Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-19-235271-index-headers.html | 2019-08-30 16:02:44 | |
| 0001193125-19-235271-index.html | 2019-08-30 16:02:44 | |
| 0001193125-19-235271.txt | 2019-08-30 16:02:44 | |
 0001193125-19-235271-xbrl.zip | 7909 | 2019-08-30 16:02:44 |
| d767607d8ka.htm | 23091 | 2019-08-30 16:02:44 |
| d767607d8ka_htm.xml | 3279 | 2019-08-30 16:02:44 |
| extr-20190822.xsd | 3090 | 2019-08-30 16:02:44 |
| extr-20190822_lab.xml | 17373 | 2019-08-30 16:02:44 |
| extr-20190822_pre.xml | 10966 | 2019-08-30 16:02:44 |
| FilingSummary.xml | 1704 | 2019-08-30 16:02:44 |
| Financial_Report.xlsx | 5791 | 2019-08-30 16:02:44 |
| MetaLinks.json | 18416 | 2019-08-30 16:02:44 |
| R1.htm | 38617 | 2019-08-30 16:02:44 |
| report.css | 2766 | 2019-08-30 16:02:44 |
| Show.js | 1084 | 2019-08-30 16:02:44 |