Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-23-017124-index-headers.html | 2023-06-12 16:02:22 | |
| 0001437749-23-017124-index.html | 2023-06-12 16:02:22 | |
| 0001437749-23-017124.txt | 2023-06-12 16:02:22 | |
 0001437749-23-017124-xbrl.zip | 28467 | 2023-06-12 16:02:22 |
| ex_531928.htm | 9219 | 2023-06-12 16:02:22 |
 ex_531928img001.jpg | 6529 | 2023-06-12 16:02:22 |
| ex_532011.htm | 263041 | 2023-06-12 16:02:22 |
| FilingSummary.xml | 1795 | 2023-06-12 16:02:22 |
| Financial_Report.xlsx | 5838 | 2023-06-12 16:02:22 |
| hpe20230609_8k.htm | 38453 | 2023-06-12 16:02:22 |
| hpe20230609_8k_htm.xml | 4229 | 2023-06-12 16:02:22 |
| hpk-20230612.xsd | 3983 | 2023-06-12 16:02:22 |
| hpk-20230612_def.xml | 13816 | 2023-06-12 16:02:22 |
| hpk-20230612_lab.xml | 18064 | 2023-06-12 16:02:22 |
| hpk-20230612_pre.xml | 13838 | 2023-06-12 16:02:22 |
| MetaLinks.json | 22592 | 2023-06-12 16:02:22 |
| R1.htm | 43977 | 2023-06-12 16:02:22 |
| report.css | 2767 | 2023-06-12 16:02:22 |
| Show.js | 1085 | 2023-06-12 16:02:22 |