Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000104889-20-000033-index-headers.html | 2020-05-08 12:10:36 | |
| 0000104889-20-000033-index.html | 2020-05-08 12:10:36 | |
| 0000104889-20-000033.txt | 2020-05-08 12:10:36 | |
 0000104889-20-000033-xbrl.zip | 13736 | 2020-05-08 12:10:36 |
| a2020-05x07form8xk.htm | 69308 | 2020-05-08 12:10:36 |
| a2020-05x07form8xk_htm.xml | 4355 | 2020-05-08 12:10:36 |
| FilingSummary.xml | 1697 | 2020-05-08 12:10:36 |
| Financial_Report.xlsx | 5798 | 2020-05-08 12:10:36 |
| ghc-20200507.xsd | 4427 | 2020-05-08 12:10:36 |
| ghc-20200507_cal.xml | 611 | 2020-05-08 12:10:36 |
| ghc-20200507_def.xml | 1461 | 2020-05-08 12:10:36 |
| ghc-20200507_lab.xml | 26147 | 2020-05-08 12:10:36 |
| ghc-20200507_pre.xml | 13567 | 2020-05-08 12:10:36 |
| MetaLinks.json | 18226 | 2020-05-08 12:10:36 |
| R1.htm | 38620 | 2020-05-08 12:10:36 |
| report.css | 2767 | 2020-05-08 12:10:36 |
| Show.js | 1085 | 2020-05-08 12:10:36 |