Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-13-089683-index-headers.html | 2013-03-04 16:22:15 | |
| 0001193125-13-089683-index.html | 2013-03-04 16:22:15 | |
| 0001193125-13-089683.txt | 2013-03-04 16:22:15 | |
 0001193125-13-089683-xbrl.zip | 131512 | 2013-03-04 16:22:15 |
| d493936d10k.htm | 127055 | 2013-03-04 16:22:15 |
| d493936dex13.htm | 691152 | 2013-03-04 16:22:15 |
| d493936dex14.htm | 13152 | 2013-03-04 16:22:15 |
| d493936dex21.htm | 5687 | 2013-03-04 16:22:15 |
| d493936dex23.htm | 2613 | 2013-03-04 16:22:15 |
| d493936dex24.htm | 16292 | 2013-03-04 16:22:15 |
| d493936dex31a.htm | 10010 | 2013-03-04 16:22:15 |
| d493936dex31b.htm | 9894 | 2013-03-04 16:22:15 |
| d493936dex32.htm | 4679 | 2013-03-04 16:22:15 |
| FilingSummary.xml | 26091 | 2013-03-04 16:22:15 |
| Financial_Report.xls | 1298257 | 2013-03-04 16:22:15 |
 g493936g27t10.jpg | 48478 | 2013-03-04 16:22:15 |
| grc-20121231.xml | 1622003 | 2013-03-04 16:22:15 |
| grc-20121231.xsd | 47846 | 2013-03-04 16:22:15 |
| grc-20121231_cal.xml | 38337 | 2013-03-04 16:22:15 |
| grc-20121231_def.xml | 281746 | 2013-03-04 16:22:15 |
| grc-20121231_lab.xml | 378264 | 2013-03-04 16:22:15 |
| grc-20121231_pre.xml | 290117 | 2013-03-04 16:22:15 |
| R1.htm | 37249 | 2013-03-04 16:22:15 |
| R10.htm | 6756 | 2013-03-04 16:22:15 |
| R11.htm | 5943 | 2013-03-04 16:22:15 |
| R12.htm | 21975 | 2013-03-04 16:22:15 |
| R13.htm | 40320 | 2013-03-04 16:22:15 |
| R14.htm | 141980 | 2013-03-04 16:22:15 |
| R15.htm | 242322 | 2013-03-04 16:22:15 |
| R16.htm | 42751 | 2013-03-04 16:22:15 |
| R17.htm | 32580 | 2013-03-04 16:22:15 |
| R18.htm | 13293 | 2013-03-04 16:22:15 |
| R19.htm | 102898 | 2013-03-04 16:22:15 |
| R2.htm | 45715 | 2013-03-04 16:22:15 |
| R20.htm | 18569 | 2013-03-04 16:22:15 |
| R21.htm | 16171 | 2013-03-04 16:22:15 |
| R22.htm | 40898 | 2013-03-04 16:22:15 |
| R23.htm | 145020 | 2013-03-04 16:22:15 |
| R24.htm | 234087 | 2013-03-04 16:22:15 |
| R25.htm | 37151 | 2013-03-04 16:22:15 |
| R26.htm | 27298 | 2013-03-04 16:22:15 |
| R27.htm | 29826 | 2013-03-04 16:22:15 |
| R28.htm | 10676 | 2013-03-04 16:22:15 |
| R29.htm | 4080 | 2013-03-04 16:22:15 |
| R3.htm | 28373 | 2013-03-04 16:22:15 |
| R30.htm | 9760 | 2013-03-04 16:22:15 |
| R31.htm | 30474 | 2013-03-04 16:22:15 |
| R32.htm | 29254 | 2013-03-04 16:22:15 |
| R33.htm | 23077 | 2013-03-04 16:22:15 |
| R34.htm | 24611 | 2013-03-04 16:22:15 |
| R35.htm | 10313 | 2013-03-04 16:22:15 |
| R36.htm | 51081 | 2013-03-04 16:22:15 |
| R37.htm | 27909 | 2013-03-04 16:22:15 |
| R38.htm | 47664 | 2013-03-04 16:22:15 |
| R39.htm | 18414 | 2013-03-04 16:22:15 |
| R4.htm | 133072 | 2013-03-04 16:22:15 |
| R40.htm | 60619 | 2013-03-04 16:22:15 |
| R41.htm | 106493 | 2013-03-04 16:22:15 |
| R42.htm | 20370 | 2013-03-04 16:22:15 |
| R43.htm | 14235 | 2013-03-04 16:22:15 |
| R44.htm | 19024 | 2013-03-04 16:22:15 |
| R45.htm | 12788 | 2013-03-04 16:22:15 |
| R46.htm | 11288 | 2013-03-04 16:22:15 |
| R47.htm | 5452 | 2013-03-04 16:22:15 |
| R48.htm | 9052 | 2013-03-04 16:22:15 |
| R49.htm | 8294 | 2013-03-04 16:22:15 |
| R5.htm | 14211 | 2013-03-04 16:22:15 |
| R6.htm | 53133 | 2013-03-04 16:22:15 |
| R7.htm | 14275 | 2013-03-04 16:22:15 |
| R8.htm | 113242 | 2013-03-04 16:22:15 |
| R9.htm | 46172 | 2013-03-04 16:22:15 |
| report.css | 2721 | 2013-03-04 16:22:15 |
| Show.js | 6423 | 2013-03-04 16:22:15 |