Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-22-077348-index-headers.html | 2022-03-16 17:16:04 | |
| 0001193125-22-077348-index.html | 2022-03-16 17:16:04 | |
| 0001193125-22-077348.txt | 2022-03-16 17:16:04 | |
 0001193125-22-077348-xbrl.zip | 44747 | 2022-03-16 17:16:04 |
| d332220d8ka.htm | 31571 | 2022-03-16 17:16:04 |
| d332220d8ka_htm.xml | 4629 | 2022-03-16 17:16:04 |
| d332220dex101.htm | 26699 | 2022-03-16 17:16:04 |
| d332220dex231.htm | 1621 | 2022-03-16 17:16:04 |
| d332220dex991.htm | 161627 | 2022-03-16 17:16:04 |
| d332220dex992.htm | 188972 | 2022-03-16 17:16:04 |
| FilingSummary.xml | 1847 | 2022-03-16 17:16:04 |
| Financial_Report.xlsx | 6223 | 2022-03-16 17:16:04 |
 g332220g31j56.jpg | 4974 | 2022-03-16 17:16:04 |
 g332220g51n36.jpg | 9537 | 2022-03-16 17:16:04 |
 g332220g67m96.jpg | 55508 | 2022-03-16 17:16:04 |
 g332220g81g21.jpg | 4174 | 2022-03-16 17:16:04 |
| hep-20220314.xsd | 2873 | 2022-03-16 17:16:04 |
| hep-20220314_lab.xml | 18703 | 2022-03-16 17:16:04 |
| hep-20220314_pre.xml | 11708 | 2022-03-16 17:16:04 |
| MetaLinks.json | 19035 | 2022-03-16 17:16:04 |
| R1.htm | 42766 | 2022-03-16 17:16:04 |
| report.css | 2767 | 2022-03-16 17:16:04 |
| Show.js | 1085 | 2022-03-16 17:16:04 |