Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-25-024452-index-headers.html | 2025-08-04 06:01:33 | |
| 0001437749-25-024452-index.html | 2025-08-04 06:01:33 | |
| 0001437749-25-024452.txt | 2025-08-04 06:01:33 | |
 0001437749-25-024452-xbrl.zip | 40439 | 2025-08-04 06:01:33 |
| ex_847112.htm | 79435 | 2025-08-04 06:01:33 |
| ex_847113.htm | 86409 | 2025-08-04 06:01:33 |
| ex_847193.htm | 124966 | 2025-08-04 06:01:33 |
| FilingSummary.xml | 1764 | 2025-08-04 06:01:33 |
| hpe20250801_8k.htm | 41234 | 2025-08-04 06:01:33 |
| hpe20250801_8k_htm.xml | 4731 | 2025-08-04 06:01:33 |
| hpk-20250801.xsd | 3966 | 2025-08-04 06:01:33 |
| hpk-20250801_def.xml | 14068 | 2025-08-04 06:01:33 |
| hpk-20250801_lab.xml | 18491 | 2025-08-04 06:01:33 |
| hpk-20250801_pre.xml | 14155 | 2025-08-04 06:01:33 |
 image1.jpg | 10627 | 2025-08-04 06:01:33 |
| MetaLinks.json | 28822 | 2025-08-04 06:01:33 |
| R1.htm | 45477 | 2025-08-04 06:01:33 |
| report.css | 2767 | 2025-08-04 06:01:33 |
| Show.js | 1085 | 2025-08-04 06:01:33 |