Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000046619-23-000056-index-headers.html | 2023-03-20 16:43:29 | |
| 0000046619-23-000056-index.html | 2023-03-20 16:43:29 | |
| 0000046619-23-000056.txt | 2023-03-20 16:43:29 | |
 0000046619-23-000056-xbrl.zip | 14383 | 2023-03-20 16:43:29 |
| FilingSummary.xml | 2262 | 2023-03-20 16:43:29 |
| Financial_Report.xlsx | 6474 | 2023-03-20 16:43:29 |
| hei-20230317.htm | 55469 | 2023-03-20 16:43:29 |
| hei-20230317.xsd | 3239 | 2023-03-20 16:43:29 |
| hei-20230317_def.xml | 13520 | 2023-03-20 16:43:29 |
| hei-20230317_htm.xml | 5712 | 2023-03-20 16:43:29 |
| hei-20230317_lab.xml | 32118 | 2023-03-20 16:43:29 |
| hei-20230317_pre.xml | 17520 | 2023-03-20 16:43:29 |
| MetaLinks.json | 24075 | 2023-03-20 16:43:29 |
| R1.htm | 14306 | 2023-03-20 16:43:29 |
| R2.htm | 30312 | 2023-03-20 16:43:29 |
| report.css | 2767 | 2023-03-20 16:43:29 |
| Show.js | 1085 | 2023-03-20 16:43:29 |