Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000046619-25-000042-index-headers.html | 2025-05-27 17:13:44 | |
| 0000046619-25-000042-index.html | 2025-05-27 17:13:44 | |
| 0000046619-25-000042.txt | 2025-05-27 17:13:44 | |
 0000046619-25-000042-xbrl.zip | 27473 | 2025-05-27 17:13:44 |
| a04302025ex991earningsrele.htm | 214737 | 2025-05-27 17:13:44 |
| FilingSummary.xml | 2341 | 2025-05-27 17:13:44 |
| hei-20250527.htm | 28246 | 2025-05-27 17:13:44 |
| hei-20250527.xsd | 3168 | 2025-05-27 17:13:44 |
| hei-20250527_def.xml | 19368 | 2025-05-27 17:13:44 |
| hei-20250527_htm.xml | 4040 | 2025-05-27 17:13:44 |
| hei-20250527_lab.xml | 32659 | 2025-05-27 17:13:44 |
| hei-20250527_pre.xml | 19848 | 2025-05-27 17:13:44 |
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| R1.htm | 14554 | 2025-05-27 17:13:44 |
| R2.htm | 30289 | 2025-05-27 17:13:44 |
| report.css | 2767 | 2025-05-27 17:13:44 |
| Show.js | 1085 | 2025-05-27 17:13:44 |