Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-17-111723-index-headers.html | 2017-04-05 16:07:11 | |
| 0001193125-17-111723-index.html | 2017-04-05 16:07:11 | |
| 0001193125-17-111723.txt | 2017-04-05 16:07:11 | |
 0001193125-17-111723-xbrl.zip | 149000 | 2017-04-05 16:07:11 |
| d349470d10q.htm | 850573 | 2017-04-05 16:07:11 |
| d349470dex101.htm | 11394 | 2017-04-05 16:07:11 |
| d349470dex311.htm | 9546 | 2017-04-05 16:07:11 |
| d349470dex312.htm | 9716 | 2017-04-05 16:07:11 |
| d349470dex321.htm | 4017 | 2017-04-05 16:07:11 |
| d349470dex322.htm | 4204 | 2017-04-05 16:07:11 |
| FilingSummary.xml | 37070 | 2017-04-05 16:07:11 |
| Financial_Report.xlsx | 69400 | 2017-04-05 16:07:11 |
| gbx-20170228.xml | 980090 | 2017-04-05 16:07:11 |
| gbx-20170228.xsd | 55240 | 2017-04-05 16:07:11 |
| gbx-20170228_cal.xml | 82932 | 2017-04-05 16:07:11 |
| gbx-20170228_def.xml | 359002 | 2017-04-05 16:07:11 |
| gbx-20170228_lab.xml | 472398 | 2017-04-05 16:07:11 |
| gbx-20170228_pre.xml | 418124 | 2017-04-05 16:07:11 |
| R1.htm | 22066 | 2017-04-05 16:07:11 |
| R10.htm | 10657 | 2017-04-05 16:07:11 |
| R11.htm | 14895 | 2017-04-05 16:07:11 |
| R12.htm | 5861 | 2017-04-05 16:07:11 |
| R13.htm | 11395 | 2017-04-05 16:07:11 |
| R14.htm | 15512 | 2017-04-05 16:07:11 |
| R15.htm | 13932 | 2017-04-05 16:07:11 |
| R16.htm | 28786 | 2017-04-05 16:07:11 |
| R17.htm | 30203 | 2017-04-05 16:07:11 |
| R18.htm | 5663 | 2017-04-05 16:07:11 |
| R19.htm | 42740 | 2017-04-05 16:07:11 |
| R2.htm | 69480 | 2017-04-05 16:07:11 |
| R20.htm | 84498 | 2017-04-05 16:07:11 |
| R21.htm | 13678 | 2017-04-05 16:07:11 |
| R22.htm | 30437 | 2017-04-05 16:07:11 |
| R23.htm | 7629 | 2017-04-05 16:07:11 |
| R24.htm | 6220 | 2017-04-05 16:07:11 |
| R25.htm | 9302 | 2017-04-05 16:07:11 |
| R26.htm | 14261 | 2017-04-05 16:07:11 |
| R27.htm | 10641 | 2017-04-05 16:07:11 |
| R28.htm | 14374 | 2017-04-05 16:07:11 |
| R29.htm | 14707 | 2017-04-05 16:07:11 |
| R3.htm | 12979 | 2017-04-05 16:07:11 |
| R30.htm | 29143 | 2017-04-05 16:07:11 |
| R31.htm | 31397 | 2017-04-05 16:07:11 |
| R32.htm | 39419 | 2017-04-05 16:07:11 |
| R33.htm | 84918 | 2017-04-05 16:07:11 |
| R34.htm | 25738 | 2017-04-05 16:07:11 |
| R35.htm | 31167 | 2017-04-05 16:07:11 |
| R36.htm | 13277 | 2017-04-05 16:07:11 |
| R37.htm | 27444 | 2017-04-05 16:07:11 |
| R38.htm | 17884 | 2017-04-05 16:07:11 |
| R39.htm | 46209 | 2017-04-05 16:07:11 |
| R4.htm | 68427 | 2017-04-05 16:07:11 |
| R40.htm | 23403 | 2017-04-05 16:07:11 |
| R41.htm | 12472 | 2017-04-05 16:07:11 |
| R42.htm | 14055 | 2017-04-05 16:07:11 |
| R43.htm | 40216 | 2017-04-05 16:07:11 |
| R44.htm | 13081 | 2017-04-05 16:07:11 |
| R45.htm | 21288 | 2017-04-05 16:07:11 |
| R46.htm | 22789 | 2017-04-05 16:07:11 |
| R47.htm | 23871 | 2017-04-05 16:07:11 |
| R48.htm | 18977 | 2017-04-05 16:07:11 |
| R49.htm | 5436 | 2017-04-05 16:07:11 |
| R5.htm | 30228 | 2017-04-05 16:07:11 |
| R50.htm | 13251 | 2017-04-05 16:07:11 |
| R51.htm | 21555 | 2017-04-05 16:07:11 |
| R52.htm | 27245 | 2017-04-05 16:07:11 |
| R53.htm | 4486 | 2017-04-05 16:07:11 |
| R54.htm | 38785 | 2017-04-05 16:07:11 |
| R55.htm | 9044 | 2017-04-05 16:07:11 |
| R56.htm | 14331 | 2017-04-05 16:07:11 |
| R57.htm | 6210 | 2017-04-05 16:07:11 |
| R58.htm | 43241 | 2017-04-05 16:07:11 |
| R59.htm | 28632 | 2017-04-05 16:07:11 |
| R6.htm | 6580 | 2017-04-05 16:07:11 |
| R60.htm | 31984 | 2017-04-05 16:07:11 |
| R61.htm | 38654 | 2017-04-05 16:07:11 |
| R7.htm | 71935 | 2017-04-05 16:07:11 |
| R8.htm | 110763 | 2017-04-05 16:07:11 |
| R9.htm | 16887 | 2017-04-05 16:07:11 |
| report.css | 2767 | 2017-04-05 16:07:11 |
| Show.js | 1410 | 2017-04-05 16:07:11 |