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| 0001437749-23-022313-index.html | 2023-08-07 16:02:58 | |
| 0001437749-23-022313.txt | 2023-08-07 16:02:58 | |
 0001437749-23-022313-xbrl.zip | 28762 | 2023-08-07 16:02:58 |
| ex_555042.htm | 357640 | 2023-08-07 16:02:58 |
| FilingSummary.xml | 1762 | 2023-08-07 16:02:58 |
| Financial_Report.xlsx | 5840 | 2023-08-07 16:02:58 |
| hpe20230804_8k.htm | 31087 | 2023-08-07 16:02:58 |
| hpe20230804_8k_htm.xml | 4222 | 2023-08-07 16:02:58 |
| hpk-20230807.xsd | 3796 | 2023-08-07 16:02:58 |
| hpk-20230807_def.xml | 13685 | 2023-08-07 16:02:58 |
| hpk-20230807_lab.xml | 17943 | 2023-08-07 16:02:58 |
| hpk-20230807_pre.xml | 13717 | 2023-08-07 16:02:58 |
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| MetaLinks.json | 22417 | 2023-08-07 16:02:58 |
| R1.htm | 43979 | 2023-08-07 16:02:58 |
| report.css | 2767 | 2023-08-07 16:02:58 |
| Show.js | 1085 | 2023-08-07 16:02:58 |