Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-24-000024-index-headers.html | 2024-06-18 09:31:01 | |
| 0000799233-24-000024-index.html | 2024-06-18 09:31:01 | |
| 0000799233-24-000024.txt | 2024-06-18 09:31:01 | |
 0000799233-24-000024-xbrl.zip | 10546 | 2024-06-18 09:31:01 |
| FilingSummary.xml | 1649 | 2024-06-18 09:31:01 |
| Financial_Report.xlsx | 5690 | 2024-06-18 09:31:01 |
| htld-20240614.htm | 30278 | 2024-06-18 09:31:01 |
| htld-20240614.xsd | 2177 | 2024-06-18 09:31:01 |
| htld-20240614_htm.xml | 2709 | 2024-06-18 09:31:01 |
| htld-20240614_lab.xml | 22150 | 2024-06-18 09:31:01 |
| htld-20240614_pre.xml | 12633 | 2024-06-18 09:31:01 |
| htld2024q2dividendreleasee.htm | 3976 | 2024-06-18 09:31:01 |
| MetaLinks.json | 17281 | 2024-06-18 09:31:01 |
| R1.htm | 38119 | 2024-06-18 09:31:01 |
| report.css | 2767 | 2024-06-18 09:31:01 |
| Show.js | 1084 | 2024-06-18 09:31:01 |