Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-21-271445-index-headers.html | 2021-09-13 16:16:10 | |
| 0001193125-21-271445-index.html | 2021-09-13 16:16:10 | |
| 0001193125-21-271445.txt | 2021-09-13 16:16:10 | |
 0001193125-21-271445-xbrl.zip | 102129 | 2021-09-13 16:16:10 |
| alvr-20210908.xsd | 2889 | 2021-09-13 16:16:10 |
| alvr-20210908_lab.xml | 19657 | 2021-09-13 16:16:10 |
| alvr-20210908_pre.xml | 12313 | 2021-09-13 16:16:10 |
| d216131d8k.htm | 29957 | 2021-09-13 16:16:10 |
| d216131d8k_htm.xml | 3591 | 2021-09-13 16:16:10 |
| d216131dex101.htm | 62111 | 2021-09-13 16:16:10 |
| d216131dex102.htm | 494868 | 2021-09-13 16:16:10 |
| FilingSummary.xml | 1761 | 2021-09-13 16:16:10 |
| Financial_Report.xlsx | 5750 | 2021-09-13 16:16:10 |
| MetaLinks.json | 20199 | 2021-09-13 16:16:10 |
| R1.htm | 43473 | 2021-09-13 16:16:10 |
| report.css | 2767 | 2021-09-13 16:16:10 |
| Show.js | 1085 | 2021-09-13 16:16:10 |