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|---|---|---|
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| 0000912562-22-000031-index.html | 2022-08-03 11:51:11 | |
| 0000912562-22-000031.txt | 2022-08-03 11:51:11 | |
 0000912562-22-000031-xbrl.zip | 361353 | 2022-08-03 11:51:11 |
| FilingSummary.xml | 40414 | 2022-08-03 11:51:11 |
| Financial_Report.xlsx | 86752 | 2022-08-03 11:51:11 |
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| q22022exhibit311.htm | 10635 | 2022-08-03 11:51:11 |
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| q22022exhibit321.htm | 4537 | 2022-08-03 11:51:11 |
| q22022exhibit322.htm | 4582 | 2022-08-03 11:51:11 |
| R1.htm | 53733 | 2022-08-03 11:51:11 |
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| report.css | 2767 | 2022-08-03 11:51:11 |
| rock-20220630.htm | 1693047 | 2022-08-03 11:51:11 |
| rock-20220630.xsd | 41175 | 2022-08-03 11:51:11 |
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| rock-20220630_def.xml | 203379 | 2022-08-03 11:51:11 |
 rock-20220630_g1.jpg | 147573 | 2022-08-03 11:51:11 |
| rock-20220630_htm.xml | 1490759 | 2022-08-03 11:51:11 |
| rock-20220630_lab.xml | 508022 | 2022-08-03 11:51:11 |
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| Show.js | 1085 | 2022-08-03 11:51:11 |