Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000860413-20-000007-index-headers.html | 2020-01-29 16:46:43 | |
| 0000860413-20-000007-index.html | 2020-01-29 16:46:43 | |
| 0000860413-20-000007.txt | 2020-01-29 16:46:43 | |
 0000860413-20-000007-xbrl.zip | 53903 | 2020-01-29 16:46:43 |
 fibbancsyst2line4ca24.jpg | 223148 | 2020-01-29 16:46:43 |
| fibk-20191231x8kpr.htm | 1146104 | 2020-01-29 16:46:43 |
| fibk-20200129.xsd | 4557 | 2020-01-29 16:46:43 |
| fibk-20200129x8k.htm | 50627 | 2020-01-29 16:46:43 |
| fibk-20200129x8k_htm.xml | 4255 | 2020-01-29 16:46:43 |
| fibk-20200129_cal.xml | 600 | 2020-01-29 16:46:43 |
| fibk-20200129_def.xml | 1450 | 2020-01-29 16:46:43 |
| fibk-20200129_lab.xml | 26142 | 2020-01-29 16:46:43 |
| fibk-20200129_pre.xml | 13556 | 2020-01-29 16:46:43 |
| FilingSummary.xml | 1727 | 2020-01-29 16:46:43 |
| Financial_Report.xlsx | 5791 | 2020-01-29 16:46:43 |
| MetaLinks.json | 18166 | 2020-01-29 16:46:43 |
| R1.htm | 38617 | 2020-01-29 16:46:43 |
| report.css | 2766 | 2020-01-29 16:46:43 |
| Show.js | 1085 | 2020-01-29 16:46:43 |