Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-22-002568-index-headers.html | 2022-01-27 07:16:52 | |
| 0001564590-22-002568-index.html | 2022-01-27 07:16:52 | |
| 0001564590-22-002568.txt | 2022-01-27 07:16:52 | |
 0001564590-22-002568-xbrl.zip | 45131 | 2022-01-27 07:16:52 |
| extr-20220127.xsd | 5804 | 2022-01-27 07:16:52 |
| extr-20220127_lab.xml | 18700 | 2022-01-27 07:16:52 |
| extr-20220127_pre.xml | 11194 | 2022-01-27 07:16:52 |
| extr-8k_20220127.htm | 33239 | 2022-01-27 07:16:52 |
| extr-8k_20220127_htm.xml | 3408 | 2022-01-27 07:16:52 |
| extr-ex991_6.htm | 1142865 | 2022-01-27 07:16:52 |
| FilingSummary.xml | 1751 | 2022-01-27 07:16:52 |
| Financial_Report.xlsx | 5663 | 2022-01-27 07:16:52 |
 gucvyrm3ussa000001.jpg | 28052 | 2022-01-27 07:16:52 |
| MetaLinks.json | 19159 | 2022-01-27 07:16:52 |
| R1.htm | 38603 | 2022-01-27 07:16:52 |
| report.css | 2767 | 2022-01-27 07:16:52 |
| Show.js | 1085 | 2022-01-27 07:16:52 |