Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0000104889-22-000009-index.html | 2022-02-25 08:34:26 | |
| 0000104889-22-000009.txt | 2022-02-25 08:34:26 | |
 0000104889-22-000009-xbrl.zip | 42405 | 2022-02-25 08:34:26 |
| a2021q48-kexhibit991.htm | 614652 | 2022-02-25 08:34:26 |
| FilingSummary.xml | 1654 | 2022-02-25 08:34:26 |
| Financial_Report.xlsx | 5677 | 2022-02-25 08:34:26 |
| ghc-20220225.htm | 41519 | 2022-02-25 08:34:26 |
| ghc-20220225.xsd | 1900 | 2022-02-25 08:34:26 |
| ghc-20220225_htm.xml | 11389 | 2022-02-25 08:34:26 |
| ghc-20220225_lab.xml | 24137 | 2022-02-25 08:34:26 |
| ghc-20220225_pre.xml | 12511 | 2022-02-25 08:34:26 |
| MetaLinks.json | 16513 | 2022-02-25 08:34:26 |
| R1.htm | 38588 | 2022-02-25 08:34:26 |
| report.css | 2767 | 2022-02-25 08:34:26 |
| Show.js | 1084 | 2022-02-25 08:34:26 |