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| 0001437749-22-023586-index.html | 2022-10-04 16:49:14 | |
| 0001437749-22-023586.txt | 2022-10-04 16:49:14 | |
 0001437749-22-023586-xbrl.zip | 149092 | 2022-10-04 16:49:14 |
| ex_428071.htm | 1017379 | 2022-10-04 16:49:14 |
| FilingSummary.xml | 1825 | 2022-10-04 16:49:14 |
| Financial_Report.xlsx | 5697 | 2022-10-04 16:49:14 |
| hnrg-20220928.xsd | 3601 | 2022-10-04 16:49:14 |
| hnrg-20220928_def.xml | 11532 | 2022-10-04 16:49:14 |
| hnrg-20220928_lab.xml | 15414 | 2022-10-04 16:49:14 |
| hnrg-20220928_pre.xml | 11688 | 2022-10-04 16:49:14 |
| hnrg20220929b_8k.htm | 28667 | 2022-10-04 16:49:14 |
| hnrg20220929b_8k_htm.xml | 2563 | 2022-10-04 16:49:14 |
 logo.jpg | 3779 | 2022-10-04 16:49:14 |
| MetaLinks.json | 18925 | 2022-10-04 16:49:14 |
| R1.htm | 38351 | 2022-10-04 16:49:14 |
| report.css | 2767 | 2022-10-04 16:49:14 |
| Show.js | 1085 | 2022-10-04 16:49:14 |