Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000868671-22-000091-index-headers.html | 2022-10-31 16:37:20 | |
| 0000868671-22-000091-index.html | 2022-10-31 16:37:20 | |
| 0000868671-22-000091.txt | 2022-10-31 16:37:20 | |
 0000868671-22-000091-xbrl.zip | 473239 | 2022-10-31 16:37:20 |
| FilingSummary.xml | 45106 | 2022-10-31 16:37:20 |
| Financial_Report.xlsx | 151728 | 2022-10-31 16:37:20 |
| gbci-09302022xex311.htm | 10105 | 2022-10-31 16:37:20 |
| gbci-09302022xex312.htm | 10102 | 2022-10-31 16:37:20 |
| gbci-09302022xex32.htm | 6865 | 2022-10-31 16:37:20 |
| gbci-20220930.htm | 4423853 | 2022-10-31 16:37:20 |
| gbci-20220930.xsd | 59216 | 2022-10-31 16:37:20 |
| gbci-20220930_cal.xml | 170320 | 2022-10-31 16:37:20 |
| gbci-20220930_def.xml | 294055 | 2022-10-31 16:37:20 |
| gbci-20220930_htm.xml | 3980612 | 2022-10-31 16:37:20 |
| gbci-20220930_lab.xml | 883725 | 2022-10-31 16:37:20 |
| gbci-20220930_pre.xml | 586107 | 2022-10-31 16:37:20 |
| MetaLinks.json | 892329 | 2022-10-31 16:37:20 |
| R1.htm | 51526 | 2022-10-31 16:37:20 |
| R10.htm | 177927 | 2022-10-31 16:37:20 |
| R11.htm | 464006 | 2022-10-31 16:37:20 |
| R12.htm | 138519 | 2022-10-31 16:37:20 |
| R13.htm | 15523 | 2022-10-31 16:37:20 |
| R14.htm | 29335 | 2022-10-31 16:37:20 |
| R15.htm | 39038 | 2022-10-31 16:37:20 |
| R16.htm | 29424 | 2022-10-31 16:37:20 |
| R17.htm | 16768 | 2022-10-31 16:37:20 |
| R18.htm | 38493 | 2022-10-31 16:37:20 |
| R19.htm | 26948 | 2022-10-31 16:37:20 |
| R2.htm | 113523 | 2022-10-31 16:37:20 |
| R20.htm | 25103 | 2022-10-31 16:37:20 |
| R21.htm | 171139 | 2022-10-31 16:37:20 |
| R22.htm | 119350 | 2022-10-31 16:37:20 |
| R23.htm | 92298 | 2022-10-31 16:37:20 |
| R24.htm | 174961 | 2022-10-31 16:37:20 |
| R25.htm | 475191 | 2022-10-31 16:37:20 |
| R26.htm | 90085 | 2022-10-31 16:37:20 |
| R27.htm | 17661 | 2022-10-31 16:37:20 |
| R28.htm | 15073 | 2022-10-31 16:37:20 |
| R29.htm | 37342 | 2022-10-31 16:37:20 |
| R3.htm | 15103 | 2022-10-31 16:37:20 |
| R30.htm | 11804 | 2022-10-31 16:37:20 |
| R31.htm | 12495 | 2022-10-31 16:37:20 |
| R32.htm | 38945 | 2022-10-31 16:37:20 |
| R33.htm | 26399 | 2022-10-31 16:37:20 |
| R34.htm | 24063 | 2022-10-31 16:37:20 |
| R35.htm | 157055 | 2022-10-31 16:37:20 |
| R36.htm | 57039 | 2022-10-31 16:37:20 |
| R37.htm | 54788 | 2022-10-31 16:37:20 |
| R38.htm | 74126 | 2022-10-31 16:37:20 |
| R39.htm | 16120 | 2022-10-31 16:37:20 |
| R4.htm | 110856 | 2022-10-31 16:37:20 |
| R40.htm | 47153 | 2022-10-31 16:37:20 |
| R41.htm | 21225 | 2022-10-31 16:37:20 |
| R42.htm | 21232 | 2022-10-31 16:37:20 |
| R43.htm | 31300 | 2022-10-31 16:37:20 |
| R44.htm | 32666 | 2022-10-31 16:37:20 |
| R45.htm | 63110 | 2022-10-31 16:37:20 |
| R46.htm | 12826 | 2022-10-31 16:37:20 |
| R47.htm | 43146 | 2022-10-31 16:37:20 |
| R48.htm | 37661 | 2022-10-31 16:37:20 |
| R49.htm | 66518 | 2022-10-31 16:37:20 |
| R5.htm | 51613 | 2022-10-31 16:37:20 |
| R50.htm | 74590 | 2022-10-31 16:37:20 |
| R51.htm | 33339 | 2022-10-31 16:37:20 |
| R52.htm | 52500 | 2022-10-31 16:37:20 |
| R53.htm | 18951 | 2022-10-31 16:37:20 |
| R54.htm | 9508 | 2022-10-31 16:37:20 |
| R55.htm | 12456 | 2022-10-31 16:37:20 |
| R56.htm | 16525 | 2022-10-31 16:37:20 |
| R57.htm | 15810 | 2022-10-31 16:37:20 |
| R58.htm | 37639 | 2022-10-31 16:37:20 |
| R59.htm | 15723 | 2022-10-31 16:37:20 |
| R6.htm | 52858 | 2022-10-31 16:37:20 |
| R60.htm | 7003 | 2022-10-31 16:37:20 |
| R61.htm | 7726 | 2022-10-31 16:37:20 |
| R62.htm | 7028 | 2022-10-31 16:37:20 |
| R63.htm | 43043 | 2022-10-31 16:37:20 |
| R64.htm | 32005 | 2022-10-31 16:37:20 |
| R65.htm | 41127 | 2022-10-31 16:37:20 |
| R66.htm | 36322 | 2022-10-31 16:37:20 |
| R67.htm | 7141 | 2022-10-31 16:37:20 |
| R68.htm | 74106 | 2022-10-31 16:37:20 |
| R69.htm | 14940 | 2022-10-31 16:37:20 |
| R7.htm | 4823 | 2022-10-31 16:37:20 |
| R70.htm | 29412 | 2022-10-31 16:37:20 |
| R71.htm | 39326 | 2022-10-31 16:37:20 |
| R8.htm | 126071 | 2022-10-31 16:37:20 |
| R9.htm | 98995 | 2022-10-31 16:37:20 |
| report.css | 2767 | 2022-10-31 16:37:20 |
| Show.js | 1085 | 2022-10-31 16:37:20 |