Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000046619-20-000041-index-headers.html | 2020-08-25 17:27:45 | |
| 0000046619-20-000041-index.html | 2020-08-25 17:27:45 | |
| 0000046619-20-000041.txt | 2020-08-25 17:27:45 | |
 0000046619-20-000041-xbrl.zip | 31948 | 2020-08-25 17:27:45 |
| a07312020q3earningsrel.htm | 313124 | 2020-08-25 17:27:45 |
| FilingSummary.xml | 2292 | 2020-08-25 17:27:45 |
| Financial_Report.xlsx | 6158 | 2020-08-25 17:27:45 |
| hei-20200825.htm | 51901 | 2020-08-25 17:27:45 |
| hei-20200825.xsd | 3408 | 2020-08-25 17:27:45 |
| hei-20200825_cal.xml | 990 | 2020-08-25 17:27:45 |
| hei-20200825_def.xml | 19550 | 2020-08-25 17:27:45 |
| hei-20200825_htm.xml | 13418 | 2020-08-25 17:27:45 |
| hei-20200825_lab.xml | 36337 | 2020-08-25 17:27:45 |
| hei-20200825_pre.xml | 19909 | 2020-08-25 17:27:45 |
| MetaLinks.json | 26213 | 2020-08-25 17:27:45 |
| R1.htm | 14728 | 2020-08-25 17:27:45 |
| R2.htm | 30680 | 2020-08-25 17:27:45 |
| report.css | 2767 | 2020-08-25 17:27:45 |
| Show.js | 1085 | 2020-08-25 17:27:45 |