Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000104889-21-000045-index-headers.html | 2021-11-03 08:32:59 | |
| 0000104889-21-000045-index.html | 2021-11-03 08:32:59 | |
| 0000104889-21-000045.txt | 2021-11-03 08:32:59 | |
 0000104889-21-000045-xbrl.zip | 37770 | 2021-11-03 08:32:59 |
| a2021q38-kexhibit991.htm | 544937 | 2021-11-03 08:32:59 |
| FilingSummary.xml | 1640 | 2021-11-03 08:32:59 |
| Financial_Report.xlsx | 5679 | 2021-11-03 08:32:59 |
| ghc-20211103.htm | 40943 | 2021-11-03 08:32:59 |
| ghc-20211103.xsd | 1900 | 2021-11-03 08:32:59 |
| ghc-20211103_htm.xml | 11255 | 2021-11-03 08:32:59 |
| ghc-20211103_lab.xml | 24137 | 2021-11-03 08:32:59 |
| ghc-20211103_pre.xml | 12511 | 2021-11-03 08:32:59 |
| MetaLinks.json | 16512 | 2021-11-03 08:32:59 |
| R1.htm | 38587 | 2021-11-03 08:32:59 |
| report.css | 2767 | 2021-11-03 08:32:59 |
| Show.js | 1084 | 2021-11-03 08:32:59 |