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| 0001373670-17-000020-index.html | 2017-08-07 16:08:24 | |
| 0001373670-17-000020.txt | 2017-08-07 16:08:24 | |
 0001373670-17-000020-xbrl.zip | 160470 | 2017-08-07 16:08:24 |
| a630201710-qgrbk.htm | 1047070 | 2017-08-07 16:08:24 |
| exhibit311certificationofc.htm | 13125 | 2017-08-07 16:08:24 |
| exhibit312certificationofc.htm | 13300 | 2017-08-07 16:08:24 |
| exhibit321certificationofc.htm | 6411 | 2017-08-07 16:08:24 |
| exhibit322certificationofc.htm | 6304 | 2017-08-07 16:08:24 |
| FilingSummary.xml | 26842 | 2017-08-07 16:08:24 |
| Financial_Report.xlsx | 65174 | 2017-08-07 16:08:24 |
| grbk-20170630.xml | 1134507 | 2017-08-07 16:08:24 |
| grbk-20170630.xsd | 40349 | 2017-08-07 16:08:24 |
| grbk-20170630_cal.xml | 47054 | 2017-08-07 16:08:24 |
| grbk-20170630_def.xml | 195024 | 2017-08-07 16:08:24 |
| grbk-20170630_lab.xml | 558581 | 2017-08-07 16:08:24 |
| grbk-20170630_pre.xml | 324743 | 2017-08-07 16:08:24 |
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| R9999.htm | 2527 | 2017-08-07 16:08:24 |
| report.css | 2767 | 2017-08-07 16:08:24 |
| Show.js | 1410 | 2017-08-07 16:08:24 |