Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-23-000032-index-headers.html | 2023-08-03 14:17:49 | |
| 0000799233-23-000032-index.html | 2023-08-03 14:17:49 | |
| 0000799233-23-000032.txt | 2023-08-03 14:17:49 | |
 0000799233-23-000032-xbrl.zip | 21991 | 2023-08-03 14:17:49 |
| FilingSummary.xml | 1983 | 2023-08-03 14:17:49 |
| Financial_Report.xlsx | 5684 | 2023-08-03 14:17:49 |
| htld-20230731.htm | 34847 | 2023-08-03 14:17:49 |
| htld-20230731.xsd | 1928 | 2023-08-03 14:17:49 |
| htld-20230731_htm.xml | 3477 | 2023-08-03 14:17:49 |
| htld-20230731_lab.xml | 23834 | 2023-08-03 14:17:49 |
| htld-20230731_pre.xml | 12526 | 2023-08-03 14:17:49 |
| htld2023q2earningsrelease.htm | 234036 | 2023-08-03 14:17:49 |
| MetaLinks.json | 17096 | 2023-08-03 14:17:49 |
| R1.htm | 38078 | 2023-08-03 14:17:49 |
| report.css | 2767 | 2023-08-03 14:17:49 |
| Show.js | 1084 | 2023-08-03 14:17:49 |