Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000046619-20-000008-index-headers.html | 2020-03-24 14:58:13 | |
| 0000046619-20-000008-index.html | 2020-03-24 14:58:13 | |
| 0000046619-20-000008.txt | 2020-03-24 14:58:13 | |
 0000046619-20-000008-xbrl.zip | 16595 | 2020-03-24 14:58:13 |
| FilingSummary.xml | 2402 | 2020-03-24 14:58:13 |
| Financial_Report.xlsx | 6510 | 2020-03-24 14:58:13 |
| form8-kitem507submissi.htm | 76257 | 2020-03-24 14:58:13 |
| form8-kitem507submissi_htm.xml | 6603 | 2020-03-24 14:58:13 |
| hei-20200320.xsd | 5245 | 2020-03-24 14:58:13 |
| hei-20200320_cal.xml | 992 | 2020-03-24 14:58:13 |
| hei-20200320_def.xml | 13549 | 2020-03-24 14:58:13 |
| hei-20200320_lab.xml | 34963 | 2020-03-24 14:58:13 |
| hei-20200320_pre.xml | 18539 | 2020-03-24 14:58:13 |
| MetaLinks.json | 24611 | 2020-03-24 14:58:13 |
| R1.htm | 14496 | 2020-03-24 14:58:13 |
| R2.htm | 30696 | 2020-03-24 14:58:13 |
| report.css | 2766 | 2020-03-24 14:58:13 |
| Show.js | 1085 | 2020-03-24 14:58:13 |