Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-23-058245-index-headers.html | 2023-11-02 16:20:25 | |
| 0000950170-23-058245-index.html | 2023-11-02 16:20:25 | |
| 0000950170-23-058245.txt | 2023-11-02 16:20:25 | |
 0000950170-23-058245-xbrl.zip | 277455 | 2023-11-02 16:20:25 |
| extr-20230930.htm | 2327874 | 2023-11-02 16:20:25 |
| extr-20230930.xsd | 71740 | 2023-11-02 16:20:25 |
| extr-20230930_cal.xml | 65000 | 2023-11-02 16:20:25 |
| extr-20230930_def.xml | 248594 | 2023-11-02 16:20:25 |
| extr-20230930_htm.xml | 2132863 | 2023-11-02 16:20:25 |
| extr-20230930_lab.xml | 603713 | 2023-11-02 16:20:25 |
| extr-20230930_pre.xml | 441782 | 2023-11-02 16:20:25 |
| extr-ex10_1.htm | 137809 | 2023-11-02 16:20:25 |
| extr-ex10_2.htm | 173305 | 2023-11-02 16:20:25 |
| extr-ex31_1.htm | 16458 | 2023-11-02 16:20:25 |
| extr-ex31_2.htm | 16567 | 2023-11-02 16:20:25 |
| extr-ex32_1.htm | 8240 | 2023-11-02 16:20:25 |
| extr-ex32_2.htm | 8395 | 2023-11-02 16:20:25 |
| FilingSummary.xml | 48248 | 2023-11-02 16:20:25 |
| Financial_Report.xlsx | 105283 | 2023-11-02 16:20:25 |
| MetaLinks.json | 985742 | 2023-11-02 16:20:25 |
| R1.htm | 51552 | 2023-11-02 16:20:25 |
| R10.htm | 12431 | 2023-11-02 16:20:25 |
| R11.htm | 6588 | 2023-11-02 16:20:25 |
| R12.htm | 120071 | 2023-11-02 16:20:25 |
| R13.htm | 88682 | 2023-11-02 16:20:25 |
| R14.htm | 104696 | 2023-11-02 16:20:25 |
| R15.htm | 144896 | 2023-11-02 16:20:25 |
| R16.htm | 64009 | 2023-11-02 16:20:25 |
| R17.htm | 20927 | 2023-11-02 16:20:25 |
| R18.htm | 20468 | 2023-11-02 16:20:25 |
| R19.htm | 187748 | 2023-11-02 16:20:25 |
| R2.htm | 107076 | 2023-11-02 16:20:25 |
| R20.htm | 28861 | 2023-11-02 16:20:25 |
| R21.htm | 18670 | 2023-11-02 16:20:25 |
| R22.htm | 12821 | 2023-11-02 16:20:25 |
| R23.htm | 16974 | 2023-11-02 16:20:25 |
| R24.htm | 58473 | 2023-11-02 16:20:25 |
| R25.htm | 6047 | 2023-11-02 16:20:25 |
| R26.htm | 202614 | 2023-11-02 16:20:25 |
| R27.htm | 97645 | 2023-11-02 16:20:25 |
| R28.htm | 84673 | 2023-11-02 16:20:25 |
| R29.htm | 86033 | 2023-11-02 16:20:25 |
| R3.htm | 27657 | 2023-11-02 16:20:25 |
| R30.htm | 151438 | 2023-11-02 16:20:25 |
| R31.htm | 44453 | 2023-11-02 16:20:25 |
| R32.htm | 169756 | 2023-11-02 16:20:25 |
| R33.htm | 22356 | 2023-11-02 16:20:25 |
| R34.htm | 58726 | 2023-11-02 16:20:25 |
| R35.htm | 35399 | 2023-11-02 16:20:25 |
| R36.htm | 15547 | 2023-11-02 16:20:25 |
| R37.htm | 34065 | 2023-11-02 16:20:25 |
| R38.htm | 19171 | 2023-11-02 16:20:25 |
| R39.htm | 6549 | 2023-11-02 16:20:25 |
| R4.htm | 92556 | 2023-11-02 16:20:25 |
| R40.htm | 11488 | 2023-11-02 16:20:25 |
| R41.htm | 9548 | 2023-11-02 16:20:25 |
| R42.htm | 19275 | 2023-11-02 16:20:25 |
| R43.htm | 7336 | 2023-11-02 16:20:25 |
| R44.htm | 9898 | 2023-11-02 16:20:25 |
| R45.htm | 17558 | 2023-11-02 16:20:25 |
| R46.htm | 41463 | 2023-11-02 16:20:25 |
| R47.htm | 23189 | 2023-11-02 16:20:25 |
| R48.htm | 11468 | 2023-11-02 16:20:25 |
| R49.htm | 16980 | 2023-11-02 16:20:25 |
| R5.htm | 34534 | 2023-11-02 16:20:25 |
| R50.htm | 6065 | 2023-11-02 16:20:25 |
| R51.htm | 19256 | 2023-11-02 16:20:25 |
| R52.htm | 56091 | 2023-11-02 16:20:25 |
| R53.htm | 6205 | 2023-11-02 16:20:25 |
| R54.htm | 40363 | 2023-11-02 16:20:25 |
| R55.htm | 15940 | 2023-11-02 16:20:25 |
| R56.htm | 15538 | 2023-11-02 16:20:25 |
| R57.htm | 37016 | 2023-11-02 16:20:25 |
| R58.htm | 69688 | 2023-11-02 16:20:25 |
| R59.htm | 32935 | 2023-11-02 16:20:25 |
| R6.htm | 47855 | 2023-11-02 16:20:25 |
| R60.htm | 27221 | 2023-11-02 16:20:25 |
| R61.htm | 12649 | 2023-11-02 16:20:25 |
| R62.htm | 6435 | 2023-11-02 16:20:25 |
| R63.htm | 10767 | 2023-11-02 16:20:25 |
| R64.htm | 26324 | 2023-11-02 16:20:25 |
| R65.htm | 20650 | 2023-11-02 16:20:25 |
| R66.htm | 12266 | 2023-11-02 16:20:25 |
| R67.htm | 42630 | 2023-11-02 16:20:25 |
| R68.htm | 10068 | 2023-11-02 16:20:25 |
| R7.htm | 81862 | 2023-11-02 16:20:25 |
| R8.htm | 15078 | 2023-11-02 16:20:25 |
| R9.htm | 25513 | 2023-11-02 16:20:25 |
| report.css | 2767 | 2023-11-02 16:20:25 |
| Show.js | 1085 | 2023-11-02 16:20:25 |