Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-23-020149-index-headers.html | 2023-07-18 16:06:07 | |
| 0001437749-23-020149-index.html | 2023-07-18 16:06:07 | |
| 0001437749-23-020149.txt | 2023-07-18 16:06:07 | |
 0001437749-23-020149-xbrl.zip | 27456 | 2023-07-18 16:06:07 |
| ex_543301.htm | 9324 | 2023-07-18 16:06:07 |
 ex_543301img001.jpg | 6154 | 2023-07-18 16:06:07 |
| ex_543824.htm | 147755 | 2023-07-18 16:06:07 |
| FilingSummary.xml | 1793 | 2023-07-18 16:06:07 |
| Financial_Report.xlsx | 5838 | 2023-07-18 16:06:07 |
| hpe20230712_8k.htm | 44478 | 2023-07-18 16:06:07 |
| hpe20230712_8k_htm.xml | 4221 | 2023-07-18 16:06:07 |
| hpk-20230712.xsd | 3797 | 2023-07-18 16:06:07 |
| hpk-20230712_def.xml | 13686 | 2023-07-18 16:06:07 |
| hpk-20230712_lab.xml | 17944 | 2023-07-18 16:06:07 |
| hpk-20230712_pre.xml | 13718 | 2023-07-18 16:06:07 |
| MetaLinks.json | 22301 | 2023-07-18 16:06:07 |
| R1.htm | 43977 | 2023-07-18 16:06:07 |
| report.css | 2767 | 2023-07-18 16:06:07 |
| Show.js | 1085 | 2023-07-18 16:06:07 |