Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000059255-22-000080-index-headers.html | 2022-11-03 16:22:41 | |
| 0000059255-22-000080-index.html | 2022-11-03 16:22:41 | |
| 0000059255-22-000080.txt | 2022-11-03 16:22:41 | |
 0000059255-22-000080-xbrl.zip | 20741 | 2022-11-03 16:22:41 |
| FilingSummary.xml | 2419 | 2022-11-03 16:22:41 |
| Financial_Report.xlsx | 6673 | 2022-11-03 16:22:41 |
| MetaLinks.json | 95096 | 2022-11-03 16:22:41 |
| R1.htm | 39606 | 2022-11-03 16:22:41 |
| R2.htm | 22671 | 2022-11-03 16:22:41 |
| report.css | 2767 | 2022-11-03 16:22:41 |
| Show.js | 1085 | 2022-11-03 16:22:41 |
| vhl-20221103.xsd | 3238 | 2022-11-03 16:22:41 |
| vhl-20221103x8k.htm | 46216 | 2022-11-03 16:22:41 |
| vhl-20221103x8k_htm.xml | 4826 | 2022-11-03 16:22:41 |
| vhl-20221103xex99d1.htm | 208558 | 2022-11-03 16:22:41 |
 vhl-20221103xex99d1001.jpg | 46227 | 2022-11-03 16:22:41 |
| vhl-20221103xex99d2.htm | 7807 | 2022-11-03 16:22:41 |
 vhl-20221103xex99d2001.jpg | 7545 | 2022-11-03 16:22:41 |
| vhl-20221103_lab.xml | 632 | 2022-11-03 16:22:41 |
| vhl-20221103_pre.xml | 10663 | 2022-11-03 16:22:41 |