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| 0000799233-14-000051-index.html | 2014-08-08 17:58:28 | |
| 0000799233-14-000051.txt | 2014-08-08 17:58:28 | |
 0000799233-14-000051-xbrl.zip | 108041 | 2014-08-08 17:58:28 |
| exhibit3112014q2.htm | 23523 | 2014-08-08 17:58:28 |
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| exhibit3212014q2.htm | 9688 | 2014-08-08 17:58:28 |
| exhibit3222014q2.htm | 10575 | 2014-08-08 17:58:28 |
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| Financial_Report.xls | 482562 | 2014-08-08 17:58:28 |
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| htld-20140630.xml | 513668 | 2014-08-08 17:58:28 |
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| htld-20140630_lab.xml | 431853 | 2014-08-08 17:58:28 |
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| htld2014q210q.htm | 725760 | 2014-08-08 17:58:28 |
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| report.css | 2740 | 2014-08-08 17:58:28 |
| Show.js | 1410 | 2014-08-08 17:58:28 |