Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000931148-21-000026-index-headers.html | 2021-02-08 07:30:52 | |
| 0000931148-21-000026-index.html | 2021-02-08 07:30:52 | |
| 0000931148-21-000026.txt | 2021-02-08 07:30:52 | |
 0000931148-21-000026-xbrl.zip | 86086 | 2021-02-08 07:30:52 |
| FilingSummary.xml | 1728 | 2021-02-08 07:30:52 |
| Financial_Report.xlsx | 5487 | 2021-02-08 07:30:52 |
| gti-20210208.htm | 32956 | 2021-02-08 07:30:52 |
| gti-20210208.xsd | 2418 | 2021-02-08 07:30:52 |
| gti-20210208_cal.xml | 709 | 2021-02-08 07:30:52 |
| gti-20210208_def.xml | 1642 | 2021-02-08 07:30:52 |
 gti-20210208_g1.jpg | 84955 | 2021-02-08 07:30:52 |
| gti-20210208_htm.xml | 11098 | 2021-02-08 07:30:52 |
| gti-20210208_lab.xml | 24293 | 2021-02-08 07:30:52 |
| gti-20210208_pre.xml | 12645 | 2021-02-08 07:30:52 |
| MetaLinks.json | 17393 | 2021-02-08 07:30:52 |
| R1.htm | 39664 | 2021-02-08 07:30:52 |
| report.css | 2767 | 2021-02-08 07:30:52 |
| Show.js | 1085 | 2021-02-08 07:30:52 |