Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-22-005478-index-headers.html | 2022-03-08 07:09:09 | |
| 0001437749-22-005478-index.html | 2022-03-08 07:09:09 | |
| 0001437749-22-005478.txt | 2022-03-08 07:09:09 | |
 0001437749-22-005478-xbrl.zip | 11024 | 2022-03-08 07:09:09 |
| ex_343891.htm | 13885 | 2022-03-08 07:09:09 |
| FilingSummary.xml | 1767 | 2022-03-08 07:09:09 |
| Financial_Report.xlsx | 5794 | 2022-03-08 07:09:09 |
| hpe20220307_8k.htm | 30144 | 2022-03-08 07:09:09 |
| hpe20220307_8k_htm.xml | 4229 | 2022-03-08 07:09:09 |
| hpk-20220308.xsd | 3982 | 2022-03-08 07:09:09 |
| hpk-20220308_def.xml | 13815 | 2022-03-08 07:09:09 |
| hpk-20220308_lab.xml | 18063 | 2022-03-08 07:09:09 |
| hpk-20220308_pre.xml | 13837 | 2022-03-08 07:09:09 |
| MetaLinks.json | 21883 | 2022-03-08 07:09:09 |
| R1.htm | 44528 | 2022-03-08 07:09:09 |
| report.css | 2767 | 2022-03-08 07:09:09 |
| Show.js | 1085 | 2022-03-08 07:09:09 |
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