Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-24-000028-index-headers.html | 2024-08-06 18:11:06 | |
| 0000799233-24-000028-index.html | 2024-08-06 18:11:06 | |
| 0000799233-24-000028.txt | 2024-08-06 18:11:06 | |
 0000799233-24-000028-xbrl.zip | 8800 | 2024-08-06 18:11:06 |
| FilingSummary.xml | 1633 | 2024-08-06 18:11:06 |
| Financial_Report.xlsx | 5683 | 2024-08-06 18:11:06 |
| htld-20240802.htm | 23745 | 2024-08-06 18:11:06 |
| htld-20240802.xsd | 1928 | 2024-08-06 18:11:06 |
| htld-20240802_htm.xml | 2710 | 2024-08-06 18:11:06 |
| htld-20240802_lab.xml | 21629 | 2024-08-06 18:11:06 |
| htld-20240802_pre.xml | 12526 | 2024-08-06 18:11:06 |
| MetaLinks.json | 17095 | 2024-08-06 18:11:06 |
| R1.htm | 38082 | 2024-08-06 18:11:06 |
| report.css | 2766 | 2024-08-06 18:11:06 |
| Show.js | 1084 | 2024-08-06 18:11:06 |