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|---|---|---|
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| 0000950170-22-007792-index.html | 2022-05-05 16:01:07 | |
| 0000950170-22-007792.txt | 2022-05-05 16:01:07 | |
 0000950170-22-007792-xbrl.zip | 255582 | 2022-05-05 16:01:07 |
| alvr-20220331.htm | 2330323 | 2022-05-05 16:01:07 |
| alvr-20220331.xsd | 43326 | 2022-05-05 16:01:07 |
| alvr-20220331_cal.xml | 41446 | 2022-05-05 16:01:07 |
| alvr-20220331_def.xml | 127118 | 2022-05-05 16:01:07 |
| alvr-20220331_htm.xml | 1322116 | 2022-05-05 16:01:07 |
| alvr-20220331_lab.xml | 388651 | 2022-05-05 16:01:07 |
| alvr-20220331_pre.xml | 268794 | 2022-05-05 16:01:07 |
| alvr-ex31_1.htm | 19172 | 2022-05-05 16:01:07 |
| alvr-ex31_2.htm | 19206 | 2022-05-05 16:01:07 |
| alvr-ex32_1.htm | 11013 | 2022-05-05 16:01:07 |
| alvr-ex32_2.htm | 11051 | 2022-05-05 16:01:07 |
| FilingSummary.xml | 28519 | 2022-05-05 16:01:07 |
| Financial_Report.xlsx | 63201 | 2022-05-05 16:01:07 |
| MetaLinks.json | 548393 | 2022-05-05 16:01:07 |
| R1.htm | 54148 | 2022-05-05 16:01:07 |
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| R9.htm | 95760 | 2022-05-05 16:01:07 |
| report.css | 2767 | 2022-05-05 16:01:07 |
| Show.js | 1085 | 2022-05-05 16:01:07 |