Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000104889-21-000058-index-headers.html | 2021-12-23 15:47:11 | |
| 0000104889-21-000058-index.html | 2021-12-23 15:47:11 | |
| 0000104889-21-000058.txt | 2021-12-23 15:47:11 | |
 0000104889-21-000058-xbrl.zip | 10845 | 2021-12-23 15:47:11 |
| FilingSummary.xml | 1605 | 2021-12-23 15:47:11 |
| Financial_Report.xlsx | 5676 | 2021-12-23 15:47:11 |
| ghc-20211221.htm | 40786 | 2021-12-23 15:47:11 |
| ghc-20211221.xsd | 1912 | 2021-12-23 15:47:11 |
| ghc-20211221_htm.xml | 11348 | 2021-12-23 15:47:11 |
| ghc-20211221_lab.xml | 24275 | 2021-12-23 15:47:11 |
| ghc-20211221_pre.xml | 12649 | 2021-12-23 15:47:11 |
| MetaLinks.json | 16831 | 2021-12-23 15:47:11 |
| R1.htm | 38625 | 2021-12-23 15:47:11 |
| report.css | 2766 | 2021-12-23 15:47:11 |
| Show.js | 1084 | 2021-12-23 15:47:11 |