Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-22-035673-index-headers.html | 2022-10-28 16:10:52 | |
| 0001564590-22-035673-index.html | 2022-10-28 16:10:52 | |
| 0001564590-22-035673.txt | 2022-10-28 16:10:52 | |
 0001564590-22-035673-xbrl.zip | 199971 | 2022-10-28 16:10:52 |
| extr-10q_20220930.htm | 2319689 | 2022-10-28 16:10:52 |
| extr-10q_20220930_htm.xml | 2109176 | 2022-10-28 16:10:52 |
| extr-20220930.xsd | 65628 | 2022-10-28 16:10:52 |
| extr-20220930_cal.xml | 61570 | 2022-10-28 16:10:52 |
| extr-20220930_def.xml | 220100 | 2022-10-28 16:10:52 |
| extr-20220930_lab.xml | 545798 | 2022-10-28 16:10:52 |
| extr-20220930_pre.xml | 412151 | 2022-10-28 16:10:52 |
| extr-ex311_8.htm | 19075 | 2022-10-28 16:10:52 |
| extr-ex312_9.htm | 19292 | 2022-10-28 16:10:52 |
| extr-ex321_7.htm | 7284 | 2022-10-28 16:10:52 |
| extr-ex322_6.htm | 7269 | 2022-10-28 16:10:52 |
| FilingSummary.xml | 48025 | 2022-10-28 16:10:52 |
| Financial_Report.xlsx | 102729 | 2022-10-28 16:10:52 |
| MetaLinks.json | 759523 | 2022-10-28 16:10:52 |
| R1.htm | 51557 | 2022-10-28 16:10:52 |
| R10.htm | 122038 | 2022-10-28 16:10:52 |
| R11.htm | 23461 | 2022-10-28 16:10:52 |
| R12.htm | 80172 | 2022-10-28 16:10:52 |
| R13.htm | 100025 | 2022-10-28 16:10:52 |
| R14.htm | 143422 | 2022-10-28 16:10:52 |
| R15.htm | 61455 | 2022-10-28 16:10:52 |
| R16.htm | 20031 | 2022-10-28 16:10:52 |
| R17.htm | 14750 | 2022-10-28 16:10:52 |
| R18.htm | 182246 | 2022-10-28 16:10:52 |
| R19.htm | 29557 | 2022-10-28 16:10:52 |
| R2.htm | 106974 | 2022-10-28 16:10:52 |
| R20.htm | 15552 | 2022-10-28 16:10:52 |
| R21.htm | 9141 | 2022-10-28 16:10:52 |
| R22.htm | 17294 | 2022-10-28 16:10:52 |
| R23.htm | 66329 | 2022-10-28 16:10:52 |
| R24.htm | 188882 | 2022-10-28 16:10:52 |
| R25.htm | 112005 | 2022-10-28 16:10:52 |
| R26.htm | 18109 | 2022-10-28 16:10:52 |
| R27.htm | 78437 | 2022-10-28 16:10:52 |
| R28.htm | 87072 | 2022-10-28 16:10:52 |
| R29.htm | 145930 | 2022-10-28 16:10:52 |
| R3.htm | 26527 | 2022-10-28 16:10:52 |
| R30.htm | 44867 | 2022-10-28 16:10:52 |
| R31.htm | 181730 | 2022-10-28 16:10:52 |
| R32.htm | 23188 | 2022-10-28 16:10:52 |
| R33.htm | 66801 | 2022-10-28 16:10:52 |
| R34.htm | 37754 | 2022-10-28 16:10:52 |
| R35.htm | 15611 | 2022-10-28 16:10:52 |
| R36.htm | 32090 | 2022-10-28 16:10:52 |
| R37.htm | 19021 | 2022-10-28 16:10:52 |
| R38.htm | 16119 | 2022-10-28 16:10:52 |
| R39.htm | 15090 | 2022-10-28 16:10:52 |
| R4.htm | 92797 | 2022-10-28 16:10:52 |
| R40.htm | 9665 | 2022-10-28 16:10:52 |
| R41.htm | 18811 | 2022-10-28 16:10:52 |
| R42.htm | 7337 | 2022-10-28 16:10:52 |
| R43.htm | 11958 | 2022-10-28 16:10:52 |
| R44.htm | 17780 | 2022-10-28 16:10:52 |
| R45.htm | 44250 | 2022-10-28 16:10:52 |
| R46.htm | 23608 | 2022-10-28 16:10:52 |
| R47.htm | 11575 | 2022-10-28 16:10:52 |
| R48.htm | 17075 | 2022-10-28 16:10:52 |
| R49.htm | 17179 | 2022-10-28 16:10:52 |
| R5.htm | 36381 | 2022-10-28 16:10:52 |
| R50.htm | 60395 | 2022-10-28 16:10:52 |
| R51.htm | 6618 | 2022-10-28 16:10:52 |
| R52.htm | 20726 | 2022-10-28 16:10:52 |
| R53.htm | 10901 | 2022-10-28 16:10:52 |
| R54.htm | 15556 | 2022-10-28 16:10:52 |
| R55.htm | 37252 | 2022-10-28 16:10:52 |
| R56.htm | 43842 | 2022-10-28 16:10:52 |
| R57.htm | 33061 | 2022-10-28 16:10:52 |
| R58.htm | 19330 | 2022-10-28 16:10:52 |
| R59.htm | 12711 | 2022-10-28 16:10:52 |
| R6.htm | 48720 | 2022-10-28 16:10:52 |
| R60.htm | 6452 | 2022-10-28 16:10:52 |
| R61.htm | 10565 | 2022-10-28 16:10:52 |
| R62.htm | 25420 | 2022-10-28 16:10:52 |
| R63.htm | 14164 | 2022-10-28 16:10:52 |
| R64.htm | 12461 | 2022-10-28 16:10:52 |
| R65.htm | 42908 | 2022-10-28 16:10:52 |
| R66.htm | 10087 | 2022-10-28 16:10:52 |
| R7.htm | 81652 | 2022-10-28 16:10:52 |
| R8.htm | 10876 | 2022-10-28 16:10:52 |
| R9.htm | 6786 | 2022-10-28 16:10:52 |
| report.css | 2767 | 2022-10-28 16:10:52 |
| Show.js | 1085 | 2022-10-28 16:10:52 |