Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-24-000018-index-headers.html | 2024-04-29 22:00:03 | |
| 0000799233-24-000018-index.html | 2024-04-29 22:00:03 | |
| 0000799233-24-000018.txt | 2024-04-29 22:00:03 | |
 0000799233-24-000018-xbrl.zip | 20342 | 2024-04-29 22:00:03 |
| FilingSummary.xml | 1956 | 2024-04-29 22:00:03 |
| Financial_Report.xlsx | 5682 | 2024-04-29 22:00:03 |
| htld-20240423.htm | 34575 | 2024-04-29 22:00:03 |
| htld-20240423.xsd | 1928 | 2024-04-29 22:00:03 |
| htld-20240423_htm.xml | 3477 | 2024-04-29 22:00:03 |
| htld-20240423_lab.xml | 21629 | 2024-04-29 22:00:03 |
| htld-20240423_pre.xml | 12526 | 2024-04-29 22:00:03 |
| htld2024q1earningsrelease.htm | 192990 | 2024-04-29 22:00:03 |
| MetaLinks.json | 17096 | 2024-04-29 22:00:03 |
| R1.htm | 38081 | 2024-04-29 22:00:03 |
| report.css | 2767 | 2024-04-29 22:00:03 |
| Show.js | 1084 | 2024-04-29 22:00:03 |