Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0000860413-12-000017-index.html | 2012-05-09 16:12:46 | |
| 0000860413-12-000017.txt | 2012-05-09 16:12:46 | |
 0000860413-12-000017-xbrl.zip | 121016 | 2012-05-09 16:12:46 |
| fibk-20120331.xml | 1323453 | 2012-05-09 16:12:46 |
| fibk-20120331.xsd | 17165 | 2012-05-09 16:12:46 |
| fibk-20120331x10q.htm | 1879763 | 2012-05-09 16:12:46 |
| fibk-20120331xex311.htm | 12375 | 2012-05-09 16:12:46 |
| fibk-20120331xex312.htm | 12350 | 2012-05-09 16:12:46 |
| fibk-20120331xex32.htm | 4822 | 2012-05-09 16:12:46 |
| fibk-20120331_cal.xml | 75539 | 2012-05-09 16:12:46 |
| fibk-20120331_def.xml | 130099 | 2012-05-09 16:12:46 |
| fibk-20120331_lab.xml | 301188 | 2012-05-09 16:12:46 |
| fibk-20120331_pre.xml | 164639 | 2012-05-09 16:12:46 |
| FilingSummary.xml | 11557 | 2012-05-09 16:12:46 |
| Financial_Report.xls | 1129330 | 2012-05-09 16:12:46 |
| R1.htm | 25019 | 2012-05-09 16:12:46 |
| R10.htm | 166491 | 2012-05-09 16:12:46 |
| R11.htm | 503668 | 2012-05-09 16:12:46 |
| R12.htm | 117984 | 2012-05-09 16:12:46 |
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| R18.htm | 8494 | 2012-05-09 16:12:46 |
| R19.htm | 43775 | 2012-05-09 16:12:46 |
| R2.htm | 169295 | 2012-05-09 16:12:46 |
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| R22.htm | 5793 | 2012-05-09 16:12:46 |
| R3.htm | 21899 | 2012-05-09 16:12:46 |
| R4.htm | 146678 | 2012-05-09 16:12:46 |
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| R9.htm | 9168 | 2012-05-09 16:12:46 |
| report.css | 2721 | 2012-05-09 16:12:46 |
| Show.js | 6423 | 2012-05-09 16:12:46 |