Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0000355811-25-000013-index.html | 2025-04-01 09:02:48 | |
| 0000355811-25-000013.txt | 2025-04-01 09:02:48 | |
 0000355811-25-000013-xbrl.zip | 14397 | 2025-04-01 09:02:48 |
| exhibit991412025.htm | 15550 | 2025-04-01 09:02:48 |
| FilingSummary.xml | 1695 | 2025-04-01 09:02:48 |
| Financial_Report.xlsx | 5730 | 2025-04-01 09:02:48 |
 gentex-blacka.jpg | 158578 | 2025-04-01 09:02:48 |
| gntx-20250401.htm | 30883 | 2025-04-01 09:02:48 |
| gntx-20250401.xsd | 1851 | 2025-04-01 09:02:48 |
| gntx-20250401_htm.xml | 2715 | 2025-04-01 09:02:48 |
| gntx-20250401_lab.xml | 21880 | 2025-04-01 09:02:48 |
| gntx-20250401_pre.xml | 12575 | 2025-04-01 09:02:48 |
| MetaLinks.json | 17474 | 2025-04-01 09:02:48 |
| R1.htm | 38096 | 2025-04-01 09:02:48 |
| report.css | 2767 | 2025-04-01 09:02:48 |
| Show.js | 1085 | 2025-04-01 09:02:48 |