Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000788965-26-000004-index-headers.html | 2026-06-11 17:28:42 | |
| 0000788965-26-000004-index.html | 2026-06-11 17:28:42 | |
| 0000788965-26-000004.txt | 2026-06-11 17:28:42 | |
 0000788965-26-000004-xbrl.zip | 21557 | 2026-06-11 17:28:42 |
| FilingSummary.xml | 1832 | 2026-06-11 17:28:42 |
| hnrg-20260608.xsd | 3530 | 2026-06-11 17:28:42 |
| hnrg-20260608x8k.htm | 51709 | 2026-06-11 17:28:42 |
 hnrg-20260608x8k001.jpg | 3186 | 2026-06-11 17:28:42 |
| hnrg-20260608x8k_htm.xml | 4608 | 2026-06-11 17:28:42 |
| hnrg-20260608xex10d1.htm | 48753 | 2026-06-11 17:28:42 |
| hnrg-20260608_def.xml | 2862 | 2026-06-11 17:28:42 |
| hnrg-20260608_lab.xml | 16593 | 2026-06-11 17:28:42 |
| hnrg-20260608_pre.xml | 10921 | 2026-06-11 17:28:42 |
| MetaLinks.json | 17489 | 2026-06-11 17:28:42 |
| R1.htm | 38104 | 2026-06-11 17:28:42 |
| report.css | 2767 | 2026-06-11 17:28:42 |
| Show.js | 1085 | 2026-06-11 17:28:42 |