Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-23-010832-index-headers.html | 2023-04-21 17:22:36 | |
| 0001437749-23-010832-index.html | 2023-04-21 17:22:36 | |
| 0001437749-23-010832.txt | 2023-04-21 17:22:36 | |
 0001437749-23-010832-xbrl.zip | 10165 | 2023-04-21 17:22:36 |
| FilingSummary.xml | 1733 | 2023-04-21 17:22:36 |
| Financial_Report.xlsx | 5838 | 2023-04-21 17:22:36 |
| hpe20230421_8k.htm | 28497 | 2023-04-21 17:22:36 |
| hpe20230421_8k_htm.xml | 4234 | 2023-04-21 17:22:36 |
| hpk-20230420.xsd | 3983 | 2023-04-21 17:22:36 |
| hpk-20230420_def.xml | 13816 | 2023-04-21 17:22:36 |
| hpk-20230420_lab.xml | 18064 | 2023-04-21 17:22:36 |
| hpk-20230420_pre.xml | 13838 | 2023-04-21 17:22:36 |
| MetaLinks.json | 22592 | 2023-04-21 17:22:36 |
| R1.htm | 43982 | 2023-04-21 17:22:36 |
| report.css | 2767 | 2023-04-21 17:22:36 |
| Show.js | 1084 | 2023-04-21 17:22:36 |