Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000931148-23-000037-index-headers.html | 2023-02-24 16:08:56 | |
| 0000931148-23-000037-index.html | 2023-02-24 16:08:56 | |
| 0000931148-23-000037.txt | 2023-02-24 16:08:56 | |
 0000931148-23-000037-xbrl.zip | 84311 | 2023-02-24 16:08:56 |
| FilingSummary.xml | 1658 | 2023-02-24 16:08:56 |
| Financial_Report.xlsx | 5700 | 2023-02-24 16:08:56 |
| gti-20230221.htm | 30252 | 2023-02-24 16:08:56 |
| gti-20230221.xsd | 1899 | 2023-02-24 16:08:56 |
 gti-20230221_g1.jpg | 84955 | 2023-02-24 16:08:56 |
| gti-20230221_htm.xml | 10827 | 2023-02-24 16:08:56 |
| gti-20230221_lab.xml | 24155 | 2023-02-24 16:08:56 |
| gti-20230221_pre.xml | 12507 | 2023-02-24 16:08:56 |
| MetaLinks.json | 17184 | 2023-02-24 16:08:56 |
| R1.htm | 38108 | 2023-02-24 16:08:56 |
| report.css | 2767 | 2023-02-24 16:08:56 |
| Show.js | 1084 | 2023-02-24 16:08:56 |