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|---|---|---|
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| 0000950170-23-017814-index.html | 2023-05-04 16:01:03 | |
| 0000950170-23-017814.txt | 2023-05-04 16:01:03 | |
 0000950170-23-017814-xbrl.zip | 234854 | 2023-05-04 16:01:03 |
| alvr-20230331.htm | 2291579 | 2023-05-04 16:01:03 |
| alvr-20230331.xsd | 40474 | 2023-05-04 16:01:03 |
| alvr-20230331_cal.xml | 37354 | 2023-05-04 16:01:03 |
| alvr-20230331_def.xml | 102659 | 2023-05-04 16:01:03 |
| alvr-20230331_htm.xml | 1302985 | 2023-05-04 16:01:03 |
| alvr-20230331_lab.xml | 345362 | 2023-05-04 16:01:03 |
| alvr-20230331_pre.xml | 240474 | 2023-05-04 16:01:03 |
| alvr-ex31_1.htm | 21007 | 2023-05-04 16:01:03 |
| alvr-ex31_2.htm | 19594 | 2023-05-04 16:01:03 |
| alvr-ex32_1.htm | 11284 | 2023-05-04 16:01:03 |
| alvr-ex32_2.htm | 11322 | 2023-05-04 16:01:03 |
| FilingSummary.xml | 29265 | 2023-05-04 16:01:03 |
| Financial_Report.xlsx | 61784 | 2023-05-04 16:01:03 |
| MetaLinks.json | 562227 | 2023-05-04 16:01:03 |
| R1.htm | 53325 | 2023-05-04 16:01:03 |
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| R9.htm | 85607 | 2023-05-04 16:01:03 |
| report.css | 2767 | 2023-05-04 16:01:03 |
| Show.js | 1085 | 2023-05-04 16:01:03 |