Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-20-046117-index-headers.html | 2020-10-08 16:08:06 | |
| 0001564590-20-046117-index.html | 2020-10-08 16:08:06 | |
| 0001564590-20-046117.txt | 2020-10-08 16:08:06 | |
 0001564590-20-046117-xbrl.zip | 13635 | 2020-10-08 16:08:06 |
| extr-20201008.xsd | 5804 | 2020-10-08 16:08:06 |
| extr-20201008_lab.xml | 18700 | 2020-10-08 16:08:06 |
| extr-20201008_pre.xml | 11194 | 2020-10-08 16:08:06 |
| extr-8k_20201008.htm | 40092 | 2020-10-08 16:08:06 |
| extr-8k_20201008_htm.xml | 3389 | 2020-10-08 16:08:06 |
| extr-ex991_6.htm | 27726 | 2020-10-08 16:08:06 |
| FilingSummary.xml | 1750 | 2020-10-08 16:08:06 |
| Financial_Report.xlsx | 5431 | 2020-10-08 16:08:06 |
| MetaLinks.json | 19359 | 2020-10-08 16:08:06 |
| R1.htm | 38585 | 2020-10-08 16:08:06 |
| report.css | 2767 | 2020-10-08 16:08:06 |
| Show.js | 1084 | 2020-10-08 16:08:06 |