Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000912562-22-000015-index-headers.html | 2022-05-04 07:40:27 | |
| 0000912562-22-000015-index.html | 2022-05-04 07:40:27 | |
| 0000912562-22-000015.txt | 2022-05-04 07:40:27 | |
 0000912562-22-000015-xbrl.zip | 39985 | 2022-05-04 07:40:27 |
| exhibit991q12022earningsre.htm | 620678 | 2022-05-04 07:40:27 |
| exhibit992sharerepurchase.htm | 7858 | 2022-05-04 07:40:27 |
| FilingSummary.xml | 1747 | 2022-05-04 07:40:27 |
| Financial_Report.xlsx | 5718 | 2022-05-04 07:40:27 |
 gibraltar_wordmarkxbluexrgba.jpg | 147573 | 2022-05-04 07:40:27 |
 image_0a.jpg | 85732 | 2022-05-04 07:40:27 |
| MetaLinks.json | 17484 | 2022-05-04 07:40:27 |
| R1.htm | 40313 | 2022-05-04 07:40:27 |
| report.css | 2767 | 2022-05-04 07:40:27 |
| rock-20220504.htm | 37304 | 2022-05-04 07:40:27 |
| rock-20220504.xsd | 2188 | 2022-05-04 07:40:27 |
| rock-20220504_htm.xml | 11013 | 2022-05-04 07:40:27 |
| rock-20220504_lab.xml | 25481 | 2022-05-04 07:40:27 |
| rock-20220504_pre.xml | 13214 | 2022-05-04 07:40:27 |
| Show.js | 1085 | 2022-05-04 07:40:27 |