Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000046619-25-000060-index-headers.html | 2025-08-25 17:15:03 | |
| 0000046619-25-000060-index.html | 2025-08-25 17:15:03 | |
| 0000046619-25-000060.txt | 2025-08-25 17:15:03 | |
 0000046619-25-000060-xbrl.zip | 27597 | 2025-08-25 17:15:03 |
| a07312025ex991earningsrele.htm | 215392 | 2025-08-25 17:15:03 |
| FilingSummary.xml | 2341 | 2025-08-25 17:15:03 |
| hei-20250825.htm | 27933 | 2025-08-25 17:15:03 |
| hei-20250825.xsd | 3166 | 2025-08-25 17:15:03 |
| hei-20250825_def.xml | 19368 | 2025-08-25 17:15:03 |
| hei-20250825_htm.xml | 4040 | 2025-08-25 17:15:03 |
| hei-20250825_lab.xml | 32659 | 2025-08-25 17:15:03 |
| hei-20250825_pre.xml | 19848 | 2025-08-25 17:15:03 |
| MetaLinks.json | 26709 | 2025-08-25 17:15:03 |
| R1.htm | 14556 | 2025-08-25 17:15:03 |
| R2.htm | 30290 | 2025-08-25 17:15:03 |
| report.css | 2767 | 2025-08-25 17:15:03 |
| Show.js | 1085 | 2025-08-25 17:15:03 |