Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000860413-22-000195-index-headers.html | 2022-10-03 13:04:57 | |
| 0000860413-22-000195-index.html | 2022-10-03 13:04:57 | |
| 0000860413-22-000195.txt | 2022-10-03 13:04:57 | |
 0000860413-22-000195-xbrl.zip | 15024 | 2022-10-03 13:04:57 |
| fibk-20221003.htm | 42552 | 2022-10-03 13:04:57 |
| fibk-20221003.xsd | 1890 | 2022-10-03 13:04:57 |
| fibk-20221003xpr_leehayslip.htm | 9880 | 2022-10-03 13:04:57 |
| fibk-20221003_htm.xml | 10993 | 2022-10-03 13:04:57 |
| fibk-20221003_lab.xml | 24137 | 2022-10-03 13:04:57 |
| fibk-20221003_pre.xml | 12500 | 2022-10-03 13:04:57 |
 fibslogo2linea04a.jpg | 165531 | 2022-10-03 13:04:57 |
| FilingSummary.xml | 1652 | 2022-10-03 13:04:57 |
| Financial_Report.xlsx | 5701 | 2022-10-03 13:04:57 |
| MetaLinks.json | 16416 | 2022-10-03 13:04:57 |
| R1.htm | 38102 | 2022-10-03 13:04:57 |
| report.css | 2767 | 2022-10-03 13:04:57 |
| Show.js | 1085 | 2022-10-03 13:04:57 |