Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-25-000030-index-headers.html | 2025-05-02 13:49:50 | |
| 0000799233-25-000030-index.html | 2025-05-02 13:49:50 | |
| 0000799233-25-000030.txt | 2025-05-02 13:49:50 | |
 0000799233-25-000030-xbrl.zip | 19544 | 2025-05-02 13:49:50 |
| FilingSummary.xml | 1630 | 2025-05-02 13:49:50 |
| Financial_Report.xlsx | 5703 | 2025-05-02 13:49:50 |
| htld-20250430.htm | 29976 | 2025-05-02 13:49:50 |
| htld-20250430.xsd | 1809 | 2025-05-02 13:49:50 |
| htld-20250430_htm.xml | 3380 | 2025-05-02 13:49:50 |
| htld-20250430_lab.xml | 21629 | 2025-05-02 13:49:50 |
| htld-20250430_pre.xml | 12526 | 2025-05-02 13:49:50 |
| htld2025q1earningsrelease.htm | 175827 | 2025-05-02 13:49:50 |
| MetaLinks.json | 17095 | 2025-05-02 13:49:50 |
| R1.htm | 38062 | 2025-05-02 13:49:50 |
| report.css | 2767 | 2025-05-02 13:49:50 |
| Show.js | 1084 | 2025-05-02 13:49:50 |