Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000931148-23-000078-index-headers.html | 2023-05-10 16:52:31 | |
| 0000931148-23-000078-index.html | 2023-05-10 16:52:31 | |
| 0000931148-23-000078.txt | 2023-05-10 16:52:31 | |
 0000931148-23-000078-xbrl.zip | 85152 | 2023-05-10 16:52:31 |
| FilingSummary.xml | 1658 | 2023-05-10 16:52:31 |
| Financial_Report.xlsx | 5699 | 2023-05-10 16:52:31 |
| gti-20230510.htm | 42811 | 2023-05-10 16:52:31 |
| gti-20230510.xsd | 1899 | 2023-05-10 16:52:31 |
 gti-20230510_g1.jpg | 84955 | 2023-05-10 16:52:31 |
| gti-20230510_htm.xml | 10827 | 2023-05-10 16:52:31 |
| gti-20230510_lab.xml | 24155 | 2023-05-10 16:52:31 |
| gti-20230510_pre.xml | 12507 | 2023-05-10 16:52:31 |
| MetaLinks.json | 17184 | 2023-05-10 16:52:31 |
| R1.htm | 38106 | 2023-05-10 16:52:31 |
| report.css | 2767 | 2023-05-10 16:52:31 |
| Show.js | 1084 | 2023-05-10 16:52:31 |