Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001373670-20-000005-index-headers.html | 2020-03-06 09:00:24 | |
| 0001373670-20-000005-index.html | 2020-03-06 09:00:24 | |
| 0001373670-20-000005.txt | 2020-03-06 09:00:24 | |
 0001373670-20-000005-xbrl.zip | 402912 | 2020-03-06 09:00:24 |
| a201910-k.htm | 2390544 | 2020-03-06 09:00:24 |
| a201910-k_htm.xml | 2184151 | 2020-03-06 09:00:24 |
| exhibit102.htm | 157932 | 2020-03-06 09:00:24 |
 exhibit102001.jpg | 232516 | 2020-03-06 09:00:24 |
 exhibit102002.jpg | 279265 | 2020-03-06 09:00:24 |
 exhibit102003.jpg | 179249 | 2020-03-06 09:00:24 |
 exhibit102004.jpg | 280069 | 2020-03-06 09:00:24 |
 exhibit102005.jpg | 187581 | 2020-03-06 09:00:24 |
 exhibit102006.jpg | 172161 | 2020-03-06 09:00:24 |
 exhibit102007.jpg | 250510 | 2020-03-06 09:00:24 |
 exhibit102008.jpg | 227273 | 2020-03-06 09:00:24 |
 exhibit102009.jpg | 258306 | 2020-03-06 09:00:24 |
 exhibit102010.jpg | 253614 | 2020-03-06 09:00:24 |
 exhibit102011.jpg | 306873 | 2020-03-06 09:00:24 |
 exhibit102012.jpg | 280386 | 2020-03-06 09:00:24 |
 exhibit102013.jpg | 266061 | 2020-03-06 09:00:24 |
 exhibit102014.jpg | 270821 | 2020-03-06 09:00:24 |
 exhibit102015.jpg | 278280 | 2020-03-06 09:00:24 |
 exhibit102016.jpg | 271843 | 2020-03-06 09:00:24 |
 exhibit102017.jpg | 300837 | 2020-03-06 09:00:24 |
 exhibit102018.jpg | 298258 | 2020-03-06 09:00:24 |
 exhibit102019.jpg | 284978 | 2020-03-06 09:00:24 |
 exhibit102020.jpg | 274055 | 2020-03-06 09:00:24 |
 exhibit102021.jpg | 267292 | 2020-03-06 09:00:24 |
 exhibit102022.jpg | 308283 | 2020-03-06 09:00:24 |
 exhibit102023.jpg | 311430 | 2020-03-06 09:00:24 |
 exhibit102024.jpg | 273640 | 2020-03-06 09:00:24 |
 exhibit102025.jpg | 220771 | 2020-03-06 09:00:24 |
 exhibit102026.jpg | 221924 | 2020-03-06 09:00:24 |
 exhibit102027.jpg | 296679 | 2020-03-06 09:00:24 |
 exhibit102028.jpg | 287861 | 2020-03-06 09:00:24 |
 exhibit102029.jpg | 229136 | 2020-03-06 09:00:24 |
 exhibit102030.jpg | 245879 | 2020-03-06 09:00:24 |
 exhibit102031.jpg | 236954 | 2020-03-06 09:00:24 |
 exhibit102032.jpg | 289821 | 2020-03-06 09:00:24 |
 exhibit102033.jpg | 256431 | 2020-03-06 09:00:24 |
 exhibit102034.jpg | 208169 | 2020-03-06 09:00:24 |
 exhibit102035.jpg | 233993 | 2020-03-06 09:00:24 |
 exhibit102036.jpg | 236716 | 2020-03-06 09:00:24 |
 exhibit102037.jpg | 271024 | 2020-03-06 09:00:24 |
 exhibit102038.jpg | 249250 | 2020-03-06 09:00:24 |
 exhibit102039.jpg | 118632 | 2020-03-06 09:00:24 |
 exhibit102040.jpg | 58372 | 2020-03-06 09:00:24 |
 exhibit102041.jpg | 99479 | 2020-03-06 09:00:24 |
 exhibit102042.jpg | 59214 | 2020-03-06 09:00:24 |
 exhibit102043.jpg | 26569 | 2020-03-06 09:00:24 |
 exhibit102044.jpg | 186757 | 2020-03-06 09:00:24 |
| exhibit21listofsubsidi.htm | 82989 | 2020-03-06 09:00:24 |
| exhibit23consentofrsmu.htm | 3320 | 2020-03-06 09:00:24 |
| exhibit311certificatio.htm | 13420 | 2020-03-06 09:00:24 |
| exhibit312certificatio.htm | 13351 | 2020-03-06 09:00:24 |
| exhibit321certificatio.htm | 6429 | 2020-03-06 09:00:24 |
| exhibit322certificatio.htm | 6377 | 2020-03-06 09:00:24 |
| exhibit42.htm | 8619 | 2020-03-06 09:00:24 |
 exhibit42001.jpg | 196327 | 2020-03-06 09:00:24 |
 exhibit42002.jpg | 212856 | 2020-03-06 09:00:24 |
 exhibit42003.jpg | 133433 | 2020-03-06 09:00:24 |
| FilingSummary.xml | 17656 | 2020-03-06 09:00:24 |
| Financial_Report.xlsx | 88992 | 2020-03-06 09:00:24 |
| grbk-20191231.xsd | 34966 | 2020-03-06 09:00:24 |
| grbk-20191231_cal.xml | 92413 | 2020-03-06 09:00:24 |
| grbk-20191231_def.xml | 340512 | 2020-03-06 09:00:24 |
| grbk-20191231_lab.xml | 954269 | 2020-03-06 09:00:24 |
| grbk-20191231_pre.xml | 532585 | 2020-03-06 09:00:24 |
| MetaLinks.json | 740133 | 2020-03-06 09:00:24 |
| R1.htm | 64064 | 2020-03-06 09:00:24 |
| R10.htm | 289728 | 2020-03-06 09:00:24 |
| R11.htm | 76270 | 2020-03-06 09:00:24 |
| R12.htm | 271475 | 2020-03-06 09:00:24 |
| R13.htm | 214253 | 2020-03-06 09:00:24 |
| R14.htm | 50317 | 2020-03-06 09:00:24 |
| R15.htm | 70071 | 2020-03-06 09:00:24 |
| R16.htm | 22724 | 2020-03-06 09:00:24 |
| R17.htm | 223418 | 2020-03-06 09:00:24 |
| R18.htm | 43300 | 2020-03-06 09:00:24 |
| R19.htm | 25506 | 2020-03-06 09:00:24 |
| R2.htm | 85792 | 2020-03-06 09:00:24 |
| R20.htm | 10509 | 2020-03-06 09:00:24 |
| R21.htm | 8740 | 2020-03-06 09:00:24 |
| R22.htm | 180503 | 2020-03-06 09:00:24 |
| R23.htm | 306808 | 2020-03-06 09:00:24 |
| R24.htm | 247499 | 2020-03-06 09:00:24 |
| R25.htm | 7721 | 2020-03-06 09:00:24 |
| R26.htm | 90707 | 2020-03-06 09:00:24 |
| R27.htm | 134856 | 2020-03-06 09:00:24 |
| R28.htm | 114107 | 2020-03-06 09:00:24 |
| R3.htm | 12409 | 2020-03-06 09:00:24 |
| R4.htm | 59147 | 2020-03-06 09:00:24 |
| R5.htm | 110528 | 2020-03-06 09:00:24 |
| R6.htm | 105335 | 2020-03-06 09:00:24 |
| R7.htm | 64224 | 2020-03-06 09:00:24 |
| R8.htm | 263704 | 2020-03-06 09:00:24 |
| R9.htm | 47765 | 2020-03-06 09:00:24 |
| R9999.htm | 4024 | 2020-03-06 09:00:24 |
| report.css | 2767 | 2020-03-06 09:00:24 |
| Show.js | 1085 | 2020-03-06 09:00:24 |