Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000104889-23-000032-index-headers.html | 2023-05-03 08:32:32 | |
| 0000104889-23-000032-index.html | 2023-05-03 08:32:32 | |
| 0000104889-23-000032.txt | 2023-05-03 08:32:32 | |
 0000104889-23-000032-xbrl.zip | 33565 | 2023-05-03 08:32:32 |
| a2023q18-kexhibit991.htm | 473868 | 2023-05-03 08:32:32 |
| FilingSummary.xml | 1651 | 2023-05-03 08:32:32 |
| Financial_Report.xlsx | 5697 | 2023-05-03 08:32:32 |
| ghc-20230503.htm | 41967 | 2023-05-03 08:32:32 |
| ghc-20230503.xsd | 1900 | 2023-05-03 08:32:32 |
| ghc-20230503_htm.xml | 11373 | 2023-05-03 08:32:32 |
| ghc-20230503_lab.xml | 24137 | 2023-05-03 08:32:32 |
| ghc-20230503_pre.xml | 12511 | 2023-05-03 08:32:32 |
| MetaLinks.json | 17042 | 2023-05-03 08:32:32 |
| R1.htm | 38102 | 2023-05-03 08:32:32 |
| report.css | 2767 | 2023-05-03 08:32:32 |
| Show.js | 1084 | 2023-05-03 08:32:32 |