Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000046619-25-000020-index-headers.html | 2025-03-18 16:54:14 | |
| 0000046619-25-000020-index.html | 2025-03-18 16:54:14 | |
| 0000046619-25-000020.txt | 2025-03-18 16:54:14 | |
 0000046619-25-000020-xbrl.zip | 13970 | 2025-03-18 16:54:14 |
| FilingSummary.xml | 2295 | 2025-03-18 16:54:14 |
| Financial_Report.xlsx | 6496 | 2025-03-18 16:54:14 |
| hei-20250314.htm | 51282 | 2025-03-18 16:54:14 |
| hei-20250314.xsd | 3124 | 2025-03-18 16:54:14 |
| hei-20250314_def.xml | 13448 | 2025-03-18 16:54:14 |
| hei-20250314_htm.xml | 4040 | 2025-03-18 16:54:14 |
| hei-20250314_lab.xml | 29033 | 2025-03-18 16:54:14 |
| hei-20250314_pre.xml | 17522 | 2025-03-18 16:54:14 |
| MetaLinks.json | 23992 | 2025-03-18 16:54:14 |
| R1.htm | 14290 | 2025-03-18 16:54:14 |
| R2.htm | 30297 | 2025-03-18 16:54:14 |
| report.css | 2767 | 2025-03-18 16:54:14 |
| Show.js | 1085 | 2025-03-18 16:54:14 |