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| 0001437749-18-014667-index.html | 2018-08-07 10:58:05 | |
| 0001437749-18-014667.txt | 2018-08-07 10:58:05 | |
 0001437749-18-014667-xbrl.zip | 131736 | 2018-08-07 10:58:05 |
| ex_119402.htm | 13259 | 2018-08-07 10:58:05 |
| ex_119403.htm | 11318 | 2018-08-07 10:58:05 |
| ex_119404.htm | 4001 | 2018-08-07 10:58:05 |
| ex_119405.htm | 3922 | 2018-08-07 10:58:05 |
| FilingSummary.xml | 28614 | 2018-08-07 10:58:05 |
| Financial_Report.xlsx | 52316 | 2018-08-07 10:58:05 |
| gtn-20180630.xml | 1241668 | 2018-08-07 10:58:05 |
| gtn-20180630.xsd | 48997 | 2018-08-07 10:58:05 |
| gtn-20180630_cal.xml | 37869 | 2018-08-07 10:58:05 |
| gtn-20180630_def.xml | 361218 | 2018-08-07 10:58:05 |
| gtn-20180630_lab.xml | 320880 | 2018-08-07 10:58:05 |
| gtn-20180630_pre.xml | 381177 | 2018-08-07 10:58:05 |
| gtn20180630_10q.htm | 878783 | 2018-08-07 10:58:05 |
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| R9.htm | 44319 | 2018-08-07 10:58:05 |
| report.css | 2767 | 2018-08-07 10:58:05 |
| Show.js | 1410 | 2018-08-07 10:58:05 |