Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001558370-19-006031-index-headers.html | 2019-07-09 09:45:21 | |
| 0001558370-19-006031-index.html | 2019-07-09 09:45:21 | |
| 0001558370-19-006031.txt | 2019-07-09 09:45:21 | |
 0001558370-19-006031-xbrl.zip | 148958 | 2019-07-09 09:45:21 |
| FilingSummary.xml | 25304 | 2019-07-09 09:45:21 |
| Financial_Report.xlsx | 65174 | 2019-07-09 09:45:21 |
| grif-20190531.xml | 1947500 | 2019-07-09 09:45:21 |
| grif-20190531.xsd | 47126 | 2019-07-09 09:45:21 |
| grif-20190531ex10679570d.htm | 25896 | 2019-07-09 09:45:21 |
| grif-20190531ex311c4e657.htm | 13468 | 2019-07-09 09:45:21 |
| grif-20190531ex312fa5e9a.htm | 13451 | 2019-07-09 09:45:21 |
| grif-20190531ex321416773.htm | 7602 | 2019-07-09 09:45:21 |
| grif-20190531ex3226f57c3.htm | 7974 | 2019-07-09 09:45:21 |
| grif-20190531x10q.htm | 1871012 | 2019-07-09 09:45:21 |
| grif-20190531_cal.xml | 69351 | 2019-07-09 09:45:21 |
| grif-20190531_def.xml | 181518 | 2019-07-09 09:45:21 |
| grif-20190531_lab.xml | 497710 | 2019-07-09 09:45:21 |
| grif-20190531_pre.xml | 335691 | 2019-07-09 09:45:21 |
| R1.htm | 29425 | 2019-07-09 09:45:21 |
| R10.htm | 118431 | 2019-07-09 09:45:21 |
| R11.htm | 90719 | 2019-07-09 09:45:21 |
| R12.htm | 67393 | 2019-07-09 09:45:21 |
| R13.htm | 7336 | 2019-07-09 09:45:21 |
| R14.htm | 383978 | 2019-07-09 09:45:21 |
| R15.htm | 119167 | 2019-07-09 09:45:21 |
| R16.htm | 9971 | 2019-07-09 09:45:21 |
| R17.htm | 5868 | 2019-07-09 09:45:21 |
| R18.htm | 40986 | 2019-07-09 09:45:21 |
| R19.htm | 114533 | 2019-07-09 09:45:21 |
| R2.htm | 57326 | 2019-07-09 09:45:21 |
| R20.htm | 88086 | 2019-07-09 09:45:21 |
| R21.htm | 63669 | 2019-07-09 09:45:21 |
| R22.htm | 392108 | 2019-07-09 09:45:21 |
| R23.htm | 114393 | 2019-07-09 09:45:21 |
| R24.htm | 20292 | 2019-07-09 09:45:21 |
| R25.htm | 18157 | 2019-07-09 09:45:21 |
| R26.htm | 24238 | 2019-07-09 09:45:21 |
| R27.htm | 95885 | 2019-07-09 09:45:21 |
| R28.htm | 117548 | 2019-07-09 09:45:21 |
| R29.htm | 35908 | 2019-07-09 09:45:21 |
| R3.htm | 12890 | 2019-07-09 09:45:21 |
| R30.htm | 16417 | 2019-07-09 09:45:21 |
| R31.htm | 10406 | 2019-07-09 09:45:21 |
| R32.htm | 78418 | 2019-07-09 09:45:21 |
| R33.htm | 29272 | 2019-07-09 09:45:21 |
| R34.htm | 18578 | 2019-07-09 09:45:21 |
| R35.htm | 33046 | 2019-07-09 09:45:21 |
| R36.htm | 13832 | 2019-07-09 09:45:21 |
| R37.htm | 5940 | 2019-07-09 09:45:21 |
| R38.htm | 34291 | 2019-07-09 09:45:21 |
| R39.htm | 34910 | 2019-07-09 09:45:21 |
| R4.htm | 50779 | 2019-07-09 09:45:21 |
| R40.htm | 39540 | 2019-07-09 09:45:21 |
| R41.htm | 20369 | 2019-07-09 09:45:21 |
| R5.htm | 19472 | 2019-07-09 09:45:21 |
| R6.htm | 35414 | 2019-07-09 09:45:21 |
| R7.htm | 4462 | 2019-07-09 09:45:21 |
| R8.htm | 75006 | 2019-07-09 09:45:21 |
| R9.htm | 29639 | 2019-07-09 09:45:21 |
| report.css | 2767 | 2019-07-09 09:45:21 |
| Show.js | 1085 | 2019-07-09 09:45:21 |