Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-25-000033-index-headers.html | 2025-05-09 09:07:12 | |
| 0000799233-25-000033-index.html | 2025-05-09 09:07:12 | |
| 0000799233-25-000033.txt | 2025-05-09 09:07:12 | |
 0000799233-25-000033-xbrl.zip | 9572 | 2025-05-09 09:07:12 |
| FilingSummary.xml | 1630 | 2025-05-09 09:07:12 |
| Financial_Report.xlsx | 5702 | 2025-05-09 09:07:12 |
| htld-20250508.htm | 41473 | 2025-05-09 09:07:12 |
| htld-20250508.xsd | 1809 | 2025-05-09 09:07:12 |
| htld-20250508_htm.xml | 2710 | 2025-05-09 09:07:12 |
| htld-20250508_lab.xml | 21629 | 2025-05-09 09:07:12 |
| htld-20250508_pre.xml | 12526 | 2025-05-09 09:07:12 |
| MetaLinks.json | 17095 | 2025-05-09 09:07:12 |
| R1.htm | 38062 | 2025-05-09 09:07:12 |
| report.css | 2766 | 2025-05-09 09:07:12 |
| Show.js | 1084 | 2025-05-09 09:07:12 |