Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-24-024646-index-headers.html | 2024-08-05 16:04:27 | |
| 0001437749-24-024646-index.html | 2024-08-05 16:04:27 | |
| 0001437749-24-024646.txt | 2024-08-05 16:04:27 | |
 0001437749-24-024646-xbrl.zip | 33417 | 2024-08-05 16:04:27 |
| ex_708632.htm | 499493 | 2024-08-05 16:04:27 |
 ex_708632img001.jpg | 6529 | 2024-08-05 16:04:27 |
| FilingSummary.xml | 1767 | 2024-08-05 16:04:27 |
| Financial_Report.xlsx | 5839 | 2024-08-05 16:04:27 |
| hpe20240729_8k.htm | 30107 | 2024-08-05 16:04:27 |
| hpe20240729_8k_htm.xml | 4622 | 2024-08-05 16:04:27 |
| hpk-20240805.xsd | 3796 | 2024-08-05 16:04:27 |
| hpk-20240805_def.xml | 13685 | 2024-08-05 16:04:27 |
| hpk-20240805_lab.xml | 17943 | 2024-08-05 16:04:27 |
| hpk-20240805_pre.xml | 13717 | 2024-08-05 16:04:27 |
| MetaLinks.json | 22301 | 2024-08-05 16:04:27 |
| R1.htm | 43982 | 2024-08-05 16:04:27 |
| report.css | 2767 | 2024-08-05 16:04:27 |
| Show.js | 1085 | 2024-08-05 16:04:27 |