Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0000046619-23-000049-index.html | 2023-02-27 17:09:26 | |
| 0000046619-23-000049.txt | 2023-02-27 17:09:26 | |
 0000046619-23-000049-xbrl.zip | 27132 | 2023-02-27 17:09:26 |
| a01312023q1ex991earningsre.htm | 150052 | 2023-02-27 17:09:26 |
| FilingSummary.xml | 2356 | 2023-02-27 17:09:26 |
| Financial_Report.xlsx | 6480 | 2023-02-27 17:09:26 |
| hei-20230227.htm | 41358 | 2023-02-27 17:09:26 |
| hei-20230227.xsd | 3283 | 2023-02-27 17:09:26 |
| hei-20230227_def.xml | 19530 | 2023-02-27 17:09:26 |
| hei-20230227_htm.xml | 14185 | 2023-02-27 17:09:26 |
| hei-20230227_lab.xml | 36136 | 2023-02-27 17:09:26 |
| hei-20230227_pre.xml | 19846 | 2023-02-27 17:09:26 |
| MetaLinks.json | 26792 | 2023-02-27 17:09:26 |
| R1.htm | 14572 | 2023-02-27 17:09:26 |
| R2.htm | 30305 | 2023-02-27 17:09:26 |
| report.css | 2767 | 2023-02-27 17:09:26 |
| Show.js | 1085 | 2023-02-27 17:09:26 |