Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000046619-24-000017-index-headers.html | 2024-03-19 14:27:05 | |
| 0000046619-24-000017-index.html | 2024-03-19 14:27:05 | |
| 0000046619-24-000017.txt | 2024-03-19 14:27:05 | |
 0000046619-24-000017-xbrl.zip | 14030 | 2024-03-19 14:27:05 |
| FilingSummary.xml | 2295 | 2024-03-19 14:27:05 |
| Financial_Report.xlsx | 6477 | 2024-03-19 14:27:05 |
| hei-20240315.htm | 51266 | 2024-03-19 14:27:05 |
| hei-20240315.xsd | 3243 | 2024-03-19 14:27:05 |
| hei-20240315_def.xml | 13448 | 2024-03-19 14:27:05 |
| hei-20240315_htm.xml | 4040 | 2024-03-19 14:27:05 |
| hei-20240315_lab.xml | 29033 | 2024-03-19 14:27:05 |
| hei-20240315_pre.xml | 17522 | 2024-03-19 14:27:05 |
| MetaLinks.json | 23939 | 2024-03-19 14:27:05 |
| R1.htm | 14306 | 2024-03-19 14:27:05 |
| R2.htm | 30312 | 2024-03-19 14:27:05 |
| report.css | 2767 | 2024-03-19 14:27:05 |
| Show.js | 1085 | 2024-03-19 14:27:05 |