Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-19-288358-index-headers.html | 2019-11-08 16:07:10 | |
| 0001193125-19-288358-index.html | 2019-11-08 16:07:10 | |
| 0001193125-19-288358.txt | 2019-11-08 16:07:10 | |
 0001193125-19-288358-xbrl.zip | 8896 | 2019-11-08 16:07:10 |
| d792732d8k.htm | 51214 | 2019-11-08 16:07:10 |
| d792732d8k_htm.xml | 3249 | 2019-11-08 16:07:10 |
| extr-20191107.xsd | 3091 | 2019-11-08 16:07:10 |
| extr-20191107_lab.xml | 17374 | 2019-11-08 16:07:10 |
| extr-20191107_pre.xml | 10967 | 2019-11-08 16:07:10 |
| FilingSummary.xml | 1699 | 2019-11-08 16:07:10 |
| Financial_Report.xlsx | 5772 | 2019-11-08 16:07:10 |
| MetaLinks.json | 18382 | 2019-11-08 16:07:10 |
| R1.htm | 38589 | 2019-11-08 16:07:10 |
| report.css | 2767 | 2019-11-08 16:07:10 |
| Show.js | 1084 | 2019-11-08 16:07:10 |