Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-26-000002-index-headers.html | 2026-01-07 16:10:33 | |
| 0000799233-26-000002-index.html | 2026-01-07 16:10:33 | |
| 0000799233-26-000002.txt | 2026-01-07 16:10:33 | |
 0000799233-26-000002-xbrl.zip | 8661 | 2026-01-07 16:10:33 |
| FilingSummary.xml | 1644 | 2026-01-07 16:10:33 |
| htld-20251231.htm | 25190 | 2026-01-07 16:10:33 |
| htld-20251231.xsd | 2058 | 2026-01-07 16:10:33 |
| htld-20251231_htm.xml | 2709 | 2026-01-07 16:10:33 |
| htld-20251231_lab.xml | 22150 | 2026-01-07 16:10:33 |
| htld-20251231_pre.xml | 12633 | 2026-01-07 16:10:33 |
| MetaLinks.json | 17280 | 2026-01-07 16:10:33 |
| R1.htm | 38098 | 2026-01-07 16:10:33 |
| report.css | 2766 | 2026-01-07 16:10:33 |
| Show.js | 1084 | 2026-01-07 16:10:33 |