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| 0000799233-10-000058-index.html | 2010-11-05 17:22:20 | |
| 0000799233-10-000058.txt | 2010-11-05 17:22:20 | |
 0000799233-10-000058-xbrl.zip | 74195 | 2010-11-05 17:22:20 |
| defnref.xml | 24276 | 2010-11-05 17:22:20 |
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| exhibit3222010q3.htm | 7801 | 2010-11-05 17:22:20 |
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| htld-20100930.xsd | 16114 | 2010-11-05 17:22:20 |
| htld-20100930_cal.xml | 46181 | 2010-11-05 17:22:20 |
| htld-20100930_def.xml | 114642 | 2010-11-05 17:22:20 |
| htld-20100930_lab.xml | 239473 | 2010-11-05 17:22:20 |
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| R10.xml | 9319 | 2010-11-05 17:22:20 |
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| R18.xml | 9958 | 2010-11-05 17:22:20 |
| R19.xml | 9046 | 2010-11-05 17:22:20 |
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| R5.xml | 45422 | 2010-11-05 17:22:20 |
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| R7.xml | 104799 | 2010-11-05 17:22:20 |
| R8.xml | 10900 | 2010-11-05 17:22:20 |
| R9.xml | 10105 | 2010-11-05 17:22:20 |
| september30201010q.htm | 636819 | 2010-11-05 17:22:20 |