Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000931148-22-000072-index-headers.html | 2022-05-12 16:36:28 | |
| 0000931148-22-000072-index.html | 2022-05-12 16:36:28 | |
| 0000931148-22-000072.txt | 2022-05-12 16:36:28 | |
 0000931148-22-000072-xbrl.zip | 85141 | 2022-05-12 16:36:28 |
| FilingSummary.xml | 1660 | 2022-05-12 16:36:28 |
| Financial_Report.xlsx | 5675 | 2022-05-12 16:36:28 |
| gti-20220512.htm | 43664 | 2022-05-12 16:36:28 |
| gti-20220512.xsd | 1905 | 2022-05-12 16:36:28 |
 gti-20220512_g1.jpg | 84955 | 2022-05-12 16:36:28 |
| gti-20220512_htm.xml | 10829 | 2022-05-12 16:36:28 |
| gti-20220512_lab.xml | 24247 | 2022-05-12 16:36:28 |
| gti-20220512_pre.xml | 12599 | 2022-05-12 16:36:28 |
| MetaLinks.json | 16704 | 2022-05-12 16:36:28 |
| R1.htm | 38713 | 2022-05-12 16:36:28 |
| report.css | 2767 | 2022-05-12 16:36:28 |
| Show.js | 1084 | 2022-05-12 16:36:28 |