Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0001437749-22-026040-index.html | 2022-11-04 16:18:24 | |
| 0001437749-22-026040.txt | 2022-11-04 16:18:24 | |
 0001437749-22-026040-xbrl.zip | 20058 | 2022-11-04 16:18:24 |
| ex_440589.htm | 90705 | 2022-11-04 16:18:24 |
| ex_440590.htm | 5577 | 2022-11-04 16:18:24 |
| FilingSummary.xml | 1797 | 2022-11-04 16:18:24 |
| Financial_Report.xlsx | 5848 | 2022-11-04 16:18:24 |
| hpe20221101_8k.htm | 39773 | 2022-11-04 16:18:24 |
| hpe20221101_8k_htm.xml | 4316 | 2022-11-04 16:18:24 |
| hpk-20221031.xsd | 3983 | 2022-11-04 16:18:24 |
| hpk-20221031_def.xml | 14203 | 2022-11-04 16:18:24 |
| hpk-20221031_lab.xml | 18616 | 2022-11-04 16:18:24 |
| hpk-20221031_pre.xml | 14280 | 2022-11-04 16:18:24 |
| MetaLinks.json | 22519 | 2022-11-04 16:18:24 |
 pic1.jpg | 10246 | 2022-11-04 16:18:24 |
| R1.htm | 45493 | 2022-11-04 16:18:24 |
| report.css | 2767 | 2022-11-04 16:18:24 |
| Show.js | 1085 | 2022-11-04 16:18:24 |