Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-22-026977-index-headers.html | 2022-11-10 17:23:53 | |
| 0001437749-22-026977-index.html | 2022-11-10 17:23:53 | |
| 0001437749-22-026977.txt | 2022-11-10 17:23:53 | |
 0001437749-22-026977-xbrl.zip | 260787 | 2022-11-10 17:23:53 |
| ex_445480.htm | 986956 | 2022-11-10 17:23:53 |
| ex_445481.htm | 1031519 | 2022-11-10 17:23:53 |
| FilingSummary.xml | 1797 | 2022-11-10 17:23:53 |
| Financial_Report.xlsx | 5851 | 2022-11-10 17:23:53 |
| hpe20221109_8k.htm | 40902 | 2022-11-10 17:23:53 |
| hpe20221109_8k_htm.xml | 4316 | 2022-11-10 17:23:53 |
| hpk-20221108.xsd | 3985 | 2022-11-10 17:23:53 |
| hpk-20221108_def.xml | 14205 | 2022-11-10 17:23:53 |
| hpk-20221108_lab.xml | 18618 | 2022-11-10 17:23:53 |
| hpk-20221108_pre.xml | 14282 | 2022-11-10 17:23:53 |
| MetaLinks.json | 22403 | 2022-11-10 17:23:53 |
| R1.htm | 45494 | 2022-11-10 17:23:53 |
| report.css | 2767 | 2022-11-10 17:23:53 |
| Show.js | 1085 | 2022-11-10 17:23:53 |