Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000788965-26-000002-index-headers.html | 2026-06-05 16:23:39 | |
| 0000788965-26-000002-index.html | 2026-06-05 16:23:39 | |
| 0000788965-26-000002.txt | 2026-06-05 16:23:39 | |
 0000788965-26-000002-xbrl.zip | 17087 | 2026-06-05 16:23:39 |
| FilingSummary.xml | 1832 | 2026-06-05 16:23:39 |
| hnrg-20260604.xsd | 3528 | 2026-06-05 16:23:39 |
| hnrg-20260604x8k.htm | 42694 | 2026-06-05 16:23:39 |
 hnrg-20260604x8k001.jpg | 3186 | 2026-06-05 16:23:39 |
| hnrg-20260604x8k_htm.xml | 4608 | 2026-06-05 16:23:39 |
| hnrg-20260604xex99d1.htm | 13917 | 2026-06-05 16:23:39 |
 hnrg-20260604xex99d1001.jpg | 7594 | 2026-06-05 16:23:39 |
| hnrg-20260604_def.xml | 2860 | 2026-06-05 16:23:39 |
| hnrg-20260604_lab.xml | 16591 | 2026-06-05 16:23:39 |
| hnrg-20260604_pre.xml | 10919 | 2026-06-05 16:23:39 |
| MetaLinks.json | 17489 | 2026-06-05 16:23:39 |
| R1.htm | 38105 | 2026-06-05 16:23:39 |
| report.css | 2767 | 2026-06-05 16:23:39 |
| Show.js | 1085 | 2026-06-05 16:23:39 |