Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001140361-24-013522-index-headers.html | 2024-03-15 16:38:28 | |
| 0001140361-24-013522-index.html | 2024-03-15 16:38:28 | |
| 0001140361-24-013522.txt | 2024-03-15 16:38:28 | |
 0001140361-24-013522-xbrl.zip | 264395 | 2024-03-15 16:38:28 |
| ef20015315_10k.htm | 1281215 | 2024-03-15 16:38:28 |
| ef20015315_10k_htm.xml | 978909 | 2024-03-15 16:38:28 |
| ef20015315_ex23-1.htm | 2040 | 2024-03-15 16:38:28 |
| ef20015315_ex31-1.htm | 11928 | 2024-03-15 16:38:28 |
| ef20015315_ex31-2.htm | 12029 | 2024-03-15 16:38:28 |
| ef20015315_ex32-1.htm | 4694 | 2024-03-15 16:38:28 |
| ef20015315_ex32-2.htm | 4536 | 2024-03-15 16:38:28 |
| FilingSummary.xml | 32209 | 2024-03-15 16:38:28 |
| Financial_Report.xlsx | 81531 | 2024-03-15 16:38:28 |
 image01.jpg | 3777 | 2024-03-15 16:38:28 |
 image02.jpg | 36673 | 2024-03-15 16:38:28 |
| MetaLinks.json | 693106 | 2024-03-15 16:38:28 |
| R1.htm | 69961 | 2024-03-15 16:38:28 |
| R10.htm | 27906 | 2024-03-15 16:38:28 |
| R11.htm | 16580 | 2024-03-15 16:38:28 |
| R12.htm | 6262 | 2024-03-15 16:38:28 |
| R13.htm | 5519 | 2024-03-15 16:38:28 |
| R14.htm | 129781 | 2024-03-15 16:38:28 |
| R15.htm | 21001 | 2024-03-15 16:38:28 |
| R16.htm | 19421 | 2024-03-15 16:38:28 |
| R17.htm | 8247 | 2024-03-15 16:38:28 |
| R18.htm | 67744 | 2024-03-15 16:38:28 |
| R19.htm | 74413 | 2024-03-15 16:38:28 |
| R2.htm | 91274 | 2024-03-15 16:38:28 |
| R20.htm | 30117 | 2024-03-15 16:38:28 |
| R21.htm | 20714 | 2024-03-15 16:38:28 |
| R22.htm | 5134 | 2024-03-15 16:38:28 |
| R23.htm | 8469 | 2024-03-15 16:38:28 |
| R24.htm | 73051 | 2024-03-15 16:38:28 |
| R25.htm | 15368 | 2024-03-15 16:38:28 |
| R26.htm | 137328 | 2024-03-15 16:38:28 |
| R27.htm | 19812 | 2024-03-15 16:38:28 |
| R28.htm | 16759 | 2024-03-15 16:38:28 |
| R29.htm | 65236 | 2024-03-15 16:38:28 |
| R3.htm | 22243 | 2024-03-15 16:38:28 |
| R30.htm | 69518 | 2024-03-15 16:38:28 |
| R31.htm | 16404 | 2024-03-15 16:38:28 |
| R32.htm | 8796 | 2024-03-15 16:38:28 |
| R33.htm | 34624 | 2024-03-15 16:38:28 |
| R34.htm | 16955 | 2024-03-15 16:38:28 |
| R35.htm | 11882 | 2024-03-15 16:38:28 |
| R36.htm | 7913 | 2024-03-15 16:38:28 |
| R37.htm | 35996 | 2024-03-15 16:38:28 |
| R38.htm | 39845 | 2024-03-15 16:38:28 |
| R39.htm | 41073 | 2024-03-15 16:38:28 |
| R4.htm | 60772 | 2024-03-15 16:38:28 |
| R40.htm | 27088 | 2024-03-15 16:38:28 |
| R41.htm | 14868 | 2024-03-15 16:38:28 |
| R42.htm | 34313 | 2024-03-15 16:38:28 |
| R43.htm | 16540 | 2024-03-15 16:38:28 |
| R44.htm | 30980 | 2024-03-15 16:38:28 |
| R45.htm | 4261 | 2024-03-15 16:38:28 |
| R46.htm | 26847 | 2024-03-15 16:38:28 |
| R47.htm | 19590 | 2024-03-15 16:38:28 |
| R48.htm | 24199 | 2024-03-15 16:38:28 |
| R49.htm | 18373 | 2024-03-15 16:38:28 |
| R5.htm | 29449 | 2024-03-15 16:38:28 |
| R50.htm | 6347 | 2024-03-15 16:38:28 |
| R51.htm | 39297 | 2024-03-15 16:38:28 |
| R52.htm | 16408 | 2024-03-15 16:38:28 |
| R53.htm | 33671 | 2024-03-15 16:38:28 |
| R54.htm | 21248 | 2024-03-15 16:38:28 |
| R55.htm | 8748 | 2024-03-15 16:38:28 |
| R6.htm | 39523 | 2024-03-15 16:38:28 |
| R7.htm | 4457 | 2024-03-15 16:38:28 |
| R8.htm | 70446 | 2024-03-15 16:38:28 |
| R9.htm | 7375 | 2024-03-15 16:38:28 |
| report.css | 2767 | 2024-03-15 16:38:28 |
| Show.js | 1085 | 2024-03-15 16:38:28 |
| vhc-20231231.xsd | 41324 | 2024-03-15 16:38:28 |
| vhc-20231231_cal.xml | 61178 | 2024-03-15 16:38:28 |
| vhc-20231231_def.xml | 236240 | 2024-03-15 16:38:28 |
| vhc-20231231_lab.xml | 679984 | 2024-03-15 16:38:28 |
| vhc-20231231_pre.xml | 406867 | 2024-03-15 16:38:28 |