Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-24-000048-index-headers.html | 2024-12-23 17:21:06 | |
| 0000799233-24-000048-index.html | 2024-12-23 17:21:06 | |
| 0000799233-24-000048.txt | 2024-12-23 17:21:06 | |
 0000799233-24-000048-xbrl.zip | 9136 | 2024-12-23 17:21:06 |
| FilingSummary.xml | 1644 | 2024-12-23 17:21:06 |
| Financial_Report.xlsx | 5689 | 2024-12-23 17:21:06 |
| htld-20241219.htm | 27166 | 2024-12-23 17:21:06 |
| htld-20241219.xsd | 2058 | 2024-12-23 17:21:06 |
| htld-20241219_htm.xml | 2709 | 2024-12-23 17:21:06 |
| htld-20241219_lab.xml | 22150 | 2024-12-23 17:21:06 |
| htld-20241219_pre.xml | 12633 | 2024-12-23 17:21:06 |
| MetaLinks.json | 17281 | 2024-12-23 17:21:06 |
| R1.htm | 38113 | 2024-12-23 17:21:06 |
| report.css | 2766 | 2024-12-23 17:21:06 |
| Show.js | 1084 | 2024-12-23 17:21:06 |