Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-19-037908-index-headers.html | 2019-10-25 16:00:46 | |
| 0001564590-19-037908-index.html | 2019-10-25 16:00:46 | |
| 0001564590-19-037908.txt | 2019-10-25 16:00:46 | |
 0001564590-19-037908-xbrl.zip | 31774 | 2019-10-25 16:00:46 |
| extr-20190809.xsd | 5996 | 2019-10-25 16:00:46 |
| extr-20190809_lab.xml | 19430 | 2019-10-25 16:00:46 |
| extr-20190809_pre.xml | 11636 | 2019-10-25 16:00:46 |
| extr-8ka_20190809.htm | 44539 | 2019-10-25 16:00:46 |
| extr-8ka_20190809_htm.xml | 4073 | 2019-10-25 16:00:46 |
| extr-ex231_137.htm | 2913 | 2019-10-25 16:00:46 |
| extr-ex991_6.htm | 665025 | 2019-10-25 16:00:46 |
| FilingSummary.xml | 1791 | 2019-10-25 16:00:46 |
| Financial_Report.xlsx | 6080 | 2019-10-25 16:00:46 |
| MetaLinks.json | 20012 | 2019-10-25 16:00:46 |
| R1.htm | 40675 | 2019-10-25 16:00:46 |
| report.css | 2766 | 2019-10-25 16:00:46 |
| Show.js | 1085 | 2019-10-25 16:00:46 |