Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000850429-21-000020-index-headers.html | 2021-03-16 16:09:37 | |
| 0000850429-21-000020-index.html | 2021-03-16 16:09:37 | |
| 0000850429-21-000020.txt | 2021-03-16 16:09:37 | |
 0000850429-21-000020-xbrl.zip | 1365064 | 2021-03-16 16:09:37 |
| FilingSummary.xml | 72235 | 2021-03-16 16:09:37 |
| Financial_Report.xlsx | 191251 | 2021-03-16 16:09:37 |
| MetaLinks.json | 1405611 | 2021-03-16 16:09:37 |
| R1.htm | 47501 | 2021-03-16 16:09:37 |
| R10.htm | 16739 | 2021-03-16 16:09:37 |
| R100.htm | 20175 | 2021-03-16 16:09:37 |
| R101.htm | 4096 | 2021-03-16 16:09:37 |
| R102.htm | 20143 | 2021-03-16 16:09:37 |
| R103.htm | 34360 | 2021-03-16 16:09:37 |
| R11.htm | 73735 | 2021-03-16 16:09:37 |
| R12.htm | 73460 | 2021-03-16 16:09:37 |
| R13.htm | 46813 | 2021-03-16 16:09:37 |
| R14.htm | 124757 | 2021-03-16 16:09:37 |
| R15.htm | 99691 | 2021-03-16 16:09:37 |
| R16.htm | 8870 | 2021-03-16 16:09:37 |
| R17.htm | 185821 | 2021-03-16 16:09:37 |
| R18.htm | 26924 | 2021-03-16 16:09:37 |
| R19.htm | 13535 | 2021-03-16 16:09:37 |
| R2.htm | 12711 | 2021-03-16 16:09:37 |
| R20.htm | 95619 | 2021-03-16 16:09:37 |
| R21.htm | 74400 | 2021-03-16 16:09:37 |
| R22.htm | 21185 | 2021-03-16 16:09:37 |
| R23.htm | 18427 | 2021-03-16 16:09:37 |
| R24.htm | 163623 | 2021-03-16 16:09:37 |
| R25.htm | 206156 | 2021-03-16 16:09:37 |
| R26.htm | 6777 | 2021-03-16 16:09:37 |
| R27.htm | 23232 | 2021-03-16 16:09:37 |
| R28.htm | 155622 | 2021-03-16 16:09:37 |
| R29.htm | 6944 | 2021-03-16 16:09:37 |
| R3.htm | 122795 | 2021-03-16 16:09:37 |
| R30.htm | 7491 | 2021-03-16 16:09:37 |
| R31.htm | 23182 | 2021-03-16 16:09:37 |
| R32.htm | 91969 | 2021-03-16 16:09:37 |
| R33.htm | 88620 | 2021-03-16 16:09:37 |
| R34.htm | 189721 | 2021-03-16 16:09:37 |
| R35.htm | 28996 | 2021-03-16 16:09:37 |
| R36.htm | 13998 | 2021-03-16 16:09:37 |
| R37.htm | 98652 | 2021-03-16 16:09:37 |
| R38.htm | 75703 | 2021-03-16 16:09:37 |
| R39.htm | 56775 | 2021-03-16 16:09:37 |
| R4.htm | 15327 | 2021-03-16 16:09:37 |
| R40.htm | 20823 | 2021-03-16 16:09:37 |
| R41.htm | 19832 | 2021-03-16 16:09:37 |
| R42.htm | 147236 | 2021-03-16 16:09:37 |
| R43.htm | 212428 | 2021-03-16 16:09:37 |
| R44.htm | 155029 | 2021-03-16 16:09:37 |
| R45.htm | 17774 | 2021-03-16 16:09:37 |
| R46.htm | 25536 | 2021-03-16 16:09:37 |
| R47.htm | 54081 | 2021-03-16 16:09:37 |
| R48.htm | 10094 | 2021-03-16 16:09:37 |
| R49.htm | 16550 | 2021-03-16 16:09:37 |
| R5.htm | 85279 | 2021-03-16 16:09:37 |
| R50.htm | 33955 | 2021-03-16 16:09:37 |
| R51.htm | 39446 | 2021-03-16 16:09:37 |
| R52.htm | 30544 | 2021-03-16 16:09:37 |
| R53.htm | 149753 | 2021-03-16 16:09:37 |
| R54.htm | 38842 | 2021-03-16 16:09:37 |
| R55.htm | 43224 | 2021-03-16 16:09:37 |
| R56.htm | 14780 | 2021-03-16 16:09:37 |
| R57.htm | 182974 | 2021-03-16 16:09:37 |
| R58.htm | 26591 | 2021-03-16 16:09:37 |
| R59.htm | 22150 | 2021-03-16 16:09:37 |
| R6.htm | 30053 | 2021-03-16 16:09:37 |
| R60.htm | 26810 | 2021-03-16 16:09:37 |
| R61.htm | 31537 | 2021-03-16 16:09:37 |
| R62.htm | 40699 | 2021-03-16 16:09:37 |
| R63.htm | 17743 | 2021-03-16 16:09:37 |
| R64.htm | 22204 | 2021-03-16 16:09:37 |
| R65.htm | 10359 | 2021-03-16 16:09:37 |
| R66.htm | 13944 | 2021-03-16 16:09:37 |
| R67.htm | 41573 | 2021-03-16 16:09:37 |
| R68.htm | 52382 | 2021-03-16 16:09:37 |
| R69.htm | 14074 | 2021-03-16 16:09:37 |
| R7.htm | 12756 | 2021-03-16 16:09:37 |
| R70.htm | 13376 | 2021-03-16 16:09:37 |
| R71.htm | 46108 | 2021-03-16 16:09:37 |
| R72.htm | 19961 | 2021-03-16 16:09:37 |
| R73.htm | 47146 | 2021-03-16 16:09:37 |
| R74.htm | 11324 | 2021-03-16 16:09:37 |
| R75.htm | 41436 | 2021-03-16 16:09:37 |
| R76.htm | 68109 | 2021-03-16 16:09:37 |
| R77.htm | 29795 | 2021-03-16 16:09:37 |
| R78.htm | 6003 | 2021-03-16 16:09:37 |
| R79.htm | 26268 | 2021-03-16 16:09:37 |
| R8.htm | 100026 | 2021-03-16 16:09:37 |
| R80.htm | 17583 | 2021-03-16 16:09:37 |
| R81.htm | 5715 | 2021-03-16 16:09:37 |
| R82.htm | 85937 | 2021-03-16 16:09:37 |
| R83.htm | 41039 | 2021-03-16 16:09:37 |
| R84.htm | 74929 | 2021-03-16 16:09:37 |
| R85.htm | 46507 | 2021-03-16 16:09:37 |
| R86.htm | 30231 | 2021-03-16 16:09:37 |
| R87.htm | 75663 | 2021-03-16 16:09:37 |
| R88.htm | 35132 | 2021-03-16 16:09:37 |
| R89.htm | 21885 | 2021-03-16 16:09:37 |
| R9.htm | 66118 | 2021-03-16 16:09:37 |
| R90.htm | 9498 | 2021-03-16 16:09:37 |
| R91.htm | 23531 | 2021-03-16 16:09:37 |
| R92.htm | 21523 | 2021-03-16 16:09:37 |
| R93.htm | 59345 | 2021-03-16 16:09:37 |
| R94.htm | 23060 | 2021-03-16 16:09:37 |
| R95.htm | 76110 | 2021-03-16 16:09:37 |
| R96.htm | 38408 | 2021-03-16 16:09:37 |
| R97.htm | 81499 | 2021-03-16 16:09:37 |
| R98.htm | 60681 | 2021-03-16 16:09:37 |
| R99.htm | 14233 | 2021-03-16 16:09:37 |
| report.css | 2768 | 2021-03-16 16:09:37 |
| Show.js | 1086 | 2021-03-16 16:09:37 |
| tg-20201231.htm | 4310953 | 2021-03-16 16:09:37 |
| tg-20201231.xsd | 160636 | 2021-03-16 16:09:37 |
| tg-20201231_cal.xml | 181962 | 2021-03-16 16:09:37 |
| tg-20201231_def.xml | 905508 | 2021-03-16 16:09:37 |
 tg-20201231_g1.jpg | 64765 | 2021-03-16 16:09:37 |
 tg-20201231_g2.jpg | 131960 | 2021-03-16 16:09:37 |
 tg-20201231_g3.jpg | 127131 | 2021-03-16 16:09:37 |
 tg-20201231_g4.jpg | 129516 | 2021-03-16 16:09:37 |
 tg-20201231_g5.jpg | 127316 | 2021-03-16 16:09:37 |
 tg-20201231_g6.jpg | 151051 | 2021-03-16 16:09:37 |
 tg-20201231_g7.jpg | 151515 | 2021-03-16 16:09:37 |
| tg-20201231_htm.xml | 4188188 | 2021-03-16 16:09:37 |
| tg-20201231_lab.xml | 1720560 | 2021-03-16 16:09:37 |
| tg-20201231_pre.xml | 1255312 | 2021-03-16 16:09:37 |
| tg-ex21_20201231x10k.htm | 14710 | 2021-03-16 16:09:37 |
| tg-ex23_20201231x10k.htm | 4261 | 2021-03-16 16:09:37 |
| tg-ex311_20201231x10k.htm | 10577 | 2021-03-16 16:09:37 |
| tg-ex312_20201231x10k.htm | 10235 | 2021-03-16 16:09:37 |
| tg-ex321_20201231x10k.htm | 4696 | 2021-03-16 16:09:37 |
| tg-ex322_20201231x10k.htm | 4741 | 2021-03-16 16:09:37 |