Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-21-005000-index-headers.html | 2021-02-09 16:16:24 | |
| 0001564590-21-005000-index.html | 2021-02-09 16:16:24 | |
| 0001564590-21-005000.txt | 2021-02-09 16:16:24 | |
 0001564590-21-005000-xbrl.zip | 41404 | 2021-02-09 16:16:24 |
| extr-20210209.xsd | 5804 | 2021-02-09 16:16:24 |
| extr-20210209_lab.xml | 18700 | 2021-02-09 16:16:24 |
| extr-20210209_pre.xml | 11194 | 2021-02-09 16:16:24 |
| extr-8k_20210209.htm | 33080 | 2021-02-09 16:16:24 |
| extr-8k_20210209_htm.xml | 3389 | 2021-02-09 16:16:24 |
| extr-ex991_6.htm | 1145942 | 2021-02-09 16:16:24 |
| FilingSummary.xml | 1750 | 2021-02-09 16:16:24 |
| Financial_Report.xlsx | 5430 | 2021-02-09 16:16:24 |
| MetaLinks.json | 19359 | 2021-02-09 16:16:24 |
| R1.htm | 38585 | 2021-02-09 16:16:24 |
| report.css | 2767 | 2021-02-09 16:16:24 |
| Show.js | 1084 | 2021-02-09 16:16:24 |