Parent Directory| Name | Size | Last Modified |
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| 0000046765-20-000010-index.html | 2020-04-30 17:14:46 | |
| 0000046765-20-000010.txt | 2020-04-30 17:14:46 | |
 0000046765-20-000010-xbrl.zip | 44530 | 2020-04-30 17:14:46 |
| a8kcoverq2fy2020.htm | 41196 | 2020-04-30 17:14:46 |
| a8kcoverq2fy2020_htm.xml | 4757 | 2020-04-30 17:14:46 |
| FilingSummary.xml | 1730 | 2020-04-30 17:14:46 |
| Financial_Report.xlsx | 5821 | 2020-04-30 17:14:46 |
| hp-20200430.xsd | 4425 | 2020-04-30 17:14:46 |
| hp-20200430_cal.xml | 612 | 2020-04-30 17:14:46 |
| hp-20200430_def.xml | 1462 | 2020-04-30 17:14:46 |
| hp-20200430_lab.xml | 26142 | 2020-04-30 17:14:46 |
| hp-20200430_pre.xml | 13568 | 2020-04-30 17:14:46 |
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 letterheadlogo.jpg | 59410 | 2020-04-30 17:14:46 |
| MetaLinks.json | 18235 | 2020-04-30 17:14:46 |
| q2fy20earningsrelease.htm | 804870 | 2020-04-30 17:14:46 |
| R1.htm | 39635 | 2020-04-30 17:14:46 |
| report.css | 2767 | 2020-04-30 17:14:46 |
| Show.js | 1085 | 2020-04-30 17:14:46 |