Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-23-000868-index-headers.html | 2023-01-11 16:02:43 | |
| 0001437749-23-000868-index.html | 2023-01-11 16:02:43 | |
| 0001437749-23-000868.txt | 2023-01-11 16:02:43 | |
 0001437749-23-000868-xbrl.zip | 11268 | 2023-01-11 16:02:43 |
| ex_462518.htm | 4150 | 2023-01-11 16:02:43 |
| FilingSummary.xml | 1764 | 2023-01-11 16:02:43 |
| Financial_Report.xlsx | 5835 | 2023-01-11 16:02:43 |
| hpe20230109_8k.htm | 30141 | 2023-01-11 16:02:43 |
| hpe20230109_8k_htm.xml | 4230 | 2023-01-11 16:02:43 |
| hpk-20230110.xsd | 3983 | 2023-01-11 16:02:43 |
| hpk-20230110_def.xml | 13816 | 2023-01-11 16:02:43 |
| hpk-20230110_lab.xml | 18064 | 2023-01-11 16:02:43 |
| hpk-20230110_pre.xml | 13838 | 2023-01-11 16:02:43 |
 lglogo.jpg | 14253 | 2023-01-11 16:02:43 |
| MetaLinks.json | 22592 | 2023-01-11 16:02:43 |
| R1.htm | 43978 | 2023-01-11 16:02:43 |
| report.css | 2767 | 2023-01-11 16:02:43 |
| Show.js | 1085 | 2023-01-11 16:02:43 |