Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000059255-22-000083-index-headers.html | 2022-12-16 16:29:00 | |
| 0000059255-22-000083-index.html | 2022-12-16 16:29:00 | |
| 0000059255-22-000083.txt | 2022-12-16 16:29:00 | |
 0000059255-22-000083-xbrl.zip | 8833 | 2022-12-16 16:29:00 |
| FilingSummary.xml | 2337 | 2022-12-16 16:29:00 |
| Financial_Report.xlsx | 6675 | 2022-12-16 16:29:00 |
| MetaLinks.json | 95096 | 2022-12-16 16:29:00 |
| R1.htm | 39605 | 2022-12-16 16:29:00 |
| R2.htm | 22670 | 2022-12-16 16:29:00 |
| report.css | 2767 | 2022-12-16 16:29:00 |
| Show.js | 1084 | 2022-12-16 16:29:00 |
| vhl-20221212.xsd | 3240 | 2022-12-16 16:29:00 |
| vhl-20221212x8k.htm | 43170 | 2022-12-16 16:29:00 |
| vhl-20221212x8k_htm.xml | 4826 | 2022-12-16 16:29:00 |
| vhl-20221212_lab.xml | 634 | 2022-12-16 16:29:00 |
| vhl-20221212_pre.xml | 10665 | 2022-12-16 16:29:00 |