Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-23-019041-index-headers.html | 2023-06-30 16:22:18 | |
| 0001437749-23-019041-index.html | 2023-06-30 16:22:18 | |
| 0001437749-23-019041.txt | 2023-06-30 16:22:18 | |
 0001437749-23-019041-xbrl.zip | 13276 | 2023-06-30 16:22:18 |
| ex_540605.htm | 12461 | 2023-06-30 16:22:18 |
 ex_540605img001.jpg | 6529 | 2023-06-30 16:22:18 |
| FilingSummary.xml | 1762 | 2023-06-30 16:22:18 |
| Financial_Report.xlsx | 5836 | 2023-06-30 16:22:18 |
| hpe20230630_8k.htm | 28256 | 2023-06-30 16:22:18 |
| hpe20230630_8k_htm.xml | 4221 | 2023-06-30 16:22:18 |
| hpk-20230630.xsd | 3797 | 2023-06-30 16:22:18 |
| hpk-20230630_def.xml | 13686 | 2023-06-30 16:22:18 |
| hpk-20230630_lab.xml | 17944 | 2023-06-30 16:22:18 |
| hpk-20230630_pre.xml | 13718 | 2023-06-30 16:22:18 |
| MetaLinks.json | 22417 | 2023-06-30 16:22:18 |
| R1.htm | 43977 | 2023-06-30 16:22:18 |
| report.css | 2767 | 2023-06-30 16:22:18 |
| Show.js | 1085 | 2023-06-30 16:22:18 |