Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-21-014102-index-headers.html | 2021-06-03 17:13:57 | |
| 0001437749-21-014102-index.html | 2021-06-03 17:13:57 | |
| 0001437749-21-014102.txt | 2021-06-03 17:13:57 | |
 0001437749-21-014102-xbrl.zip | 16025 | 2021-06-03 17:13:57 |
| ex_254259.htm | 9797 | 2021-06-03 17:13:57 |
| FilingSummary.xml | 1813 | 2021-06-03 17:13:57 |
| Financial_Report.xlsx | 5677 | 2021-06-03 17:13:57 |
| hnrg-20210601.xsd | 3699 | 2021-06-03 17:13:57 |
| hnrg-20210601_def.xml | 11585 | 2021-06-03 17:13:57 |
| hnrg-20210601_lab.xml | 15465 | 2021-06-03 17:13:57 |
| hnrg-20210601_pre.xml | 11739 | 2021-06-03 17:13:57 |
| hnrg20210531_8k.htm | 39627 | 2021-06-03 17:13:57 |
| hnrg20210531_8k_htm.xml | 2567 | 2021-06-03 17:13:57 |
 logo.jpg | 3779 | 2021-06-03 17:13:57 |
| MetaLinks.json | 19359 | 2021-06-03 17:13:57 |
 prlogo.jpg | 7825 | 2021-06-03 17:13:57 |
| R1.htm | 38873 | 2021-06-03 17:13:57 |
| report.css | 2767 | 2021-06-03 17:13:57 |
| Show.js | 1085 | 2021-06-03 17:13:57 |