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| 0000046619-22-000036.txt | 2022-07-29 14:45:27 | |
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| exhibit101exxeliaputoption.htm | 734233 | 2022-07-29 14:45:27 |
| exhibit991exxeliapressrele.htm | 16024 | 2022-07-29 14:45:27 |
| FilingSummary.xml | 2404 | 2022-07-29 14:45:27 |
| Financial_Report.xlsx | 6483 | 2022-07-29 14:45:27 |
| hei-20220726.htm | 44681 | 2022-07-29 14:45:27 |
| hei-20220726.xsd | 3283 | 2022-07-29 14:45:27 |
| hei-20220726_def.xml | 19530 | 2022-07-29 14:45:27 |
| hei-20220726_htm.xml | 14185 | 2022-07-29 14:45:27 |
| hei-20220726_lab.xml | 36136 | 2022-07-29 14:45:27 |
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| report.css | 2767 | 2022-07-29 14:45:27 |
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