Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-25-016120-index-headers.html | 2025-05-12 16:06:44 | |
| 0001437749-25-016120-index.html | 2025-05-12 16:06:44 | |
| 0001437749-25-016120.txt | 2025-05-12 16:06:44 | |
 0001437749-25-016120-xbrl.zip | 30660 | 2025-05-12 16:06:44 |
| ex_816307.htm | 413944 | 2025-05-12 16:06:44 |
| FilingSummary.xml | 1764 | 2025-05-12 16:06:44 |
| Financial_Report.xlsx | 5856 | 2025-05-12 16:06:44 |
| hpe20250512_8k.htm | 30119 | 2025-05-12 16:06:44 |
| hpe20250512_8k_htm.xml | 4632 | 2025-05-12 16:06:44 |
| hpk-20250512.xsd | 3967 | 2025-05-12 16:06:44 |
| hpk-20250512_def.xml | 13686 | 2025-05-12 16:06:44 |
| hpk-20250512_lab.xml | 17944 | 2025-05-12 16:06:44 |
| hpk-20250512_pre.xml | 13718 | 2025-05-12 16:06:44 |
 image1.jpg | 10627 | 2025-05-12 16:06:44 |
| MetaLinks.json | 28419 | 2025-05-12 16:06:44 |
| R1.htm | 43960 | 2025-05-12 16:06:44 |
| report.css | 2767 | 2025-05-12 16:06:44 |
| Show.js | 1085 | 2025-05-12 16:06:44 |