Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-25-095722-index-headers.html | 2025-07-15 09:00:47 | |
| 0000950170-25-095722-index.html | 2025-07-15 09:00:47 | |
| 0000950170-25-095722.txt | 2025-07-15 09:00:47 | |
 0000950170-25-095722-xbrl.zip | 4796603 | 2025-07-15 09:00:47 |
| FilingSummary.xml | 4877 | 2025-07-15 09:00:47 |
| ghm-20250715.htm | 2396726 | 2025-07-15 09:00:47 |
| ghm-20250715.xsd | 19249 | 2025-07-15 09:00:47 |
| ghm-20250715_htm.xml | 239459 | 2025-07-15 09:00:47 |
 img103319533_0.jpg | 1328645 | 2025-07-15 09:00:47 |
 img103319533_1.jpg | 89737 | 2025-07-15 09:00:47 |
 img103319533_10.jpg | 408717 | 2025-07-15 09:00:47 |
 img103319533_11.jpg | 157110 | 2025-07-15 09:00:47 |
 img103319533_12.jpg | 125121 | 2025-07-15 09:00:47 |
 img103319533_13.jpg | 106407 | 2025-07-15 09:00:47 |
 img103319533_14.jpg | 115156 | 2025-07-15 09:00:47 |
 img103319533_15.jpg | 104305 | 2025-07-15 09:00:47 |
 img103319533_16.jpg | 117658 | 2025-07-15 09:00:47 |
 img103319533_17.jpg | 97971 | 2025-07-15 09:00:47 |
 img103319533_18.jpg | 19569 | 2025-07-15 09:00:47 |
 img103319533_19.jpg | 24533 | 2025-07-15 09:00:47 |
 img103319533_2.jpg | 60452 | 2025-07-15 09:00:47 |
 img103319533_20.jpg | 19569 | 2025-07-15 09:00:47 |
 img103319533_21.jpg | 19569 | 2025-07-15 09:00:47 |
 img103319533_22.jpg | 24533 | 2025-07-15 09:00:47 |
 img103319533_23.jpg | 19569 | 2025-07-15 09:00:47 |
 img103319533_24.jpg | 19569 | 2025-07-15 09:00:47 |
 img103319533_25.jpg | 24533 | 2025-07-15 09:00:47 |
 img103319533_26.jpg | 19569 | 2025-07-15 09:00:47 |
 img103319533_27.jpg | 19569 | 2025-07-15 09:00:47 |
 img103319533_28.jpg | 19569 | 2025-07-15 09:00:47 |
 img103319533_29.jpg | 24533 | 2025-07-15 09:00:47 |
 img103319533_3.jpg | 72130 | 2025-07-15 09:00:47 |
 img103319533_30.jpg | 19569 | 2025-07-15 09:00:47 |
 img103319533_31.jpg | 133012 | 2025-07-15 09:00:47 |
 img103319533_32.jpg | 142135 | 2025-07-15 09:00:47 |
 img103319533_33.jpg | 124901 | 2025-07-15 09:00:47 |
 img103319533_34.jpg | 150871 | 2025-07-15 09:00:47 |
 img103319533_35.jpg | 499524 | 2025-07-15 09:00:47 |
 img103319533_36.jpg | 248221 | 2025-07-15 09:00:47 |
 img103319533_37.jpg | 314871 | 2025-07-15 09:00:47 |
 img103319533_38.jpg | 57292 | 2025-07-15 09:00:47 |
 img103319533_39.jpg | 829017 | 2025-07-15 09:00:47 |
 img103319533_4.jpg | 70375 | 2025-07-15 09:00:47 |
 img103319533_40.jpg | 162664 | 2025-07-15 09:00:47 |
 img103319533_41.jpg | 74022 | 2025-07-15 09:00:47 |
 img103319533_5.jpg | 47368 | 2025-07-15 09:00:47 |
 img103319533_6.jpg | 57292 | 2025-07-15 09:00:47 |
 img103319533_7.jpg | 41990 | 2025-07-15 09:00:47 |
 img103319533_8.jpg | 42056 | 2025-07-15 09:00:47 |
 img103319533_9.jpg | 51385 | 2025-07-15 09:00:47 |
| MetaLinks.json | 108958 | 2025-07-15 09:00:47 |
| R1.htm | 8932 | 2025-07-15 09:00:47 |
| R2.htm | 268284 | 2025-07-15 09:00:47 |
| R3.htm | 5669 | 2025-07-15 09:00:47 |
| R4.htm | 4370 | 2025-07-15 09:00:47 |
| report.css | 2767 | 2025-07-15 09:00:47 |
| Show.js | 1085 | 2025-07-15 09:00:47 |