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| 0000799233-15-000036-index.html | 2015-08-10 14:39:16 | |
| 0000799233-15-000036.txt | 2015-08-10 14:39:16 | |
 0000799233-15-000036-xbrl.zip | 107642 | 2015-08-10 14:39:16 |
| exhibit3112015q2.htm | 23497 | 2015-08-10 14:39:16 |
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| exhibit3212015q2.htm | 9647 | 2015-08-10 14:39:16 |
| exhibit3222015q2.htm | 10534 | 2015-08-10 14:39:16 |
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| htld-20150630.xsd | 32021 | 2015-08-10 14:39:16 |
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| report.css | 2767 | 2015-08-10 14:39:16 |
| Show.js | 1410 | 2015-08-10 14:39:16 |