Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-24-009819-index-headers.html | 2024-02-01 16:18:36 | |
| 0000950170-24-009819-index.html | 2024-02-01 16:18:36 | |
| 0000950170-24-009819.txt | 2024-02-01 16:18:36 | |
 0000950170-24-009819-xbrl.zip | 266332 | 2024-02-01 16:18:36 |
| extr-20231231.htm | 2317076 | 2024-02-01 16:18:36 |
| extr-20231231.xsd | 1470296 | 2024-02-01 16:18:36 |
| extr-20231231_htm.xml | 2169973 | 2024-02-01 16:18:36 |
| extr-ex10_1.htm | 56019 | 2024-02-01 16:18:36 |
| extr-ex31_1.htm | 13778 | 2024-02-01 16:18:36 |
| extr-ex31_2.htm | 13873 | 2024-02-01 16:18:36 |
| extr-ex32_1.htm | 6949 | 2024-02-01 16:18:36 |
| extr-ex32_2.htm | 7094 | 2024-02-01 16:18:36 |
| FilingSummary.xml | 47587 | 2024-02-01 16:18:36 |
| Financial_Report.xlsx | 111608 | 2024-02-01 16:18:36 |
| MetaLinks.json | 992688 | 2024-02-01 16:18:36 |
| R1.htm | 51553 | 2024-02-01 16:18:36 |
| R10.htm | 12059 | 2024-02-01 16:18:36 |
| R11.htm | 9245 | 2024-02-01 16:18:36 |
| R12.htm | 150040 | 2024-02-01 16:18:36 |
| R13.htm | 80652 | 2024-02-01 16:18:36 |
| R14.htm | 67108 | 2024-02-01 16:18:36 |
| R15.htm | 112157 | 2024-02-01 16:18:36 |
| R16.htm | 51181 | 2024-02-01 16:18:36 |
| R17.htm | 20759 | 2024-02-01 16:18:36 |
| R18.htm | 20302 | 2024-02-01 16:18:36 |
| R19.htm | 152670 | 2024-02-01 16:18:36 |
| R2.htm | 107077 | 2024-02-01 16:18:36 |
| R20.htm | 23506 | 2024-02-01 16:18:36 |
| R21.htm | 20055 | 2024-02-01 16:18:36 |
| R22.htm | 15223 | 2024-02-01 16:18:36 |
| R23.htm | 17483 | 2024-02-01 16:18:36 |
| R24.htm | 77120 | 2024-02-01 16:18:36 |
| R25.htm | 224759 | 2024-02-01 16:18:36 |
| R26.htm | 127665 | 2024-02-01 16:18:36 |
| R27.htm | 77360 | 2024-02-01 16:18:36 |
| R28.htm | 49756 | 2024-02-01 16:18:36 |
| R29.htm | 119096 | 2024-02-01 16:18:36 |
| R3.htm | 27659 | 2024-02-01 16:18:36 |
| R30.htm | 32494 | 2024-02-01 16:18:36 |
| R31.htm | 138649 | 2024-02-01 16:18:36 |
| R32.htm | 17312 | 2024-02-01 16:18:36 |
| R33.htm | 77499 | 2024-02-01 16:18:36 |
| R34.htm | 39501 | 2024-02-01 16:18:36 |
| R35.htm | 15549 | 2024-02-01 16:18:36 |
| R36.htm | 38787 | 2024-02-01 16:18:36 |
| R37.htm | 24641 | 2024-02-01 16:18:36 |
| R38.htm | 6551 | 2024-02-01 16:18:36 |
| R39.htm | 11490 | 2024-02-01 16:18:36 |
| R4.htm | 96171 | 2024-02-01 16:18:36 |
| R40.htm | 9552 | 2024-02-01 16:18:36 |
| R41.htm | 19277 | 2024-02-01 16:18:36 |
| R42.htm | 7338 | 2024-02-01 16:18:36 |
| R43.htm | 10473 | 2024-02-01 16:18:36 |
| R44.htm | 11432 | 2024-02-01 16:18:36 |
| R45.htm | 41643 | 2024-02-01 16:18:36 |
| R46.htm | 23190 | 2024-02-01 16:18:36 |
| R47.htm | 12043 | 2024-02-01 16:18:36 |
| R48.htm | 16982 | 2024-02-01 16:18:36 |
| R49.htm | 6067 | 2024-02-01 16:18:36 |
| R5.htm | 37408 | 2024-02-01 16:18:36 |
| R50.htm | 19258 | 2024-02-01 16:18:36 |
| R51.htm | 60630 | 2024-02-01 16:18:36 |
| R52.htm | 6207 | 2024-02-01 16:18:36 |
| R53.htm | 42350 | 2024-02-01 16:18:36 |
| R54.htm | 15943 | 2024-02-01 16:18:36 |
| R55.htm | 17137 | 2024-02-01 16:18:36 |
| R56.htm | 42187 | 2024-02-01 16:18:36 |
| R57.htm | 69699 | 2024-02-01 16:18:36 |
| R58.htm | 32922 | 2024-02-01 16:18:36 |
| R59.htm | 27223 | 2024-02-01 16:18:36 |
| R6.htm | 60362 | 2024-02-01 16:18:36 |
| R60.htm | 12651 | 2024-02-01 16:18:36 |
| R61.htm | 6437 | 2024-02-01 16:18:36 |
| R62.htm | 10769 | 2024-02-01 16:18:36 |
| R63.htm | 25963 | 2024-02-01 16:18:36 |
| R64.htm | 29532 | 2024-02-01 16:18:36 |
| R65.htm | 15541 | 2024-02-01 16:18:36 |
| R66.htm | 46494 | 2024-02-01 16:18:36 |
| R67.htm | 10879 | 2024-02-01 16:18:36 |
| R7.htm | 81875 | 2024-02-01 16:18:36 |
| R8.htm | 15392 | 2024-02-01 16:18:36 |
| R9.htm | 24750 | 2024-02-01 16:18:36 |
| report.css | 2767 | 2024-02-01 16:18:36 |
| Show.js | 1085 | 2024-02-01 16:18:36 |