Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-24-042261-index-headers.html | 2024-04-05 16:10:42 | |
| 0000950170-24-042261-index.html | 2024-04-05 16:10:42 | |
| 0000950170-24-042261.txt | 2024-04-05 16:10:42 | |
 0000950170-24-042261-xbrl.zip | 299814 | 2024-04-05 16:10:42 |
| FilingSummary.xml | 49800 | 2024-04-05 16:10:42 |
| Financial_Report.xlsx | 110450 | 2024-04-05 16:10:42 |
| gbx-20240229.htm | 2930496 | 2024-04-05 16:10:42 |
| gbx-20240229.xsd | 1396641 | 2024-04-05 16:10:42 |
| gbx-20240229_htm.xml | 2605366 | 2024-04-05 16:10:42 |
| gbx-ex10_1.htm | 48718 | 2024-04-05 16:10:42 |
| gbx-ex31_1.htm | 15553 | 2024-04-05 16:10:42 |
| gbx-ex31_2.htm | 16517 | 2024-04-05 16:10:42 |
| gbx-ex32_1.htm | 9054 | 2024-04-05 16:10:42 |
| gbx-ex32_2.htm | 10623 | 2024-04-05 16:10:42 |
| gbx-ex3_1.htm | 255329 | 2024-04-05 16:10:42 |
| MetaLinks.json | 970622 | 2024-04-05 16:10:42 |
| R1.htm | 53090 | 2024-04-05 16:10:42 |
| R10.htm | 15383 | 2024-04-05 16:10:42 |
| R11.htm | 25431 | 2024-04-05 16:10:42 |
| R12.htm | 16849 | 2024-04-05 16:10:42 |
| R13.htm | 39749 | 2024-04-05 16:10:42 |
| R14.htm | 19483 | 2024-04-05 16:10:42 |
| R15.htm | 40522 | 2024-04-05 16:10:42 |
| R16.htm | 39750 | 2024-04-05 16:10:42 |
| R17.htm | 23988 | 2024-04-05 16:10:42 |
| R18.htm | 35943 | 2024-04-05 16:10:42 |
| R19.htm | 55653 | 2024-04-05 16:10:42 |
| R2.htm | 105304 | 2024-04-05 16:10:42 |
| R20.htm | 75832 | 2024-04-05 16:10:42 |
| R21.htm | 86734 | 2024-04-05 16:10:42 |
| R22.htm | 196627 | 2024-04-05 16:10:42 |
| R23.htm | 239456 | 2024-04-05 16:10:42 |
| R24.htm | 75653 | 2024-04-05 16:10:42 |
| R25.htm | 19715 | 2024-04-05 16:10:42 |
| R26.htm | 77151 | 2024-04-05 16:10:42 |
| R27.htm | 10175 | 2024-04-05 16:10:42 |
| R28.htm | 10012 | 2024-04-05 16:10:42 |
| R29.htm | 32251 | 2024-04-05 16:10:42 |
| R3.htm | 17490 | 2024-04-05 16:10:42 |
| R30.htm | 20126 | 2024-04-05 16:10:42 |
| R31.htm | 39944 | 2024-04-05 16:10:42 |
| R32.htm | 23222 | 2024-04-05 16:10:42 |
| R33.htm | 23709 | 2024-04-05 16:10:42 |
| R34.htm | 33992 | 2024-04-05 16:10:42 |
| R35.htm | 44710 | 2024-04-05 16:10:42 |
| R36.htm | 76465 | 2024-04-05 16:10:42 |
| R37.htm | 85487 | 2024-04-05 16:10:42 |
| R38.htm | 193072 | 2024-04-05 16:10:42 |
| R39.htm | 236781 | 2024-04-05 16:10:42 |
| R4.htm | 108588 | 2024-04-05 16:10:42 |
| R40.htm | 70980 | 2024-04-05 16:10:42 |
| R41.htm | 74059 | 2024-04-05 16:10:42 |
| R42.htm | 16480 | 2024-04-05 16:10:42 |
| R43.htm | 17006 | 2024-04-05 16:10:42 |
| R44.htm | 10399 | 2024-04-05 16:10:42 |
| R45.htm | 13330 | 2024-04-05 16:10:42 |
| R46.htm | 12749 | 2024-04-05 16:10:42 |
| R47.htm | 32139 | 2024-04-05 16:10:42 |
| R48.htm | 70409 | 2024-04-05 16:10:42 |
| R49.htm | 15276 | 2024-04-05 16:10:42 |
| R5.htm | 47744 | 2024-04-05 16:10:42 |
| R50.htm | 22210 | 2024-04-05 16:10:42 |
| R51.htm | 12326 | 2024-04-05 16:10:42 |
| R52.htm | 32960 | 2024-04-05 16:10:42 |
| R53.htm | 15565 | 2024-04-05 16:10:42 |
| R54.htm | 51604 | 2024-04-05 16:10:42 |
| R55.htm | 14720 | 2024-04-05 16:10:42 |
| R56.htm | 25687 | 2024-04-05 16:10:42 |
| R57.htm | 31480 | 2024-04-05 16:10:42 |
| R58.htm | 15501 | 2024-04-05 16:10:42 |
| R59.htm | 8669 | 2024-04-05 16:10:42 |
| R6.htm | 7280 | 2024-04-05 16:10:42 |
| R60.htm | 8577 | 2024-04-05 16:10:42 |
| R61.htm | 39480 | 2024-04-05 16:10:42 |
| R62.htm | 6391 | 2024-04-05 16:10:42 |
| R63.htm | 19043 | 2024-04-05 16:10:42 |
| R64.htm | 35250 | 2024-04-05 16:10:42 |
| R65.htm | 32896 | 2024-04-05 16:10:42 |
| R66.htm | 27574 | 2024-04-05 16:10:42 |
| R67.htm | 4324 | 2024-04-05 16:10:42 |
| R68.htm | 55165 | 2024-04-05 16:10:42 |
| R69.htm | 11172 | 2024-04-05 16:10:42 |
| R7.htm | 100799 | 2024-04-05 16:10:42 |
| R70.htm | 27513 | 2024-04-05 16:10:42 |
| R71.htm | 15979 | 2024-04-05 16:10:42 |
| R72.htm | 9283 | 2024-04-05 16:10:42 |
| R73.htm | 22205 | 2024-04-05 16:10:42 |
| R74.htm | 6682 | 2024-04-05 16:10:42 |
| R75.htm | 6338 | 2024-04-05 16:10:42 |
| R76.htm | 20009 | 2024-04-05 16:10:42 |
| R77.htm | 36876 | 2024-04-05 16:10:42 |
| R78.htm | 10631 | 2024-04-05 16:10:42 |
| R8.htm | 4741 | 2024-04-05 16:10:42 |
| R9.htm | 122108 | 2024-04-05 16:10:42 |
| report.css | 2767 | 2024-04-05 16:10:42 |
| Show.js | 1085 | 2024-04-05 16:10:42 |