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| 0000799233-15-000047-index.html | 2015-11-09 15:20:01 | |
| 0000799233-15-000047.txt | 2015-11-09 15:20:01 | |
 0000799233-15-000047-xbrl.zip | 116219 | 2015-11-09 15:20:01 |
| exhibit3112015q3.htm | 23485 | 2015-11-09 15:20:01 |
| exhibit3122015q3.htm | 24627 | 2015-11-09 15:20:01 |
| exhibit3212015q3.htm | 9641 | 2015-11-09 15:20:01 |
| exhibit3222015q3.htm | 10528 | 2015-11-09 15:20:01 |
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| Financial_Report.xlsx | 49459 | 2015-11-09 15:20:01 |
| htld-20150930.xml | 595859 | 2015-11-09 15:20:01 |
| htld-20150930.xsd | 32080 | 2015-11-09 15:20:01 |
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| htld2015q310q.htm | 791420 | 2015-11-09 15:20:01 |
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| report.css | 2767 | 2015-11-09 15:20:01 |
| Show.js | 1410 | 2015-11-09 15:20:01 |