Parent Directory| Name | Size | Last Modified |
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| 0001437749-23-000668-index.html | 2023-01-06 16:58:00 | |
| 0001437749-23-000668.txt | 2023-01-06 16:58:00 | |
 0001437749-23-000668-xbrl.zip | 82123 | 2023-01-06 16:58:00 |
| ex_461356.htm | 331568 | 2023-01-06 16:58:00 |
| ex_461357.htm | 221726 | 2023-01-06 16:58:00 |
| ex_461611.htm | 3194 | 2023-01-06 16:58:00 |
| ex_461721.htm | 585431 | 2023-01-06 16:58:00 |
| FilingSummary.xml | 1918 | 2023-01-06 16:58:00 |
| Financial_Report.xlsx | 5737 | 2023-01-06 16:58:00 |
| hnrg-20221021.xsd | 3600 | 2023-01-06 16:58:00 |
| hnrg-20221021_def.xml | 11903 | 2023-01-06 16:58:00 |
| hnrg-20221021_lab.xml | 15928 | 2023-01-06 16:58:00 |
| hnrg-20221021_pre.xml | 12114 | 2023-01-06 16:58:00 |
| hnrg20221220_8ka.htm | 34324 | 2023-01-06 16:58:00 |
| hnrg20221220_8ka_htm.xml | 2695 | 2023-01-06 16:58:00 |
 logo.jpg | 3779 | 2023-01-06 16:58:00 |
| MetaLinks.json | 19963 | 2023-01-06 16:58:00 |
| R1.htm | 39870 | 2023-01-06 16:58:00 |
| report.css | 2767 | 2023-01-06 16:58:00 |
| Show.js | 1085 | 2023-01-06 16:58:00 |