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| 0001193125-22-096886.txt | 2022-04-06 08:30:56 | |
 0001193125-22-096886-xbrl.zip | 14548 | 2022-04-06 08:30:56 |
| d303133d8k.htm | 31425 | 2022-04-06 08:30:56 |
| d303133d8k_htm.xml | 3381 | 2022-04-06 08:30:56 |
| d303133dex991.htm | 11514 | 2022-04-06 08:30:56 |
| FilingSummary.xml | 1734 | 2022-04-06 08:30:56 |
| Financial_Report.xlsx | 5692 | 2022-04-06 08:30:56 |
| hep-20220406.xsd | 2871 | 2022-04-06 08:30:56 |
| hep-20220406_lab.xml | 17994 | 2022-04-06 08:30:56 |
| hep-20220406_pre.xml | 11272 | 2022-04-06 08:30:56 |
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| R1.htm | 40252 | 2022-04-06 08:30:56 |
| report.css | 2767 | 2022-04-06 08:30:56 |
| Show.js | 1084 | 2022-04-06 08:30:56 |