Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-23-000035-index-headers.html | 2023-08-04 10:03:55 | |
| 0000799233-23-000035-index.html | 2023-08-04 10:03:55 | |
| 0000799233-23-000035.txt | 2023-08-04 10:03:55 | |
 0000799233-23-000035-xbrl.zip | 8794 | 2023-08-04 10:03:55 |
| FilingSummary.xml | 1613 | 2023-08-04 10:03:55 |
| Financial_Report.xlsx | 5682 | 2023-08-04 10:03:55 |
| htld-20230731.htm | 23847 | 2023-08-04 10:03:55 |
| htld-20230731.xsd | 1928 | 2023-08-04 10:03:55 |
| htld-20230731_htm.xml | 2710 | 2023-08-04 10:03:55 |
| htld-20230731_lab.xml | 23834 | 2023-08-04 10:03:55 |
| htld-20230731_pre.xml | 12526 | 2023-08-04 10:03:55 |
| MetaLinks.json | 17096 | 2023-08-04 10:03:55 |
| R1.htm | 38079 | 2023-08-04 10:03:55 |
| report.css | 2766 | 2023-08-04 10:03:55 |
| Show.js | 1084 | 2023-08-04 10:03:55 |