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| 0001437749-24-024963-index.html | 2024-08-06 17:31:29 | |
| 0001437749-24-024963.txt | 2024-08-06 17:31:29 | |
 0001437749-24-024963-xbrl.zip | 33338 | 2024-08-06 17:31:29 |
| ex_687455.htm | 511323 | 2024-08-06 17:31:29 |
| FilingSummary.xml | 1807 | 2024-08-06 17:31:29 |
| Financial_Report.xlsx | 5701 | 2024-08-06 17:31:29 |
| hnrg-20240806.xsd | 3408 | 2024-08-06 17:31:29 |
| hnrg-20240806_def.xml | 11423 | 2024-08-06 17:31:29 |
| hnrg-20240806_lab.xml | 15309 | 2024-08-06 17:31:29 |
| hnrg-20240806_pre.xml | 11583 | 2024-08-06 17:31:29 |
| hnrg20240612_8k.htm | 25939 | 2024-08-06 17:31:29 |
| hnrg20240612_8k_htm.xml | 2838 | 2024-08-06 17:31:29 |
 logo.jpg | 3779 | 2024-08-06 17:31:29 |
| MetaLinks.json | 19330 | 2024-08-06 17:31:29 |
| R1.htm | 38353 | 2024-08-06 17:31:29 |
| report.css | 2767 | 2024-08-06 17:31:29 |
| Show.js | 1085 | 2024-08-06 17:31:29 |