Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-26-000012-index-headers.html | 2026-03-31 16:30:35 | |
| 0000799233-26-000012-index.html | 2026-03-31 16:30:35 | |
| 0000799233-26-000012.txt | 2026-03-31 16:30:35 | |
 0000799233-26-000012-xbrl.zip | 8765 | 2026-03-31 16:30:35 |
| FilingSummary.xml | 1644 | 2026-03-31 16:30:35 |
| htld-20260325.htm | 25928 | 2026-03-31 16:30:35 |
| htld-20260325.xsd | 2058 | 2026-03-31 16:30:35 |
| htld-20260325_htm.xml | 2709 | 2026-03-31 16:30:35 |
| htld-20260325_lab.xml | 22150 | 2026-03-31 16:30:35 |
| htld-20260325_pre.xml | 12633 | 2026-03-31 16:30:35 |
| MetaLinks.json | 17280 | 2026-03-31 16:30:35 |
| R1.htm | 38098 | 2026-03-31 16:30:35 |
| report.css | 2766 | 2026-03-31 16:30:35 |
| Show.js | 1084 | 2026-03-31 16:30:35 |