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| 0000799233-14-000039-index.html | 2014-05-12 16:36:45 | |
| 0000799233-14-000039.txt | 2014-05-12 16:36:45 | |
 0000799233-14-000039-xbrl.zip | 102600 | 2014-05-12 16:36:45 |
| exhibit3112014q1.htm | 23559 | 2014-05-12 16:36:45 |
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| exhibit3212014q1.htm | 9725 | 2014-05-12 16:36:45 |
| exhibit3222014q1.htm | 10612 | 2014-05-12 16:36:45 |
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| Financial_Report.xls | 370921 | 2014-05-12 16:36:45 |
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| htld-20140331.xml | 376422 | 2014-05-12 16:36:45 |
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| report.css | 2740 | 2014-05-12 16:36:45 |
| Show.js | 1410 | 2014-05-12 16:36:45 |