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|---|---|---|
 0000799233-11-000008-index-headers.html | 2011-02-23 17:28:36 | |
| 0000799233-11-000008-index.html | 2011-02-23 17:28:36 | |
| 0000799233-11-000008.txt | 2011-02-23 17:28:36 | |
 0000799233-11-000008-xbrl.zip | 82542 | 2011-02-23 17:28:36 |
| defnref.xml | 24665 | 2011-02-23 17:28:36 |
| exhibit3112010q4.htm | 23277 | 2011-02-23 17:28:36 |
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| exhibit3212010q4.htm | 7044 | 2011-02-23 17:28:36 |
| exhibit3222010q4.htm | 7954 | 2011-02-23 17:28:36 |
| exhibitno21.htm | 6992 | 2011-02-23 17:28:36 |
| FilingSummary.xml | 16477 | 2011-02-23 17:28:36 |
| Financial_Report.xls | 402413 | 2011-02-23 17:28:36 |
| htld-20101231.xml | 477433 | 2011-02-23 17:28:36 |
| htld-20101231.xsd | 17637 | 2011-02-23 17:28:36 |
| htld-20101231_cal.xml | 45054 | 2011-02-23 17:28:36 |
| htld-20101231_def.xml | 101366 | 2011-02-23 17:28:36 |
| htld-20101231_lab.xml | 220445 | 2011-02-23 17:28:36 |
| htld-20101231_pre.xml | 123659 | 2011-02-23 17:28:36 |
| htld201010k.htm | 1334451 | 2011-02-23 17:28:36 |
| R1.xml | 50110 | 2011-02-23 17:28:36 |
| R10.xml | 166292 | 2011-02-23 17:28:36 |
| R11.xml | 19036 | 2011-02-23 17:28:36 |
| R12.xml | 126872 | 2011-02-23 17:28:36 |
| R13.xml | 9956 | 2011-02-23 17:28:36 |
| R14.xml | 11979 | 2011-02-23 17:28:36 |
| R15.xml | 13342 | 2011-02-23 17:28:36 |
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| R17.xml | 9524 | 2011-02-23 17:28:36 |
| R18.xml | 58289 | 2011-02-23 17:28:36 |
| R19.xml | 8530 | 2011-02-23 17:28:36 |
| R2.xml | 121791 | 2011-02-23 17:28:36 |
| R3.xml | 23976 | 2011-02-23 17:28:36 |
| R4.xml | 71833 | 2011-02-23 17:28:36 |
| R5.xml | 107856 | 2011-02-23 17:28:36 |
| R6.xml | 9650 | 2011-02-23 17:28:36 |
| R7.xml | 109441 | 2011-02-23 17:28:36 |
| R8.xml | 40788 | 2011-02-23 17:28:36 |
| R9.xml | 10373 | 2011-02-23 17:28:36 |