Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000799233-19-000038-index-headers.html | 2019-10-31 12:09:22 | |
| 0000799233-19-000038-index.html | 2019-10-31 12:09:22 | |
| 0000799233-19-000038.txt | 2019-10-31 12:09:22 | |
 0000799233-19-000038-xbrl.zip | 25333 | 2019-10-31 12:09:22 |
| earningrelease8k2019q3.htm | 54184 | 2019-10-31 12:09:22 |
| earningrelease8k2019q3_htm.xml | 4257 | 2019-10-31 12:09:22 |
| FilingSummary.xml | 1770 | 2019-10-31 12:09:22 |
| Financial_Report.xlsx | 5793 | 2019-10-31 12:09:22 |
| htld-20191030.xsd | 4844 | 2019-10-31 12:09:22 |
| htld-20191030_cal.xml | 636 | 2019-10-31 12:09:22 |
| htld-20191030_def.xml | 1486 | 2019-10-31 12:09:22 |
| htld-20191030_lab.xml | 26457 | 2019-10-31 12:09:22 |
| htld-20191030_pre.xml | 13681 | 2019-10-31 12:09:22 |
| htld2019q3earningsrele.htm | 275039 | 2019-10-31 12:09:22 |
| MetaLinks.json | 18587 | 2019-10-31 12:09:22 |
| R1.htm | 38635 | 2019-10-31 12:09:22 |
| report.css | 2767 | 2019-10-31 12:09:22 |
| Show.js | 1085 | 2019-10-31 12:09:22 |