Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0000046619-25-000076-index.html | 2025-12-18 17:02:22 | |
| 0000046619-25-000076.txt | 2025-12-18 17:02:22 | |
 0000046619-25-000076-xbrl.zip | 26787 | 2025-12-18 17:02:22 |
| a10312025ex991earningsrele.htm | 209835 | 2025-12-18 17:02:22 |
| FilingSummary.xml | 2181 | 2025-12-18 17:02:22 |
| hei-20251218.htm | 28258 | 2025-12-18 17:02:22 |
| hei-20251218.xsd | 3014 | 2025-12-18 17:02:22 |
| hei-20251218_def.xml | 19224 | 2025-12-18 17:02:22 |
| hei-20251218_htm.xml | 4040 | 2025-12-18 17:02:22 |
| hei-20251218_lab.xml | 32659 | 2025-12-18 17:02:22 |
| hei-20251218_pre.xml | 19704 | 2025-12-18 17:02:22 |
| MetaLinks.json | 25889 | 2025-12-18 17:02:22 |
| R1.htm | 14513 | 2025-12-18 17:02:22 |
| R2.htm | 30277 | 2025-12-18 17:02:22 |
| report.css | 2767 | 2025-12-18 17:02:22 |
| Show.js | 1085 | 2025-12-18 17:02:22 |