Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-23-015258-index-headers.html | 2023-04-27 16:06:12 | |
| 0000950170-23-015258-index.html | 2023-04-27 16:06:12 | |
| 0000950170-23-015258.txt | 2023-04-27 16:06:12 | |
 0000950170-23-015258-xbrl.zip | 175891 | 2023-04-27 16:06:12 |
| FilingSummary.xml | 2261 | 2023-04-27 16:06:12 |
| Financial_Report.xlsx | 7538 | 2023-04-27 16:06:12 |
| grph-20221231.htm | 1067797 | 2023-04-27 16:06:12 |
| grph-20221231.xsd | 86405 | 2023-04-27 16:06:12 |
| grph-20221231_cal.xml | 57315 | 2023-04-27 16:06:12 |
| grph-20221231_def.xml | 337041 | 2023-04-27 16:06:12 |
| grph-20221231_htm.xml | 10342 | 2023-04-27 16:06:12 |
| grph-20221231_lab.xml | 683758 | 2023-04-27 16:06:12 |
| grph-20221231_pre.xml | 519463 | 2023-04-27 16:06:12 |
| grph-ex31_1.htm | 21171 | 2023-04-27 16:06:12 |
| grph-ex31_2.htm | 21159 | 2023-04-27 16:06:12 |
| MetaLinks.json | 498118 | 2023-04-27 16:06:12 |
| R1.htm | 69797 | 2023-04-27 16:06:12 |
| report.css | 2767 | 2023-04-27 16:06:12 |
| Show.js | 1085 | 2023-04-27 16:06:12 |