Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-23-016414-index-headers.html | 2023-06-02 06:31:11 | |
| 0001437749-23-016414-index.html | 2023-06-02 06:31:11 | |
| 0001437749-23-016414.txt | 2023-06-02 06:31:11 | |
 0001437749-23-016414-xbrl.zip | 19409 | 2023-06-02 06:31:11 |
| ex_528908.htm | 41190 | 2023-06-02 06:31:11 |
| FilingSummary.xml | 1764 | 2023-06-02 06:31:11 |
| Financial_Report.xlsx | 5870 | 2023-06-02 06:31:11 |
| hpe20230601_8k.htm | 43390 | 2023-06-02 06:31:11 |
| hpe20230601_8k_htm.xml | 4323 | 2023-06-02 06:31:11 |
| hpk-20230601.xsd | 3982 | 2023-06-02 06:31:11 |
| hpk-20230601_def.xml | 14199 | 2023-06-02 06:31:11 |
| hpk-20230601_lab.xml | 18605 | 2023-06-02 06:31:11 |
| hpk-20230601_pre.xml | 14276 | 2023-06-02 06:31:11 |
| MetaLinks.json | 23108 | 2023-06-02 06:31:11 |
| R1.htm | 45495 | 2023-06-02 06:31:11 |
| report.css | 2767 | 2023-06-02 06:31:11 |
| Show.js | 1085 | 2023-06-02 06:31:11 |