Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-22-000070-index-headers.html | 2022-11-28 18:44:47 | |
| 0000799233-22-000070-index.html | 2022-11-28 18:44:47 | |
| 0000799233-22-000070.txt | 2022-11-28 18:44:47 | |
 0000799233-22-000070-xbrl.zip | 12014 | 2022-11-28 18:44:47 |
| FilingSummary.xml | 1677 | 2022-11-28 18:44:47 |
| Financial_Report.xlsx | 5689 | 2022-11-28 18:44:47 |
| htld-20221125.htm | 38427 | 2022-11-28 18:44:47 |
| htld-20221125.xsd | 2175 | 2022-11-28 18:44:47 |
| htld-20221125_htm.xml | 10816 | 2022-11-28 18:44:47 |
| htld-20221125_lab.xml | 24451 | 2022-11-28 18:44:47 |
| htld-20221125_pre.xml | 12631 | 2022-11-28 18:44:47 |
| htld2022q4dividendreleasee.htm | 4048 | 2022-11-28 18:44:47 |
| MetaLinks.json | 16849 | 2022-11-28 18:44:47 |
| R1.htm | 38124 | 2022-11-28 18:44:47 |
| report.css | 2767 | 2022-11-28 18:44:47 |
| Show.js | 1084 | 2022-11-28 18:44:47 |