Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000355811-22-000041-index-headers.html | 2022-10-28 08:02:16 | |
| 0000355811-22-000041-index.html | 2022-10-28 08:02:16 | |
| 0000355811-22-000041.txt | 2022-10-28 08:02:16 | |
 0000355811-22-000041-xbrl.zip | 23201 | 2022-10-28 08:02:16 |
| exhibit99109302022.htm | 164223 | 2022-10-28 08:02:16 |
| FilingSummary.xml | 1720 | 2022-10-28 08:02:16 |
| Financial_Report.xlsx | 5708 | 2022-10-28 08:02:16 |
 gentex-blacka.jpg | 158578 | 2022-10-28 08:02:16 |
| gntx-20221028.htm | 32635 | 2022-10-28 08:02:16 |
| gntx-20221028.xsd | 1968 | 2022-10-28 08:02:16 |
| gntx-20221028_htm.xml | 10813 | 2022-10-28 08:02:16 |
| gntx-20221028_lab.xml | 24132 | 2022-10-28 08:02:16 |
| gntx-20221028_pre.xml | 12573 | 2022-10-28 08:02:16 |
| MetaLinks.json | 17040 | 2022-10-28 08:02:16 |
| R1.htm | 38112 | 2022-10-28 08:02:16 |
| report.css | 2767 | 2022-10-28 08:02:16 |
| Show.js | 1085 | 2022-10-28 08:02:16 |