Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000912562-22-000020-index-headers.html | 2022-05-05 14:40:16 | |
| 0000912562-22-000020-index.html | 2022-05-05 14:40:16 | |
| 0000912562-22-000020.txt | 2022-05-05 14:40:16 | |
 0000912562-22-000020-xbrl.zip | 21630 | 2022-05-05 14:40:16 |
| exhibit101-amended2016plan.htm | 39156 | 2022-05-05 14:40:16 |
| exhibit102-formofaward.htm | 16564 | 2022-05-05 14:40:16 |
| FilingSummary.xml | 1744 | 2022-05-05 14:40:16 |
| Financial_Report.xlsx | 5717 | 2022-05-05 14:40:16 |
| MetaLinks.json | 17484 | 2022-05-05 14:40:16 |
| R1.htm | 40311 | 2022-05-05 14:40:16 |
| report.css | 2767 | 2022-05-05 14:40:16 |
| rock-20220505.htm | 60535 | 2022-05-05 14:40:16 |
| rock-20220505.xsd | 2188 | 2022-05-05 14:40:16 |
| rock-20220505_htm.xml | 11011 | 2022-05-05 14:40:16 |
| rock-20220505_lab.xml | 25481 | 2022-05-05 14:40:16 |
| rock-20220505_pre.xml | 13214 | 2022-05-05 14:40:16 |
| Show.js | 1085 | 2022-05-05 14:40:16 |