Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000046619-25-000064-index-headers.html | 2025-09-29 16:03:01 | |
| 0000046619-25-000064-index.html | 2025-09-29 16:03:01 | |
| 0000046619-25-000064.txt | 2025-09-29 16:03:01 | |
 0000046619-25-000064-xbrl.zip | 17726 | 2025-09-29 16:03:01 |
| a09292025ex991departureofd.htm | 11888 | 2025-09-29 16:03:01 |
| FilingSummary.xml | 2341 | 2025-09-29 16:03:01 |
| hei-20250927.htm | 27784 | 2025-09-29 16:03:01 |
| hei-20250927.xsd | 3166 | 2025-09-29 16:03:01 |
| hei-20250927_def.xml | 19368 | 2025-09-29 16:03:01 |
| hei-20250927_htm.xml | 4040 | 2025-09-29 16:03:01 |
| hei-20250927_lab.xml | 32659 | 2025-09-29 16:03:01 |
| hei-20250927_pre.xml | 19848 | 2025-09-29 16:03:01 |
 image_0a.jpg | 68473 | 2025-09-29 16:03:01 |
 image_1a.jpg | 62049 | 2025-09-29 16:03:01 |
| MetaLinks.json | 26709 | 2025-09-29 16:03:01 |
| R1.htm | 14557 | 2025-09-29 16:03:01 |
| R2.htm | 30291 | 2025-09-29 16:03:01 |
| report.css | 2767 | 2025-09-29 16:03:01 |
| Show.js | 1085 | 2025-09-29 16:03:01 |