Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000931148-23-000170-index-headers.html | 2023-12-14 09:01:53 | |
| 0000931148-23-000170-index.html | 2023-12-14 09:01:53 | |
| 0000931148-23-000170.txt | 2023-12-14 09:01:53 | |
 0000931148-23-000170-xbrl.zip | 83225 | 2023-12-14 09:01:53 |
| FilingSummary.xml | 1675 | 2023-12-14 09:01:53 |
| Financial_Report.xlsx | 5700 | 2023-12-14 09:01:53 |
| gti-20231212.htm | 22875 | 2023-12-14 09:01:53 |
| gti-20231212.xsd | 1901 | 2023-12-14 09:01:53 |
 gti-20231212_g1.jpg | 84955 | 2023-12-14 09:01:53 |
| gti-20231212_htm.xml | 2720 | 2023-12-14 09:01:53 |
| gti-20231212_lab.xml | 25158 | 2023-12-14 09:01:53 |
| gti-20231212_pre.xml | 13044 | 2023-12-14 09:01:53 |
| MetaLinks.json | 17614 | 2023-12-14 09:01:53 |
| R1.htm | 38108 | 2023-12-14 09:01:53 |
| report.css | 2767 | 2023-12-14 09:01:53 |
| Show.js | 1084 | 2023-12-14 09:01:53 |