Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-22-025968-index-headers.html | 2022-11-04 12:46:24 | |
| 0001437749-22-025968-index.html | 2022-11-04 12:46:24 | |
| 0001437749-22-025968.txt | 2022-11-04 12:46:24 | |
 0001437749-22-025968-xbrl.zip | 166648 | 2022-11-04 12:46:24 |
| ex_435385.htm | 10901 | 2022-11-04 12:46:24 |
| ex_435386.htm | 10800 | 2022-11-04 12:46:24 |
| ex_435387.htm | 3541 | 2022-11-04 12:46:24 |
| ex_435388.htm | 3540 | 2022-11-04 12:46:24 |
| FilingSummary.xml | 39113 | 2022-11-04 12:46:24 |
| Financial_Report.xlsx | 83676 | 2022-11-04 12:46:24 |
| gtn-20220930.xsd | 60407 | 2022-11-04 12:46:24 |
| gtn-20220930_cal.xml | 62888 | 2022-11-04 12:46:24 |
| gtn-20220930_def.xml | 393534 | 2022-11-04 12:46:24 |
| gtn-20220930_lab.xml | 361526 | 2022-11-04 12:46:24 |
| gtn-20220930_pre.xml | 431101 | 2022-11-04 12:46:24 |
| gtn20220930_10q.htm | 1900330 | 2022-11-04 12:46:24 |
| gtn20220930_10q_htm.xml | 1580446 | 2022-11-04 12:46:24 |
| MetaLinks.json | 659513 | 2022-11-04 12:46:24 |
| R1.htm | 56341 | 2022-11-04 12:46:24 |
| R10.htm | 70959 | 2022-11-04 12:46:24 |
| R11.htm | 11611 | 2022-11-04 12:46:24 |
| R12.htm | 13505 | 2022-11-04 12:46:24 |
| R13.htm | 10263 | 2022-11-04 12:46:24 |
| R14.htm | 69233 | 2022-11-04 12:46:24 |
| R15.htm | 31475 | 2022-11-04 12:46:24 |
| R16.htm | 10050 | 2022-11-04 12:46:24 |
| R17.htm | 76444 | 2022-11-04 12:46:24 |
| R18.htm | 20765 | 2022-11-04 12:46:24 |
| R19.htm | 68175 | 2022-11-04 12:46:24 |
| R2.htm | 138972 | 2022-11-04 12:46:24 |
| R20.htm | 104274 | 2022-11-04 12:46:24 |
| R21.htm | 85140 | 2022-11-04 12:46:24 |
| R22.htm | 38735 | 2022-11-04 12:46:24 |
| R23.htm | 10539 | 2022-11-04 12:46:24 |
| R24.htm | 65749 | 2022-11-04 12:46:24 |
| R25.htm | 67311 | 2022-11-04 12:46:24 |
| R26.htm | 28844 | 2022-11-04 12:46:24 |
| R27.htm | 80494 | 2022-11-04 12:46:24 |
| R28.htm | 13434 | 2022-11-04 12:46:24 |
| R29.htm | 63681 | 2022-11-04 12:46:24 |
| R3.htm | 33065 | 2022-11-04 12:46:24 |
| R30.htm | 6705 | 2022-11-04 12:46:24 |
| R31.htm | 9517 | 2022-11-04 12:46:24 |
| R32.htm | 10836 | 2022-11-04 12:46:24 |
| R33.htm | 21789 | 2022-11-04 12:46:24 |
| R34.htm | 18859 | 2022-11-04 12:46:24 |
| R35.htm | 8554 | 2022-11-04 12:46:24 |
| R36.htm | 6350 | 2022-11-04 12:46:24 |
| R37.htm | 20778 | 2022-11-04 12:46:24 |
| R38.htm | 10795 | 2022-11-04 12:46:24 |
| R39.htm | 20418 | 2022-11-04 12:46:24 |
| R4.htm | 96175 | 2022-11-04 12:46:24 |
| R40.htm | 30184 | 2022-11-04 12:46:24 |
| R41.htm | 27551 | 2022-11-04 12:46:24 |
| R42.htm | 42348 | 2022-11-04 12:46:24 |
| R43.htm | 6528 | 2022-11-04 12:46:24 |
| R44.htm | 31731 | 2022-11-04 12:46:24 |
| R45.htm | 10654 | 2022-11-04 12:46:24 |
| R46.htm | 7179 | 2022-11-04 12:46:24 |
| R47.htm | 34111 | 2022-11-04 12:46:24 |
| R48.htm | 10034 | 2022-11-04 12:46:24 |
| R49.htm | 7924 | 2022-11-04 12:46:24 |
| R5.htm | 121870 | 2022-11-04 12:46:24 |
| R50.htm | 18668 | 2022-11-04 12:46:24 |
| R51.htm | 7618 | 2022-11-04 12:46:24 |
| R52.htm | 16957 | 2022-11-04 12:46:24 |
| R53.htm | 23615 | 2022-11-04 12:46:24 |
| R54.htm | 13892 | 2022-11-04 12:46:24 |
| R55.htm | 42838 | 2022-11-04 12:46:24 |
| R56.htm | 25659 | 2022-11-04 12:46:24 |
| R57.htm | 7282 | 2022-11-04 12:46:24 |
| R58.htm | 3421 | 2022-11-04 12:46:24 |
| R59.htm | 57008 | 2022-11-04 12:46:24 |
| R6.htm | 101181 | 2022-11-04 12:46:24 |
| R7.htm | 97251 | 2022-11-04 12:46:24 |
| R8.htm | 45370 | 2022-11-04 12:46:24 |
| R9.htm | 14642 | 2022-11-04 12:46:24 |
| report.css | 2767 | 2022-11-04 12:46:24 |
| Show.js | 1085 | 2022-11-04 12:46:24 |