Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000355811-22-000017-index-headers.html | 2022-04-22 08:00:16 | |
| 0000355811-22-000017-index.html | 2022-04-22 08:00:16 | |
| 0000355811-22-000017.txt | 2022-04-22 08:00:16 | |
 0000355811-22-000017-xbrl.zip | 21479 | 2022-04-22 08:00:16 |
| exhibit99103312022.htm | 132867 | 2022-04-22 08:00:16 |
| FilingSummary.xml | 1718 | 2022-04-22 08:00:16 |
| Financial_Report.xlsx | 5683 | 2022-04-22 08:00:16 |
 gentex-blacka.jpg | 158578 | 2022-04-22 08:00:16 |
| gntx-20220422.htm | 32621 | 2022-04-22 08:00:16 |
| gntx-20220422.xsd | 1968 | 2022-04-22 08:00:16 |
| gntx-20220422_htm.xml | 10813 | 2022-04-22 08:00:16 |
| gntx-20220422_lab.xml | 24132 | 2022-04-22 08:00:16 |
| gntx-20220422_pre.xml | 12573 | 2022-04-22 08:00:16 |
| MetaLinks.json | 17042 | 2022-04-22 08:00:16 |
| R1.htm | 38725 | 2022-04-22 08:00:16 |
| report.css | 2767 | 2022-04-22 08:00:16 |
| Show.js | 1085 | 2022-04-22 08:00:16 |