US StockDetailed Quotes

Provided by Tiger Trade Technology Pte. Ltd.

First Interstate BancSystem

32.81

-0.6900-2.06%

Post-market: 32.810.00000.00%16:34 EDT

Volume:1.16M

Turnover:38.20M

Market Cap:3.32B

PE:11.16

High:33.51

Open:33.26

Low:32.73

Close:33.50

52wk High:39.26

52wk Low:22.95

Shares:101.11M

Float Shares:84.50M

Volume Ratio:0.75

T/O Rate:1.37%

Dividend:1.88

Dividend Rate:5.73%

EPS(TTM):2.94

EPS(LYR):2.95

ROE:8.95%

ROA:1.08%

PB:0.96

PE(LYR):11.14

Loading ...

Overview Company News Filings

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Annual Report

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

Beneficial Ownership Change

Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Major Issues Report

Form 8-K - Current report

Beneficial Ownership Change

Form SC 13G - Statement of acquisition of beneficial ownership by individuals

Beneficial Ownership Change

Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend]

Major Issues Report

Form 8-K - Current report

Major Issues Report

Form 8-K - Current report

Major Issues Report

Form 8-K - Current report

Quarterly Report

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Major Issues Report

Form 8-K - Current report

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities

Major Issues Report

Form 8-K - Current report

Quarterly Report

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Major Issues Report

Form 8-K - Current report

{"basename":"","ssrTDKData":{"titleTemplate":"%s - Tiger Brokers","title":"Tiger Brokers | Global Stocks, Options & Futures Trading App","description":"Tiger Brokers, one-stop investment in US stocks, SGX stocks, HK stocks, A-shares & other global assets. One of the best stock trading platforms in Singapore.","keywords":"tiger brokers,tiger trade,tiger brokers singapore,broker online,stock trading in singapore,share trading singapore,brokerage firm singapore,trading app,stock broker singapore,stock trading platforms,trading account","social":{"ogDescription":"Tiger Brokers, one-stop investment in US stocks, SGX stocks, HK stocks, A-shares & other global assets. One of the best stock trading platforms in Singapore.","ogImage":"https://c1.itigergrowtha.com/portal5/static/media/og-logo.be62fbe1.png","ogUrl":"https://www-web.itiger.com/stock/FIBK/filings?page=5"},"companyName":"Tiger Brokers"},"pageData":{"isMobile":false,"isTiger":false,"isTTM":true,"region":"SGP","license":"TBSG","edition":"fundamental","symbol":"FIBK","isAnalysisPage":false},"__swrFallback__":{"@#url:\"https://hq.skytigris.cn/stock_info/detail/global\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"FIBK\",,,,,undefined,":{"symbol":"FIBK","market":"US","secType":"STK","nameCN":"First Interstate BancSystem","latestPrice":32.81,"timestamp":1774641600000,"preClose":33.5,"halted":0,"volume":1155198,"hourTrading":{"tag":"盘后","latestPrice":32.81,"preClose":32.81,"latestTime":"16:34 EDT","volume":51344,"amount":1684604.92,"timestamp":1774643652594,"change":0,"changeRate":0,"amplitude":0.001829},"delay":0,"changeRate":-0.020597014925373067,"floatShares":84501539,"shares":101106000,"eps":2.94,"marketStatus":"Market Closed","change":-0.69,"latestTime":"03-27 16:00:00 EDT","open":33.26,"high":33.51,"low":32.73,"amount":38203595.800326,"amplitude":0.023284,"askPrice":0,"askSize":0,"bidPrice":0,"bidSize":0,"shortable":3,"etf":0,"ttmEps":2.94,"tradingStatus":0,"nextMarketStatus":{"tag":"Pre-Mkt","tradingStatus":1,"beginTime":1774857600000},"marketStatusCode":7,"adr":0,"adrRate":0,"listingDate":1269403200000,"exchange":"NASDAQ","adjPreClose":33.5,"dividendRate":0.057278,"preHourTrading":{"tag":"盘前","latestPrice":33.49,"preClose":33.5,"latestTime":"08:31 EDT","volume":622,"amount":20812.651188,"timestamp":1774614695895,"change":-0.01,"changeRate":-0.000299,"amplitude":0.013134},"postHourTrading":{"tag":"盘后","latestPrice":32.81,"preClose":32.81,"latestTime":"16:34 EDT","volume":51344,"amount":1684604.92,"timestamp":1774643652594,"change":0,"changeRate":0,"amplitude":0.001829},"volumeRatio":0.749396,"impliedVol":0.3702,"impliedVolPercentile":0.3546},"@#url:\"https://hq.skytigris.cn/stock_info/fundamental/all\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"FIBK\",,,,,undefined,":{"symbol":"FIBK","floatShares":84501539,"roa":"1.08%","roe":"8.95%","lyrEps":2.945305,"volumeRatio":0.749396,"shares":101106000,"dividePrice":1.8793,"high":33.51,"amplitude":0.023284,"preClose":33.5,"low":32.73,"week52Low":22.95,"pbRate":"0.96","psRate":"3.21","week52High":39.255,"institutionHeld":0,"latestPrice":32.81,"eps":2.94,"divideRate":0.057278,"volume":1155198,"delay":0,"ttmEps":2.94,"open":33.26,"prevYearClose":34.6,"prevWeekClose":32.48,"prevMonthClose":34.61,"prevQuarterClose":34.6,"fiveDayClose":32.48,"twentyDayClose":34.61,"sixtyDayClose":35.15,"dividendPayoutRate":0.6383018454732345,"dividendFrequency":"Q","dividendGrowthYears":4,"dividendGrowthRate":0,"fiveYearAvgDividendRate":0.05136604012703498},"@#url:\"https://hq.skytigris.cn/fundamental/corporate_actions/details/FIBK\",params:#limit:5,,,undefined,":[{"date":"2026-02-10","symbol":"FIBK","amount":0.47,"announcedDate":"2026-01-28","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2026-02-10","defaultRemindTime":1770733800000,"name":"First Interstate BancSystem","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2026-02-20","payableDate":"2026-02-10","currency":"USD","dateTimestamp":1770699600000,"payDate":"2026-02-20"},{"market":"US","date":"2026-01-28","symbol":"FIBK","fiscalQuarterEnding":"2025/12","expectedEps":0.64,"name":null,"time":"Post Market","type":"earning","dateTimestamp":1769576400000,"reportTimeType":"post","actualEps":0.5},{"date":"2025-11-10","symbol":"FIBK","amount":0.47,"announcedDate":"2025-10-28","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2025-11-10","defaultRemindTime":1762785000000,"name":"First Interstate BancSystem","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2025-11-20","payableDate":"2025-11-10","currency":"USD","dateTimestamp":1762750800000,"payDate":"2025-11-20"},{"market":"US","date":"2025-10-29","symbol":"FIBK","fiscalQuarterEnding":"2025/09","expectedEps":0.59,"name":null,"time":"Post Market","type":"earning","dateTimestamp":1761710400000,"reportTimeType":"post","actualEps":0.69},{"date":"2025-08-11","symbol":"FIBK","amount":0.47,"announcedDate":"2025-07-29","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2025-08-11","defaultRemindTime":1754919000000,"name":"First Interstate BancSystem","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2025-08-21","payableDate":"2025-08-11","currency":"USD","dateTimestamp":1754884800000,"payDate":"2025-08-21"}],"@#url:\"https://hq.skytigris.cn/fundamental/dividend/history\",params:#symbol:\"FIBK\",market:\"US\",,,undefined,":[{"executeDate":"2016-04-28","recordDate":"2016-05-02","paymentDate":"2016-05-13","value":0.22,"currency":"USD"},{"executeDate":"2016-07-28","recordDate":"2016-08-01","paymentDate":"2016-08-12","value":0.22,"currency":"USD"},{"executeDate":"2016-10-27","recordDate":"2016-10-31","paymentDate":"2016-11-14","value":0.22,"currency":"USD"},{"executeDate":"2017-01-26","recordDate":"2017-01-30","paymentDate":"2017-02-10","value":0.24,"currency":"USD"},{"executeDate":"2017-04-28","recordDate":"2017-05-02","paymentDate":"2017-05-12","value":0.24,"currency":"USD"}],"@#url:\"https://hq.skytigris.cn/fundamental/estimate/recommendation\",params:#symbol:\"FIBK\",market:\"US\",delay:false,,,undefined,":{"strongBuy":0.125,"buy":0.375,"hold":0.375,"sell":0.125,"strongSell":0,"meanLabel":"BUY","meanPercent":0.375,"analysts":8,"updateTime":1772164800000},"@#url:\"https://hq.skytigris.cn/value_analysis/stock/FIBK\",params:#withQuantilePoint:true,period:\"5year\",factor:\"peRate\",delay:false,algorithm:1,,,undefined,":{"brief":{"id":"FIBK","date":"2026-03-27","current":11.159864,"percent":0.229064,"low":7.787967,"twenty":11.001539,"median":13.641962,"eighty":16.234209,"high":41.062658,"avg":15.813549,"sd":7.509231,"marketCap":3387463117},"quantilePoints":[{"date":"2021-04-01","current":17.913449,"twenty":14.436547,"median":16.371263,"eighty":21.419799,"marketCap":2887647962},{"date":"2021-04-09","current":18.136789,"twenty":14.43276,"median":16.388083,"eighty":21.419799,"marketCap":2923650451},{"date":"2021-04-16","current":18.333175,"twenty":14.43276,"median":16.399133,"eighty":21.419799,"marketCap":2955307813},{"date":"2021-04-23","current":18.714394,"twenty":14.43276,"median":16.410989,"eighty":21.419799,"marketCap":3016760338},{"date":"2021-04-30","current":15.946313,"twenty":14.43276,"median":16.413951,"eighty":21.419799,"marketCap":2922959210},{"date":"2021-05-07","current":16.231493,"twenty":14.478778,"median":16.413951,"eighty":21.419799,"marketCap":2975232698},{"date":"2021-05-14","current":16.143223,"twenty":14.555719,"median":16.413951,"eighty":21.419799,"marketCap":2959052809},{"date":"2021-05-21","current":15.718848,"twenty":14.56927,"median":16.413951,"eighty":21.419799,"marketCap":2881264880},{"date":"2021-05-28","current":15.980263,"twenty":14.56927,"median":16.413951,"eighty":21.419799,"marketCap":2929182245},{"date":"2021-06-04","current":15.807118,"twenty":14.56927,"median":16.413951,"eighty":21.419799,"marketCap":2897444770},{"date":"2021-06-11","current":15.406508,"twenty":14.56927,"median":16.413951,"eighty":21.419799,"marketCap":2824012965},{"date":"2021-06-18","current":14.014558,"twenty":14.574294,"median":16.413951,"eighty":21.419799,"marketCap":2568868559},{"date":"2021-06-25","current":14.676583,"twenty":14.574294,"median":16.413951,"eighty":21.419799,"marketCap":2690217727},{"date":"2021-07-02","current":14.225048,"twenty":14.555719,"median":16.413951,"eighty":21.419799,"marketCap":2607451371},{"date":"2021-07-09","current":14.506833,"twenty":14.502602,"median":16.413951,"eighty":21.419799,"marketCap":2659102556},{"date":"2021-07-16","current":14.449118,"twenty":14.449118,"median":16.413951,"eighty":21.419799,"marketCap":2648523398},{"date":"2021-07-23","current":14.167333,"twenty":14.41826,"median":16.413951,"eighty":21.419799,"marketCap":2596872213},{"date":"2021-07-30","current":13.795325,"twenty":14.393794,"median":16.413951,"eighty":21.419799,"marketCap":2608695978},{"date":"2021-08-06","current":14.524915,"twenty":14.373679,"median":16.413951,"eighty":21.419799,"marketCap":2746661394},{"date":"2021-08-13","current":14.70265,"twenty":14.373679,"median":16.413951,"eighty":21.419799,"marketCap":2780271118},{"date":"2021-08-20","current":14.969253,"twenty":14.373679,"median":16.413951,"eighty":21.419799,"marketCap":2830685705},{"date":"2021-08-27","current":14.93963,"twenty":14.373679,"median":16.413951,"eighty":21.419799,"marketCap":2825084085},{"date":"2021-09-03","current":14.136531,"twenty":14.360411,"median":16.411653,"eighty":21.419799,"marketCap":2673217921},{"date":"2021-09-10","current":13.583577,"twenty":14.330779,"median":16.411653,"eighty":21.419799,"marketCap":2568654333},{"date":"2021-09-17","current":12.750854,"twenty":14.30471,"median":16.411653,"eighty":21.419799,"marketCap":2411186548},{"date":"2021-09-24","current":12.801929,"twenty":14.269862,"median":16.400074,"eighty":21.419799,"marketCap":2420844716},{"date":"2021-10-01","current":13.381142,"twenty":14.230087,"median":16.396214,"eighty":21.419799,"marketCap":2530373937},{"date":"2021-10-08","current":13.87479,"twenty":14.21925,"median":16.385412,"eighty":21.419799,"marketCap":2623722705},{"date":"2021-10-15","current":13.397597,"twenty":14.197726,"median":16.354791,"eighty":21.419799,"marketCap":2533485563},{"date":"2021-10-22","current":13.907699,"twenty":14.182333,"median":16.286198,"eighty":21.419799,"marketCap":2629945957},{"date":"2021-10-29","current":13.767991,"twenty":14.161919,"median":16.262933,"eighty":21.419799,"marketCap":2587005523},{"date":"2021-11-05","current":14.314156,"twenty":14.143138,"median":16.241825,"eighty":21.419799,"marketCap":2689630000},{"date":"2021-11-12","current":14.310845,"twenty":14.143138,"median":16.216592,"eighty":21.419799,"marketCap":2689007689},{"date":"2021-11-19","current":14.380395,"twenty":14.143138,"median":16.201542,"eighty":21.419799,"marketCap":2702076229},{"date":"2021-11-26","current":13.443119,"twenty":14.138676,"median":16.189331,"eighty":21.419799,"marketCap":2525962094},{"date":"2021-12-03","current":13.270899,"twenty":14.12055,"median":16.178995,"eighty":21.419799,"marketCap":2493601900},{"date":"2021-12-10","current":13.231156,"twenty":14.097579,"median":16.158164,"eighty":21.419165,"marketCap":2486134162},{"date":"2021-12-17","current":12.834095,"twenty":14.08029,"median":16.146207,"eighty":21.324086,"marketCap":2411526450},{"date":"2021-12-23","current":12.946646,"twenty":14.03659,"median":16.133208,"eighty":21.261189,"marketCap":2432674735},{"date":"2021-12-31","current":13.463055,"twenty":13.984338,"median":16.125598,"eighty":21.225793,"marketCap":2529708040},{"date":"2022-01-07","current":14.737527,"twenty":13.971811,"median":16.092298,"eighty":21.15896,"marketCap":2769181263},{"date":"2022-01-14","current":14.658079,"twenty":13.971811,"median":16.062546,"eighty":21.106718,"marketCap":2754253062},{"date":"2022-01-21","current":12.797682,"twenty":13.966313,"median":16.033398,"eighty":21.058854,"marketCap":2404684358},{"date":"2022-01-28","current":12.077518,"twenty":13.937601,"median":15.980965,"eighty":21.036057,"marketCap":2320091220},{"date":"2022-02-04","current":11.88648,"twenty":13.913669,"median":15.955917,"eighty":21.004593,"marketCap":2283392726},{"date":"2022-02-11","current":12.190846,"twenty":13.887963,"median":15.938502,"eighty":20.947399,"marketCap":2341861513},{"date":"2022-02-18","current":12.49845,"twenty":13.831116,"median":15.909427,"eighty":20.840149,"marketCap":2400952308},{"date":"2022-02-25","current":12.885295,"twenty":13.810209,"median":15.905797,"eighty":20.815092,"marketCap":2475265153},{"date":"2022-03-04","current":12.474028,"twenty":13.773949,"median":15.88834,"eighty":20.791465,"marketCap":2396260711},{"date":"2022-03-11","current":12.639182,"twenty":13.75297,"median":15.87107,"eighty":20.687589,"marketCap":2427986904},{"date":"2022-03-18","current":12.33478,"twenty":13.708671,"median":15.829814,"eighty":20.58355,"marketCap":2369511175},{"date":"2022-03-25","current":16.782964,"twenty":13.65922,"median":15.810785,"eighty":20.559491,"marketCap":3224007305},{"date":"2022-04-01","current":11.781026,"twenty":13.579291,"median":15.800472,"eighty":20.503527,"marketCap":2263135116},{"date":"2022-04-08","current":11.152791,"twenty":13.523854,"median":15.776148,"eighty":20.470143,"marketCap":2142451165},{"date":"2022-04-14","current":11.123646,"twenty":13.489499,"median":15.766998,"eighty":20.470143,"marketCap":2136852425},{"date":"2022-04-22","current":11.220796,"twenty":13.440129,"median":15.734268,"eighty":20.460692,"marketCap":2155514892},{"date":"2022-04-29","current":18.853787,"twenty":13.391717,"median":15.722549,"eighty":20.420056,"marketCap":2023011379},{"date":"2022-05-06","current":20.135056,"twenty":13.391717,"median":15.722549,"eighty":20.452288,"marketCap":2160491550},{"date":"2022-05-13","current":34.919586,"twenty":13.391717,"median":15.722549,"eighty":20.557751,"marketCap":3746871607},{"date":"2022-05-20","current":34.297116,"twenty":13.391717,"median":15.722549,"eighty":20.659156,"marketCap":3680080500},{"date":"2022-05-27","current":38.848295,"twenty":13.391717,"median":15.722549,"eighty":20.791465,"marketCap":4168422037},{"date":"2022-06-03","current":39.185041,"twenty":13.391717,"median":15.722549,"eighty":20.791465,"marketCap":4204554931},{"date":"2022-06-10","current":37.011496,"twenty":13.391717,"median":15.722549,"eighty":20.791465,"marketCap":3971333524},{"date":"2022-06-17","current":37.062518,"twenty":13.391717,"median":15.722549,"eighty":20.791465,"marketCap":3976808205},{"date":"2022-06-24","current":38.705433,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4153092930},{"date":"2022-07-01","current":39.511583,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4239592888},{"date":"2022-07-08","current":39.511583,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4239592888},{"date":"2022-07-15","current":38.756455,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4158567611},{"date":"2022-07-22","current":40.338143,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4328282719},{"date":"2022-07-29","current":34.091321,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4394371240},{"date":"2022-08-05","current":33.620541,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4333687724},{"date":"2022-08-12","current":34.308366,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4422348331},{"date":"2022-08-19","current":34.117764,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4397779729},{"date":"2022-08-26","current":33.322207,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4295232521},{"date":"2022-09-02","current":32.64267,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4207640115},{"date":"2022-09-09","current":33.620541,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4333687724},{"date":"2022-09-16","current":34.664709,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4468280934},{"date":"2022-09-23","current":34.382949,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4431962131},{"date":"2022-09-30","current":33.438226,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4310187322},{"date":"2022-10-07","current":34.399523,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4434098532},{"date":"2022-10-14","current":35.667441,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4597533144},{"date":"2022-10-21","current":34.954755,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4505667937},{"date":"2022-10-28","current":28.086406,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4704473040},{"date":"2022-11-04","current":28.666343,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4801612470},{"date":"2022-11-11","current":27.443246,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4596743761},{"date":"2022-11-18","current":27.536782,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4612410917},{"date":"2022-11-25","current":27.792445,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4655234479},{"date":"2022-12-02","current":26.869563,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4500651866},{"date":"2022-12-09","current":25.235814,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4226998864},{"date":"2022-12-16","current":23.502294,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":3936634227},{"date":"2022-12-23","current":23.901378,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4003480762},{"date":"2022-12-30","current":24.10092,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4036904030},{"date":"2023-01-06","current":24.506239,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4104795042},{"date":"2023-01-13","current":24.568596,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":4115239813},{"date":"2023-01-20","current":23.639479,"twenty":13.389896,"median":15.722243,"eighty":20.780261,"marketCap":3959612724},{"date":"2023-01-27","current":17.366627,"twenty":13.389896,"median":15.722243,"eighty":20.753663,"marketCap":3511532043},{"date":"2023-02-03","current":19.417356,"twenty":13.389896,"median":15.722243,"eighty":20.611903,"marketCap":3926189456},{"date":"2023-02-10","current":18.952456,"twenty":13.389896,"median":15.722243,"eighty":20.479593,"marketCap":3832186516},{"date":"2023-02-17","current":19.17974,"twenty":13.389896,"median":15.722243,"eighty":20.389812,"marketCap":3878143509},{"date":"2023-02-24","current":18.558708,"twenty":13.389896,"median":15.722243,"eighty":20.366185,"marketCap":3752570771},{"date":"2023-03-03","current":18.145489,"twenty":13.389896,"median":15.722243,"eighty":20.318932,"marketCap":3669017845},{"date":"2023-03-10","current":16.394472,"twenty":13.389896,"median":15.722243,"eighty":20.177172,"marketCap":3314962323},{"date":"2023-03-17","current":15.36659,"twenty":13.389896,"median":15.718848,"eighty":20.111709,"marketCap":3107124420},{"date":"2023-03-24","current":15.531877,"twenty":13.389896,"median":15.674614,"eighty":20.044863,"marketCap":3140545590},{"date":"2023-03-31","current":15.423407,"twenty":13.391717,"median":15.6678,"eighty":19.973935,"marketCap":3118612948},{"date":"2023-04-06","current":14.968866,"twenty":13.388075,"median":15.647111,"eighty":19.913655,"marketCap":3026704729},{"date":"2023-04-14","current":15.255247,"twenty":13.383775,"median":15.618205,"eighty":19.842618,"marketCap":3084610880},{"date":"2023-04-21","current":14.919683,"twenty":13.383117,"median":15.605714,"eighty":19.789773,"marketCap":3016759879},{"date":"2023-04-28","current":13.613565,"twenty":13.382458,"median":15.577273,"eighty":19.774637,"marketCap":2752662907},{"date":"2023-05-05","current":8.257199,"twenty":13.338359,"median":15.56339,"eighty":19.775519,"marketCap":2410276318},{"date":"2023-05-12","current":7.803035,"twenty":13.270899,"median":15.54321,"eighty":19.768982,"marketCap":2277705902},{"date":"2023-05-19","current":8.420874,"twenty":13.22122,"median":15.519097,"eighty":19.665026,"marketCap":2458052986},{"date":"2023-05-26","current":8.349359,"twenty":13.146917,"median":15.495211,"eighty":19.38781,"marketCap":2437177802},{"date":"2023-06-02","current":8.134814,"twenty":13.118645,"median":15.478906,"eighty":19.264301,"marketCap":2374552248},{"date":"2023-06-09","current":9.00372,"twenty":12.962369,"median":15.456117,"eighty":19.154946,"marketCap":2628185741},{"date":"2023-06-16","current":9.207537,"twenty":12.890966,"median":15.419461,"eighty":19.120677,"marketCap":2687680017},{"date":"2023-06-23","current":8.503116,"twenty":12.831447,"median":15.392408,"eighty":18.996547,"marketCap":2482059448},{"date":"2023-06-30","current":8.731963,"twenty":12.805928,"median":15.376437,"eighty":18.90481,"marketCap":2548860039},{"date":"2023-07-07","current":8.310026,"twenty":12.755737,"median":15.366168,"eighty":18.882965,"marketCap":2425696450},{"date":"2023-07-13","current":8.710509,"twenty":12.722506,"median":15.349006,"eighty":18.8358,"marketCap":2542597484},{"date":"2023-07-20","current":9.529354,"twenty":12.670289,"median":15.336768,"eighty":18.716321,"marketCap":2781618347},{"date":"2023-07-28","current":10.18148,"twenty":12.629345,"median":15.311145,"eighty":18.706485,"marketCap":3001500180},{"date":"2023-08-04","current":10.388102,"twenty":12.606799,"median":15.282736,"eighty":18.706485,"marketCap":3062412360},{"date":"2023-08-11","current":10.234654,"twenty":12.556384,"median":15.259122,"eighty":18.706485,"marketCap":3017176017},{"date":"2023-08-18","current":9.507933,"twenty":12.527002,"median":15.244965,"eighty":18.706485,"marketCap":2802938667},{"date":"2023-08-25","current":9.08045,"twenty":12.476083,"median":15.219783,"eighty":18.668144,"marketCap":2676916696},{"date":"2023-09-01","current":9.230069,"twenty":12.443517,"median":15.186202,"eighty":18.560774,"marketCap":2721024386},{"date":"2023-09-08","current":8.816836,"twenty":12.41952,"median":15.157235,"eighty":18.502606,"marketCap":2599203147},{"date":"2023-09-15","current":9.119636,"twenty":12.399465,"median":15.093818,"eighty":18.347234,"marketCap":2688468710},{"date":"2023-09-22","current":8.727777,"twenty":12.33737,"median":15.065046,"eighty":18.138529,"marketCap":2572948570},{"date":"2023-09-29","current":8.756276,"twenty":12.308572,"median":15.038543,"eighty":18.112915,"marketCap":2581350035},{"date":"2023-10-06","current":8.774087,"twenty":12.267881,"median":15.010188,"eighty":18.030545,"marketCap":2586600950},{"date":"2023-10-13","current":8.603094,"twenty":12.206975,"median":14.969253,"eighty":17.91884,"marketCap":2536192162},{"date":"2023-10-20","current":8.346604,"twenty":12.175165,"median":14.93963,"eighty":17.871861,"marketCap":2460578979},{"date":"2023-10-27","current":8.798731,"twenty":12.128932,"median":14.918194,"eighty":17.838901,"marketCap":2479482275},{"date":"2023-11-03","current":9.196847,"twenty":12.077518,"median":14.909359,"eighty":17.838901,"marketCap":2591671480},{"date":"2023-11-10","current":8.688965,"twenty":12.012826,"median":14.876373,"eighty":17.838901,"marketCap":2448550235},{"date":"2023-11-17","current":9.523582,"twenty":11.961094,"median":14.824827,"eighty":17.838901,"marketCap":2683745454},{"date":"2023-11-24","current":9.475145,"twenty":11.941624,"median":14.800914,"eighty":17.838901,"marketCap":2670095732},{"date":"2023-12-01","current":9.646539,"twenty":11.899762,"median":14.770112,"eighty":17.838901,"marketCap":2718394750},{"date":"2023-12-08","current":10.481157,"twenty":11.859002,"median":14.745188,"eighty":17.826733,"marketCap":2953589970},{"date":"2023-12-15","current":11.975271,"twenty":11.787285,"median":14.72411,"eighty":17.838901,"marketCap":3374631413},{"date":"2023-12-22","current":11.539333,"twenty":11.759706,"median":14.72411,"eighty":17.838901,"marketCap":3251783910},{"date":"2023-12-29","current":11.714453,"twenty":11.744827,"median":14.725321,"eighty":17.85107,"marketCap":3301132907},{"date":"2024-01-05","current":11.278515,"twenty":11.719967,"median":14.72411,"eighty":17.855074,"marketCap":3178285403},{"date":"2024-01-12","current":11.0326,"twenty":11.652602,"median":14.681165,"eighty":17.855074,"marketCap":3108986812},{"date":"2024-01-19","current":10.645099,"twenty":11.605303,"median":14.648596,"eighty":17.859078,"marketCap":2999789031},{"date":"2024-01-26","current":10.611566,"twenty":11.544596,"median":14.637451,"eighty":17.855074,"marketCap":2990339223},{"date":"2024-02-02","current":10.668688,"twenty":11.52455,"median":14.622084,"eighty":17.855074,"marketCap":2747187060},{"date":"2024-02-09","current":10.260993,"twenty":11.457372,"median":14.599194,"eighty":17.855074,"marketCap":2642205640},{"date":"2024-02-16","current":10.809968,"twenty":11.424314,"median":14.561831,"eighty":17.855074,"marketCap":2783566760},{"date":"2024-02-23","current":10.761529,"twenty":11.386337,"median":14.532849,"eighty":17.855074,"marketCap":2771093720},{"date":"2024-03-01","current":10.624285,"twenty":11.297144,"median":14.501875,"eighty":17.85107,"marketCap":2735753440},{"date":"2024-03-08","current":10.760892,"twenty":11.271063,"median":14.45946,"eighty":17.85107,"marketCap":2770929601},{"date":"2024-03-15","current":10.098931,"twenty":11.220796,"median":14.43276,"eighty":17.85107,"marketCap":2600474816},{"date":"2024-03-22","current":10.716492,"twenty":11.185174,"median":14.414545,"eighty":17.85107,"marketCap":2759496658},{"date":"2024-03-28","current":11.152417,"twenty":11.156029,"median":14.401588,"eighty":17.85107,"marketCap":2871747369},{"date":"2024-04-05","current":10.40973,"twenty":11.111394,"median":14.384327,"eighty":17.855074,"marketCap":2680505416},{"date":"2024-04-12","current":10.127186,"twenty":11.059446,"median":14.372356,"eighty":17.855074,"marketCap":2607750325},{"date":"2024-04-19","current":9.969768,"twenty":10.955022,"median":14.343798,"eighty":17.855074,"marketCap":2567215346},{"date":"2024-04-26","current":10.855992,"twenty":10.864932,"median":14.314238,"eighty":17.85107,"marketCap":2818215400},{"date":"2024-05-03","current":11.234642,"twenty":10.859527,"median":14.286158,"eighty":17.85107,"marketCap":2916513080},{"date":"2024-05-10","current":11.169766,"twenty":10.859527,"median":14.239936,"eighty":17.85107,"marketCap":2899671166},{"date":"2024-05-17","current":11.137541,"twenty":10.859527,"median":14.225048,"eighty":17.85107,"marketCap":2891305725},{"date":"2024-05-24","current":10.920027,"twenty":10.859527,"median":14.218258,"eighty":17.85107,"marketCap":2834838995},{"date":"2024-05-31","current":10.678344,"twenty":10.846302,"median":14.209997,"eighty":17.85107,"marketCap":2772098183},{"date":"2024-06-07","current":10.553475,"twenty":10.78686,"median":14.209997,"eighty":17.85107,"marketCap":2739682097},{"date":"2024-06-14","current":10.468886,"twenty":10.759771,"median":14.20743,"eighty":17.855074,"marketCap":2717722813},{"date":"2024-06-21","current":10.456802,"twenty":10.716252,"median":14.195355,"eighty":17.859078,"marketCap":2714585773},{"date":"2024-06-28","current":10.762933,"twenty":10.708419,"median":14.182624,"eighty":17.871091,"marketCap":2794057467},{"date":"2024-07-05","current":11.16171,"twenty":10.708419,"median":14.155597,"eighty":17.871091,"marketCap":2897579806},{"date":"2024-07-12","current":11.782028,"twenty":10.708419,"median":14.134522,"eighty":17.871091,"marketCap":3058614555},{"date":"2024-07-15","current":11.749804,"twenty":10.708419,"median":14.120802,"eighty":17.871091,"marketCap":3050249114},{"date":"2024-08-02","current":12.298129,"twenty":10.703505,"median":14.079319,"eighty":17.884954,"marketCap":3106507310},{"date":"2024-08-09","current":11.770979,"twenty":10.703505,"median":14.014558,"eighty":17.884954,"marketCap":2973349357},{"date":"2024-08-16","current":11.957229,"twenty":10.703505,"median":13.950151,"eighty":17.884954,"marketCap":3020396024},{"date":"2024-08-23","current":12.068979,"twenty":10.703505,"median":13.922959,"eighty":17.884954,"marketCap":3048624024},{"date":"2024-08-30","current":12.702228,"twenty":10.703505,"median":13.907699,"eighty":17.884954,"marketCap":3208582692},{"date":"2024-09-06","current":12.375256,"twenty":10.703505,"median":13.87479,"eighty":17.884954,"marketCap":3125989655},{"date":"2024-09-13","current":12.060701,"twenty":10.703505,"median":13.820557,"eighty":17.884954,"marketCap":3046533061},{"date":"2024-09-20","current":13.24856,"twenty":10.703505,"median":13.795325,"eighty":17.884954,"marketCap":3346586249},{"date":"2024-09-27","current":12.5077,"twenty":10.703505,"median":13.756248,"eighty":17.884954,"marketCap":3159445062},{"date":"2024-10-04","current":12.222117,"twenty":10.703505,"median":13.711653,"eighty":17.884954,"marketCap":3087306839},{"date":"2024-10-11","current":12.284201,"twenty":10.703505,"median":13.663743,"eighty":17.884954,"marketCap":3102989062},{"date":"2024-10-18","current":13.592087,"twenty":10.703505,"median":13.602073,"eighty":17.884954,"marketCap":3433361213},{"date":"2024-10-25","current":14.214126,"twenty":10.703505,"median":13.557699,"eighty":17.884954,"marketCap":3346005300},{"date":"2024-10-31","current":14.036505,"twenty":10.703505,"median":13.557699,"eighty":17.884954,"marketCap":3304193300},{"date":"2024-11-08","current":14.480539,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3408718832},{"date":"2024-11-15","current":14.778054,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3478753840},{"date":"2024-11-22","current":15.022282,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3536245265},{"date":"2024-11-29","current":15.528502,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3655409309},{"date":"2024-12-06","current":15.222106,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3583283703},{"date":"2024-12-13","current":15.128855,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3561332432},{"date":"2024-12-20","current":13.996522,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3294781281},{"date":"2024-12-27","current":14.644838,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3447394881},{"date":"2025-01-03","current":14.191905,"twenty":10.703213,"median":13.534197,"eighty":17.885724,"marketCap":3340774421},{"date":"2025-01-10","current":14.138619,"twenty":10.70292,"median":13.525917,"eighty":17.886494,"marketCap":3328230837},{"date":"2025-01-17","current":14.445015,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3400356443},{"date":"2025-01-24","current":14.484979,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3409764131},{"date":"2025-01-31","current":15.502792,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3503631000},{"date":"2025-02-07","current":15.377844,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3475392780},{"date":"2025-02-14","current":15.109438,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3414732900},{"date":"2025-02-21","current":14.887308,"twenty":10.70292,"median":13.515601,"eighty":17.886494,"marketCap":3364531620},{"date":"2025-02-28","current":14.137621,"twenty":10.70292,"median":13.525917,"eighty":17.886494,"marketCap":3195102300},{"date":"2025-03-07","current":13.367057,"twenty":10.702216,"median":13.554661,"eighty":17.888034,"marketCap":3020954916},{"date":"2025-03-14","current":12.99241,"twenty":10.716372,"median":13.554661,"eighty":17.888034,"marketCap":2936284554},{"date":"2025-03-21","current":13.242175,"twenty":10.751564,"median":13.554661,"eighty":17.888034,"marketCap":2992731462},{"date":"2025-03-28","current":13.459563,"twenty":10.77555,"median":13.559528,"eighty":17.888034,"marketCap":3041861179},{"date":"2025-04-04","current":11.859216,"twenty":10.829371,"median":13.559528,"eighty":17.888034,"marketCap":2680182839},{"date":"2025-04-11","current":11.341185,"twenty":10.855992,"median":13.55691,"eighty":17.886494,"marketCap":2563107770},{"date":"2025-04-17","current":12.025726,"twenty":10.898127,"median":13.55691,"eighty":17.886494,"marketCap":2717814112},{"date":"2025-04-25","current":12.92998,"twenty":10.948247,"median":13.559528,"eighty":17.888034,"marketCap":2922175440},{"date":"2025-05-02","current":12.836784,"twenty":10.948247,"median":13.559528,"eighty":17.888034,"marketCap":2795851500},{"date":"2025-05-09","current":13.1133,"twenty":10.948247,"median":13.559528,"eighty":17.888034,"marketCap":2856076740},{"date":"2025-05-16","current":13.334825,"twenty":10.977351,"median":13.584411,"eighty":17.888034,"marketCap":2904324823},{"date":"2025-05-23","current":12.747303,"twenty":11.007755,"median":13.584411,"eighty":17.888034,"marketCap":2776362516},{"date":"2025-05-30","current":13.103668,"twenty":11.007755,"median":13.584411,"eighty":17.888034,"marketCap":2853978997},{"date":"2025-06-06","current":13.098853,"twenty":11.007755,"median":13.584411,"eighty":17.888034,"marketCap":2852930126},{"date":"2025-06-13","current":13.219247,"twenty":11.007755,"median":13.584411,"eighty":17.888034,"marketCap":2879151910},{"date":"2025-06-20","current":12.622093,"twenty":11.001539,"median":13.585244,"eighty":17.889574,"marketCap":2749091860},{"date":"2025-06-27","current":13.970504,"twenty":11.001539,"median":13.592087,"eighty":17.889574,"marketCap":3042775844},{"date":"2025-07-03","current":14.986629,"twenty":11.001539,"median":13.633402,"eighty":17.889574,"marketCap":3264087703},{"date":"2025-07-11","current":15.111838,"twenty":11.03459,"median":13.680678,"eighty":17.889574,"marketCap":3291358359},{"date":"2025-07-18","current":14.818077,"twenty":11.043721,"median":13.72788,"eighty":17.889574,"marketCap":3227377205},{"date":"2025-07-25","current":14.220924,"twenty":11.043721,"median":13.756248,"eighty":17.889574,"marketCap":3097317155},{"date":"2025-08-01","current":13.156089,"twenty":11.043721,"median":13.767991,"eighty":17.889574,"marketCap":3019322460},{"date":"2025-08-08","current":13.160659,"twenty":11.043721,"median":13.767991,"eighty":17.889574,"marketCap":3020371200},{"date":"2025-08-15","current":13.985469,"twenty":11.043721,"median":13.774477,"eighty":17.889574,"marketCap":3209665178},{"date":"2025-08-22","current":13.720472,"twenty":11.043721,"median":13.805679,"eighty":17.889574,"marketCap":3148848262},{"date":"2025-08-29","current":14.643394,"twenty":11.043721,"median":13.820557,"eighty":17.889574,"marketCap":3360658901},{"date":"2025-09-05","current":14.997485,"twenty":11.041119,"median":13.854012,"eighty":17.891115,"marketCap":3441922884},{"date":"2025-09-12","current":14.839858,"twenty":11.043721,"median":13.899722,"eighty":17.889574,"marketCap":3405747304},{"date":"2025-09-19","current":15.461231,"twenty":11.043721,"median":13.922959,"eighty":17.889574,"marketCap":3548352487},{"date":"2025-09-26","current":14.935805,"twenty":11.043721,"median":13.952135,"eighty":17.889574,"marketCap":3427767222},{"date":"2025-10-03","current":14.478913,"twenty":11.043721,"median":13.976331,"eighty":17.889574,"marketCap":3322910470},{"date":"2025-10-10","current":14.323569,"twenty":11.043721,"median":14.036505,"eighty":17.889574,"marketCap":3287259175},{"date":"2025-10-17","current":13.391509,"twenty":11.043721,"median":14.049212,"eighty":17.889574,"marketCap":3073351401},{"date":"2025-10-24","current":14.273311,"twenty":11.043721,"median":14.079319,"eighty":17.889574,"marketCap":3275724932},{"date":"2025-10-31","current":13.336924,"twenty":11.043721,"median":14.080892,"eighty":17.889574,"marketCap":3272881160},{"date":"2025-11-07","current":13.46826,"twenty":11.043721,"median":14.079319,"eighty":17.889574,"marketCap":3305110930},{"date":"2025-11-14","current":13.173688,"twenty":11.043721,"median":14.036505,"eighty":17.889574,"marketCap":3232823091},{"date":"2025-11-21","current":12.829881,"twenty":11.043721,"median":13.976331,"eighty":17.889574,"marketCap":3148452788},{"date":"2025-11-28","current":13.769062,"twenty":11.043721,"median":13.952135,"eighty":17.889574,"marketCap":3378927763},{"date":"2025-12-05","current":14.117062,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3464326973},{"date":"2025-12-12","current":14.871761,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3649530078},{"date":"2025-12-19","current":14.922074,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3661876952},{"date":"2025-12-26","current":15.035279,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3689657418},{"date":"2026-01-02","current":14.50699,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3560015244},{"date":"2026-01-09","current":15.731279,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3860455837},{"date":"2026-01-16","current":15.62646,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3834733183},{"date":"2026-01-23","current":16.024773,"twenty":11.043721,"median":13.940215,"eighty":17.889574,"marketCap":3932479267},{"date":"2026-01-30","current":12.095236,"twenty":11.043721,"median":13.917572,"eighty":17.889574,"marketCap":3653970840},{"date":"2026-02-06","current":12.717736,"twenty":11.043721,"median":13.87479,"eighty":17.889574,"marketCap":3842028000},{"date":"2026-02-13","current":12.496849,"twenty":11.043721,"median":13.831525,"eighty":17.889574,"marketCap":3775298040},{"date":"2026-02-20","current":12.429913,"twenty":11.043721,"median":13.805679,"eighty":17.889574,"marketCap":3755076840},{"date":"2026-02-27","current":12.312776,"twenty":11.043721,"median":13.769062,"eighty":17.859078,"marketCap":3719689740},{"date":"2026-03-06","current":11.715129,"twenty":11.043721,"median":13.739859,"eighty":17.731696,"marketCap":3539140570},{"date":"2026-03-13","current":11.122679,"twenty":11.043721,"median":13.725041,"eighty":17.48486,"marketCap":3360161175},{"date":"2026-03-20","current":10.804696,"twenty":11.025148,"median":13.693785,"eighty":16.402736,"marketCap":3264098788},{"date":"2026-03-27","current":11.213052,"twenty":11.001539,"median":13.641962,"eighty":16.234209,"marketCap":3387463117}],"updateTime":1774729029733},"$inf$@#url:\"https://stock-news.skytigris.cn/v3/notice/important/events/list\",params:#symbol:\"FIBK\",pageSize:20,pageCount:5,market:\"us\",,,undefined,":[{"items":[{"cdn_pdf":false,"hasAttachments":true,"id":"17679359","market":"us","labels":[],"media":"sec.gov","original_id":"AN195917324001984-FIBK","pdf_url":"","pub_time":1709750463000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/0001959173-24-001984-index.html","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195917324001984/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILE7eiAqu52LQAtZUK7","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2024-03-07 02:41","pubTimestamp":1709750463,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17651845","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041324000016-FIBK","pdf_url":"","pub_time":1709182800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","symbol":"FIBK","title":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","titleType":"Annual Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/0000860413-24-000016-index.htm","us_notice_code":"Form 10-K","us_title_en":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"10-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20231231.htm","primary":true,"translateUrl":"","linkName":"fibk-20231231.htm","type":"10-K","id":"NTFILE6K8wP439egrDn3je","market":"us","size":5703589},{"description":"EX-4.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20231231xex41_descxse.htm","primary":false,"translateUrl":"","linkName":"fibk-20231231xex41_descxse.htm","type":"EX-4.1","id":"NTFILEeAi2gwuxhxCjVfRx","market":"us","size":11958},{"description":"EX-10.12","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20240226xex1012rsuagmt.htm","primary":false,"translateUrl":"","linkName":"fibk-20240226xex1012rsuagmt.htm","type":"EX-10.12","id":"NTFILE7NDQgopnUWNc8JBC","market":"us","size":72912},{"description":"EX-10.13","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20240226xex1013rsuagm.htm","primary":false,"translateUrl":"","linkName":"fibk-20240226xex1013rsuagm.htm","type":"EX-10.13","id":"NTFILEGLs1fXKC1F62iCah","market":"us","size":97424},{"description":"EX-10.14","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20240226xex1014_prsur.htm","primary":false,"translateUrl":"","linkName":"fibk-20240226xex1014_prsur.htm","type":"EX-10.14","id":"NTFILE6xeUUvjSdEz8Lb8a","market":"us","size":94595},{"description":"EX-10.15","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20240226xex1015_prsut.htm","primary":false,"translateUrl":"","linkName":"fibk-20240226xex1015_prsut.htm","type":"EX-10.15","id":"NTFILET9FRzStSftBfkFet","market":"us","size":94631},{"description":"EX-10.16","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20240226xex1016_prsur.htm","primary":false,"translateUrl":"","linkName":"fibk-20240226xex1016_prsur.htm","type":"EX-10.16","id":"NTFILE6LeXBnrRJ4kYRajY","market":"us","size":121226},{"description":"EX-10.17","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20240226xex1017_prsut.htm","primary":false,"translateUrl":"","linkName":"fibk-20240226xex1017_prsut.htm","type":"EX-10.17","id":"NTFILE7MMqqkCPXicTKHVD","market":"us","size":122320},{"description":"EX-10.18","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20231231xex1018_direc.htm","primary":false,"translateUrl":"","linkName":"fibk-20231231xex1018_direc.htm","type":"EX-10.18","id":"NTFILEDBL2xHuJkeh2LpCt","market":"us","size":11510},{"description":"EX-10.23","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20240123xex1023_robbi.htm","primary":false,"translateUrl":"","linkName":"fibk-20240123xex1023_robbi.htm","type":"EX-10.23","id":"NTFILE56vAmuEGSp4k6xHX","market":"us","size":111741},{"description":"EX-14.1","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20231231xex141_codeof.htm","primary":false,"translateUrl":"","linkName":"fibk-20231231xex141_codeof.htm","type":"EX-14.1","id":"NTFILEFjypvjP6QhqGXsYB","market":"us","size":25316},{"description":"EX-23.1","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20231231xex231_consen.htm","primary":false,"translateUrl":"","linkName":"fibk-20231231xex231_consen.htm","type":"EX-23.1","id":"NTFILE5cwLzAKWmFGDcSB5","market":"us","size":3370},{"description":"EX-31.1","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20231231xex311_certxc.htm","primary":false,"translateUrl":"","linkName":"fibk-20231231xex311_certxc.htm","type":"EX-31.1","id":"NTFILEEoa4EGqYjKooPC7s","market":"us","size":9996},{"description":"EX-31.2","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20231231xex312_certxc.htm","primary":false,"translateUrl":"","linkName":"fibk-20231231xex312_certxc.htm","type":"EX-31.2","id":"NTFILE5XM3VsugGsTpqXor","market":"us","size":9960},{"description":"EX-32","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20231231xex32_section.htm","primary":false,"translateUrl":"","linkName":"fibk-20231231xex32_section.htm","type":"EX-32","id":"NTFILE6UMqmmRV1v9XchsC","market":"us","size":6183},{"description":"EX-97","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20231231xex97_clawback.htm","primary":false,"translateUrl":"","linkName":"fibk-20231231xex97_clawback.htm","type":"EX-97","id":"NTFILECsXYX5FBbhinRsgb","market":"us","size":37045},{"description":"GRAPHIC","seq":22,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/fibk-20231231_g1.jpg","primary":false,"translateUrl":"","linkName":"fibk-20231231_g1.jpg","type":"GRAPHIC","id":"NTFILEBtPapTGZNh9qcMeu","market":"us","size":141355},{"description":"GRAPHIC","seq":23,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000016/image_0.jpg","primary":false,"translateUrl":"","linkName":"image_0.jpg","type":"GRAPHIC","id":"NTFILE6deeXmKD6dL1dgBu","market":"us","size":54496}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"Annual Report","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"Annual Report","pubTime":"2024-02-29 13:00","pubTimestamp":1709182800,"title_zh":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17593265","market":"us","labels":[],"media":"sec.gov","original_id":"AN110465924020940-FIBK","pdf_url":"","pub_time":1707861881000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]","symbol":"FIBK","title":"Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/0001104659-24-020940-index.html","us_notice_code":"Form SC 13G/A","us_title_en":"Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"SCHEDULE 13G/A","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/102909/000110465924020940/tv0940-firstinterstatebancsy.htm","primary":true,"translateUrl":"","linkName":"tv0940-firstinterstatebancsy.htm","type":"SC 13G/A","id":"NTFILEBtSfa2555Bb7MRrJ","market":"us","size":11492}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2024-02-14 06:04","pubTimestamp":1707861881,"title_zh":"Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17576088","market":"us","labels":[],"media":"sec.gov","original_id":"AN195917324000774-FIBK","pdf_url":"","pub_time":1707340186000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/0001959173-24-000774-index.html","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195917324000774/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILECPxJEVSoQ8R4XMP3","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2024-02-08 05:09","pubTimestamp":1707340186,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17533705","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041324000003-FIBK","pdf_url":"","pub_time":1706590800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/0000860413-24-000003-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"EX-99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/fibk-20231231x8kpr.htm","primary":true,"translateUrl":"","linkName":"fibk-20231231x8kpr.htm","type":"EX-99.1","id":"NTFILE9C4jE6oxfrHM8iBc","market":"us","size":981431},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/fibk-20240130.htm","primary":false,"translateUrl":"","linkName":"fibk-20240130.htm","type":"8-K","id":"NTFILE95x27YZzmdJugPQL","market":"us","size":32721},{"description":"EX-99.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip.htm","primary":false,"translateUrl":"","linkName":"dec2023ip.htm","type":"EX-99.2","id":"NTFILEAYqcPRMrnMbvckjA","market":"us","size":33017},{"description":"GRAPHIC","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip001.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip001.jpg","type":"GRAPHIC","id":"NTFILE2zgCdaLYW5Fu8bEk","market":"us","size":292663},{"description":"GRAPHIC","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip002.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip002.jpg","type":"GRAPHIC","id":"NTFILE7t1eWHWUpCDCMncp","market":"us","size":284746},{"description":"GRAPHIC","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip003.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip003.jpg","type":"GRAPHIC","id":"NTFILEC4rpfSXuxemsXJjK","market":"us","size":99262},{"description":"GRAPHIC","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip004.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip004.jpg","type":"GRAPHIC","id":"NTFILE2ySpapyhgwufF78b","market":"us","size":81378},{"description":"GRAPHIC","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip005.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip005.jpg","type":"GRAPHIC","id":"NTFILEEfkT6hNNjhmjPMvh","market":"us","size":163966},{"description":"GRAPHIC","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip006.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip006.jpg","type":"GRAPHIC","id":"NTFILE6jAmwFoLoBkR5s9h","market":"us","size":84216},{"description":"GRAPHIC","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip007.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip007.jpg","type":"GRAPHIC","id":"NTFILE2mj9NbZRgp2ASsvT","market":"us","size":97678},{"description":"GRAPHIC","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip008.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip008.jpg","type":"GRAPHIC","id":"NTFILEem3PhJ9HDrgGpvb5","market":"us","size":108733},{"description":"GRAPHIC","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip009.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip009.jpg","type":"GRAPHIC","id":"NTFILE9wCmu1WoEFbynbcW","market":"us","size":79590},{"description":"GRAPHIC","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip010.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip010.jpg","type":"GRAPHIC","id":"NTFILE7Vwpe5wxkbfvWhda","market":"us","size":107097},{"description":"GRAPHIC","seq":17,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip011.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip011.jpg","type":"GRAPHIC","id":"NTFILEFJzjFaVdUzTtsBfc","market":"us","size":100891},{"description":"GRAPHIC","seq":18,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip012.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip012.jpg","type":"GRAPHIC","id":"NTFILE2AFLQ7SEjk7sU97m","market":"us","size":61633},{"description":"GRAPHIC","seq":19,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip013.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip013.jpg","type":"GRAPHIC","id":"NTFILE4XCFpaRxnidy2QE4","market":"us","size":73324},{"description":"GRAPHIC","seq":20,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip014.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip014.jpg","type":"GRAPHIC","id":"NTFILEDqRmPWENmud8Rnak","market":"us","size":98096},{"description":"GRAPHIC","seq":21,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip015.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip015.jpg","type":"GRAPHIC","id":"NTFILEQR93seFEgJ95uYZ1","market":"us","size":97055},{"description":"GRAPHIC","seq":22,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip016.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip016.jpg","type":"GRAPHIC","id":"NTFILE9xcpxJvE4WdLxYtk","market":"us","size":268625},{"description":"GRAPHIC","seq":23,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip017.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip017.jpg","type":"GRAPHIC","id":"NTFILEFUhnTqBqD65MjemH","market":"us","size":114763},{"description":"GRAPHIC","seq":24,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip018.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip018.jpg","type":"GRAPHIC","id":"NTFILE3ET51XGjEwXy85n9","market":"us","size":101183},{"description":"GRAPHIC","seq":25,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/dec2023ip019.jpg","primary":false,"translateUrl":"","linkName":"dec2023ip019.jpg","type":"GRAPHIC","id":"NTFILEAE2NW9b6YbSXQNFv","market":"us","size":108947},{"description":"FIBK LOGO","seq":26,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000003/fibslogo2linea04a.jpg","primary":false,"translateUrl":"","linkName":"fibslogo2linea04a.jpg","type":"GRAPHIC","id":"NTFILE6s7taERwwge69Qge","market":"us","size":165531}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2024-01-30 13:00","pubTimestamp":1706590800,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17533082","market":"us","labels":[],"media":"sec.gov","original_id":"AN102387524000012-FIBK","pdf_url":"","pub_time":1706590800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form SC 13G - Statement of acquisition of beneficial ownership by individuals","symbol":"FIBK","title":"Form SC 13G - Statement of acquisition of beneficial ownership by individuals","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000102387524000012/0001023875-24-000012-index.htm","us_notice_code":"Form SC 13G","us_title_en":"Form SC 13G - Statement of acquisition of beneficial ownership by individuals","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000102387524000012/firs23in.htm","primary":true,"translateUrl":"","linkName":"firs23in.htm","type":"SC 13G","id":"NTFILE95c3WGwqs5zdLJjw","market":"us","size":92696}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2024-01-30 13:00","pubTimestamp":1706590800,"title_zh":"Form SC 13G - Statement of acquisition of beneficial ownership by individuals","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17379189","market":"us","labels":[],"media":"sec.gov","original_id":"AN149315223045764-FIBK","pdf_url":"","pub_time":1703134800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend]","symbol":"FIBK","title":"Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend]","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000149315223045764/0001493152-23-045764-index.htm","us_notice_code":"Form SC 13D/A","us_title_en":"Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000149315223045764/formsc13da.htm","primary":true,"translateUrl":"","linkName":"formsc13da.htm","type":"SC 13D/A","id":"NTFILE53cYc7D5eCayLxHG","market":"us","size":331202}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2023-12-21 13:00","pubTimestamp":1703134800,"title_zh":"Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17352108","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041323000202-FIBK","pdf_url":"","pub_time":1702592682000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000202/0000860413-23-000202-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 1.01: Entry into a Material Definitive Agreement;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"EX-10.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000202/fibk-20231214xex101_scottt.htm","primary":true,"translateUrl":"","linkName":"fibk-20231214xex101_scottt.htm","type":"EX-10.1","id":"NTFILE9hPitMyVCgk9w2Aa","market":"us","size":38614},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000202/fibk-20231214.htm","primary":false,"translateUrl":"","linkName":"fibk-20231214.htm","type":"8-K","id":"NTFILE7zmdcZTbDj18puAs","market":"us","size":33151}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2023-12-15 06:24","pubTimestamp":1702592682,"title_zh":"Form 8-K - Current report","summary_en":"Item 1.01: Entry into a Material Definitive Agreement;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17292308","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041323000194-FIBK","pdf_url":"","pub_time":1701447063000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000194/0000860413-23-000194-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-10.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000194/fibk-20231130xex101_meyerx.htm","primary":true,"translateUrl":"","linkName":"fibk-20231130xex101_meyerx.htm","type":"EX-10.1","id":"NTFILEBGytycjL4QXzP79B","market":"us","size":111736},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000194/fibk-20231130.htm","primary":false,"translateUrl":"","linkName":"fibk-20231130.htm","type":"8-K","id":"NTFILECfFvSCAg26yRtp3b","market":"us","size":37606},{"description":"EX-99.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000194/fibk-20231201xex991pr_meyer.htm","primary":false,"translateUrl":"","linkName":"fibk-20231201xex991pr_meyer.htm","type":"EX-99.1","id":"NTFILE4pDYLmRQYcikgSrf","market":"us","size":9533},{"description":"FIBK LOGO","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000194/fibslogo2linea04.jpg","primary":false,"translateUrl":"","linkName":"fibslogo2linea04.jpg","type":"GRAPHIC","id":"NTFILE9g6Eq6QXmUbt6eES","market":"us","size":165531}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2023-12-02 00:11","pubTimestamp":1701447063,"title_zh":"Form 8-K - Current report","summary_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17285767","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041323000190-FIBK","pdf_url":"","pub_time":1701320400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000190/0000860413-23-000190-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 4.01: Changes in Registrant's Certifying Accountant;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-16.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000190/fibk-ex161_letterfromrsmus.htm","primary":true,"translateUrl":"","linkName":"fibk-ex161_letterfromrsmus.htm","type":"EX-16.1","id":"NTFILEDtVGGSW2EYFRiXjh","market":"us","size":3262},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000190/fibk-20231128.htm","primary":false,"translateUrl":"","linkName":"fibk-20231128.htm","type":"8-K","id":"NTFILE52YP2z1oqc5bvPsc","market":"us","size":34742},{"description":"RSM LOGO","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000190/rsm_usxllp.jpg","primary":false,"translateUrl":"","linkName":"rsm_usxllp.jpg","type":"GRAPHIC","id":"NTFILEqJdr5jFLAGZGJ2FD","market":"us","size":4699}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2023-11-30 13:00","pubTimestamp":1701320400,"title_zh":"Form 8-K - Current report","summary_en":"Item 4.01: Changes in Registrant's Certifying Accountant;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17173724","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041323000186-FIBK","pdf_url":"","pub_time":1699032851000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","symbol":"FIBK","title":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000186/0000860413-23-000186-index.htm","us_notice_code":"Form 10-Q","us_title_en":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000186/fibk-20230930.htm","primary":true,"translateUrl":"","linkName":"fibk-20230930.htm","type":"10-Q","id":"NTFILE9HZF8JAt6qfWk59X","market":"us","size":4488613},{"description":"EX-31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000186/fibk-20230930xex311.htm","primary":false,"translateUrl":"","linkName":"fibk-20230930xex311.htm","type":"EX-31.1","id":"NTFILEGpqR1B1nceEabMLz","market":"us","size":10217},{"description":"EX-31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000186/fibk-20230930xex312.htm","primary":false,"translateUrl":"","linkName":"fibk-20230930xex312.htm","type":"EX-31.2","id":"NTFILEFeeJqmZvEYHLq4E9","market":"us","size":10367},{"description":"EX-32","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000186/fibk-20230930xex32.htm","primary":false,"translateUrl":"","linkName":"fibk-20230930xex32.htm","type":"EX-32","id":"NTFILE67rz1PBBYFW4BpTx","market":"us","size":4076}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"Quarterly Report","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"Quarterly Report","pubTime":"2023-11-04 01:34","pubTimestamp":1699032851,"title_zh":"Form 10-Q - Quarterly report [Sections 13 or 15(d","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17137459","market":"us","labels":[],"media":"sec.gov","original_id":"AN195004723004623-FIBK","pdf_url":"","pub_time":1698379200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000195004723004623/0001950047-23-004623-index.htm","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195004723004623/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILEE7ojwPZpVrLKBkgQ","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2023-10-27 12:00","pubTimestamp":1698379200,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17113603","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041323000182-FIBK","pdf_url":"","pub_time":1698206400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/0000860413-23-000182-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/fibk-20230930x8kpr.htm","primary":true,"translateUrl":"","linkName":"fibk-20230930x8kpr.htm","type":"EX-99.1","id":"NTFILE2Vmr2WLfFFrGjv3Q","market":"us","size":783007},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/fibk-20231025.htm","primary":false,"translateUrl":"","linkName":"fibk-20231025.htm","type":"8-K","id":"NTFILEayb8qAJp7HCJ8k7G","market":"us","size":33407},{"description":"EX-99.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip.htm","primary":false,"translateUrl":"","linkName":"sep2023ip.htm","type":"EX-99.2","id":"NTFILE4dQHdFnMvuEWPSDE","market":"us","size":34723},{"description":"FIBK LOGO","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/fibslogo2linea04.jpg","primary":false,"translateUrl":"","linkName":"fibslogo2linea04.jpg","type":"GRAPHIC","id":"NTFILE6jjTS5Pfn8naUop2","market":"us","size":165531},{"description":"GRAPHIC","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip001.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip001.jpg","type":"GRAPHIC","id":"NTFILE42h3rkWUVy5n3Rct","market":"us","size":292808},{"description":"GRAPHIC","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip002.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip002.jpg","type":"GRAPHIC","id":"NTFILEHrRWUG7uqgk9oKrz","market":"us","size":280816},{"description":"GRAPHIC","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip003.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip003.jpg","type":"GRAPHIC","id":"NTFILE5oMKQpj8QvXLRQ39","market":"us","size":98914},{"description":"GRAPHIC","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip004.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip004.jpg","type":"GRAPHIC","id":"NTFILEGiM3eTZtYbBhYKPU","market":"us","size":81369},{"description":"GRAPHIC","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip005.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip005.jpg","type":"GRAPHIC","id":"NTFILE2YQzXo8DFxEFAMTY","market":"us","size":169549},{"description":"GRAPHIC","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip006.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip006.jpg","type":"GRAPHIC","id":"NTFILEHv1bkCU6Cobzz1cy","market":"us","size":91523},{"description":"GRAPHIC","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip007.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip007.jpg","type":"GRAPHIC","id":"NTFILEBqim9eEp1arNFzSq","market":"us","size":86290},{"description":"GRAPHIC","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip008.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip008.jpg","type":"GRAPHIC","id":"NTFILEDigZTSFbim22bLR2","market":"us","size":103940},{"description":"GRAPHIC","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip009.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip009.jpg","type":"GRAPHIC","id":"NTFILE6mRC5t9eJQPnpspV","market":"us","size":103423},{"description":"GRAPHIC","seq":17,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip010.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip010.jpg","type":"GRAPHIC","id":"NTFILE4uhEYb1j5rVjCZh1","market":"us","size":90565},{"description":"GRAPHIC","seq":18,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip011.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip011.jpg","type":"GRAPHIC","id":"NTFILEG3qPqM7A1x4hrERf","market":"us","size":95813},{"description":"GRAPHIC","seq":19,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip012.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip012.jpg","type":"GRAPHIC","id":"NTFILE2jnYjZTremD7joUj","market":"us","size":102206},{"description":"GRAPHIC","seq":20,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip013.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip013.jpg","type":"GRAPHIC","id":"NTFILE6kyokhFkEyLhqGVB","market":"us","size":59743},{"description":"GRAPHIC","seq":21,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip014.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip014.jpg","type":"GRAPHIC","id":"NTFILE7kP5PfrjG19rPuN6","market":"us","size":83347},{"description":"GRAPHIC","seq":22,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip015.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip015.jpg","type":"GRAPHIC","id":"NTFILE8EsrR6q3YDgvxPuv","market":"us","size":91364},{"description":"GRAPHIC","seq":23,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip016.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip016.jpg","type":"GRAPHIC","id":"NTFILEEZv7exwpphFixtyr","market":"us","size":99882},{"description":"GRAPHIC","seq":24,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip017.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip017.jpg","type":"GRAPHIC","id":"NTFILE9JVWB29TGaeAC2wU","market":"us","size":276033},{"description":"GRAPHIC","seq":25,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip018.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip018.jpg","type":"GRAPHIC","id":"NTFILECkoZ2twb8bKAMYZk","market":"us","size":114780},{"description":"GRAPHIC","seq":26,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip019.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip019.jpg","type":"GRAPHIC","id":"NTFILELB9qocgLyGF5g7UJ","market":"us","size":100957},{"description":"GRAPHIC","seq":27,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000182/sep2023ip020.jpg","primary":false,"translateUrl":"","linkName":"sep2023ip020.jpg","type":"GRAPHIC","id":"NTFILE858ZrTiqXifTgLzG","market":"us","size":106380}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2023-10-25 12:00","pubTimestamp":1698206400,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"16954259","market":"us","labels":[],"media":"sec.gov","original_id":"AN195824423001770-FIBK","pdf_url":"","pub_time":1694642122000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/0001958244-23-001770-index.html","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195824423001770/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILEBWCUUD8eQGkp1F7M","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2023-09-14 05:55","pubTimestamp":1694642122,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"16954258","market":"us","labels":[],"media":"sec.gov","original_id":"AN195004723004009-FIBK","pdf_url":"","pub_time":1694639612000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/0001950047-23-004009-index.html","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195004723004009/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILE5oEqat3HhQrpnxiQ","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2023-09-14 05:13","pubTimestamp":1694639612,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"16954257","market":"us","labels":[],"media":"sec.gov","original_id":"AN195004723003994-FIBK","pdf_url":"","pub_time":1694636338000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/0001950047-23-003994-index.html","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195004723003994/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILE91DAmJJfWip5KSm2","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2023-09-14 04:18","pubTimestamp":1694636338,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"16944714","market":"us","labels":[],"media":"sec.gov","original_id":"AN195824423001761-FIBK","pdf_url":"","pub_time":1694468106000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 144 - Report of proposed sale of securities","symbol":"FIBK","title":"Form 144 - Report of proposed sale of securities","titleType":"Proposed Sale Of Securities","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/0001958244-23-001761-index.html","us_notice_code":"Form 144","us_title_en":"Form 144 - Report of proposed sale of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000195824423001761/xsl144X01/primary_doc.xml","primary":true,"translateUrl":"","linkName":"primary_doc.html","type":"144","id":"NTFILE7x9iaBd7H99zcUR6","market":"us","size":0}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Proposed Sale Of Securities","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Proposed Sale Of Securities","pubTime":"2023-09-12 05:35","pubTimestamp":1694468106,"title_zh":"Form 144 - Report of proposed sale of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"16878536","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041323000174-FIBK","pdf_url":"","pub_time":1693247864000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000174/0000860413-23-000174-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-10.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000174/fibk-20230824xex101_askerx.htm","primary":true,"translateUrl":"","linkName":"fibk-20230824xex101_askerx.htm","type":"EX-10.1","id":"NTFILE1aay2CRNWQYhR1W5","market":"us","size":111724},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000174/fibk-20230824.htm","primary":false,"translateUrl":"","linkName":"fibk-20230824.htm","type":"8-K","id":"NTFILE547pkQWemXYgevDf","market":"us","size":37706},{"description":"EX-99.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000174/fibk-20230824x8kpr_asker.htm","primary":false,"translateUrl":"","linkName":"fibk-20230824x8kpr_asker.htm","type":"EX-99.1","id":"NTFILECHvPGQCs9ykHB6j6","market":"us","size":9883},{"description":"FIBK LOGO","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000174/fibslogo2linea04.jpg","primary":false,"translateUrl":"","linkName":"fibslogo2linea04.jpg","type":"GRAPHIC","id":"NTFILE2f2P2SUQqrJxqqi5","market":"us","size":165531}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2023-08-29 02:37","pubTimestamp":1693247864,"title_zh":"Form 8-K - Current report","summary_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"16750919","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041323000171-FIBK","pdf_url":"","pub_time":1691171116000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","symbol":"FIBK","title":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000171/0000860413-23-000171-index.htm","us_notice_code":"Form 10-Q","us_title_en":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000171/fibk-20230630.htm","primary":true,"translateUrl":"","linkName":"fibk-20230630.htm","type":"10-Q","id":"NTFILE6iCk2f3DkcF6yKYX","market":"us","size":4508946},{"description":"EX-31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000171/fibk-20230630xex311.htm","primary":false,"translateUrl":"","linkName":"fibk-20230630xex311.htm","type":"EX-31.1","id":"NTFILEEys2DK2R5C3TF87J","market":"us","size":10215},{"description":"EX-31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000171/fibk-20230630xex312.htm","primary":false,"translateUrl":"","linkName":"fibk-20230630xex312.htm","type":"EX-31.2","id":"NTFILE4tJyY6tnvSX8AcJH","market":"us","size":10365},{"description":"EX-32","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000171/fibk-20230630xex32.htm","primary":false,"translateUrl":"","linkName":"fibk-20230630xex32.htm","type":"EX-32","id":"NTFILE45rSnhVqm9vRWLf6","market":"us","size":4069}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"Quarterly Report","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"Quarterly Report","pubTime":"2023-08-05 01:45","pubTimestamp":1691171116,"title_zh":"Form 10-Q - Quarterly report [Sections 13 or 15(d","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"16723377","market":"us","labels":[],"media":"sec.gov","original_id":"AN86041323000168-FIBK","pdf_url":"","pub_time":1690300800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"FIBK","title":"Form 8-K - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/0000860413-23-000168-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/fibk-20230630x8kpr.htm","primary":true,"translateUrl":"","linkName":"fibk-20230630x8kpr.htm","type":"EX-99.1","id":"NTFILE6nUy7GUgEkLPEMZP","market":"us","size":788088},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/fibk-20230726.htm","primary":false,"translateUrl":"","linkName":"fibk-20230726.htm","type":"8-K","id":"NTFILEBfab9EoUxT7Gd485","market":"us","size":33385},{"description":"EX-99.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip.htm","primary":false,"translateUrl":"","linkName":"jun2023ip.htm","type":"EX-99.2","id":"NTFILEGKZWXb6p3S4QTdt4","market":"us","size":39144},{"description":"FIBK LOGO","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/fibslogo2linea04a.jpg","primary":false,"translateUrl":"","linkName":"fibslogo2linea04a.jpg","type":"GRAPHIC","id":"NTFILEok6nR9wpvCjToBVT","market":"us","size":165531},{"description":"GRAPHIC","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip001.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip001.jpg","type":"GRAPHIC","id":"NTFILECVV4GbA7rrugZTwL","market":"us","size":292631},{"description":"GRAPHIC","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip002.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip002.jpg","type":"GRAPHIC","id":"NTFILE34u3iKx3hXY46HB6","market":"us","size":274619},{"description":"GRAPHIC","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip003.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip003.jpg","type":"GRAPHIC","id":"NTFILEGbrqkNkNz7AQzhQJ","market":"us","size":98919},{"description":"GRAPHIC","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip004.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip004.jpg","type":"GRAPHIC","id":"NTFILE6Ha2ibbUi9DdYJeE","market":"us","size":81368},{"description":"GRAPHIC","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip005.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip005.jpg","type":"GRAPHIC","id":"NTFILE8pHjW578XXAFaQYV","market":"us","size":155963},{"description":"GRAPHIC","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip006.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip006.jpg","type":"GRAPHIC","id":"NTFILE5e7KFTRvZTbm18zo","market":"us","size":83042},{"description":"GRAPHIC","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip007.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip007.jpg","type":"GRAPHIC","id":"NTFILEB4t8sTbvjeAu8R2Y","market":"us","size":80942},{"description":"GRAPHIC","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip008.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip008.jpg","type":"GRAPHIC","id":"NTFILE9NfXSYjps1BUCx5j","market":"us","size":97872},{"description":"GRAPHIC","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip009.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip009.jpg","type":"GRAPHIC","id":"NTFILE7Uy99RFxUMMrNJQa","market":"us","size":107493},{"description":"GRAPHIC","seq":17,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip010.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip010.jpg","type":"GRAPHIC","id":"NTFILEDeLTZEm9qrYjEjgp","market":"us","size":96867},{"description":"GRAPHIC","seq":18,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip011.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip011.jpg","type":"GRAPHIC","id":"NTFILE7mDqC1R9D3igeeRm","market":"us","size":75959},{"description":"GRAPHIC","seq":19,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip012.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip012.jpg","type":"GRAPHIC","id":"NTFILE5RCYsU6GWn8n1S6b","market":"us","size":98360},{"description":"GRAPHIC","seq":20,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip013.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip013.jpg","type":"GRAPHIC","id":"NTFILEGzVJWEDVXhpy43qv","market":"us","size":86222},{"description":"GRAPHIC","seq":21,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip014.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip014.jpg","type":"GRAPHIC","id":"NTFILEAjKTTA4VNa5UcmjU","market":"us","size":91025},{"description":"GRAPHIC","seq":22,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip015.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip015.jpg","type":"GRAPHIC","id":"NTFILE2G7Mwf1oCZkJcz4B","market":"us","size":102962},{"description":"GRAPHIC","seq":23,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip016.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip016.jpg","type":"GRAPHIC","id":"NTFILEFtFRcR8QdyyQuCPK","market":"us","size":47788},{"description":"GRAPHIC","seq":24,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip017.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip017.jpg","type":"GRAPHIC","id":"NTFILE558w3DXL4LxLMwak","market":"us","size":59517},{"description":"GRAPHIC","seq":25,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip018.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip018.jpg","type":"GRAPHIC","id":"NTFILE4PjD3fVfuDgMVgcr","market":"us","size":57340},{"description":"GRAPHIC","seq":26,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip019.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip019.jpg","type":"GRAPHIC","id":"NTFILE95DFmHkviMNELvL8","market":"us","size":84722},{"description":"GRAPHIC","seq":27,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip020.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip020.jpg","type":"GRAPHIC","id":"NTFILEAGmjmsHPuUin1bbq","market":"us","size":96556},{"description":"GRAPHIC","seq":28,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip021.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip021.jpg","type":"GRAPHIC","id":"NTFILE43o8F9cVQ52UHtEE","market":"us","size":101798},{"description":"GRAPHIC","seq":29,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip022.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip022.jpg","type":"GRAPHIC","id":"NTFILE8rTGDzULWy6NeSge","market":"us","size":269573},{"description":"GRAPHIC","seq":30,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip023.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip023.jpg","type":"GRAPHIC","id":"NTFILEE7v1u2d2i4Bc8xEe","market":"us","size":115048},{"description":"GRAPHIC","seq":31,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip024.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip024.jpg","type":"GRAPHIC","id":"NTFILE7NEzb8FcAsERwTBQ","market":"us","size":104769},{"description":"GRAPHIC","seq":32,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip025.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip025.jpg","type":"GRAPHIC","id":"NTFILEDpWhE1S8RV2rySyj","market":"us","size":76564},{"description":"GRAPHIC","seq":33,"linkUrl":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000168/jun2023ip026.jpg","primary":false,"translateUrl":"","linkName":"jun2023ip026.jpg","type":"GRAPHIC","id":"NTFILEJ6j654kG3pnwwT79","market":"us","size":79801}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2023-07-26 00:00","pubTimestamp":1690300800,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0}],"pageSize":20,"totalPage":18,"pageCount":5,"totalSize":360,"code":"91000000","status":"200"}]}}