Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-24-000002-index-headers.html | 2024-02-02 17:06:11 | |
| 0000799233-24-000002-index.html | 2024-02-02 17:06:11 | |
| 0000799233-24-000002.txt | 2024-02-02 17:06:11 | |
 0000799233-24-000002-xbrl.zip | 21660 | 2024-02-02 17:06:11 |
| a2023q4earningsrelease.htm | 183679 | 2024-02-02 17:06:11 |
| FilingSummary.xml | 1632 | 2024-02-02 17:06:11 |
| Financial_Report.xlsx | 5681 | 2024-02-02 17:06:11 |
| htld-20240131.htm | 33496 | 2024-02-02 17:06:11 |
| htld-20240131.xsd | 1928 | 2024-02-02 17:06:11 |
| htld-20240131_htm.xml | 2867 | 2024-02-02 17:06:11 |
| htld-20240131_lab.xml | 23834 | 2024-02-02 17:06:11 |
| htld-20240131_pre.xml | 12526 | 2024-02-02 17:06:11 |
| MetaLinks.json | 17096 | 2024-02-02 17:06:11 |
| R1.htm | 38081 | 2024-02-02 17:06:11 |
| report.css | 2767 | 2024-02-02 17:06:11 |
| Show.js | 1084 | 2024-02-02 17:06:11 |