Parent Directory| Name | Size | Last Modified |
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| 0001437749-25-006827-index.html | 2025-03-10 16:02:29 | |
| 0001437749-25-006827.txt | 2025-03-10 16:02:29 | |
 0001437749-25-006827-xbrl.zip | 37052 | 2025-03-10 16:02:29 |
| ex_787782.htm | 571663 | 2025-03-10 16:02:29 |
| FilingSummary.xml | 1769 | 2025-03-10 16:02:29 |
| Financial_Report.xlsx | 5849 | 2025-03-10 16:02:29 |
| hpe20250307c_8k.htm | 29934 | 2025-03-10 16:02:29 |
| hpe20250307c_8k_htm.xml | 4721 | 2025-03-10 16:02:29 |
| hpk-20250310.xsd | 3797 | 2025-03-10 16:02:29 |
| hpk-20250310_def.xml | 14069 | 2025-03-10 16:02:29 |
| hpk-20250310_lab.xml | 18492 | 2025-03-10 16:02:29 |
| hpk-20250310_pre.xml | 14156 | 2025-03-10 16:02:29 |
 logobig.jpg | 22372 | 2025-03-10 16:02:29 |
| MetaLinks.json | 22940 | 2025-03-10 16:02:29 |
| R1.htm | 45493 | 2025-03-10 16:02:29 |
| report.css | 2767 | 2025-03-10 16:02:29 |
| Show.js | 1085 | 2025-03-10 16:02:29 |