Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0001437749-22-021260-index.html | 2022-08-24 16:05:32 | |
| 0001437749-22-021260.txt | 2022-08-24 16:05:32 | |
 0001437749-22-021260-xbrl.zip | 37045 | 2022-08-24 16:05:32 |
| ex_416290.htm | 178958 | 2022-08-24 16:05:32 |
| FilingSummary.xml | 1766 | 2022-08-24 16:05:32 |
| Financial_Report.xlsx | 5838 | 2022-08-24 16:05:32 |
| hpe20220824_8k.htm | 38555 | 2022-08-24 16:05:32 |
| hpe20220824_8k_htm.xml | 4229 | 2022-08-24 16:05:32 |
| hpk-20220822.xsd | 3983 | 2022-08-24 16:05:32 |
| hpk-20220822_def.xml | 13816 | 2022-08-24 16:05:32 |
| hpk-20220822_lab.xml | 18064 | 2022-08-24 16:05:32 |
| hpk-20220822_pre.xml | 13838 | 2022-08-24 16:05:32 |
| MetaLinks.json | 21998 | 2022-08-24 16:05:32 |
| R1.htm | 43979 | 2022-08-24 16:05:32 |
| report.css | 2767 | 2022-08-24 16:05:32 |
| Show.js | 1085 | 2022-08-24 16:05:32 |