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| 0001437749-22-018939-index.html | 2022-08-04 17:15:46 | |
| 0001437749-22-018939.txt | 2022-08-04 17:15:46 | |
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| ex_406245.htm | 44165 | 2022-08-04 17:15:46 |
| ex_406483.htm | 70184 | 2022-08-04 17:15:46 |
| FilingSummary.xml | 1851 | 2022-08-04 17:15:46 |
| Financial_Report.xlsx | 5699 | 2022-08-04 17:15:46 |
| hnrg-20220729.xsd | 3600 | 2022-08-04 17:15:46 |
| hnrg-20220729_def.xml | 11531 | 2022-08-04 17:15:46 |
| hnrg-20220729_lab.xml | 15413 | 2022-08-04 17:15:46 |
| hnrg-20220729_pre.xml | 11687 | 2022-08-04 17:15:46 |
| hnrg20220802_8k.htm | 35291 | 2022-08-04 17:15:46 |
| hnrg20220802_8k_htm.xml | 2563 | 2022-08-04 17:15:46 |
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| R1.htm | 38801 | 2022-08-04 17:15:46 |
| report.css | 2767 | 2022-08-04 17:15:46 |
| Show.js | 1085 | 2022-08-04 17:15:46 |