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|---|---|---|
 0001437749-23-007647-index-headers.html | 2023-03-23 16:15:29 | |
| 0001437749-23-007647-index.html | 2023-03-23 16:15:29 | |
| 0001437749-23-007647.txt | 2023-03-23 16:15:29 | |
 0001437749-23-007647-xbrl.zip | 1321581 | 2023-03-23 16:15:29 |
 a01.jpg | 740996 | 2023-03-23 16:15:29 |
 a02.jpg | 730039 | 2023-03-23 16:15:29 |
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 chart02.jpg | 18606 | 2023-03-23 16:15:29 |
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| Financial_Report.xlsx | 11609 | 2023-03-23 16:15:29 |
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 g05.jpg | 33670 | 2023-03-23 16:15:29 |
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| gtn-20221231.xsd | 8724 | 2023-03-23 16:15:29 |
| gtn-20221231_def.xml | 11666 | 2023-03-23 16:15:29 |
| gtn-20221231_lab.xml | 23668 | 2023-03-23 16:15:29 |
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| gtn20230317_def14a.htm | 1012168 | 2023-03-23 16:15:29 |
| gtn20230317_def14a_htm.xml | 173452 | 2023-03-23 16:15:29 |
 hhhjr01.jpg | 4533 | 2023-03-23 16:15:29 |
 image01.jpg | 19773 | 2023-03-23 16:15:29 |
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| R1.htm | 10844 | 2023-03-23 16:15:29 |
| R2.htm | 190754 | 2023-03-23 16:15:29 |
| report.css | 2767 | 2023-03-23 16:15:29 |
| Show.js | 1085 | 2023-03-23 16:15:29 |