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|---|---|---|
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| 0000799233-11-000034-index.html | 2011-08-08 15:55:04 | |
| 0000799233-11-000034.txt | 2011-08-08 15:55:04 | |
 0000799233-11-000034-xbrl.zip | 105508 | 2011-08-08 15:55:04 |
| exhibit3112011q2.htm | 23652 | 2011-08-08 15:55:04 |
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| exhibit3212011q2.htm | 7364 | 2011-08-08 15:55:04 |
| exhibit3222011q2.htm | 8248 | 2011-08-08 15:55:04 |
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| Financial_Report.xls | 433435 | 2011-08-08 15:55:04 |
| htld-20110630.xml | 470258 | 2011-08-08 15:55:04 |
| htld-20110630.xsd | 27371 | 2011-08-08 15:55:04 |
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| htld-20110630_lab.xml | 376413 | 2011-08-08 15:55:04 |
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| htld2011q210q.htm | 680322 | 2011-08-08 15:55:04 |
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| report.css | 2721 | 2011-08-08 15:55:04 |
| Show.js | 6423 | 2011-08-08 15:55:04 |