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| 0001437749-24-018969.txt | 2024-06-03 09:32:16 | |
 0001437749-24-018969-xbrl.zip | 11831 | 2024-06-03 09:32:16 |
| FilingSummary.xml | 1826 | 2024-06-03 09:32:16 |
| Financial_Report.xlsx | 5708 | 2024-06-03 09:32:16 |
| hnrg-20240530.xsd | 3408 | 2024-06-03 09:32:16 |
| hnrg-20240530_def.xml | 11423 | 2024-06-03 09:32:16 |
| hnrg-20240530_lab.xml | 15309 | 2024-06-03 09:32:16 |
| hnrg-20240530_pre.xml | 11583 | 2024-06-03 09:32:16 |
| hnrg20240531_8k.htm | 29720 | 2024-06-03 09:32:16 |
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| hnrg20240531_8k_htm.xml | 2854 | 2024-06-03 09:32:16 |
| MetaLinks.json | 19330 | 2024-06-03 09:32:16 |
| R1.htm | 38368 | 2024-06-03 09:32:16 |
| report.css | 2767 | 2024-06-03 09:32:16 |
| Show.js | 1085 | 2024-06-03 09:32:16 |