Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001759631-22-000008-index-headers.html | 2022-02-23 19:05:02 | |
| 0001759631-22-000008-index.html | 2022-02-23 19:05:02 | |
| 0001759631-22-000008.txt | 2022-02-23 19:05:02 | |
 0001759631-22-000008-xbrl.zip | 22455 | 2022-02-23 19:05:02 |
| exhibit991123121.htm | 178052 | 2022-02-23 19:05:02 |
| FilingSummary.xml | 1645 | 2022-02-23 19:05:02 |
| Financial_Report.xlsx | 5683 | 2022-02-23 19:05:02 |
| hyln-20220223.htm | 36432 | 2022-02-23 19:05:02 |
| hyln-20220223.xsd | 1899 | 2022-02-23 19:05:02 |
| hyln-20220223_htm.xml | 11569 | 2022-02-23 19:05:02 |
| hyln-20220223_lab.xml | 24849 | 2022-02-23 19:05:02 |
| hyln-20220223_pre.xml | 13044 | 2022-02-23 19:05:02 |
 image_0.jpg | 3281 | 2022-02-23 19:05:02 |
| MetaLinks.json | 16984 | 2022-02-23 19:05:02 |
| R1.htm | 40112 | 2022-02-23 19:05:02 |
| report.css | 2767 | 2022-02-23 19:05:02 |
| Show.js | 1085 | 2022-02-23 19:05:02 |