Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-24-000036-index-headers.html | 2024-09-19 15:46:26 | |
| 0000799233-24-000036-index.html | 2024-09-19 15:46:26 | |
| 0000799233-24-000036.txt | 2024-09-19 15:46:26 | |
 0000799233-24-000036-xbrl.zip | 10550 | 2024-09-19 15:46:26 |
| FilingSummary.xml | 1644 | 2024-09-19 15:46:26 |
| Financial_Report.xlsx | 5690 | 2024-09-19 15:46:26 |
| htld-20240917.htm | 30298 | 2024-09-19 15:46:26 |
| htld-20240917.xsd | 2177 | 2024-09-19 15:46:26 |
| htld-20240917_htm.xml | 2709 | 2024-09-19 15:46:26 |
| htld-20240917_lab.xml | 22150 | 2024-09-19 15:46:26 |
| htld-20240917_pre.xml | 12633 | 2024-09-19 15:46:26 |
| htld2024q3dividendreleasee.htm | 3994 | 2024-09-19 15:46:26 |
| MetaLinks.json | 17281 | 2024-09-19 15:46:26 |
| R1.htm | 38113 | 2024-09-19 15:46:26 |
| report.css | 2767 | 2024-09-19 15:46:26 |
| Show.js | 1084 | 2024-09-19 15:46:26 |