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| 0001564590-21-024926-index.html | 2021-05-06 16:01:25 | |
| 0001564590-21-024926.txt | 2021-05-06 16:01:25 | |
 0001564590-21-024926-xbrl.zip | 108009 | 2021-05-06 16:01:25 |
| alvr-10q_20210331.htm | 1957273 | 2021-05-06 16:01:25 |
| alvr-20210331.xml | 1044539 | 2021-05-06 16:01:25 |
| alvr-20210331.xsd | 52097 | 2021-05-06 16:01:25 |
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| alvr-20210331_lab.xml | 391445 | 2021-05-06 16:01:25 |
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| alvr-ex322_6.htm | 9699 | 2021-05-06 16:01:25 |
| FilingSummary.xml | 31934 | 2021-05-06 16:01:25 |
| Financial_Report.xlsx | 70198 | 2021-05-06 16:01:25 |
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| report.css | 2767 | 2021-05-06 16:01:25 |
| Show.js | 1085 | 2021-05-06 16:01:25 |