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| 0000104889-24-000066.txt | 2024-10-30 08:32:30 | |
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| a2024q38-kexhibit991.htm | 582632 | 2024-10-30 08:32:30 |
| FilingSummary.xml | 1626 | 2024-10-30 08:32:30 |
| Financial_Report.xlsx | 5695 | 2024-10-30 08:32:30 |
| ghc-20241030.htm | 32282 | 2024-10-30 08:32:30 |
| ghc-20241030.xsd | 1783 | 2024-10-30 08:32:30 |
| ghc-20241030_htm.xml | 2728 | 2024-10-30 08:32:30 |
| ghc-20241030_lab.xml | 21885 | 2024-10-30 08:32:30 |
| ghc-20241030_pre.xml | 12513 | 2024-10-30 08:32:30 |
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| R1.htm | 38101 | 2024-10-30 08:32:30 |
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| Show.js | 1084 | 2024-10-30 08:32:30 |