Parent Directory| Name | Size | Last Modified |
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| 0001104659-25-039421-index.html | 2025-04-25 16:10:21 | |
| 0001104659-25-039421.txt | 2025-04-25 16:10:21 | |
 0001104659-25-039421-xbrl.zip | 13731 | 2025-04-25 16:10:21 |
| FilingSummary.xml | 1681 | 2025-04-25 16:10:21 |
| Financial_Report.xlsx | 5783 | 2025-04-25 16:10:21 |
| MetaLinks.json | 41588 | 2025-04-25 16:10:21 |
| nehc-20250422.xsd | 3499 | 2025-04-25 16:10:21 |
| nehc-20250422_def.xml | 26517 | 2025-04-25 16:10:21 |
| nehc-20250422_lab.xml | 36432 | 2025-04-25 16:10:21 |
| nehc-20250422_pre.xml | 25141 | 2025-04-25 16:10:21 |
| R1.htm | 41618 | 2025-04-25 16:10:21 |
| report.css | 2767 | 2025-04-25 16:10:21 |
| Show.js | 1084 | 2025-04-25 16:10:21 |
| tm2513229d1_8k.htm | 27365 | 2025-04-25 16:10:21 |
| tm2513229d1_8k_htm.xml | 5363 | 2025-04-25 16:10:21 |