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 0001193125-20-249826-index-headers.html | 2020-09-21 10:21:03 | |
| 0001193125-20-249826-index.html | 2020-09-21 10:21:03 | |
| 0001193125-20-249826.txt | 2020-09-21 10:21:03 | |
 0001193125-20-249826-xbrl.zip | 37984 | 2020-09-21 10:21:03 |
| d70744d8k.htm | 38783 | 2020-09-21 10:21:03 |
| d70744d8k_htm.xml | 9962 | 2020-09-21 10:21:03 |
| d70744dex42.htm | 144442 | 2020-09-21 10:21:03 |
| d70744dex51.htm | 9065 | 2020-09-21 10:21:03 |
| FilingSummary.xml | 2051 | 2020-09-21 10:21:03 |
| Financial_Report.xlsx | 5805 | 2020-09-21 10:21:03 |
 g70744g0919085121445.jpg | 4175 | 2020-09-21 10:21:03 |
| MetaLinks.json | 24399 | 2020-09-21 10:21:03 |
| R1.htm | 52020 | 2020-09-21 10:21:03 |
| report.css | 2766 | 2020-09-21 10:21:03 |
| Show.js | 1085 | 2020-09-21 10:21:03 |
| wrb-20200921.xsd | 5305 | 2020-09-21 10:21:03 |
| wrb-20200921_def.xml | 15034 | 2020-09-21 10:21:03 |
| wrb-20200921_lab.xml | 25542 | 2020-09-21 10:21:03 |
| wrb-20200921_pre.xml | 16197 | 2020-09-21 10:21:03 |