Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-19-038508-index-headers.html | 2019-10-30 07:31:44 | |
| 0001564590-19-038508-index.html | 2019-10-30 07:31:44 | |
| 0001564590-19-038508.txt | 2019-10-30 07:31:44 | |
 0001564590-19-038508-xbrl.zip | 39814 | 2019-10-30 07:31:44 |
| extr-20191030.xsd | 5996 | 2019-10-30 07:31:44 |
| extr-20191030_lab.xml | 18735 | 2019-10-30 07:31:44 |
| extr-20191030_pre.xml | 11194 | 2019-10-30 07:31:44 |
| extr-8k_20191030.htm | 32863 | 2019-10-30 07:31:44 |
| extr-8k_20191030_htm.xml | 3387 | 2019-10-30 07:31:44 |
| extr-ex991_6.htm | 912937 | 2019-10-30 07:31:44 |
| FilingSummary.xml | 1750 | 2019-10-30 07:31:44 |
| Financial_Report.xlsx | 5793 | 2019-10-30 07:31:44 |
| MetaLinks.json | 19458 | 2019-10-30 07:31:44 |
| R1.htm | 38612 | 2019-10-30 07:31:44 |
| report.css | 2767 | 2019-10-30 07:31:44 |
| Show.js | 1085 | 2019-10-30 07:31:44 |