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| 0000355811-17-000048-index.html | 2017-11-03 08:42:10 | |
| 0000355811-17-000048.txt | 2017-11-03 08:42:10 | |
 0000355811-17-000048-xbrl.zip | 157654 | 2017-11-03 08:42:10 |
| FilingSummary.xml | 27563 | 2017-11-03 08:42:10 |
| Financial_Report.xlsx | 58772 | 2017-11-03 08:42:10 |
| gntx-20170930.xml | 1506970 | 2017-11-03 08:42:10 |
| gntx-20170930.xsd | 30048 | 2017-11-03 08:42:10 |
| gntx-20170930_cal.xml | 75635 | 2017-11-03 08:42:10 |
| gntx-20170930_def.xml | 155275 | 2017-11-03 08:42:10 |
| gntx-20170930_lab.xml | 461213 | 2017-11-03 08:42:10 |
| gntx-20170930_pre.xml | 270270 | 2017-11-03 08:42:10 |
| gntx09302017-10q.htm | 1045370 | 2017-11-03 08:42:10 |
| gntx09302017-exx311.htm | 9436 | 2017-11-03 08:42:10 |
| gntx09302017-exx312.htm | 9441 | 2017-11-03 08:42:10 |
| gntx09302017-exx32.htm | 6296 | 2017-11-03 08:42:10 |
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| report.css | 2767 | 2017-11-03 08:42:10 |
| Show.js | 1410 | 2017-11-03 08:42:10 |