Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0000912562-22-000034-index.html | 2022-08-23 07:41:35 | |
| 0000912562-22-000034.txt | 2022-08-23 07:41:35 | |
 0000912562-22-000034-xbrl.zip | 14049 | 2022-08-23 07:41:35 |
| exhibit991qualityaluminump.htm | 11344 | 2022-08-23 07:41:35 |
| FilingSummary.xml | 1702 | 2022-08-23 07:41:35 |
| Financial_Report.xlsx | 5740 | 2022-08-23 07:41:35 |
 gibraltar_wordmarkxbluexrgb.jpg | 147573 | 2022-08-23 07:41:35 |
| MetaLinks.json | 17482 | 2022-08-23 07:41:35 |
| R1.htm | 39674 | 2022-08-23 07:41:35 |
| report.css | 2767 | 2022-08-23 07:41:35 |
| rock-20220823.htm | 33091 | 2022-08-23 07:41:35 |
| rock-20220823.xsd | 2188 | 2022-08-23 07:41:35 |
| rock-20220823_htm.xml | 11013 | 2022-08-23 07:41:35 |
| rock-20220823_lab.xml | 25481 | 2022-08-23 07:41:35 |
| rock-20220823_pre.xml | 13214 | 2022-08-23 07:41:35 |
| Show.js | 1085 | 2022-08-23 07:41:35 |