Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000059255-23-000071-index-headers.html | 2023-11-06 16:16:24 | |
| 0000059255-23-000071-index.html | 2023-11-06 16:16:24 | |
| 0000059255-23-000071.txt | 2023-11-06 16:16:24 | |
 0000059255-23-000071-xbrl.zip | 19940 | 2023-11-06 16:16:24 |
| FilingSummary.xml | 2135 | 2023-11-06 16:16:24 |
| Financial_Report.xlsx | 6673 | 2023-11-06 16:16:24 |
| MetaLinks.json | 96932 | 2023-11-06 16:16:24 |
| R1.htm | 39604 | 2023-11-06 16:16:24 |
| R2.htm | 22668 | 2023-11-06 16:16:24 |
| report.css | 2767 | 2023-11-06 16:16:24 |
| Show.js | 1085 | 2023-11-06 16:16:24 |
| vhl-20231106.xsd | 3239 | 2023-11-06 16:16:24 |
| vhl-20231106x8k.htm | 48991 | 2023-11-06 16:16:24 |
| vhl-20231106x8k_htm.xml | 4826 | 2023-11-06 16:16:24 |
| vhl-20231106xex99d1.htm | 216034 | 2023-11-06 16:16:24 |
 vhl-20231106xex99d1001.jpg | 7147 | 2023-11-06 16:16:24 |
| vhl-20231106_lab.xml | 633 | 2023-11-06 16:16:24 |
| vhl-20231106_pre.xml | 10664 | 2023-11-06 16:16:24 |