Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-24-000038-index-headers.html | 2024-10-29 17:10:30 | |
| 0000799233-24-000038-index.html | 2024-10-29 17:10:30 | |
| 0000799233-24-000038.txt | 2024-10-29 17:10:30 | |
 0000799233-24-000038-xbrl.zip | 21260 | 2024-10-29 17:10:30 |
| FilingSummary.xml | 1630 | 2024-10-29 17:10:30 |
| Financial_Report.xlsx | 5683 | 2024-10-29 17:10:30 |
| htld-20241029.htm | 34608 | 2024-10-29 17:10:30 |
| htld-20241029.xsd | 1809 | 2024-10-29 17:10:30 |
| htld-20241029_htm.xml | 3477 | 2024-10-29 17:10:30 |
| htld-20241029_lab.xml | 21629 | 2024-10-29 17:10:30 |
| htld-20241029_pre.xml | 12526 | 2024-10-29 17:10:30 |
| htld2024q3earningsrelease.htm | 211686 | 2024-10-29 17:10:30 |
| MetaLinks.json | 17096 | 2024-10-29 17:10:30 |
| R1.htm | 38077 | 2024-10-29 17:10:30 |
| report.css | 2767 | 2024-10-29 17:10:30 |
| Show.js | 1084 | 2024-10-29 17:10:30 |