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|---|---|---|
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| 0000799233-10-000036-index.html | 2010-08-06 11:19:14 | |
| 0000799233-10-000036.txt | 2010-08-06 11:19:14 | |
 0000799233-10-000036-xbrl.zip | 75456 | 2010-08-06 11:19:14 |
| defnref.xml | 24081 | 2010-08-06 11:19:14 |
| exhibit3112010q2.htm | 21058 | 2010-08-06 11:19:14 |
| exhibit3122010q2.htm | 23263 | 2010-08-06 11:19:14 |
| exhibit3212010q2.htm | 7294 | 2010-08-06 11:19:14 |
| exhibit3222010q2.htm | 7955 | 2010-08-06 11:19:14 |
| FilingSummary.xml | 13109 | 2010-08-06 11:19:14 |
| Financial_Report.xls | 257183 | 2010-08-06 11:19:14 |
| htld-20100630.xml | 287676 | 2010-08-06 11:19:14 |
| htld-20100630.xsd | 16114 | 2010-08-06 11:19:14 |
| htld-20100630_cal.xml | 42672 | 2010-08-06 11:19:14 |
| htld-20100630_def.xml | 108426 | 2010-08-06 11:19:14 |
| htld-20100630_lab.xml | 237308 | 2010-08-06 11:19:14 |
| htld-20100630_pre.xml | 137812 | 2010-08-06 11:19:14 |
| june30201010q.htm | 697973 | 2010-08-06 11:19:14 |
| R1.xml | 136493 | 2010-08-06 11:19:14 |
| R10.xml | 10333 | 2010-08-06 11:19:14 |
| R11.xml | 179835 | 2010-08-06 11:19:14 |
| R12.xml | 34341 | 2010-08-06 11:19:14 |
| R13.xml | 10130 | 2010-08-06 11:19:14 |
| R14.xml | 8441 | 2010-08-06 11:19:14 |
| R15.xml | 11219 | 2010-08-06 11:19:14 |
| R16.xml | 19665 | 2010-08-06 11:19:14 |
| R17.xml | 9771 | 2010-08-06 11:19:14 |
| R18.xml | 8870 | 2010-08-06 11:19:14 |
| R19.xml | 40357 | 2010-08-06 11:19:14 |
| R2.xml | 31444 | 2010-08-06 11:19:14 |
| R3.xml | 94863 | 2010-08-06 11:19:14 |
| R4.xml | 45418 | 2010-08-06 11:19:14 |
| R5.xml | 12260 | 2010-08-06 11:19:14 |
| R6.xml | 104767 | 2010-08-06 11:19:14 |
| R7.xml | 10756 | 2010-08-06 11:19:14 |
| R8.xml | 9546 | 2010-08-06 11:19:14 |
| R9.xml | 9319 | 2010-08-06 11:19:14 |