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| 0001437749-20-009747-index.html | 2020-05-07 11:52:28 | |
| 0001437749-20-009747.txt | 2020-05-07 11:52:28 | |
 0001437749-20-009747-xbrl.zip | 149134 | 2020-05-07 11:52:28 |
| ex_182412.htm | 13629 | 2020-05-07 11:52:28 |
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| Financial_Report.xlsx | 57496 | 2020-05-07 11:52:28 |
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| gtn-20200331_cal.xml | 51866 | 2020-05-07 11:52:28 |
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| gtn-20200331_lab.xml | 352008 | 2020-05-07 11:52:28 |
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| gtn20200331_10q.htm | 1315887 | 2020-05-07 11:52:28 |
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| report.css | 2767 | 2020-05-07 11:52:28 |
| Show.js | 1085 | 2020-05-07 11:52:28 |