Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000860413-21-000158-index-headers.html | 2021-05-26 08:37:17 | |
| 0000860413-21-000158-index.html | 2021-05-26 08:37:17 | |
| 0000860413-21-000158.txt | 2021-05-26 08:37:17 | |
 0000860413-21-000158-xbrl.zip | 18037 | 2021-05-26 08:37:17 |
| fibk-20210526.htm | 37486 | 2021-05-26 08:37:17 |
| fibk-20210526.xsd | 1890 | 2021-05-26 08:37:17 |
| fibk-20210526_htm.xml | 10896 | 2021-05-26 08:37:17 |
| fibk-20210526_lab.xml | 24137 | 2021-05-26 08:37:17 |
| fibk-20210526_pre.xml | 12500 | 2021-05-26 08:37:17 |
| fibkshpres.htm | 22568 | 2021-05-26 08:37:17 |
 fibkshpres001.jpg | 153398 | 2021-05-26 08:37:17 |
 fibkshpres002.jpg | 265260 | 2021-05-26 08:37:17 |
 fibkshpres003.jpg | 123470 | 2021-05-26 08:37:17 |
 fibkshpres004.jpg | 71436 | 2021-05-26 08:37:17 |
 fibkshpres005.jpg | 111929 | 2021-05-26 08:37:17 |
 fibkshpres006.jpg | 109202 | 2021-05-26 08:37:17 |
 fibkshpres007.jpg | 70467 | 2021-05-26 08:37:17 |
 fibkshpres008.jpg | 95453 | 2021-05-26 08:37:17 |
 fibkshpres009.jpg | 102692 | 2021-05-26 08:37:17 |
 fibkshpres010.jpg | 66313 | 2021-05-26 08:37:17 |
 fibkshpres011.jpg | 126324 | 2021-05-26 08:37:17 |
 fibkshpres012.jpg | 124293 | 2021-05-26 08:37:17 |
 fibkshpres013.jpg | 96020 | 2021-05-26 08:37:17 |
 fibkshpres014.jpg | 101749 | 2021-05-26 08:37:17 |
 fibkshpres015.jpg | 143251 | 2021-05-26 08:37:17 |
 fibkshpres016.jpg | 131925 | 2021-05-26 08:37:17 |
 fibkshpres017.jpg | 79689 | 2021-05-26 08:37:17 |
 fibkshpres018.jpg | 137421 | 2021-05-26 08:37:17 |
 fibkshpres019.jpg | 64250 | 2021-05-26 08:37:17 |
 fibkshpres020.jpg | 122671 | 2021-05-26 08:37:17 |
 fibkshpres021.jpg | 142550 | 2021-05-26 08:37:17 |
| FilingSummary.xml | 1622 | 2021-05-26 08:37:17 |
| Financial_Report.xlsx | 5677 | 2021-05-26 08:37:17 |
| MetaLinks.json | 16583 | 2021-05-26 08:37:17 |
| R1.htm | 38581 | 2021-05-26 08:37:17 |
| report.css | 2767 | 2021-05-26 08:37:17 |
| Show.js | 1085 | 2021-05-26 08:37:17 |