Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-017673-index-headers.html | 2020-01-29 07:50:42 | |
| 0001193125-20-017673-index.html | 2020-01-29 07:50:42 | |
| 0001193125-20-017673.txt | 2020-01-29 07:50:42 | |
 0001193125-20-017673-xbrl.zip | 8280 | 2020-01-29 07:50:42 |
| d875859d8k.htm | 25608 | 2020-01-29 07:50:42 |
| d875859d8k_htm.xml | 3249 | 2020-01-29 07:50:42 |
| extr-20200128.xsd | 3091 | 2020-01-29 07:50:42 |
| extr-20200128_lab.xml | 17374 | 2020-01-29 07:50:42 |
| extr-20200128_pre.xml | 10967 | 2020-01-29 07:50:42 |
| FilingSummary.xml | 1704 | 2020-01-29 07:50:42 |
| Financial_Report.xlsx | 5770 | 2020-01-29 07:50:42 |
| MetaLinks.json | 18382 | 2020-01-29 07:50:42 |
| R1.htm | 38592 | 2020-01-29 07:50:42 |
| report.css | 2767 | 2020-01-29 07:50:42 |
| Show.js | 1085 | 2020-01-29 07:50:42 |