Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-25-000004-index-headers.html | 2025-01-31 18:11:03 | |
| 0000799233-25-000004-index.html | 2025-01-31 18:11:03 | |
| 0000799233-25-000004.txt | 2025-01-31 18:11:03 | |
 0000799233-25-000004-xbrl.zip | 21941 | 2025-01-31 18:11:03 |
| a2024q4earningsrelease.htm | 185720 | 2025-01-31 18:11:03 |
| FilingSummary.xml | 1630 | 2025-01-31 18:11:03 |
| Financial_Report.xlsx | 5680 | 2025-01-31 18:11:03 |
| htld-20250128.htm | 29223 | 2025-01-31 18:11:03 |
| htld-20250128.xsd | 1809 | 2025-01-31 18:11:03 |
| htld-20250128_htm.xml | 2867 | 2025-01-31 18:11:03 |
| htld-20250128_lab.xml | 21629 | 2025-01-31 18:11:03 |
| htld-20250128_pre.xml | 12526 | 2025-01-31 18:11:03 |
| MetaLinks.json | 17095 | 2025-01-31 18:11:03 |
| R1.htm | 38077 | 2025-01-31 18:11:03 |
| report.css | 2767 | 2025-01-31 18:11:03 |
| Show.js | 1084 | 2025-01-31 18:11:03 |