Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000046619-23-000071-index-headers.html | 2023-04-12 17:28:40 | |
| 0000046619-23-000071-index.html | 2023-04-12 17:28:40 | |
| 0000046619-23-000071.txt | 2023-04-12 17:28:40 | |
 0000046619-23-000071-xbrl.zip | 13514 | 2023-04-12 17:28:40 |
| FilingSummary.xml | 2262 | 2023-04-12 17:28:40 |
| Financial_Report.xlsx | 6479 | 2023-04-12 17:28:40 |
| hei-20230407.htm | 27060 | 2023-04-12 17:28:40 |
| hei-20230407.xsd | 3241 | 2023-04-12 17:28:40 |
| hei-20230407_def.xml | 13520 | 2023-04-12 17:28:40 |
| hei-20230407_htm.xml | 5712 | 2023-04-12 17:28:40 |
| hei-20230407_lab.xml | 32118 | 2023-04-12 17:28:40 |
| hei-20230407_pre.xml | 17520 | 2023-04-12 17:28:40 |
| MetaLinks.json | 24135 | 2023-04-12 17:28:40 |
| R1.htm | 14307 | 2023-04-12 17:28:40 |
| R2.htm | 30312 | 2023-04-12 17:28:40 |
| report.css | 2767 | 2023-04-12 17:28:40 |
| Show.js | 1085 | 2023-04-12 17:28:40 |