm | 19858 | 2020-07-29 16:46:06 |
| R46.htm | 35410 | 2020-07-29 16:46:06 |
| R47.htm | 7261 | 2020-07-29 16:46:06 |
| R48.htm | 9433 | 2020-07-29 16:46:06 |
| R49.htm | 11072 | 2020-07-29 16:46:06 |
| R5.htm | 7222 | 2020-07-29 16:46:06 |
| R50.htm | 9971 | 2020-07-29 16:46:06 |
| R51.htm | 10258 | 2020-07-29 16:46:06 |
| R52.htm | 10529 | 2020-07-29 16:46:06 |
| R53.htm | 6776 | 2020-07-29 16:46:06 |
| R54.htm | 15028 | 2020-07-29 16:46:06 |
| R55.htm | 13448 | 2020-07-29 16:46:06 |
| R56.htm | 11796 | 2020-07-29 16:46:06 |
| R57.htm | 16955 | 2020-07-29 16:46:06 |
| R58.htm | 27707 | 2020-07-29 16:46:06 |
| R59.htm | 10259 | 2020-07-29 16:46:06 |
| R6.htm | 97848 | 2020-07-29 16:46:06 |
| R60.htm | 17203 | 2020-07-29 16:46:06 |
| R61.htm | 8661 | 2020-07-29 16:46:06 |
| R62.htm | 15273 | 2020-07-29 16:46:06 |
| R63.htm | 4886 | 2020-07-29 16:46:06 |
| R64.htm | 20026 | 2020-07-29 16:46:06 |
| R65.htm | 16151 | 2020-07-29 16:46:06 |
| R66.htm | 84070 | 2020-07-29 16:46:06 |
| R67.htm | 40864 | 2020-07-29 16:46:06 |
| R68.htm | 23753 | 2020-07-29 16:46:06 |
| R69.htm | 12303 | 2020-07-29 16:46:06 |
| R7.htm | 47082 | 2020-07-29 16:46:06 |
| R70.htm | 27894 | 2020-07-29 16:46:06 |
| R71.htm | 32696 | 2020-07-29 16:46:06 |
| R72.htm | 38867 | 2020-07-29 16:46:06 |
| R73.htm | 13461 | 2020-07-29 16:46:06 |
| R74.htm | 17199 | 2020-07-29 16:46:06 |
| R75.htm | 13996 | 2020-07-29 16:46:06 |
| R76.htm | 11509 | 2020-07-29 16:46:06 |
| R77.htm | 16549 | 2020-07-29 16:46:06 |
| R78.htm | 6570 | 2020-07-29 16:46:06 |
| R79.htm | 11147 | 2020-07-29 16:46:06 |
| R8.htm | 80703 | 2020-07-29 16:46:06 |
| R80.htm | 28452 | 2020-07-29 16:46:06 |
| R81.htm | 4920 | 2020-07-29 16:46:06 |
| R82.htm | 9890 | 2020-07-29 16:46:06 |
| R83.htm | 59513 | 2020-07-29 16:46:06 |
| R84.htm | 4114 | 2020-07-29 16:46:06 |
| R9.htm | 17608 | 2020-07-29 16:46:06 |
| report.css | 2768 | 2020-07-29 16:46:06 |
| Show.js | 1086 | 2020-07-29 16:46:06 |