Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-25-000002-index-headers.html | 2025-01-06 16:16:55 | |
| 0000799233-25-000002-index.html | 2025-01-06 16:16:55 | |
| 0000799233-25-000002.txt | 2025-01-06 16:16:55 | |
 0000799233-25-000002-xbrl.zip | 9245 | 2025-01-06 16:16:55 |
| FilingSummary.xml | 1644 | 2025-01-06 16:16:55 |
| Financial_Report.xlsx | 5691 | 2025-01-06 16:16:55 |
| htld-20250101.htm | 28280 | 2025-01-06 16:16:55 |
| htld-20250101.xsd | 2058 | 2025-01-06 16:16:55 |
| htld-20250101_htm.xml | 2709 | 2025-01-06 16:16:55 |
| htld-20250101_lab.xml | 22150 | 2025-01-06 16:16:55 |
| htld-20250101_pre.xml | 12633 | 2025-01-06 16:16:55 |
| MetaLinks.json | 17281 | 2025-01-06 16:16:55 |
| R1.htm | 38114 | 2025-01-06 16:16:55 |
| report.css | 2766 | 2025-01-06 16:16:55 |
| Show.js | 1084 | 2025-01-06 16:16:55 |