Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-25-029107-index-headers.html | 2025-09-16 06:30:15 | |
| 0001437749-25-029107-index.html | 2025-09-16 06:30:15 | |
| 0001437749-25-029107.txt | 2025-09-16 06:30:15 | |
 0001437749-25-029107-xbrl.zip | 30059 | 2025-09-16 06:30:15 |
| ex_861643.htm | 81036 | 2025-09-16 06:30:15 |
| ex_861644.htm | 9551 | 2025-09-16 06:30:15 |
| FilingSummary.xml | 1751 | 2025-09-16 06:30:15 |
| hpe20250915c_8k.htm | 46628 | 2025-09-16 06:30:15 |
| hpe20250915c_8k_htm.xml | 2945 | 2025-09-16 06:30:15 |
| hpk-20250915.xsd | 3572 | 2025-09-16 06:30:15 |
| hpk-20250915_def.xml | 11802 | 2025-09-16 06:30:15 |
| hpk-20250915_lab.xml | 15849 | 2025-09-16 06:30:15 |
| hpk-20250915_pre.xml | 12017 | 2025-09-16 06:30:15 |
 logobig.jpg | 22372 | 2025-09-16 06:30:15 |
| MetaLinks.json | 26239 | 2025-09-16 06:30:15 |
| R1.htm | 40079 | 2025-09-16 06:30:15 |
| report.css | 2767 | 2025-09-16 06:30:15 |
| Show.js | 1085 | 2025-09-16 06:30:15 |