Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000104889-20-000005-index-headers.html | 2020-02-26 09:15:41 | |
| 0000104889-20-000005-index.html | 2020-02-26 09:15:41 | |
| 0000104889-20-000005.txt | 2020-02-26 09:15:41 | |
 0000104889-20-000005-xbrl.zip | 48625 | 2020-02-26 09:15:41 |
| a2019q48-kearningsrele.htm | 52263 | 2020-02-26 09:15:41 |
| a2019q48-kearningsrele_htm.xml | 4254 | 2020-02-26 09:15:41 |
| a2019q4exhibit991.htm | 950343 | 2020-02-26 09:15:41 |
| FilingSummary.xml | 1753 | 2020-02-26 09:15:41 |
| Financial_Report.xlsx | 5792 | 2020-02-26 09:15:41 |
| ghc-20200226.xsd | 4565 | 2020-02-26 09:15:41 |
| ghc-20200226_cal.xml | 611 | 2020-02-26 09:15:41 |
| ghc-20200226_def.xml | 1461 | 2020-02-26 09:15:41 |
| ghc-20200226_lab.xml | 26142 | 2020-02-26 09:15:41 |
| ghc-20200226_pre.xml | 13567 | 2020-02-26 09:15:41 |
| MetaLinks.json | 18286 | 2020-02-26 09:15:41 |
| R1.htm | 38620 | 2020-02-26 09:15:41 |
| report.css | 2767 | 2020-02-26 09:15:41 |
| Show.js | 1085 | 2020-02-26 09:15:41 |