Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-22-070040-index-headers.html | 2022-03-09 08:45:55 | |
| 0001193125-22-070040-index.html | 2022-03-09 08:45:55 | |
| 0001193125-22-070040.txt | 2022-03-09 08:45:55 | |
 0001193125-22-070040-xbrl.zip | 34517 | 2022-03-09 08:45:55 |
| d320910d8k.htm | 34205 | 2022-03-09 08:45:55 |
| d320910d8k_htm.xml | 3256 | 2022-03-09 08:45:55 |
| d320910dex101.htm | 61636 | 2022-03-09 08:45:55 |
| d320910dex102.htm | 28482 | 2022-03-09 08:45:55 |
| d320910dex991.htm | 9660 | 2022-03-09 08:45:55 |
| FilingSummary.xml | 1804 | 2022-03-09 08:45:55 |
| Financial_Report.xlsx | 5665 | 2022-03-09 08:45:55 |
 g320910g0308050002998.jpg | 6876 | 2022-03-09 08:45:55 |
 g320910g0308050003530.jpg | 4916 | 2022-03-09 08:45:55 |
| ghm-20220307.xsd | 2862 | 2022-03-09 08:45:55 |
| ghm-20220307_lab.xml | 17235 | 2022-03-09 08:45:55 |
| ghm-20220307_pre.xml | 10817 | 2022-03-09 08:45:55 |
| MetaLinks.json | 17807 | 2022-03-09 08:45:55 |
| R1.htm | 38571 | 2022-03-09 08:45:55 |
| report.css | 2767 | 2022-03-09 08:45:55 |
| Show.js | 1085 | 2022-03-09 08:45:55 |