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| 0001437749-20-023445-index.html | 2020-11-12 07:31:11 | |
| 0001437749-20-023445.txt | 2020-11-12 07:31:11 | |
 0001437749-20-023445-xbrl.zip | 156342 | 2020-11-12 07:31:11 |
| ex_210965.htm | 13148 | 2020-11-12 07:31:11 |
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| hpk-20200930.xml | 1032416 | 2020-11-12 07:31:11 |
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| report.css | 2767 | 2020-11-12 07:31:11 |
| Show.js | 1085 | 2020-11-12 07:31:11 |