Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-21-038470-index-headers.html | 2021-07-28 07:27:09 | |
| 0001564590-21-038470-index.html | 2021-07-28 07:27:09 | |
| 0001564590-21-038470.txt | 2021-07-28 07:27:09 | |
 0001564590-21-038470-xbrl.zip | 45823 | 2021-07-28 07:27:09 |
| extr-20210728.xsd | 5804 | 2021-07-28 07:27:09 |
| extr-20210728_lab.xml | 18700 | 2021-07-28 07:27:09 |
| extr-20210728_pre.xml | 11194 | 2021-07-28 07:27:09 |
| extr-8k_20210728.htm | 33185 | 2021-07-28 07:27:09 |
| extr-8k_20210728_htm.xml | 3389 | 2021-07-28 07:27:09 |
| extr-ex991_6.htm | 1248416 | 2021-07-28 07:27:09 |
| FilingSummary.xml | 1750 | 2021-07-28 07:27:09 |
| Financial_Report.xlsx | 5651 | 2021-07-28 07:27:09 |
 gaqct34nw31a000001.jpg | 28052 | 2021-07-28 07:27:09 |
| MetaLinks.json | 19359 | 2021-07-28 07:27:09 |
| R1.htm | 38584 | 2021-07-28 07:27:09 |
| report.css | 2767 | 2021-07-28 07:27:09 |
| Show.js | 1085 | 2021-07-28 07:27:09 |