Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-20-002375-index-headers.html | 2020-01-29 07:30:48 | |
| 0001564590-20-002375-index.html | 2020-01-29 07:30:48 | |
| 0001564590-20-002375.txt | 2020-01-29 07:30:48 | |
 0001564590-20-002375-xbrl.zip | 44084 | 2020-01-29 07:30:48 |
| extr-20200129.xsd | 5996 | 2020-01-29 07:30:48 |
| extr-20200129_lab.xml | 18735 | 2020-01-29 07:30:48 |
| extr-20200129_pre.xml | 11194 | 2020-01-29 07:30:48 |
| extr-8k_20200129.htm | 32748 | 2020-01-29 07:30:48 |
| extr-8k_20200129_htm.xml | 3387 | 2020-01-29 07:30:48 |
| extr-ex991_6.htm | 1170730 | 2020-01-29 07:30:48 |
| FilingSummary.xml | 1755 | 2020-01-29 07:30:48 |
| Financial_Report.xlsx | 5792 | 2020-01-29 07:30:48 |
| MetaLinks.json | 19458 | 2020-01-29 07:30:48 |
| R1.htm | 38618 | 2020-01-29 07:30:48 |
| report.css | 2767 | 2020-01-29 07:30:48 |
| Show.js | 1085 | 2020-01-29 07:30:48 |