Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000912562-22-000029-index-headers.html | 2022-08-03 07:43:00 | |
| 0000912562-22-000029-index.html | 2022-08-03 07:43:00 | |
| 0000912562-22-000029.txt | 2022-08-03 07:43:00 | |
 0000912562-22-000029-xbrl.zip | 40584 | 2022-08-03 07:43:00 |
| exhibit991q22022earningsre.htm | 756493 | 2022-08-03 07:43:00 |
| FilingSummary.xml | 1700 | 2022-08-03 07:43:00 |
| Financial_Report.xlsx | 5743 | 2022-08-03 07:43:00 |
 gibraltar_wordmarkxbluexrgb.jpg | 147573 | 2022-08-03 07:43:00 |
| MetaLinks.json | 17482 | 2022-08-03 07:43:00 |
| R1.htm | 40145 | 2022-08-03 07:43:00 |
| report.css | 2767 | 2022-08-03 07:43:00 |
| rock-20220803.htm | 34418 | 2022-08-03 07:43:00 |
| rock-20220803.xsd | 2188 | 2022-08-03 07:43:00 |
| rock-20220803_htm.xml | 11013 | 2022-08-03 07:43:00 |
| rock-20220803_lab.xml | 25481 | 2022-08-03 07:43:00 |
| rock-20220803_pre.xml | 13214 | 2022-08-03 07:43:00 |
| Show.js | 1085 | 2022-08-03 07:43:00 |