Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000104889-20-000078-index-headers.html | 2020-12-08 17:09:14 | |
| 0000104889-20-000078-index.html | 2020-12-08 17:09:14 | |
| 0000104889-20-000078.txt | 2020-12-08 17:09:14 | |
 0000104889-20-000078-xbrl.zip | 13040 | 2020-12-08 17:09:14 |
| a2020-12x08form8xkex991.htm | 3137 | 2020-12-08 17:09:14 |
| FilingSummary.xml | 1724 | 2020-12-08 17:09:14 |
| Financial_Report.xlsx | 5458 | 2020-12-08 17:09:14 |
| ghc-20201208.htm | 41799 | 2020-12-08 17:09:14 |
| ghc-20201208.xsd | 2419 | 2020-12-08 17:09:14 |
| ghc-20201208_cal.xml | 713 | 2020-12-08 17:09:14 |
| ghc-20201208_def.xml | 1650 | 2020-12-08 17:09:14 |
| ghc-20201208_htm.xml | 11261 | 2020-12-08 17:09:14 |
| ghc-20201208_lab.xml | 24275 | 2020-12-08 17:09:14 |
| ghc-20201208_pre.xml | 12649 | 2020-12-08 17:09:14 |
| MetaLinks.json | 17251 | 2020-12-08 17:09:14 |
| R1.htm | 38626 | 2020-12-08 17:09:14 |
| report.css | 2767 | 2020-12-08 17:09:14 |
| Show.js | 1085 | 2020-12-08 17:09:14 |