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| ex_549852.htm | 56955 | 2023-07-31 14:21:51 |
| FilingSummary.xml | 33955 | 2023-07-31 14:21:51 |
| Financial_Report.xlsx | 64280 | 2023-07-31 14:21:51 |
| grc-20230630.xsd | 47868 | 2023-07-31 14:21:51 |
| grc-20230630_cal.xml | 51092 | 2023-07-31 14:21:51 |
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| grc20230630_10q.htm | 1034344 | 2023-07-31 14:21:51 |
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| report.css | 2767 | 2023-07-31 14:21:51 |
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