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| 0000799233-18-000036.txt | 2018-08-08 18:56:16 | |
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| exhibit3112018q2.htm | 23572 | 2018-08-08 18:56:16 |
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| Financial_Report.xlsx | 55640 | 2018-08-08 18:56:16 |
| htld-20180630.xsd | 33413 | 2018-08-08 18:56:16 |
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| report.css | 2767 | 2018-08-08 18:56:16 |
| Show.js | 1410 | 2018-08-08 18:56:16 |