Document Format Files
| Seq | Description | Document | Type | Size |
|---|---|---|---|---|
| 1 | DEF 14A | fibk-20240411.htm iXBRL | DEF 14A | 4288834 |
| 6 | GRAPHIC | fibk-20240411_g1.jpg | GRAPHIC | 48081 |
| 7 | GRAPHIC | fibk-20240411_g10.gif | GRAPHIC | 253233 |
| 8 | GRAPHIC | fibk-20240411_g11.jpg | GRAPHIC | 344242 |
| 9 | GRAPHIC | fibk-20240411_g12.jpg | GRAPHIC | 482833 |
| 10 | GRAPHIC | fibk-20240411_g13.jpg | GRAPHIC | 59383 |
| 11 | GRAPHIC | fibk-20240411_g14.jpg | GRAPHIC | 156014 |
| 12 | GRAPHIC | fibk-20240411_g15.jpg | GRAPHIC | 41947 |
| 13 | GRAPHIC | fibk-20240411_g16.jpg | GRAPHIC | 43034 |
| 14 | GRAPHIC | fibk-20240411_g17.jpg | GRAPHIC | 41140 |
| 15 | GRAPHIC | fibk-20240411_g18.jpg | GRAPHIC | 43893 |
| 16 | GRAPHIC | fibk-20240411_g19.jpg | GRAPHIC | 47642 |
| 17 | GRAPHIC | fibk-20240411_g2.jpg | GRAPHIC | 2013029 |
| 18 | GRAPHIC | fibk-20240411_g20.jpg | GRAPHIC | 43462 |
| 19 | GRAPHIC | fibk-20240411_g21.jpg | GRAPHIC | 42270 |
| 20 | GRAPHIC | fibk-20240411_g22.jpg | GRAPHIC | 42569 |
| 21 | GRAPHIC | fibk-20240411_g23.jpg | GRAPHIC | 45840 |
| 22 | GRAPHIC | fibk-20240411_g24.jpg | GRAPHIC | 46420 |
| 23 | GRAPHIC | fibk-20240411_g25.jpg | GRAPHIC | 44297 |
| 24 | GRAPHIC | fibk-20240411_g26.jpg | GRAPHIC | 43510 |
| 25 | GRAPHIC | fibk-20240411_g27.jpg | GRAPHIC | 42132 |
| 26 | GRAPHIC | fibk-20240411_g28.jpg | GRAPHIC | 43126 |
| 27 | GRAPHIC | fibk-20240411_g29.jpg | GRAPHIC | 77511 |
| 28 | GRAPHIC | fibk-20240411_g3.jpg | GRAPHIC | 449869 |
| 29 | GRAPHIC | fibk-20240411_g30.jpg | GRAPHIC | 66473 |
| 30 | GRAPHIC | fibk-20240411_g31.jpg | GRAPHIC | 68954 |
| 31 | GRAPHIC | fibk-20240411_g32.jpg | GRAPHIC | 50257 |
| 32 | GRAPHIC | fibk-20240411_g33.jpg | GRAPHIC | 43656 |
| 33 | GRAPHIC | fibk-20240411_g34.jpg | GRAPHIC | 41909 |
| 34 | GRAPHIC | fibk-20240411_g35.jpg | GRAPHIC | 43361 |
| 35 | GRAPHIC | fibk-20240411_g36.jpg | GRAPHIC | 44546 |
| 36 | GRAPHIC | fibk-20240411_g37.jpg | GRAPHIC | 41504 |
| 37 | GRAPHIC | fibk-20240411_g38.gif | GRAPHIC | 35245 |
| 38 | GRAPHIC | fibk-20240411_g39.gif | GRAPHIC | 31818 |
| 39 | GRAPHIC | fibk-20240411_g4.jpg | GRAPHIC | 7749 |
| 40 | GRAPHIC | fibk-20240411_g40.gif | GRAPHIC | 34528 |
| 41 | GRAPHIC | fibk-20240411_g41.gif | GRAPHIC | 205964 |
| 42 | GRAPHIC | fibk-20240411_g42.jpg | GRAPHIC | 343661 |
| 43 | GRAPHIC | fibk-20240411_g43.gif | GRAPHIC | 21116 |
| 44 | GRAPHIC | fibk-20240411_g44.gif | GRAPHIC | 27687 |
| 45 | GRAPHIC | fibk-20240411_g45.gif | GRAPHIC | 64300 |
| 46 | GRAPHIC | fibk-20240411_g46.gif | GRAPHIC | 59407 |
| 47 | GRAPHIC | fibk-20240411_g47.gif | GRAPHIC | 62501 |
| 48 | GRAPHIC | fibk-20240411_g48.jpg | GRAPHIC | 257823 |
| 49 | GRAPHIC | fibk-20240411_g49.jpg | GRAPHIC | 299716 |
| 50 | GRAPHIC | fibk-20240411_g5.jpg | GRAPHIC | 232649 |
| 51 | GRAPHIC | fibk-20240411_g50.jpg | GRAPHIC | 157092 |
| 52 | GRAPHIC | fibk-20240411_g6.jpg | GRAPHIC | 338940 |
| 53 | GRAPHIC | fibk-20240411_g7.gif | GRAPHIC | 69821 |
| 54 | GRAPHIC | fibk-20240411_g8.gif | GRAPHIC | 60688 |
| 55 | GRAPHIC | fibk-20240411_g9.gif | GRAPHIC | 140551 |
| Complete submission text file | 0000860413-24-000053.txt | 23567829 |
Data Files
| Seq | Description | Document | Type | Size |
|---|---|---|---|---|
| 2 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | fibk-20240411.xsd | EX-101.SCH | 4511 |
| 3 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | fibk-20240411_def.xml | EX-101.DEF | 6291 |
| 4 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | fibk-20240411_lab.xml | EX-101.LAB | 9629 |
| 5 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | fibk-20240411_pre.xml | EX-101.PRE | 5258 |
| 67 | EXTRACTED XBRL INSTANCE DOCUMENT | fibk-20240411_htm.xml | XML | 150024 |
IRS No.: 810331430 | State of Incorp.: DE | Fiscal Year End: 1231
Type: DEF 14A | Act: 34 | File No.: 001-34653 | Film No.: 24838794
SIC: 6022 State Commercial Banks
(CF Office: 02 Finance)
