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| 0001437749-18-008968-index.html | 2018-05-08 11:50:01 | |
| 0001437749-18-008968.txt | 2018-05-08 11:50:01 | |
 0001437749-18-008968-xbrl.zip | 119503 | 2018-05-08 11:50:01 |
| ex_111340.htm | 12290 | 2018-05-08 11:50:01 |
| ex_111341.htm | 11998 | 2018-05-08 11:50:01 |
| ex_111342.htm | 3719 | 2018-05-08 11:50:01 |
| ex_111343.htm | 3551 | 2018-05-08 11:50:01 |
| FilingSummary.xml | 27562 | 2018-05-08 11:50:01 |
| Financial_Report.xlsx | 50702 | 2018-05-08 11:50:01 |
| gtn-20180331.xml | 988876 | 2018-05-08 11:50:01 |
| gtn-20180331.xsd | 48436 | 2018-05-08 11:50:01 |
| gtn-20180331_cal.xml | 39696 | 2018-05-08 11:50:01 |
| gtn-20180331_def.xml | 347113 | 2018-05-08 11:50:01 |
| gtn-20180331_lab.xml | 306991 | 2018-05-08 11:50:01 |
| gtn-20180331_pre.xml | 368804 | 2018-05-08 11:50:01 |
| gtn20180331_10q.htm | 844328 | 2018-05-08 11:50:01 |
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| report.css | 2767 | 2018-05-08 11:50:01 |
| Show.js | 1410 | 2018-05-08 11:50:01 |