Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-20-051993-index-headers.html | 2020-11-06 16:26:57 | |
| 0001564590-20-051993-index.html | 2020-11-06 16:26:57 | |
| 0001564590-20-051993.txt | 2020-11-06 16:26:57 | |
 0001564590-20-051993-xbrl.zip | 10388 | 2020-11-06 16:26:57 |
| extr-20201105.xsd | 5804 | 2020-11-06 16:26:57 |
| extr-20201105_lab.xml | 18702 | 2020-11-06 16:26:57 |
| extr-20201105_pre.xml | 11196 | 2020-11-06 16:26:57 |
| extr-8k_20201105.htm | 97009 | 2020-11-06 16:26:57 |
| extr-8k_20201105_htm.xml | 3389 | 2020-11-06 16:26:57 |
| FilingSummary.xml | 1716 | 2020-11-06 16:26:57 |
| Financial_Report.xlsx | 5431 | 2020-11-06 16:26:57 |
| MetaLinks.json | 19361 | 2020-11-06 16:26:57 |
| R1.htm | 38585 | 2020-11-06 16:26:57 |
| report.css | 2766 | 2020-11-06 16:26:57 |
| Show.js | 1084 | 2020-11-06 16:26:57 |