Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-21-054934-index-headers.html | 2021-11-05 17:00:18 | |
| 0001564590-21-054934-index.html | 2021-11-05 17:00:18 | |
| 0001564590-21-054934.txt | 2021-11-05 17:00:18 | |
 0001564590-21-054934-xbrl.zip | 10946 | 2021-11-05 17:00:18 |
| extr-20211104.xsd | 5713 | 2021-11-05 17:00:18 |
| extr-20211104_lab.xml | 18565 | 2021-11-05 17:00:18 |
| extr-20211104_pre.xml | 11058 | 2021-11-05 17:00:18 |
| extr-8k_20211104.htm | 135576 | 2021-11-05 17:00:18 |
| extr-8k_20211104_htm.xml | 3402 | 2021-11-05 17:00:18 |
| FilingSummary.xml | 1710 | 2021-11-05 17:00:18 |
| Financial_Report.xlsx | 5664 | 2021-11-05 17:00:18 |
| MetaLinks.json | 18672 | 2021-11-05 17:00:18 |
| R1.htm | 38565 | 2021-11-05 17:00:18 |
| report.css | 2766 | 2021-11-05 17:00:18 |
| Show.js | 1084 | 2021-11-05 17:00:18 |