Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-23-005581-index-headers.html | 2023-03-07 06:30:36 | |
| 0001437749-23-005581-index.html | 2023-03-07 06:30:36 | |
| 0001437749-23-005581.txt | 2023-03-07 06:30:36 | |
 0001437749-23-005581-xbrl.zip | 11124 | 2023-03-07 06:30:36 |
| ex_484617.htm | 16015 | 2023-03-07 06:30:36 |
| FilingSummary.xml | 1767 | 2023-03-07 06:30:36 |
| Financial_Report.xlsx | 5839 | 2023-03-07 06:30:36 |
| hpe20230303b_8k.htm | 30398 | 2023-03-07 06:30:36 |
| hpe20230303b_8k_htm.xml | 4229 | 2023-03-07 06:30:36 |
| hpk-20230307.xsd | 3982 | 2023-03-07 06:30:36 |
| hpk-20230307_def.xml | 13815 | 2023-03-07 06:30:36 |
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| R1.htm | 43979 | 2023-03-07 06:30:36 |
| report.css | 2767 | 2023-03-07 06:30:36 |
| Show.js | 1085 | 2023-03-07 06:30:36 |
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