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| 0000040211-22-000094.txt | 2022-07-29 15:48:17 | |
 0000040211-22-000094-xbrl.zip | 565726 | 2022-07-29 15:48:17 |
| a20220630-exhibit31a.htm | 9771 | 2022-07-29 15:48:17 |
| a20220630-exhibit31b.htm | 9864 | 2022-07-29 15:48:17 |
| a20220630-exhibit32.htm | 7030 | 2022-07-29 15:48:17 |
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| Financial_Report.xlsx | 66555 | 2022-07-29 15:48:17 |
| gmt-20220630.htm | 2239573 | 2022-07-29 15:48:17 |
| gmt-20220630.xsd | 38144 | 2022-07-29 15:48:17 |
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| gmt-20220630_htm.xml | 1301926 | 2022-07-29 15:48:17 |
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| report.css | 2767 | 2022-07-29 15:48:17 |
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