Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000059255-23-000053-index-headers.html | 2023-05-25 16:17:16 | |
| 0000059255-23-000053-index.html | 2023-05-25 16:17:16 | |
| 0000059255-23-000053.txt | 2023-05-25 16:17:16 | |
 0000059255-23-000053-xbrl.zip | 11639 | 2023-05-25 16:17:16 |
| FilingSummary.xml | 2376 | 2023-05-25 16:17:16 |
| Financial_Report.xlsx | 6672 | 2023-05-25 16:17:16 |
| MetaLinks.json | 96932 | 2023-05-25 16:17:16 |
| R1.htm | 39601 | 2023-05-25 16:17:16 |
| R2.htm | 22667 | 2023-05-25 16:17:16 |
| report.css | 2767 | 2023-05-25 16:17:16 |
| Show.js | 1085 | 2023-05-25 16:17:16 |
| vhl-20230525.xsd | 3238 | 2023-05-25 16:17:16 |
| vhl-20230525x8k.htm | 57090 | 2023-05-25 16:17:16 |
| vhl-20230525x8k_htm.xml | 4826 | 2023-05-25 16:17:16 |
| vhl-20230525xex99d1.htm | 8037 | 2023-05-25 16:17:16 |
 vhl-20230525xex99d1001.jpg | 6069 | 2023-05-25 16:17:16 |
| vhl-20230525_lab.xml | 632 | 2023-05-25 16:17:16 |
| vhl-20230525_pre.xml | 10663 | 2023-05-25 16:17:16 |