Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-19-269734-index-headers.html | 2019-10-18 08:17:48 | |
| 0001193125-19-269734-index.html | 2019-10-18 08:17:48 | |
| 0001193125-19-269734.txt | 2019-10-18 08:17:48 | |
 0001193125-19-269734-xbrl.zip | 10987 | 2019-10-18 08:17:48 |
| d814531d8k.htm | 26758 | 2019-10-18 08:17:48 |
| d814531d8k_htm.xml | 3277 | 2019-10-18 08:17:48 |
| d814531dex991.htm | 7626 | 2019-10-18 08:17:48 |
| extr-20191018.xsd | 3091 | 2019-10-18 08:17:48 |
| extr-20191018_lab.xml | 17374 | 2019-10-18 08:17:48 |
| extr-20191018_pre.xml | 10967 | 2019-10-18 08:17:48 |
| FilingSummary.xml | 1734 | 2019-10-18 08:17:48 |
| Financial_Report.xlsx | 5791 | 2019-10-18 08:17:48 |
 g814531g1018081417355.jpg | 2269 | 2019-10-18 08:17:48 |
| MetaLinks.json | 18412 | 2019-10-18 08:17:48 |
| R1.htm | 38616 | 2019-10-18 08:17:48 |
| report.css | 2767 | 2019-10-18 08:17:48 |
| Show.js | 1084 | 2019-10-18 08:17:48 |