Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-23-025960-index-headers.html | 2023-09-15 07:30:20 | |
| 0001437749-23-025960-index.html | 2023-09-15 07:30:20 | |
| 0001437749-23-025960.txt | 2023-09-15 07:30:20 | |
 0001437749-23-025960-xbrl.zip | 209578 | 2023-09-15 07:30:20 |
| ex_569247.htm | 1000001 | 2023-09-15 07:30:20 |
| ex_569248.htm | 420708 | 2023-09-15 07:30:20 |
| ex_570006.htm | 37168 | 2023-09-15 07:30:20 |
 ex_570006img001.jpg | 6529 | 2023-09-15 07:30:20 |
| FilingSummary.xml | 1824 | 2023-09-15 07:30:20 |
| Financial_Report.xlsx | 5852 | 2023-09-15 07:30:20 |
| hpe20230912_8k.htm | 45048 | 2023-09-15 07:30:20 |
| hpe20230912_8k_htm.xml | 4308 | 2023-09-15 07:30:20 |
| hpk-20230912.xsd | 3798 | 2023-09-15 07:30:20 |
| hpk-20230912_def.xml | 14070 | 2023-09-15 07:30:20 |
| hpk-20230912_lab.xml | 18493 | 2023-09-15 07:30:20 |
| hpk-20230912_pre.xml | 14157 | 2023-09-15 07:30:20 |
| MetaLinks.json | 22936 | 2023-09-15 07:30:20 |
| R1.htm | 45492 | 2023-09-15 07:30:20 |
| report.css | 2767 | 2023-09-15 07:30:20 |
| Show.js | 1085 | 2023-09-15 07:30:20 |