Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000860413-20-000116-index-headers.html | 2020-04-30 16:11:45 | |
| 0000860413-20-000116-index.html | 2020-04-30 16:11:45 | |
| 0000860413-20-000116.txt | 2020-04-30 16:11:45 | |
 0000860413-20-000116-xbrl.zip | 48817 | 2020-04-30 16:11:45 |
| fibk-20200331x8kpr.htm | 885005 | 2020-04-30 16:11:45 |
| fibk-20200430.xsd | 4419 | 2020-04-30 16:11:45 |
| fibk-20200430x8k.htm | 54135 | 2020-04-30 16:11:45 |
| fibk-20200430x8k_htm.xml | 4284 | 2020-04-30 16:11:45 |
| fibk-20200430_cal.xml | 600 | 2020-04-30 16:11:45 |
| fibk-20200430_def.xml | 1450 | 2020-04-30 16:11:45 |
| fibk-20200430_lab.xml | 26142 | 2020-04-30 16:11:45 |
| fibk-20200430_pre.xml | 13556 | 2020-04-30 16:11:45 |
 fibslogo2linea02.jpg | 165531 | 2020-04-30 16:11:45 |
| FilingSummary.xml | 1722 | 2020-04-30 16:11:45 |
| Financial_Report.xlsx | 5789 | 2020-04-30 16:11:45 |
| MetaLinks.json | 18109 | 2020-04-30 16:11:45 |
| R1.htm | 38612 | 2020-04-30 16:11:45 |
| report.css | 2767 | 2020-04-30 16:11:45 |
| Show.js | 1085 | 2020-04-30 16:11:45 |