Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-24-000034-index-headers.html | 2024-09-19 15:12:34 | |
| 0000799233-24-000034-index.html | 2024-09-19 15:12:34 | |
| 0000799233-24-000034.txt | 2024-09-19 15:12:34 | |
 0000799233-24-000034-xbrl.zip | 8796 | 2024-09-19 15:12:34 |
| FilingSummary.xml | 1630 | 2024-09-19 15:12:34 |
| Financial_Report.xlsx | 5681 | 2024-09-19 15:12:34 |
| htld-20240914.htm | 23777 | 2024-09-19 15:12:34 |
| htld-20240914.xsd | 1928 | 2024-09-19 15:12:34 |
| htld-20240914_htm.xml | 2710 | 2024-09-19 15:12:34 |
| htld-20240914_lab.xml | 21629 | 2024-09-19 15:12:34 |
| htld-20240914_pre.xml | 12526 | 2024-09-19 15:12:34 |
| MetaLinks.json | 17095 | 2024-09-19 15:12:34 |
| R1.htm | 38077 | 2024-09-19 15:12:34 |
| report.css | 2766 | 2024-09-19 15:12:34 |
| Show.js | 1084 | 2024-09-19 15:12:34 |