Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001493152-21-025316-index-headers.html | 2021-10-13 16:33:09 | |
| 0001493152-21-025316-index.html | 2021-10-13 16:33:09 | |
| 0001493152-21-025316.txt | 2021-10-13 16:33:09 | |
 0001493152-21-025316-xbrl.zip | 286432 | 2021-10-13 16:33:09 |
 ao_003.jpg | 4828 | 2021-10-13 16:33:09 |
| ex10-30.htm | 19351 | 2021-10-13 16:33:09 |
| ex31-1.htm | 18366 | 2021-10-13 16:33:09 |
| ex31-2.htm | 18738 | 2021-10-13 16:33:09 |
| ex32-1.htm | 6084 | 2021-10-13 16:33:09 |
| FilingSummary.xml | 34127 | 2021-10-13 16:33:09 |
| Financial_Report.xlsx | 124521 | 2021-10-13 16:33:09 |
| form10-k.htm | 1927929 | 2021-10-13 16:33:09 |
| form10-k_htm.xml | 1771746 | 2021-10-13 16:33:09 |
| gtll-20210630.xsd | 61564 | 2021-10-13 16:33:09 |
| gtll-20210630_cal.xml | 66831 | 2021-10-13 16:33:09 |
| gtll-20210630_def.xml | 264657 | 2021-10-13 16:33:09 |
| gtll-20210630_lab.xml | 389658 | 2021-10-13 16:33:09 |
| gtll-20210630_pre.xml | 360459 | 2021-10-13 16:33:09 |
 logo_001.jpg | 4650 | 2021-10-13 16:33:09 |
| MetaLinks.json | 584064 | 2021-10-13 16:33:09 |
| R1.htm | 60915 | 2021-10-13 16:33:09 |
| R10.htm | 43885 | 2021-10-13 16:33:09 |
| R11.htm | 15908 | 2021-10-13 16:33:09 |
| R12.htm | 37117 | 2021-10-13 16:33:09 |
| R13.htm | 150895 | 2021-10-13 16:33:09 |
| R14.htm | 23801 | 2021-10-13 16:33:09 |
| R15.htm | 40168 | 2021-10-13 16:33:09 |
| R16.htm | 101526 | 2021-10-13 16:33:09 |
| R17.htm | 41959 | 2021-10-13 16:33:09 |
| R18.htm | 9426 | 2021-10-13 16:33:09 |
| R19.htm | 13153 | 2021-10-13 16:33:09 |
| R2.htm | 109608 | 2021-10-13 16:33:09 |
| R20.htm | 291921 | 2021-10-13 16:33:09 |
| R21.htm | 125246 | 2021-10-13 16:33:09 |
| R22.htm | 10602 | 2021-10-13 16:33:09 |
| R23.htm | 37655 | 2021-10-13 16:33:09 |
| R24.htm | 14919 | 2021-10-13 16:33:09 |
| R25.htm | 35476 | 2021-10-13 16:33:09 |
| R26.htm | 144947 | 2021-10-13 16:33:09 |
| R27.htm | 23095 | 2021-10-13 16:33:09 |
| R28.htm | 37147 | 2021-10-13 16:33:09 |
| R29.htm | 33882 | 2021-10-13 16:33:09 |
| R3.htm | 21276 | 2021-10-13 16:33:09 |
| R30.htm | 101363 | 2021-10-13 16:33:09 |
| R31.htm | 4412 | 2021-10-13 16:33:09 |
| R32.htm | 28499 | 2021-10-13 16:33:09 |
| R33.htm | 22211 | 2021-10-13 16:33:09 |
| R34.htm | 18845 | 2021-10-13 16:33:09 |
| R35.htm | 8560 | 2021-10-13 16:33:09 |
| R36.htm | 23329 | 2021-10-13 16:33:09 |
| R37.htm | 12336 | 2021-10-13 16:33:09 |
| R38.htm | 4769 | 2021-10-13 16:33:09 |
| R39.htm | 7432 | 2021-10-13 16:33:09 |
| R4.htm | 87867 | 2021-10-13 16:33:09 |
| R40.htm | 19349 | 2021-10-13 16:33:09 |
| R41.htm | 9279 | 2021-10-13 16:33:09 |
| R42.htm | 147735 | 2021-10-13 16:33:09 |
| R43.htm | 263083 | 2021-10-13 16:33:09 |
| R44.htm | 18677 | 2021-10-13 16:33:09 |
| R45.htm | 14981 | 2021-10-13 16:33:09 |
| R46.htm | 42602 | 2021-10-13 16:33:09 |
| R47.htm | 21228 | 2021-10-13 16:33:09 |
| R48.htm | 11131 | 2021-10-13 16:33:09 |
| R49.htm | 21884 | 2021-10-13 16:33:09 |
| R5.htm | 4352 | 2021-10-13 16:33:09 |
| R50.htm | 306585 | 2021-10-13 16:33:09 |
| R51.htm | 24229 | 2021-10-13 16:33:09 |
| R52.htm | 10956 | 2021-10-13 16:33:09 |
| R53.htm | 10994 | 2021-10-13 16:33:09 |
| R54.htm | 13917 | 2021-10-13 16:33:09 |
| R55.htm | 9048 | 2021-10-13 16:33:09 |
| R56.htm | 39344 | 2021-10-13 16:33:09 |
| R6.htm | 62871 | 2021-10-13 16:33:09 |
| R7.htm | 100060 | 2021-10-13 16:33:09 |
| R8.htm | 45328 | 2021-10-13 16:33:09 |
| R9.htm | 78810 | 2021-10-13 16:33:09 |
| report.css | 2767 | 2021-10-13 16:33:09 |
 report_002.jpg | 7062 | 2021-10-13 16:33:09 |
| Show.js | 1085 | 2021-10-13 16:33:09 |