Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-20-048160-index-headers.html | 2020-10-28 07:13:31 | |
| 0001564590-20-048160-index.html | 2020-10-28 07:13:31 | |
| 0001564590-20-048160.txt | 2020-10-28 07:13:31 | |
 0001564590-20-048160-xbrl.zip | 40430 | 2020-10-28 07:13:31 |
| extr-20201028.xsd | 5804 | 2020-10-28 07:13:31 |
| extr-20201028_lab.xml | 18700 | 2020-10-28 07:13:31 |
| extr-20201028_pre.xml | 11194 | 2020-10-28 07:13:31 |
| extr-8k_20201028.htm | 32990 | 2020-10-28 07:13:31 |
| extr-8k_20201028_htm.xml | 3389 | 2020-10-28 07:13:31 |
| extr-ex991_6.htm | 895183 | 2020-10-28 07:13:31 |
| FilingSummary.xml | 1750 | 2020-10-28 07:13:31 |
| Financial_Report.xlsx | 5429 | 2020-10-28 07:13:31 |
| MetaLinks.json | 19359 | 2020-10-28 07:13:31 |
| R1.htm | 38584 | 2020-10-28 07:13:31 |
| report.css | 2767 | 2020-10-28 07:13:31 |
| Show.js | 1084 | 2020-10-28 07:13:31 |