Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0001437749-23-009992-index.html | 2023-04-11 16:06:08 | |
| 0001437749-23-009992.txt | 2023-04-11 16:06:08 | |
 0001437749-23-009992-xbrl.zip | 11231 | 2023-04-11 16:06:08 |
| ex_499257.htm | 3615 | 2023-04-11 16:06:08 |
| FilingSummary.xml | 1764 | 2023-04-11 16:06:08 |
| Financial_Report.xlsx | 5836 | 2023-04-11 16:06:08 |
| hpe20230410_8k.htm | 28879 | 2023-04-11 16:06:08 |
| hpe20230410_8k_htm.xml | 4230 | 2023-04-11 16:06:08 |
| hpk-20230410.xsd | 3984 | 2023-04-11 16:06:08 |
| hpk-20230410_def.xml | 13817 | 2023-04-11 16:06:08 |
| hpk-20230410_lab.xml | 18065 | 2023-04-11 16:06:08 |
| hpk-20230410_pre.xml | 13839 | 2023-04-11 16:06:08 |
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| MetaLinks.json | 22592 | 2023-04-11 16:06:08 |
| R1.htm | 43978 | 2023-04-11 16:06:08 |
| report.css | 2767 | 2023-04-11 16:06:08 |
| Show.js | 1085 | 2023-04-11 16:06:08 |