Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0001437749-23-013752-index.html | 2023-05-11 06:30:21 | |
| 0001437749-23-013752.txt | 2023-05-11 06:30:21 | |
 0001437749-23-013752-xbrl.zip | 10990 | 2023-05-11 06:30:21 |
| ex_518468.htm | 15409 | 2023-05-11 06:30:21 |
| FilingSummary.xml | 1767 | 2023-05-11 06:30:21 |
| Financial_Report.xlsx | 5835 | 2023-05-11 06:30:21 |
| hpe20230508c_8k.htm | 30098 | 2023-05-11 06:30:21 |
| hpe20230508c_8k_htm.xml | 4229 | 2023-05-11 06:30:21 |
| hpk-20230511.xsd | 3984 | 2023-05-11 06:30:21 |
| hpk-20230511_def.xml | 13817 | 2023-05-11 06:30:21 |
| hpk-20230511_lab.xml | 18065 | 2023-05-11 06:30:21 |
| hpk-20230511_pre.xml | 13839 | 2023-05-11 06:30:21 |
| MetaLinks.json | 22480 | 2023-05-11 06:30:21 |
| R1.htm | 43976 | 2023-05-11 06:30:21 |
| report.css | 2767 | 2023-05-11 06:30:21 |
| Show.js | 1085 | 2023-05-11 06:30:21 |
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