MDU Resources

19.95

-0.3600-1.77%

Post-market: 19.950.00000.00%19:30 EDT

Volume:1.53M

Turnover:30.52M

Market Cap:4.20B

PE:21.03

High:20.49

Open:20.49

Low:19.88

Close:20.31

52wk High:22.98

52wk Low:15.76

Shares:210.35M

Float Shares:208.08M

Volume Ratio:1.26

T/O Rate:0.73%

Dividend:0.56

Dividend Rate:2.81%

EPS(TTM):0.9485

EPS(LYR):0.9251

ROE:6.89%

ROA:2.65%

PB:1.43

PE(LYR):21.56

Loading ...

Overview Company News Filings

Nov 12, 2020

{"basename":"","ssrTDKData":{"titleTemplate":"%s - Tiger Brokers","title":"Tiger Brokers HK | Online Trading in stocks, bonds & ETFS","description":"Discover Tiger Brokers HK, an online trading platform for stocks&ETFs, options&futures, bonds and crypto. Open an account to enjoy low commission trading today!","keywords":"tiger trading,tiger security,tiger broker hk,tigers co ltd,tiger trade hk,tiger brokers hk,stock broker,securities broker,online brokerage,hong kong broker,hk broker,online stock trading,online trading platform,stock trading platforms,trading application,stock trading,stock trading hong kong,buying stocks in hong kong,tiger brokers","social":{"ogDescription":"Discover Tiger Brokers HK, an online trading platform for stocks&ETFs, options&futures, bonds and crypto. Open an account to enjoy low commission trading today!","ogImage":"https://c1.itigergrowtha.com/portal5/static/media/og-logo.0a0bd8dc.png","ogUrl":"https://www.gotigerhk.com/stock/MDU/filings?page=8"},"companyName":"Tiger Brokers"},"pageData":{"isMobile":false,"isTiger":false,"isTTM":true,"region":"HKG","license":"TBHK","edition":"fundamental","symbol":"MDU","isAnalysisPage":false},"__swrFallback__":{"@#url:\"https://hq.skytigris.cn/stock_info/detail/global\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"MDU\",,,,,undefined,":{"symbol":"MDU","market":"US","secType":"STK","nameCN":"MDU Resources","latestPrice":19.95,"timestamp":1787342400000,"preClose":20.31,"halted":0,"volume":1529167,"hourTrading":{"tag":"盘后","latestPrice":19.95,"preClose":19.95,"latestTime":"19:30 EDT","volume":223642,"amount":4461657.05,"timestamp":1787355003735,"change":0,"changeRate":0,"amplitude":0},"delay":0,"changeRate":-0.017725258493353,"floatShares":208082773,"shares":210349456,"eps":0.948506,"marketStatus":"Not Yet Opened","change":-0.36,"latestTime":"08-21 16:00:00 EDT","open":20.49,"high":20.49,"low":19.875,"amount":30524038.90374,"amplitude":0.030281,"askPrice":0,"askSize":0,"bidPrice":0,"bidSize":0,"shortable":3,"etf":0,"ttmEps":0.948506,"tradingStatus":0,"nextMarketStatus":{"tag":"Pre-Mkt","tradingStatus":1,"beginTime":1787558400000},"marketStatusCode":0,"adr":0,"adrRate":0,"listingDate":838958400000,"exchange":"NYSE","adjPreClose":20.31,"dividendRate":0.02807,"preHourTrading":{"tag":"盘前","latestPrice":20.21,"preClose":20.31,"latestTime":"09:18 EDT","volume":128,"amount":2588.489728,"timestamp":1787318281275,"change":-0.1,"changeRate":-0.004924,"amplitude":0.012309},"postHourTrading":{"tag":"盘后","latestPrice":19.95,"preClose":19.95,"latestTime":"19:30 EDT","volume":223642,"amount":4461657.05,"timestamp":1787355003735,"change":0,"changeRate":0,"amplitude":0},"volumeRatio":1.2584056679115854,"impliedVol":0.124,"impliedVolPercentile":0.132},"@#url:\"https://hq.skytigris.cn/stock_info/fundamental/all\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"MDU\",,,,,undefined,":{"symbol":"MDU","floatShares":208082773,"roa":"2.65%","roe":"6.89%","lyrEps":0.925129,"volumeRatio":1.2584056679115854,"shares":210349456,"dividePrice":0.56,"high":20.49,"amplitude":0.030281,"preClose":20.31,"low":19.875,"week52Low":15.76,"pbRate":"1.43","psRate":"2.29","week52High":22.98,"institutionHeld":0.9547,"latestPrice":19.95,"eps":0.948506,"divideRate":0.02807,"volume":1529167,"delay":0,"ttmEps":0.948506,"open":20.49,"prevYearClose":19.52,"prevWeekClose":20.65,"prevMonthClose":19.95,"prevQuarterClose":21.21,"fiveDayClose":20.65,"twentyDayClose":21.25,"sixtyDayClose":21.91,"dividendPayoutRate":0.5794121970559423,"dividendFrequency":"Q","dividendGrowthYears":1,"dividendGrowthRate":0.058823529411764754,"fiveYearAvgDividendRate":0.02948874103737888},"@#url:\"https://hq.skytigris.cn/fundamental/corporate_actions/details/MDU\",params:#limit:5,,,undefined,":[{"date":"2026-09-10","symbol":"MDU","amount":0.145,"announcedDate":"2026-08-13","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2026-09-10","defaultRemindTime":1789047000000,"name":"MDU Resources Group Inc","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2026-10-01","payableDate":"2026-09-10","currency":"USD","dateTimestamp":1789012800000,"payDate":"2026-10-01"},{"market":"US","date":"2026-08-06","symbol":"MDU","fiscalQuarterEnding":"2026/06","expectedEps":0.08,"name":null,"time":"Pre-MKt","type":"earning","dateTimestamp":1785988800000,"reportTimeType":"pre","actualEps":0.09},{"date":"2026-06-11","symbol":"MDU","amount":0.14,"announcedDate":"2026-05-13","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2026-06-11","defaultRemindTime":1781184600000,"name":"MDU Resources Group Inc","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2026-07-01","payableDate":"2026-06-11","currency":"USD","dateTimestamp":1781150400000,"payDate":"2026-07-01"},{"market":"US","date":"2026-05-07","symbol":"MDU","fiscalQuarterEnding":"2026/03","expectedEps":0.42,"name":null,"time":"Pre-MKt","type":"earning","dateTimestamp":1778126400000,"reportTimeType":"pre","actualEps":0.39},{"date":"2026-03-12","symbol":"MDU","amount":0.14,"announcedDate":"2026-02-19","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2026-03-12","defaultRemindTime":1773322200000,"name":"MDU Resources Group Inc","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2026-04-01","payableDate":"2026-03-12","currency":"USD","dateTimestamp":1773288000000,"payDate":"2026-04-01"}],"@#url:\"https://hq.skytigris.cn/fundamental/dividend/history\",params:#symbol:\"MDU\",market:\"US\",,,undefined,":[{"executeDate":"2016-09-06","recordDate":"2016-09-08","paymentDate":"2016-10-01","value":0.1875,"currency":"USD"},{"executeDate":"2016-12-06","recordDate":"2016-12-08","paymentDate":"2017-01-01","value":0.1925,"currency":"USD"},{"executeDate":"2017-03-07","recordDate":"2017-03-09","paymentDate":"2017-04-01","value":0.1925,"currency":"USD"},{"executeDate":"2017-06-06","recordDate":"2017-06-08","paymentDate":"2017-07-01","value":0.1925,"currency":"USD"},{"executeDate":"2017-09-13","recordDate":"2017-09-14","paymentDate":"2017-10-01","value":0.1925,"currency":"USD"}],"@#url:\"https://hq.skytigris.cn/fundamental/estimate/recommendation\",params:#symbol:\"MDU\",market:\"US\",delay:false,,,undefined,":{"strongBuy":0.4444,"buy":0.2222,"hold":0.3333,"sell":0,"strongSell":0,"meanLabel":"BUY","meanPercent":0.2222,"analysts":9,"updateTime":1786075200000},"@#url:\"https://hq.skytigris.cn/value_analysis/stock/MDU\",params:#withQuantilePoint:true,period:\"5year\",factor:\"peRate\",delay:false,algorithm:1,,,undefined,":{"brief":{"id":"MDU","date":"2026-08-21","current":21.033077,"percent":0.848193,"low":7.56446,"twenty":11.036452,"median":14.605999,"eighty":18.498227,"high":25.756639,"avg":15.217512,"sd":4.450716,"marketCap":4272197451},"quantilePoints":[{"date":"2021-08-27","current":15.673273,"twenty":-8.969175,"median":15.930576,"eighty":18.929887,"marketCap":6546616276},{"date":"2021-09-03","current":15.590884,"twenty":-8.953305,"median":15.930576,"eighty":18.929887,"marketCap":6512203018},{"date":"2021-09-10","current":14.951158,"twenty":-8.934129,"median":15.930576,"eighty":18.929887,"marketCap":6244994190},{"date":"2021-09-17","current":14.524675,"twenty":-8.899082,"median":15.930576,"eighty":18.929887,"marketCap":6066854972},{"date":"2021-09-24","current":14.277508,"twenty":-8.840893,"median":15.930576,"eighty":18.929887,"marketCap":5963615197},{"date":"2021-10-01","current":14.684606,"twenty":-8.822378,"median":15.930576,"eighty":18.929887,"marketCap":6133657179},{"date":"2021-10-08","current":14.946312,"twenty":-8.753608,"median":15.930576,"eighty":18.929887,"marketCap":6242969881},{"date":"2021-10-15","current":15.004469,"twenty":-8.717239,"median":15.930576,"eighty":18.929887,"marketCap":6267261592},{"date":"2021-10-22","current":15.115936,"twenty":-8.641857,"median":15.930576,"eighty":18.929887,"marketCap":6313820706},{"date":"2021-10-29","current":14.893002,"twenty":-8.625325,"median":15.928792,"eighty":18.9297,"marketCap":6220702478},{"date":"2021-11-05","current":14.510272,"twenty":11.127817,"median":15.928792,"eighty":18.9297,"marketCap":5860568326},{"date":"2021-11-12","current":14.55055,"twenty":11.85635,"median":15.928792,"eighty":18.9297,"marketCap":5876836386},{"date":"2021-11-19","current":14.334054,"twenty":12.323536,"median":15.928792,"eighty":18.9297,"marketCap":5789395567},{"date":"2021-11-26","current":14.238393,"twenty":12.446307,"median":15.928792,"eighty":18.9297,"marketCap":5750758927},{"date":"2021-12-03","current":14.157837,"twenty":12.570815,"median":15.928792,"eighty":18.9297,"marketCap":5718222808},{"date":"2021-12-10","current":14.389437,"twenty":12.621353,"median":15.928792,"eighty":18.9297,"marketCap":5811764149},{"date":"2021-12-17","current":14.731803,"twenty":12.697566,"median":15.928792,"eighty":18.9297,"marketCap":5950042652},{"date":"2021-12-23","current":14.847603,"twenty":12.751353,"median":15.928792,"eighty":18.9297,"marketCap":5996813322},{"date":"2021-12-31","current":15.5273,"twenty":12.820427,"median":15.928792,"eighty":18.9297,"marketCap":6271336821},{"date":"2022-01-07","current":15.834423,"twenty":12.87255,"median":15.927008,"eighty":18.929513,"marketCap":6395380773},{"date":"2022-01-14","current":15.335978,"twenty":12.934243,"median":15.927008,"eighty":18.929513,"marketCap":6194063540},{"date":"2022-01-21","current":14.595864,"twenty":13.004597,"median":15.927008,"eighty":18.929513,"marketCap":5895137952},{"date":"2022-01-28","current":14.671386,"twenty":13.0509,"median":15.918515,"eighty":18.929326,"marketCap":5925640563},{"date":"2022-02-04","current":14.359228,"twenty":13.11976,"median":15.918515,"eighty":18.929326,"marketCap":5799563104},{"date":"2022-02-11","current":14.64371,"twenty":13.141401,"median":15.918515,"eighty":18.929326,"marketCap":5537240650},{"date":"2022-02-18","current":14.848066,"twenty":13.168446,"median":15.918515,"eighty":18.929326,"marketCap":5614513931},{"date":"2022-02-25","current":14.579176,"twenty":13.197467,"median":15.918515,"eighty":18.929326,"marketCap":5512838561},{"date":"2022-03-04","current":14.22962,"twenty":13.234754,"median":15.918515,"eighty":18.929326,"marketCap":5380660580},{"date":"2022-03-11","current":13.546642,"twenty":13.251682,"median":15.918515,"eighty":18.929326,"marketCap":5122405140},{"date":"2022-03-18","current":13.853175,"twenty":13.279517,"median":15.918515,"eighty":18.929326,"marketCap":5238315062},{"date":"2022-03-25","current":13.799398,"twenty":13.286426,"median":15.918515,"eighty":18.929326,"marketCap":5217979988},{"date":"2022-04-01","current":14.412465,"twenty":13.302807,"median":15.918515,"eighty":18.929326,"marketCap":5449799832},{"date":"2022-04-08","current":14.412465,"twenty":13.325055,"median":15.918515,"eighty":18.929326,"marketCap":5449799832},{"date":"2022-04-14","current":14.611443,"twenty":13.358793,"median":15.918515,"eighty":18.929326,"marketCap":5525039605},{"date":"2022-04-22","current":14.654465,"twenty":13.385654,"median":15.918515,"eighty":18.929326,"marketCap":5541307665},{"date":"2022-04-29","current":13.853175,"twenty":13.412739,"median":15.918515,"eighty":18.929326,"marketCap":5238315062},{"date":"2022-05-06","current":14.550915,"twenty":13.429118,"median":15.918515,"eighty":18.929326,"marketCap":5205778944},{"date":"2022-05-13","current":14.704382,"twenty":13.460897,"median":15.918515,"eighty":18.929326,"marketCap":5260683643},{"date":"2022-05-20","current":15.102258,"twenty":13.518651,"median":15.918515,"eighty":18.929326,"marketCap":5403029161},{"date":"2022-05-27","current":15.602446,"twenty":13.547905,"median":15.918515,"eighty":18.929326,"marketCap":5581977813},{"date":"2022-06-03","current":15.556974,"twenty":13.57829,"median":15.918515,"eighty":18.929326,"marketCap":5565709753},{"date":"2022-06-10","current":15.403508,"twenty":13.636479,"median":15.918515,"eighty":18.929326,"marketCap":5510805054},{"date":"2022-06-17","current":14.795325,"twenty":13.685473,"median":15.918515,"eighty":18.929326,"marketCap":5293219762},{"date":"2022-06-24","current":15.812752,"twenty":13.709648,"median":15.927008,"eighty":18.929513,"marketCap":5657217586},{"date":"2022-07-01","current":15.727493,"twenty":13.736824,"median":15.927008,"eighty":18.929513,"marketCap":5626714975},{"date":"2022-07-08","current":15.198885,"twenty":13.76515,"median":15.927008,"eighty":18.929513,"marketCap":5437598787},{"date":"2022-07-15","current":15.272777,"twenty":13.800566,"median":15.927008,"eighty":18.929513,"marketCap":5464034383},{"date":"2022-07-22","current":15.323932,"twenty":13.820435,"median":15.927008,"eighty":18.929513,"marketCap":5482335950},{"date":"2022-07-29","current":16.239048,"twenty":13.84461,"median":15.934979,"eighty":18.929513,"marketCap":5809730641},{"date":"2022-08-05","current":18.089939,"twenty":13.861899,"median":15.949167,"eighty":18.929513,"marketCap":5937841608},{"date":"2022-08-12","current":19.328976,"twenty":13.895475,"median":15.990488,"eighty":18.937813,"marketCap":6344543088},{"date":"2022-08-19","current":19.756444,"twenty":13.916956,"median":16.077971,"eighty":18.959153,"marketCap":6484855098},{"date":"2022-08-26","current":19.260829,"twenty":13.926903,"median":16.123795,"eighty":18.974807,"marketCap":6322174506},{"date":"2022-09-02","current":18.554578,"twenty":13.947576,"median":16.182382,"eighty":18.977295,"marketCap":6090354663},{"date":"2022-09-09","current":18.95107,"twenty":13.982242,"median":16.198531,"eighty":18.977295,"marketCap":6220499136},{"date":"2022-09-16","current":18.269599,"twenty":14.047785,"median":16.232288,"eighty":18.977295,"marketCap":5996813322},{"date":"2022-09-23","current":17.501397,"twenty":14.098987,"median":16.267571,"eighty":18.977295,"marketCap":5744658405},{"date":"2022-09-30","current":16.94383,"twenty":14.128366,"median":16.299802,"eighty":18.977295,"marketCap":5561642739},{"date":"2022-10-07","current":17.148271,"twenty":14.156738,"median":16.348027,"eighty":18.977295,"marketCap":5628748483},{"date":"2022-10-14","current":17.086319,"twenty":14.199999,"median":16.396251,"eighty":18.977295,"marketCap":5608413409},{"date":"2022-10-21","current":17.730618,"twenty":14.227451,"median":16.446897,"eighty":18.977295,"marketCap":5819898178},{"date":"2022-10-28","current":17.761594,"twenty":14.252888,"median":16.478232,"eighty":18.977295,"marketCap":5830065715},{"date":"2022-11-04","current":17.502401,"twenty":14.265547,"median":16.510374,"eighty":18.974807,"marketCap":5897171460},{"date":"2022-11-11","current":18.250779,"twenty":14.265547,"median":16.510374,"eighty":18.959657,"marketCap":6149326377},{"date":"2022-11-18","current":18.449945,"twenty":14.265547,"median":16.510374,"eighty":18.94355,"marketCap":6216432121},{"date":"2022-11-25","current":18.968981,"twenty":14.265547,"median":16.510374,"eighty":18.932428,"marketCap":6391313758},{"date":"2022-12-02","current":19.041405,"twenty":14.265547,"median":16.510374,"eighty":18.929513,"marketCap":6415715847},{"date":"2022-12-09","current":18.468051,"twenty":14.265547,"median":16.510374,"eighty":18.903173,"marketCap":6222532644},{"date":"2022-12-16","current":17.804166,"twenty":14.265547,"median":16.510374,"eighty":18.894585,"marketCap":5998846830},{"date":"2022-12-23","current":18.347344,"twenty":14.265547,"median":16.510374,"eighty":18.877709,"marketCap":6181862496},{"date":"2022-12-30","current":18.311133,"twenty":14.265547,"median":16.510374,"eighty":18.868818,"marketCap":6169661451},{"date":"2023-01-06","current":18.425803,"twenty":14.265547,"median":16.510374,"eighty":18.849464,"marketCap":6208298092},{"date":"2023-01-13","current":18.655145,"twenty":14.265547,"median":16.510374,"eighty":18.829946,"marketCap":6285571373},{"date":"2023-01-20","current":18.130073,"twenty":14.265547,"median":16.510374,"eighty":18.814311,"marketCap":6108656229},{"date":"2023-01-27","current":18.468051,"twenty":14.265547,"median":16.510374,"eighty":18.791613,"marketCap":6222532644},{"date":"2023-02-03","current":18.715498,"twenty":14.265547,"median":16.510374,"eighty":18.781981,"marketCap":6305906447},{"date":"2023-02-10","current":17.037705,"twenty":14.265547,"median":16.510374,"eighty":18.778193,"marketCap":6261169284},{"date":"2023-02-17","current":17.441652,"twenty":14.265547,"median":16.510374,"eighty":18.771719,"marketCap":6409615324},{"date":"2023-02-24","current":17.707261,"twenty":14.265547,"median":16.510374,"eighty":18.766199,"marketCap":6507223680},{"date":"2023-03-03","current":17.531572,"twenty":14.265547,"median":16.510374,"eighty":18.763275,"marketCap":6442659974},{"date":"2023-03-10","current":16.539742,"twenty":14.265547,"median":16.510374,"eighty":18.763275,"marketCap":6078173206},{"date":"2023-03-17","current":16.085384,"twenty":14.265547,"median":16.478232,"eighty":18.747649,"marketCap":5911201613},{"date":"2023-03-24","current":16.102007,"twenty":14.265547,"median":16.453245,"eighty":18.723803,"marketCap":5917310330},{"date":"2023-03-31","current":16.888822,"twenty":14.266406,"median":16.450071,"eighty":18.707391,"marketCap":6206456258},{"date":"2023-04-06","current":16.534201,"twenty":14.266406,"median":16.450071,"eighty":18.684407,"marketCap":6076136967},{"date":"2023-04-14","current":16.661643,"twenty":14.265547,"median":16.446897,"eighty":18.668039,"marketCap":6122970462},{"date":"2023-04-21","current":16.52866,"twenty":14.265547,"median":16.43483,"eighty":18.646821,"marketCap":6074100728},{"date":"2023-04-28","current":16.113089,"twenty":14.265547,"median":16.405896,"eighty":18.626513,"marketCap":5921382808},{"date":"2023-05-05","current":15.459084,"twenty":14.265547,"median":16.395677,"eighty":18.616942,"marketCap":5782918561},{"date":"2023-05-12","current":15.895681,"twenty":14.265547,"median":16.338382,"eighty":18.600863,"marketCap":5946240491},{"date":"2023-05-19","current":15.781363,"twenty":14.264687,"median":16.322435,"eighty":18.587145,"marketCap":5903476433},{"date":"2023-05-26","current":15.993668,"twenty":14.264687,"median":16.281178,"eighty":18.580491,"marketCap":5982895398},{"date":"2023-06-02","current":10.713254,"twenty":14.2628,"median":16.264397,"eighty":18.574328,"marketCap":4007603180},{"date":"2023-06-09","current":11.355613,"twenty":14.239186,"median":16.235668,"eighty":18.564022,"marketCap":4247896460},{"date":"2023-06-16","current":11.235851,"twenty":14.219716,"median":16.202108,"eighty":18.550183,"marketCap":4203096018},{"date":"2023-06-23","current":11.099758,"twenty":14.184156,"median":16.185073,"eighty":18.542016,"marketCap":4152186425},{"date":"2023-06-30","current":11.437269,"twenty":14.15509,"median":16.163507,"eighty":18.535087,"marketCap":4278442216},{"date":"2023-07-07","current":11.377388,"twenty":14.13282,"median":16.118442,"eighty":18.522368,"marketCap":4256041995},{"date":"2023-07-14","current":11.840105,"twenty":14.101291,"median":16.087724,"eighty":18.513144,"marketCap":4429134612},{"date":"2023-07-21","current":11.959867,"twenty":14.053591,"median":16.065804,"eighty":18.498227,"marketCap":4473935054},{"date":"2023-07-28","current":12.003417,"twenty":13.982242,"median":15.986966,"eighty":18.488077,"marketCap":4490226124},{"date":"2023-08-04","current":10.034405,"twenty":13.941824,"median":15.961006,"eighty":18.476571,"marketCap":4355824798},{"date":"2023-08-11","current":9.940261,"twenty":13.924561,"median":15.944673,"eighty":18.471409,"marketCap":4315097123},{"date":"2023-08-18","current":9.602508,"twenty":13.913614,"median":15.92946,"eighty":18.464191,"marketCap":4168477495},{"date":"2023-08-25","current":9.405485,"twenty":13.892169,"median":15.893566,"eighty":18.449945,"marketCap":4082949378},{"date":"2023-09-01","current":9.550907,"twenty":13.859602,"median":15.882582,"eighty":18.424097,"marketCap":4146077274},{"date":"2023-09-08","current":9.147479,"twenty":13.84461,"median":15.854861,"eighty":18.418284,"marketCap":3970948273},{"date":"2023-09-15","current":9.330429,"twenty":13.826286,"median":15.833225,"eighty":18.407217,"marketCap":4050367238},{"date":"2023-09-22","current":9.503997,"twenty":13.800699,"median":15.795765,"eighty":18.407217,"marketCap":4125713436},{"date":"2023-09-29","current":9.274137,"twenty":13.766543,"median":15.778223,"eighty":18.407217,"marketCap":4025930634},{"date":"2023-10-06","current":8.894165,"twenty":13.731696,"median":15.748223,"eighty":18.407217,"marketCap":3860983552},{"date":"2023-10-13","current":8.96453,"twenty":13.70951,"median":15.724615,"eighty":18.407217,"marketCap":3891529308},{"date":"2023-10-20","current":8.87071,"twenty":13.681511,"median":15.669702,"eighty":18.407217,"marketCap":3850801633},{"date":"2023-10-27","current":8.715906,"twenty":13.643931,"median":15.658215,"eighty":18.407506,"marketCap":3783600970},{"date":"2023-11-03","current":10.596737,"twenty":13.596937,"median":15.64135,"eighty":18.407506,"marketCap":3826365028},{"date":"2023-11-10","current":10.23093,"twenty":13.548954,"median":15.606333,"eighty":18.407506,"marketCap":3694000086},{"date":"2023-11-17","current":10.541129,"twenty":13.523081,"median":15.582367,"eighty":18.407506,"marketCap":3806001191},{"date":"2023-11-24","current":10.721609,"twenty":13.48177,"median":15.562658,"eighty":18.407506,"marketCap":3871165470},{"date":"2023-12-01","current":10.794928,"twenty":13.440955,"median":15.529743,"eighty":18.407506,"marketCap":3897638459},{"date":"2023-12-08","current":10.811848,"twenty":13.418043,"median":15.501696,"eighty":18.407409,"marketCap":3903747610},{"date":"2023-12-15","current":11.189727,"twenty":13.392694,"median":15.476952,"eighty":18.407409,"marketCap":4040185320},{"date":"2023-12-22","current":11.110768,"twenty":13.372268,"median":15.429435,"eighty":18.407409,"marketCap":4011675948},{"date":"2023-12-27","current":11.302527,"twenty":13.357534,"median":15.429435,"eighty":18.407409,"marketCap":4080912994},{"date":"2024-01-05","current":10.935928,"twenty":13.325714,"median":15.441709,"eighty":18.407698,"marketCap":3948548052},{"date":"2024-01-12","current":11.020528,"twenty":13.303281,"median":15.431927,"eighty":18.407698,"marketCap":3979093808},{"date":"2024-01-19","current":10.704689,"twenty":13.286455,"median":15.418928,"eighty":18.408306,"marketCap":3865056319},{"date":"2024-01-26","current":10.969768,"twenty":13.280847,"median":15.361152,"eighty":18.407698,"marketCap":3960766354},{"date":"2024-02-02","current":11.251767,"twenty":13.258413,"median":15.324187,"eighty":18.407698,"marketCap":4062585541},{"date":"2024-02-09","current":9.762071,"twenty":13.236125,"median":15.296738,"eighty":18.406445,"marketCap":4048330855},{"date":"2024-02-16","current":10.238389,"twenty":13.213545,"median":15.278461,"eighty":18.39271,"marketCap":4245860077},{"date":"2024-02-23","current":10.336599,"twenty":13.179894,"median":15.245352,"eighty":18.380716,"marketCap":4286587751},{"date":"2024-03-01","current":10.648432,"twenty":13.155831,"median":15.230147,"eighty":18.36581,"marketCap":4415979471},{"date":"2024-03-08","current":10.879279,"twenty":13.128981,"median":15.210093,"eighty":18.342491,"marketCap":4511713343},{"date":"2024-03-15","current":11.129773,"twenty":13.066604,"median":15.193055,"eighty":18.341309,"marketCap":4615594779},{"date":"2024-03-22","current":11.365532,"twenty":13.011597,"median":15.159745,"eighty":18.330211,"marketCap":4713365542},{"date":"2024-03-28","current":12.033515,"twenty":12.939852,"median":15.144644,"eighty":18.316328,"marketCap":4990382705},{"date":"2024-04-05","current":12.22998,"twenty":12.877037,"median":15.11931,"eighty":18.288185,"marketCap":5071858341},{"date":"2024-04-12","current":12.008956,"twenty":12.815344,"median":15.102258,"eighty":18.279536,"marketCap":4980198250},{"date":"2024-04-19","current":11.591467,"twenty":12.748042,"median":15.072318,"eighty":18.260885,"marketCap":4807062524},{"date":"2024-04-26","current":12.180864,"twenty":12.677375,"median":15.063865,"eighty":18.250779,"marketCap":5051489432},{"date":"2024-05-03","current":10.704036,"twenty":12.596614,"median":15.018197,"eighty":18.236076,"marketCap":5108522377},{"date":"2024-05-10","current":10.915291,"twenty":12.569694,"median":14.994776,"eighty":18.200843,"marketCap":5209344455},{"date":"2024-05-17","current":10.723045,"twenty":12.456775,"median":14.965698,"eighty":18.179279,"marketCap":5117594748},{"date":"2024-05-24","current":10.761494,"twenty":12.383048,"median":14.952887,"eighty":18.15417,"marketCap":5135944690},{"date":"2024-05-31","current":10.782855,"twenty":12.313577,"median":14.941465,"eighty":18.152972,"marketCap":5146139101},{"date":"2024-06-07","current":10.453901,"twenty":12.214218,"median":14.900711,"eighty":18.135955,"marketCap":4989145159},{"date":"2024-06-14","current":10.458173,"twenty":12.118245,"median":14.882534,"eighty":18.115591,"marketCap":4991184041},{"date":"2024-06-21","current":10.795671,"twenty":12.057854,"median":14.870786,"eighty":18.089939,"marketCap":5152255748},{"date":"2024-06-28","current":10.723045,"twenty":12.003417,"median":14.847603,"eighty":18.051614,"marketCap":5117594748},{"date":"2024-07-05","current":10.49235,"twenty":11.959867,"median":14.811647,"eighty":18.015428,"marketCap":5007495100},{"date":"2024-07-12","current":10.808488,"twenty":11.834661,"median":14.795325,"eighty":17.928864,"marketCap":5158372396},{"date":"2024-07-19","current":11.175891,"twenty":11.791111,"median":14.776688,"eighty":17.87659,"marketCap":5333716279},{"date":"2024-07-26","current":11.611648,"twenty":11.618855,"median":14.751942,"eighty":17.78018,"marketCap":5541682281},{"date":"2024-08-02","current":11.081904,"twenty":11.57182,"median":14.704382,"eighty":17.646323,"marketCap":5288860867},{"date":"2024-08-09","current":12.253423,"twenty":11.509117,"median":14.684606,"eighty":17.531572,"marketCap":4987106277},{"date":"2024-08-16","current":12.373653,"twenty":11.509117,"median":14.654465,"eighty":17.501397,"marketCap":5036039453},{"date":"2024-08-23","current":12.624131,"twenty":11.509117,"median":14.636174,"eighty":17.44564,"marketCap":5137983572},{"date":"2024-08-30","current":12.869601,"twenty":11.509117,"median":14.61191,"eighty":17.413985,"marketCap":5237888808},{"date":"2024-09-06","current":12.388681,"twenty":11.509117,"median":14.605933,"eighty":17.321736,"marketCap":5042156101},{"date":"2024-09-13","current":13.731248,"twenty":11.509117,"median":14.579176,"eighty":17.270113,"marketCap":5588576576},{"date":"2024-09-20","current":13.666123,"twenty":11.509117,"median":14.55055,"eighty":17.242079,"marketCap":5562071105},{"date":"2024-09-27","current":13.731248,"twenty":11.509117,"median":14.525377,"eighty":17.216298,"marketCap":5588576576},{"date":"2024-10-04","current":13.651094,"twenty":11.509117,"median":14.505237,"eighty":17.179247,"marketCap":5555954458},{"date":"2024-10-11","current":14.317368,"twenty":11.509117,"median":14.480063,"eighty":17.092551,"marketCap":5827125813},{"date":"2024-10-18","current":15.168996,"twenty":11.509117,"median":14.459924,"eighty":17.030678,"marketCap":6173735816},{"date":"2024-10-25","current":14.417559,"twenty":11.509117,"median":14.452627,"eighty":16.937867,"marketCap":5867903460},{"date":"2024-11-01","current":7.56446,"twenty":11.483484,"median":14.44606,"eighty":16.82233,"marketCap":3078712378},{"date":"2024-11-08","current":9.215735,"twenty":11.426382,"median":14.419646,"eighty":16.661643,"marketCap":3655716089},{"date":"2024-11-15","current":9.426468,"twenty":11.377388,"median":14.412465,"eighty":16.618083,"marketCap":3739310266},{"date":"2024-11-22","current":10.248843,"twenty":11.339282,"median":14.389437,"eighty":16.578529,"marketCap":4065531445},{"date":"2024-11-29","current":10.300241,"twenty":11.296769,"median":14.379283,"eighty":16.539742,"marketCap":4085920269},{"date":"2024-12-06","current":10.00727,"twenty":11.21952,"median":14.359228,"eighty":16.517578,"marketCap":3969703974},{"date":"2024-12-13","current":9.6886,"twenty":11.189727,"median":14.317368,"eighty":16.478791,"marketCap":3843293267},{"date":"2024-12-20","current":9.303112,"twenty":11.172807,"median":14.283769,"eighty":16.43483,"marketCap":3690377089},{"date":"2024-12-27","current":9.35451,"twenty":11.129773,"median":14.262969,"eighty":16.396251,"marketCap":3710765913},{"date":"2025-01-03","current":9.333951,"twenty":11.110768,"median":14.243428,"eighty":16.381006,"marketCap":3702610383},{"date":"2025-01-10","current":9.112938,"twenty":11.093225,"median":14.226909,"eighty":16.325268,"marketCap":3614938442},{"date":"2025-01-17","current":9.462447,"twenty":11.075268,"median":14.199316,"eighty":16.274884,"marketCap":3753582443},{"date":"2025-01-24","current":9.303112,"twenty":11.048728,"median":14.159477,"eighty":16.257365,"marketCap":3690377089},{"date":"2025-01-31","current":9.159196,"twenty":11.037249,"median":14.13282,"eighty":16.225253,"marketCap":3633288383},{"date":"2025-02-07","current":12.018257,"twenty":11.021479,"median":14.101634,"eighty":16.189242,"marketCap":3378428087},{"date":"2025-02-14","current":12.163317,"twenty":11.021479,"median":14.073671,"eighty":16.170099,"marketCap":3419205734},{"date":"2025-02-21","current":12.109784,"twenty":11.021479,"median":14.021414,"eighty":16.11969,"marketCap":3404157292},{"date":"2025-02-28","current":12.538642,"twenty":11.021479,"median":13.97302,"eighty":16.08076,"marketCap":3524712682},{"date":"2025-03-07","current":12.087978,"twenty":11.021241,"median":13.93922,"eighty":15.987533,"marketCap":3398027357},{"date":"2025-03-14","current":12.269698,"twenty":11.021241,"median":13.923087,"eighty":15.973541,"marketCap":3449110149},{"date":"2025-03-21","current":12.189741,"twenty":11.030709,"median":13.923087,"eighty":15.973541,"marketCap":3426633720},{"date":"2025-03-28","current":12.102516,"twenty":11.03705,"median":13.923087,"eighty":15.973541,"marketCap":3402113980},{"date":"2025-04-04","current":11.637314,"twenty":11.03705,"median":13.923087,"eighty":15.973541,"marketCap":3271342031},{"date":"2025-04-11","current":11.993484,"twenty":11.037249,"median":13.919535,"eighty":15.970298,"marketCap":3371464305},{"date":"2025-04-17","current":12.189741,"twenty":11.037249,"median":13.913614,"eighty":15.970298,"marketCap":3426633720},{"date":"2025-04-25","current":12.262429,"twenty":11.03705,"median":13.913614,"eighty":15.973541,"marketCap":3447066837},{"date":"2025-05-02","current":12.734899,"twenty":11.03705,"median":13.913614,"eighty":15.973541,"marketCap":3579882098},{"date":"2025-05-09","current":13.537646,"twenty":11.03705,"median":13.913614,"eighty":15.973541,"marketCap":3549232422},{"date":"2025-05-16","current":13.576615,"twenty":11.03705,"median":13.913614,"eighty":15.973541,"marketCap":3559448981},{"date":"2025-05-23","current":13.163549,"twenty":11.03705,"median":13.913614,"eighty":15.973541,"marketCap":3451153461},{"date":"2025-05-30","current":13.350598,"twenty":11.03705,"median":13.903056,"eighty":15.973541,"marketCap":3500192942},{"date":"2025-06-06","current":13.085612,"twenty":11.03705,"median":13.869879,"eighty":15.973541,"marketCap":3430720344},{"date":"2025-06-13","current":12.9765,"twenty":11.03705,"median":13.859602,"eighty":15.973541,"marketCap":3402113980},{"date":"2025-06-20","current":12.579022,"twenty":11.03685,"median":13.862512,"eighty":15.976785,"marketCap":3297905083},{"date":"2025-06-27","current":12.758277,"twenty":11.03685,"median":13.862512,"eighty":15.976785,"marketCap":3344901252},{"date":"2025-07-03","current":13.101199,"twenty":11.03685,"median":13.850486,"eighty":15.976785,"marketCap":3434806967},{"date":"2025-07-11","current":12.937532,"twenty":11.03685,"median":13.846204,"eighty":15.976785,"marketCap":3391897422},{"date":"2025-07-18","current":13.241486,"twenty":11.03685,"median":13.846204,"eighty":15.976785,"marketCap":3471586578},{"date":"2025-07-25","current":13.140168,"twenty":11.03685,"median":13.845857,"eighty":15.976785,"marketCap":3445023526},{"date":"2025-08-01","current":13.444122,"twenty":11.03685,"median":13.842758,"eighty":15.976785,"marketCap":3524712682},{"date":"2025-08-08","current":15.472811,"twenty":11.03685,"median":13.845857,"eighty":15.976785,"marketCap":3334684694},{"date":"2025-08-15","current":15.766718,"twenty":11.03685,"median":13.865964,"eighty":15.983374,"marketCap":3398027357},{"date":"2025-08-22","current":15.501253,"twenty":11.03685,"median":13.91112,"eighty":15.983374,"marketCap":3340814629},{"date":"2025-08-29","current":15.56762,"twenty":11.03685,"median":13.933842,"eighty":15.983374,"marketCap":3355117811},{"date":"2025-09-05","current":15.396964,"twenty":11.036651,"median":13.962195,"eighty":15.983409,"marketCap":3318338200},{"date":"2025-09-12","current":15.548658,"twenty":11.03685,"median":14.028672,"eighty":15.983374,"marketCap":3351031188},{"date":"2025-09-19","current":15.25475,"twenty":11.03685,"median":14.099463,"eighty":15.983374,"marketCap":3287688525},{"date":"2025-09-26","current":16.174397,"twenty":11.03685,"median":14.13282,"eighty":16.042996,"marketCap":3485889760},{"date":"2025-10-03","current":16.762212,"twenty":11.03685,"median":14.16848,"eighty":16.083072,"marketCap":3612575085},{"date":"2025-10-10","current":17.748224,"twenty":11.03685,"median":14.221531,"eighty":16.132891,"marketCap":3825079502},{"date":"2025-10-17","current":18.013689,"twenty":11.03685,"median":14.241902,"eighty":16.17441,"marketCap":3882292230},{"date":"2025-10-24","current":18.658389,"twenty":11.03685,"median":14.272386,"eighty":16.194944,"marketCap":4021237425},{"date":"2025-10-31","current":18.430848,"twenty":11.03685,"median":14.299532,"eighty":16.236344,"marketCap":3972197944},{"date":"2025-11-07","current":24.885467,"twenty":11.03685,"median":14.340993,"eighty":16.265032,"marketCap":4213308725},{"date":"2025-11-14","current":24.899292,"twenty":11.03685,"median":14.366256,"eighty":16.281551,"marketCap":4213308725},{"date":"2025-11-21","current":24.730237,"twenty":11.03685,"median":14.389437,"eighty":16.327227,"marketCap":4184702361},{"date":"2025-11-28","current":25.551358,"twenty":11.03685,"median":14.405069,"eighty":16.367814,"marketCap":4323647557},{"date":"2025-12-05","current":23.504495,"twenty":11.03685,"median":14.414556,"eighty":16.396385,"marketCap":3977289696},{"date":"2025-12-12","current":23.721906,"twenty":11.03685,"median":14.440297,"eighty":16.45552,"marketCap":4014078604},{"date":"2025-12-19","current":23.154223,"twenty":11.03685,"median":14.453457,"eighty":16.483821,"marketCap":3918018678},{"date":"2025-12-26","current":23.721906,"twenty":11.03685,"median":14.471355,"eighty":16.519164,"marketCap":4014078604},{"date":"2026-01-02","current":23.576966,"twenty":11.03685,"median":14.497139,"eighty":16.537526,"marketCap":3989552665},{"date":"2026-01-09","current":24.253354,"twenty":11.03685,"median":14.51279,"eighty":16.579113,"marketCap":4104007045},{"date":"2026-01-16","current":24.664018,"twenty":11.03685,"median":14.51279,"eighty":16.624168,"marketCap":4173497204},{"date":"2026-01-23","current":24.965977,"twenty":11.03685,"median":14.51279,"eighty":16.661579,"marketCap":4224592910},{"date":"2026-01-30","current":24.79688,"twenty":11.03685,"median":14.529087,"eighty":16.771702,"marketCap":4195979315},{"date":"2026-02-06","current":21.640534,"twenty":11.03685,"median":14.550732,"eighty":16.861868,"marketCap":4120357671},{"date":"2026-02-13","current":22.338269,"twenty":11.03685,"median":14.583531,"eighty":16.941445,"marketCap":4253206505},{"date":"2026-02-20","current":21.737144,"twenty":11.03685,"median":14.600898,"eighty":17.025607,"marketCap":4138752125},{"date":"2026-02-27","current":21.941673,"twenty":11.03685,"median":14.608517,"eighty":17.07025,"marketCap":4177584861},{"date":"2026-03-06","current":22.821916,"twenty":11.03685,"median":14.608517,"eighty":17.172395,"marketCap":4345178774},{"date":"2026-03-13","current":22.435468,"twenty":11.03685,"median":14.608517,"eighty":17.214861,"marketCap":4271600958},{"date":"2026-03-20","current":21.898734,"twenty":11.03685,"median":14.608517,"eighty":17.236771,"marketCap":4169409548},{"date":"2026-03-27","current":22.145632,"twenty":11.03685,"median":14.608517,"eighty":17.263901,"marketCap":4216417597},{"date":"2026-04-02","current":22.575019,"twenty":11.03685,"median":14.608517,"eighty":17.282888,"marketCap":4298170725},{"date":"2026-04-10","current":23.959792,"twenty":11.03685,"median":14.608517,"eighty":17.382449,"marketCap":4561824564},{"date":"2026-04-17","current":23.589118,"twenty":11.03685,"median":14.608517,"eighty":17.44564,"marketCap":4491250166},{"date":"2026-04-24","current":23.589118,"twenty":11.03685,"median":14.608517,"eighty":17.506022,"marketCap":4491250166},{"date":"2026-05-01","current":24.223466,"twenty":11.03685,"median":14.608517,"eighty":17.539487,"marketCap":4612026720},{"date":"2026-05-08","current":24.312188,"twenty":11.03685,"median":14.608517,"eighty":17.721275,"marketCap":4599744359},{"date":"2026-05-15","current":24.926503,"twenty":11.03685,"median":14.608517,"eighty":17.778775,"marketCap":4717265961},{"date":"2026-05-22","current":24.109241,"twenty":11.03685,"median":14.608517,"eighty":17.866934,"marketCap":4562601503},{"date":"2026-05-29","current":23.788962,"twenty":11.036651,"median":14.606065,"eighty":17.928763,"marketCap":4501989756},{"date":"2026-06-05","current":23.358243,"twenty":11.03685,"median":14.608517,"eighty":18.02558,"marketCap":4420477407},{"date":"2026-06-12","current":23.093185,"twenty":11.03685,"median":14.608517,"eighty":18.114019,"marketCap":4370315961},{"date":"2026-06-18","current":23.071097,"twenty":11.03685,"median":14.608517,"eighty":18.143684,"marketCap":4366135841},{"date":"2026-06-26","current":23.965668,"twenty":11.036651,"median":14.606065,"eighty":18.250779,"marketCap":4535430720},{"date":"2026-07-02","current":22.872303,"twenty":11.036651,"median":14.606065,"eighty":18.277243,"marketCap":4328514757},{"date":"2026-07-10","current":22.949612,"twenty":11.036651,"median":14.606065,"eighty":18.312599,"marketCap":4343145178},{"date":"2026-07-17","current":23.336155,"twenty":11.036651,"median":14.606065,"eighty":18.346979,"marketCap":4416297287},{"date":"2026-07-24","current":23.358243,"twenty":11.036651,"median":14.606065,"eighty":18.392925,"marketCap":4420477407},{"date":"2026-07-31","current":22.055041,"twenty":11.036452,"median":14.605999,"eighty":18.405894,"marketCap":4173850299},{"date":"2026-08-07","current":22.048147,"twenty":11.036452,"median":14.605999,"eighty":18.440329,"marketCap":4338965058},{"date":"2026-08-14","current":21.697197,"twenty":11.036452,"median":14.605999,"eighty":18.474041,"marketCap":4267990462},{"date":"2026-08-21","current":21.718584,"twenty":11.036452,"median":14.605999,"eighty":18.498227,"marketCap":4272197451}],"updateTime":1787553420575},"$inf$@#url:\"https://stock-news.skytigris.cn/v3/notice/important/events/list\",params:#symbol:\"MDU\",pageSize:20,pageCount:8,market:\"us\",,,undefined,":[{"items":[{"cdn_pdf":false,"hasAttachments":true,"id":"10820359","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000056-MDU","pdf_url":null,"pub_time":1605110400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"MDU","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000056/0000067716-20-000056-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/67716/000006771620000056/ex101deferredcompplana.htm","primary":true,"translateUrl":null,"linkName":"ex101deferredcompplana.htm","type":"EX-10.1","id":"NTFILEAzNxX1tdmuJmMaco","market":"us","size":108367},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000056/mdu-20201112.htm","primary":false,"translateUrl":null,"linkName":"mdu-20201112.htm","type":"8-K","id":"NTFILE9EgJJC3CH33rahue","market":"us","size":37574},{"description":"EX-10.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000056/ex102deferredcompplan.htm","primary":false,"translateUrl":null,"linkName":"ex102deferredcompplan.htm","type":"EX-10.2","id":"NTFILEHoe1fqagjRJpWV1k","market":"us","size":145699}],"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":"2020-11-12 00:00","pubTimestamp":1605110400,"title_zh":"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":"10740128","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000053-MDU","pdf_url":null,"pub_time":1604505600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-Q  - Quarterly report [Sections 13 or 15(d)]","symbol":"MDU","title":"10-Q  - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000053/0000067716-20-000053-index.htm","us_notice_code":"Form 10-Q","us_title_en":"10-Q  - Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":true,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"MDU RESOURCES FORM 10-Q 9-30-2020","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000053/mdu-20200930.htm","primary":true,"translateUrl":null,"linkName":"mdu-20200930.htm","type":"10-Q","id":"NTFILE8dTte9wQbavfwC8j","market":"us","size":3198782},{"description":"MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000053/a2020q3ex31a.htm","primary":false,"translateUrl":null,"linkName":"a2020q3ex31a.htm","type":"EX-31.A","id":"NTFILE3UcAATZDM771VDFK","market":"us","size":9316},{"description":"MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000053/a2020q3ex31b.htm","primary":false,"translateUrl":null,"linkName":"a2020q3ex31b.htm","type":"EX-31.B","id":"NTFILEFgMkQKoxHGVmrAzC","market":"us","size":8940},{"description":"MDU RESOURCES CERTIFICATION OF CEO AND CFO","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000053/a2020q3ex32.htm","primary":false,"translateUrl":null,"linkName":"a2020q3ex32.htm","type":"EX-32","id":"NTFILE8HofZtBJc1ASPagw","market":"us","size":5476},{"description":"MDU RESOURCES MINE SAFETY DISCLOSURES","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000053/a2020q3ex95.htm","primary":false,"translateUrl":null,"linkName":"a2020q3ex95.htm","type":"EX-95","id":"NTFILE3qvTLBHyDUfL8G8D","market":"us","size":143438}],"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":[{"id":48870,"name":"Consolidated Statements of Income","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000053/R2.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":48871,"name":"Consolidated Statements of Comprehensive Income","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000053/R3.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":48872,"name":"Consolidated Balance Sheets","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000053/R4.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":48873,"name":"Consolidated Statements of Equity","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000053/R5.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":48874,"name":"Consolidated Statements of Cash Flows","name_zh":"合并现金流量表","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000053/R6.htm","cdn_url":"https://static.tigerbbs.com/73dd72a320eb1be259fef2067ec5d353","translation_url":"https://static.tigerbbs.com/d946f7a76d906f1dd9282dc87a60d3b6","translate_status":1}],"event_type":"important_notice","event_name":"Quarterly Report","pubTime":"2020-11-05 00:00","pubTimestamp":1604505600,"title_zh":"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":"10725301","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000051-MDU","pdf_url":null,"pub_time":1604419200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"MDU","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000051/0000067716-20-000051-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 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"MDU RESOURCES GROUP, INC. EX 99","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000051/a2020q3ex99.htm","primary":true,"translateUrl":null,"linkName":"a2020q3ex99.htm","type":"EX-99","id":"NTFILEAVNE5vwd6HGLurqx","market":"us","size":476394},{"description":"MDU RESOURCES GROUP, INC. FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000051/mdu-20201104.htm","primary":false,"translateUrl":null,"linkName":"mdu-20201104.htm","type":"8-K","id":"NTFILE5hqbSvfUYR228ik9","market":"us","size":32421},{"description":"MDU RESOURCES GROUP, INC. LOGO","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000051/mdurirpressreleasebasa181a.jpg","primary":false,"translateUrl":null,"linkName":"mdurirpressreleasebasa181a.jpg","type":"GRAPHIC","id":"NTFILE8JUR6AuPWvF6yrAH","market":"us","size":748436}],"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":"2020-11-04 00:00","pubTimestamp":1604419200,"title_zh":"8-K  - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"10439970","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000047-MDU","pdf_url":null,"pub_time":1602086400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"MDU","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000047/0000067716-20-000047-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 1.04: Mine Safety - Reporting of Shutdowns and Patterns of Violations;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000047/mdu-20200916.xsd","primary":true,"translateUrl":null,"linkName":"mdu-20200916.xsd","type":"EX-101.SCH","id":"NTFILE5QQAvNX1X1YqhdGD","market":"us","size":4424},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000047/a2020form8-k104krcidaho.htm","primary":false,"translateUrl":null,"linkName":"a2020form8-k104krcidaho.htm","type":"8-K","id":"NTFILE9QLQaQevNPeCKHVU","market":"us","size":42551},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000047/mdu-20200916_cal.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200916_cal.xml","type":"EX-101.CAL","id":"NTFILEuKoNEsTZVtG9RHHw","market":"us","size":609},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000047/mdu-20200916_def.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200916_def.xml","type":"EX-101.DEF","id":"NTFILE7QDsTwuUziuJuQPL","market":"us","size":14527},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000047/mdu-20200916_lab.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200916_lab.xml","type":"EX-101.LAB","id":"NTFILECBKNofofiHPUeJPK","market":"us","size":31386},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000047/mdu-20200916_pre.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200916_pre.xml","type":"EX-101.PRE","id":"NTFILE414CPmNxoNEdpXyx","market":"us","size":16430},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000047/a2020form8-k104krcidaho_htm.xml","primary":false,"translateUrl":null,"linkName":"a2020form8-k104krcidaho_htm.xml","type":"XML","id":"NTFILEG3rsqzv5amz1bboS","market":"us","size":4539}],"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":"2020-10-08 00:00","pubTimestamp":1602086400,"title_zh":"8-K  - Current report","summary_en":"Item 1.04: Mine Safety - Reporting of Shutdowns and Patterns of Violations;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"10231821","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000044-MDU","pdf_url":null,"pub_time":1596643200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-Q  - Quarterly report [Sections 13 or 15(d)]","symbol":"MDU","title":"10-Q  - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/0000067716-20-000044-index.htm","us_notice_code":"Form 10-Q","us_title_en":"10-Q  - Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"MDU RESOURCES FORM 10-Q 06-30-2020","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630.htm","primary":true,"translateUrl":null,"linkName":"mdu-20200630.htm","type":"10-Q","id":"NTFILE4QB6q8AockXzwaxm","market":"us","size":3893562},{"description":"MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/a2020q2ex31a.htm","primary":false,"translateUrl":null,"linkName":"a2020q2ex31a.htm","type":"EX-31.A","id":"NTFILEEFRLnngrgVx9j9rh","market":"us","size":10571},{"description":"MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/a2020q2ex31b.htm","primary":false,"translateUrl":null,"linkName":"a2020q2ex31b.htm","type":"EX-31.B","id":"NTFILEHUj3EsD5oYQ1cR7N","market":"us","size":10154},{"description":"MDU RESOURCES CERTIFICATION OF CEO AND CFO","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/a2020q2ex32.htm","primary":false,"translateUrl":null,"linkName":"a2020q2ex32.htm","type":"EX-32","id":"NTFILEGazMsw1RcuRZTgFb","market":"us","size":6224},{"description":"MDU RESOURCES MINE SAFETY DISCLOSURES","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/a2020q2ex95.htm","primary":false,"translateUrl":null,"linkName":"a2020q2ex95.htm","type":"EX-95","id":"NTFILE2j7h1a33VevZ3ABb","market":"us","size":186864},{"description":"XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630.xsd","primary":false,"translateUrl":null,"linkName":"mdu-20200630.xsd","type":"EX-101.SCH","id":"NTFILEARXkG85KYcAeMvBu","market":"us","size":53687},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630_cal.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200630_cal.xml","type":"EX-101.CAL","id":"NTFILEEgBfkNMTenzQkehb","market":"us","size":100599},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630_def.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200630_def.xml","type":"EX-101.DEF","id":"NTFILECxcPyogsTsdN7Uzp","market":"us","size":413795},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630_lab.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200630_lab.xml","type":"EX-101.LAB","id":"NTFILEBgnmHBnRMbRbvu5B","market":"us","size":726716},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630_pre.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200630_pre.xml","type":"EX-101.PRE","id":"NTFILE1QZ9CvHJtXdJ2NNj","market":"us","size":500519},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630_htm.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200630_htm.xml","type":"XML","id":"NTFILECjxGpBKGQHtfm2iH","market":"us","size":3973077}],"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":"2020-08-06 00:00","pubTimestamp":1596643200,"title_zh":"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":"10231820","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000044-MDU","pdf_url":null,"pub_time":1596643200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-Q  - Quarterly report [Sections 13 or 15(d)]","symbol":"MDU","title":"10-Q  - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/0000067716-20-000044-index.htm","us_notice_code":"Form 10-Q","us_title_en":"10-Q  - Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":true,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"MDU RESOURCES FORM 10-Q 06-30-2020","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630.htm","primary":true,"translateUrl":null,"linkName":"mdu-20200630.htm","type":"10-Q","id":"NTFILE4QB6q8AockXzwaxm","market":"us","size":3893562},{"description":"MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/a2020q2ex31a.htm","primary":false,"translateUrl":null,"linkName":"a2020q2ex31a.htm","type":"EX-31.A","id":"NTFILEEFRLnngrgVx9j9rh","market":"us","size":10571},{"description":"MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/a2020q2ex31b.htm","primary":false,"translateUrl":null,"linkName":"a2020q2ex31b.htm","type":"EX-31.B","id":"NTFILEHUj3EsD5oYQ1cR7N","market":"us","size":10154},{"description":"MDU RESOURCES CERTIFICATION OF CEO AND CFO","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/a2020q2ex32.htm","primary":false,"translateUrl":null,"linkName":"a2020q2ex32.htm","type":"EX-32","id":"NTFILEGazMsw1RcuRZTgFb","market":"us","size":6224},{"description":"MDU RESOURCES MINE SAFETY DISCLOSURES","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/a2020q2ex95.htm","primary":false,"translateUrl":null,"linkName":"a2020q2ex95.htm","type":"EX-95","id":"NTFILE2j7h1a33VevZ3ABb","market":"us","size":186864},{"description":"XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630.xsd","primary":false,"translateUrl":null,"linkName":"mdu-20200630.xsd","type":"EX-101.SCH","id":"NTFILEARXkG85KYcAeMvBu","market":"us","size":53687},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630_cal.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200630_cal.xml","type":"EX-101.CAL","id":"NTFILEEgBfkNMTenzQkehb","market":"us","size":100599},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630_def.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200630_def.xml","type":"EX-101.DEF","id":"NTFILECxcPyogsTsdN7Uzp","market":"us","size":413795},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630_lab.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200630_lab.xml","type":"EX-101.LAB","id":"NTFILEBgnmHBnRMbRbvu5B","market":"us","size":726716},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630_pre.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200630_pre.xml","type":"EX-101.PRE","id":"NTFILE1QZ9CvHJtXdJ2NNj","market":"us","size":500519},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/mdu-20200630_htm.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200630_htm.xml","type":"XML","id":"NTFILECjxGpBKGQHtfm2iH","market":"us","size":3973077}],"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":[{"id":22033,"name":"Consolidated Statements of Income","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/R2.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":22034,"name":"Consolidated Statements of Comprehensive Income","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/R3.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":22035,"name":"Consolidated Balance Sheets","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/R4.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":22036,"name":"Consolidated Statements of Equity","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/R5.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":22037,"name":"Consolidated Statements of Cash Flows","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/R6.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":22038,"name":"Consolidated Statements of Income","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/R2.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":22039,"name":"Consolidated Statements of Comprehensive Income","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/R3.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":22040,"name":"Consolidated Balance Sheets","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/R4.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":22041,"name":"Consolidated Statements of Equity","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/R5.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":22042,"name":"Consolidated Statements of Cash Flows","name_zh":"合并现金流量表","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000044/R6.htm","cdn_url":"https://static.tigerbbs.com/4755bb0ad640cf9259b990bb4af027b1","translation_url":"https://static.tigerbbs.com/a525b937d125a28553d44215eba5bcba","translate_status":1}],"event_type":"important_notice","event_name":"Quarterly Report","pubTime":"2020-08-06 00:00","pubTimestamp":1596643200,"title_zh":"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":"10222137","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000041-MDU","pdf_url":null,"pub_time":1596470400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"MDU","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000041/0000067716-20-000041-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 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"MDU RESOURCES GROUP, INC. EX 99","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000041/a2020q2ex99.htm","primary":true,"translateUrl":null,"linkName":"a2020q2ex99.htm","type":"EX-99","id":"NTFILE5CN8ba6YQBuFdTH9","market":"us","size":853583},{"description":"MDU RESOURCES GROUP, INC. FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000041/mdu-20200804.htm","primary":false,"translateUrl":null,"linkName":"mdu-20200804.htm","type":"8-K","id":"NTFILECU7y9W9Lcs8AHZ7E","market":"us","size":38439},{"description":"XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000041/mdu-20200804.xsd","primary":false,"translateUrl":null,"linkName":"mdu-20200804.xsd","type":"EX-101.SCH","id":"NTFILEAEzbq9jsZ8guzY3h","market":"us","size":2416},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000041/mdu-20200804_cal.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200804_cal.xml","type":"EX-101.CAL","id":"NTFILE6A1yDom4t7dED7pr","market":"us","size":711},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000041/mdu-20200804_def.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200804_def.xml","type":"EX-101.DEF","id":"NTFILEHZdKzyNTuosRG2ud","market":"us","size":14946},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000041/mdu-20200804_lab.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200804_lab.xml","type":"EX-101.LAB","id":"NTFILEFp59Ju7amvoxDN8Q","market":"us","size":29024},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000041/mdu-20200804_pre.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200804_pre.xml","type":"EX-101.PRE","id":"NTFILE2w8ipBHPeaDeeAZx","market":"us","size":15562},{"description":"MDU RESOURCES GROUP, INC. LOGO","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000041/mdurirpressreleasebasa.jpg","primary":false,"translateUrl":null,"linkName":"mdurirpressreleasebasa.jpg","type":"GRAPHIC","id":"NTFILE2BvYZqxGzp6S3LmR","market":"us","size":748436},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000041/mdu-20200804_htm.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200804_htm.xml","type":"XML","id":"NTFILEYp8yWTFm4r8B43gh","market":"us","size":11192}],"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":"2020-08-04 00:00","pubTimestamp":1596470400,"title_zh":"8-K  - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9868033","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000036-MDU","pdf_url":null,"pub_time":1591891200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"11-K  - Annual report of employee stock purchase, savings and similar plans","symbol":"MDU","title":"11-K  - Annual report of employee stock purchase, savings and similar plans","titleType":"Employee Stock Ownership","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000036/0000067716-20-000036-index.htm","us_notice_code":"Form 11-K","us_title_en":"11-K  - Annual report of employee stock purchase, savings and similar plans","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"MDU RESOURCES FORM 11-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000036/a2019form11-k.htm","primary":true,"translateUrl":null,"linkName":"a2019form11-k.htm","type":"11-K","id":"NTFILE8AsAuzJQhXj7zoQ1","market":"us","size":274457},{"description":"CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000036/a2019form11-kex23.htm","primary":false,"translateUrl":null,"linkName":"a2019form11-kex23.htm","type":"EX-23","id":"NTFILE2DEzyzTAV3bU41i2","market":"us","size":2669}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Employee Stock Ownership","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Employee Stock Ownership","pubTime":"2020-06-12 00:00","pubTimestamp":1591891200,"title_zh":"11-K  - Annual report of employee stock purchase, savings and similar plans","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9753284","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000030-MDU","pdf_url":null,"pub_time":1589299200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"MDU","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000030/0000067716-20-000030-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.07: Submission of Matters to a Vote of Security Holders","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000030/mdu-20200512.xsd","primary":true,"translateUrl":null,"linkName":"mdu-20200512.xsd","type":"EX-101.SCH","id":"NTFILE3oPMi4tRV1p68mNr","market":"us","size":4424},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000030/a20208-kstockholdersvo.htm","primary":false,"translateUrl":null,"linkName":"a20208-kstockholdersvo.htm","type":"8-K","id":"NTFILEGbJqGRjGSJXziAeP","market":"us","size":66031},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000030/mdu-20200512_cal.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200512_cal.xml","type":"EX-101.CAL","id":"NTFILEB4Ss4Fxz7YiKSBoo","market":"us","size":609},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000030/mdu-20200512_def.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200512_def.xml","type":"EX-101.DEF","id":"NTFILE9TBk4GHgQ41Uwt6S","market":"us","size":14527},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000030/mdu-20200512_lab.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200512_lab.xml","type":"EX-101.LAB","id":"NTFILEhtMUPMYcQxkadSD4","market":"us","size":31386},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000030/mdu-20200512_pre.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200512_pre.xml","type":"EX-101.PRE","id":"NTFILEFf3RrmZi9pqERrQY","market":"us","size":16430},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000030/a20208-kstockholdersvo_htm.xml","primary":false,"translateUrl":null,"linkName":"a20208-kstockholdersvo_htm.xml","type":"XML","id":"NTFILE2X953yRUtLdKdmX4","market":"us","size":4467}],"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":"2020-05-13 00:00","pubTimestamp":1589299200,"title_zh":"8-K  - Current report","summary_en":"Item 5.07: Submission of Matters to a Vote of Security Holders","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9695274","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000027-MDU","pdf_url":null,"pub_time":1588867200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Quarterly report [Sections 13 or 15(d)]","symbol":"MDU","title":"Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/0000067716-20-000027-index.htm","us_notice_code":"Form 10-Q","us_title_en":null,"is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"MDU RESOURCES FORM 10-Q 3-31-2020","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/a2020q1form10-q.htm","primary":true,"translateUrl":null,"linkName":"a2020q1form10-q.htm","type":"10-Q","id":"NTFILEBUz3RuZCaGmUyaw3","market":"us","size":2275522},{"description":"MDU RESOURCES 401 K RETIREMENT PLAN RESTATED 4-1-2020","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/a2020q1ex10a.htm","primary":false,"translateUrl":null,"linkName":"a2020q1ex10a.htm","type":"EX-10.A","id":"NTFILE2dUHL6i4io647yHf","market":"us","size":610369},{"description":"MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/a2020q1ex31a.htm","primary":false,"translateUrl":null,"linkName":"a2020q1ex31a.htm","type":"EX-31.A","id":"NTFILE9wnQuUSZfEpn8ZHL","market":"us","size":9825},{"description":"MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/a2020q1ex31b.htm","primary":false,"translateUrl":null,"linkName":"a2020q1ex31b.htm","type":"EX-31.B","id":"NTFILE4rRTYjozwnKTGLWx","market":"us","size":9256},{"description":"MDU RESOURCES CERTIFICATION OF CEO AND CFO","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/a2020q1ex32.htm","primary":false,"translateUrl":null,"linkName":"a2020q1ex32.htm","type":"EX-32","id":"NTFILEi5bUTomBinymLnSr","market":"us","size":6882},{"description":"MDU RESOURCES MINE SAFETY DISCLOSURES","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/a2020q1ex95.htm","primary":false,"translateUrl":null,"linkName":"a2020q1ex95.htm","type":"EX-95","id":"NTFILEBrqKS84HKQfN17ZS","market":"us","size":93211},{"description":"XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/mdu-20200331.xsd","primary":false,"translateUrl":null,"linkName":"mdu-20200331.xsd","type":"EX-101.SCH","id":"NTFILE2naZQwAoGaQ3cQMH","market":"us","size":55587},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/mdu-20200331_cal.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200331_cal.xml","type":"EX-101.CAL","id":"NTFILE3XqpJZBk18hHNWH2","market":"us","size":93618},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/mdu-20200331_def.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200331_def.xml","type":"EX-101.DEF","id":"NTFILE7hzcSrKTFHvWTfq1","market":"us","size":392852},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/mdu-20200331_lab.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200331_lab.xml","type":"EX-101.LAB","id":"NTFILEE2s6gR131khf6m5w","market":"us","size":805334},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/mdu-20200331_pre.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200331_pre.xml","type":"EX-101.PRE","id":"NTFILE37P9UJkJDwti87P8","market":"us","size":489735},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":38,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000027/a2020q1form10-q_htm.xml","primary":false,"translateUrl":null,"linkName":"a2020q1form10-q_htm.xml","type":"XML","id":"NTFILEG1ySB2TpF2M4oLVT","market":"us","size":2427427}],"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":"2020-05-08 00:00","pubTimestamp":1588867200,"title_zh":"Quarterly report [Sections 13 or 15(d","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9691288","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000025-MDU","pdf_url":null,"pub_time":1588780800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 2.02, 7.01, and 9.01","symbol":"MDU","title":"Current report, items 2.02, 7.01, and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000025/0000067716-20-000025-index.htm","us_notice_code":"Form 8-K","us_title_en":null,"is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"MDU RESOURCES GROUP, INC. EX 99","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000025/a2020q1ex99.htm","primary":true,"translateUrl":null,"linkName":"a2020q1ex99.htm","type":"EX-99","id":"NTFILE4gVt6i8BjvwMZNdp","market":"us","size":426859},{"description":"MDU RESOURCES GROUP, INC. FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000025/a2020q1form8-k.htm","primary":false,"translateUrl":null,"linkName":"a2020q1form8-k.htm","type":"8-K","id":"NTFILEE4cUv4jt7fzkx6cP","market":"us","size":38797},{"description":"XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000025/mdu-20200507.xsd","primary":false,"translateUrl":null,"linkName":"mdu-20200507.xsd","type":"EX-101.SCH","id":"NTFILECowH5gkQ1iGsS4af","market":"us","size":4424},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000025/mdu-20200507_cal.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200507_cal.xml","type":"EX-101.CAL","id":"NTFILE6B7pofKzFWMb8FGe","market":"us","size":609},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000025/mdu-20200507_def.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200507_def.xml","type":"EX-101.DEF","id":"NTFILE3uhJyrdsxZyw9c6U","market":"us","size":14527},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000025/mdu-20200507_lab.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200507_lab.xml","type":"EX-101.LAB","id":"NTFILE2EKr8tuL4r855SrG","market":"us","size":31386},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000025/mdu-20200507_pre.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200507_pre.xml","type":"EX-101.PRE","id":"NTFILEDAA7i97DQHCQrdUU","market":"us","size":16430},{"description":"MDU RESOURCES GROUP, INC. LOGO","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000025/mdurirpressreleasebasa12.jpg","primary":false,"translateUrl":null,"linkName":"mdurirpressreleasebasa12.jpg","type":"GRAPHIC","id":"NTFILE6utJ9NZzda9V97j9","market":"us","size":748436},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000025/a2020q1form8-k_htm.xml","primary":false,"translateUrl":null,"linkName":"a2020q1form8-k_htm.xml","type":"XML","id":"NTFILE7GMfJjc3grq6XBHm","market":"us","size":4464}],"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":"2020-05-07 00:00","pubTimestamp":1588780800,"title_zh":"Current report, items 2.02, 7.01, and 9.01","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9120619","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000010-MDU","pdf_url":null,"pub_time":1582214400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Annual report [Section 13 and 15(d), not S-K Item 405]","symbol":"MDU","title":"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/67716/000006771620000010/0000067716-20-000010-index.htm","us_notice_code":"Form 10-K","us_title_en":"Annual report [Section 13 and 15(d), not S-K Item 405]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"10-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019form10-k.htm","primary":true,"translateUrl":null,"linkName":"a2019form10-k.htm","type":"10-K","id":"NTFILE3QWmp7cTtPniw8ec","market":"us","size":6061047},{"description":"MDU RESOURCES CEHI FIFTH AMENDED AND RESTATED CREDIT AGREEMENT 12-19-2019","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex4c.htm","primary":false,"translateUrl":null,"linkName":"a2019ex4c.htm","type":"EX-4.C","id":"NTFILE8o1YZYwyVdzcfKhk","market":"us","size":871800},{"description":"MDU RESOURCES MDU AMENDED AND RESTATED CREDIT AGREEMENT 12-19-2019","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex4d.htm","primary":false,"translateUrl":null,"linkName":"a2019ex4d.htm","type":"EX-4.D","id":"NTFILE84WtRtewvYQRoge4","market":"us","size":810398},{"description":"MDU RESOURCES DESCRIPTION OF SECURITIES","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex4g.htm","primary":false,"translateUrl":null,"linkName":"a2019ex4g.htm","type":"EX-4.G","id":"NTFILEDgQhY2fN9TFnhTfB","market":"us","size":26090},{"description":"MDU RESOURCES EXECUTIVE INCENTIVE COMPENSATION PLAN AMENDED 11-13-2019","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex10g.htm","primary":false,"translateUrl":null,"linkName":"a2019ex10g.htm","type":"EX-10.G","id":"NTFILEF9DHDu7ueDJbEMqp","market":"us","size":76111},{"description":"MDU RESOURCES LONG-TERM PERFORMANCE INCENTIVE PLAN","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex10k.htm","primary":false,"translateUrl":null,"linkName":"a2019ex10k.htm","type":"EX-10.K","id":"NTFILE3cPRAyXNUgnsrMR6","market":"us","size":71226},{"description":"MDU RESOURCES 401 K RETIREMENT PLAN AMENDMENT 10-15-2019","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex10y.htm","primary":false,"translateUrl":null,"linkName":"a2019ex10y.htm","type":"EX-10.Y","id":"NTFILEBQXG24nYf1XftXCy","market":"us","size":11794},{"description":"MDU RESOURCES SUBSIDIARIES OF MDU RESOURCES","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex21.htm","primary":false,"translateUrl":null,"linkName":"a2019ex21.htm","type":"EX-21","id":"NTFILEFMiw3pevqufafiJ7","market":"us","size":62249},{"description":"MDU RESOURCES CONSENT OF INDEPENDENT ACCOUNTING FIRM","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex23.htm","primary":false,"translateUrl":null,"linkName":"a2019ex23.htm","type":"EX-23","id":"NTFILED1ENLt8PEdF4wnm2","market":"us","size":2799},{"description":"MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex31a.htm","primary":false,"translateUrl":null,"linkName":"a2019ex31a.htm","type":"EX-31.A","id":"NTFILECVzz775YFAP4kjbU","market":"us","size":10459},{"description":"MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex31b.htm","primary":false,"translateUrl":null,"linkName":"a2019ex31b.htm","type":"EX-31.B","id":"NTFILEFtYpGrPvFtX6GQnd","market":"us","size":10449},{"description":"MDU RESOURCES CERTIFICATION OF CEO AND CFO","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex32.htm","primary":false,"translateUrl":null,"linkName":"a2019ex32.htm","type":"EX-32","id":"NTFILEisL9szqDWkATsc3t","market":"us","size":6955},{"description":"MDU RESOURCES MINE SAFETY DISCLOSURES","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019ex95.htm","primary":false,"translateUrl":null,"linkName":"a2019ex95.htm","type":"EX-95","id":"NTFILECbAbB4HpL2thTtuF","market":"us","size":238838},{"description":"XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/mdu-20191231.xsd","primary":false,"translateUrl":null,"linkName":"mdu-20191231.xsd","type":"EX-101.SCH","id":"NTFILE8ZT1t3BVdpaQv7JS","market":"us","size":118830},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/mdu-20191231_cal.xml","primary":false,"translateUrl":null,"linkName":"mdu-20191231_cal.xml","type":"EX-101.CAL","id":"NTFILEFjMWMgEQK7iPV5b7","market":"us","size":155933},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/mdu-20191231_def.xml","primary":false,"translateUrl":null,"linkName":"mdu-20191231_def.xml","type":"EX-101.DEF","id":"NTFILE8Pedf6NEKMs8QHbW","market":"us","size":988266},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT","seq":17,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/mdu-20191231_lab.xml","primary":false,"translateUrl":null,"linkName":"mdu-20191231_lab.xml","type":"EX-101.LAB","id":"NTFILEgCMayACjT9H8N57k","market":"us","size":1730907},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT","seq":18,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/mdu-20191231_pre.xml","primary":false,"translateUrl":null,"linkName":"mdu-20191231_pre.xml","type":"EX-101.PRE","id":"NTFILEz5ryp2s4htAQpKn8","market":"us","size":1185976},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":130,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000010/a2019form10-k_htm.xml","primary":false,"translateUrl":null,"linkName":"a2019form10-k_htm.xml","type":"XML","id":"NTFILE5D8vXM2Tf7PKuX58","market":"us","size":5937379}],"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":"2020-02-21 00:00","pubTimestamp":1582214400,"title_zh":"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":"9094171","market":"us","labels":[],"media":"sec.gov","original_id":"AN9375120000512-MDU","pdf_url":null,"pub_time":1581609600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Statement of acquisition of beneficial ownership by individuals","symbol":"MDU","title":"Statement of acquisition of beneficial ownership by individuals","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000009375120000512/0000093751-20-000512-index.htm","us_notice_code":"Form SC 13G","us_title_en":"Statement of acquisition of beneficial ownership by individuals","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000009375120000512/MDUResourcesGroupInc.txt","primary":true,"translateUrl":null,"linkName":"MDUResourcesGroupInc.txt","type":"SC 13G","id":"NTFILEQTXGgSg5AfNUAtP7","market":"us","size":6935}],"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":"2020-02-14 00:00","pubTimestamp":1581609600,"title_zh":"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":"9080096","market":"us","labels":[],"media":"sec.gov","original_id":"AN110465920017273-MDU","pdf_url":null,"pub_time":1581436800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"[Amend] Statement of acquisition of beneficial ownership by individuals","symbol":"MDU","title":"[Amend] Statement of acquisition of beneficial ownership by individuals","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000110465920017273/0001104659-20-017273-index.htm","us_notice_code":"Form SC 13G/A","us_title_en":"[Amend] Statement of acquisition of beneficial ownership by individuals","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"SCHEDULE 13G/A","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000110465920017273/tv0766-mduresourcesgroupinc.htm","primary":true,"translateUrl":null,"linkName":"tv0766-mduresourcesgroupinc.htm","type":"SC 13G/A","id":"NTFILEFWpdv6bwY2xhJTcq","market":"us","size":12188}],"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":"2020-02-12 00:00","pubTimestamp":1581436800,"title_zh":"Amend] 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":"9051981","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771620000006-MDU","pdf_url":null,"pub_time":1580745600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 2.02, 7.01, and 9.01","symbol":"MDU","title":"Current report, items 2.02, 7.01, and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000006/0000067716-20-000006-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, items 2.02, 7.01, and 9.01","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"MDU RESOURCES GROUP, INC. FORM 8-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000006/a2019form8-kearningsre.htm","primary":true,"translateUrl":null,"linkName":"a2019form8-kearningsre.htm","type":"8-K","id":"NTFILEDmF6rnJwEJ9pRdd9","market":"us","size":38907},{"description":"MDU RESOURCES GROUP, INC. EX 99","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000006/a2019earningsreleaseex.htm","primary":false,"translateUrl":null,"linkName":"a2019earningsreleaseex.htm","type":"EX-99","id":"NTFILED195VMn2DmyDXjUF","market":"us","size":563078},{"description":"XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000006/mdu-20200204.xsd","primary":false,"translateUrl":null,"linkName":"mdu-20200204.xsd","type":"EX-101.SCH","id":"NTFILE54tdQ7YupcxMycen","market":"us","size":4562},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000006/mdu-20200204_cal.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200204_cal.xml","type":"EX-101.CAL","id":"NTFILEBCizjxvifvaKwKUN","market":"us","size":609},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000006/mdu-20200204_def.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200204_def.xml","type":"EX-101.DEF","id":"NTFILEG6riKdsKDKev8uRV","market":"us","size":14527},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000006/mdu-20200204_lab.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200204_lab.xml","type":"EX-101.LAB","id":"NTFILEE3ForSew8159kgPK","market":"us","size":31381},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000006/mdu-20200204_pre.xml","primary":false,"translateUrl":null,"linkName":"mdu-20200204_pre.xml","type":"EX-101.PRE","id":"NTFILEBip8cUt75vSvKbjx","market":"us","size":16430},{"description":"MDU RESOURCES GROUP, INC. LOGO","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000006/mdurirpressreleasebasa16.jpg","primary":false,"translateUrl":null,"linkName":"mdurirpressreleasebasa16.jpg","type":"GRAPHIC","id":"NTFILEE5zBt74gQHjxnQva","market":"us","size":748436},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771620000006/a2019form8-kearningsre_htm.xml","primary":false,"translateUrl":null,"linkName":"a2019form8-kearningsre_htm.xml","type":"XML","id":"NTFILE8EEC3giyJSqGzfAw","market":"us","size":4488}],"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":"2020-02-04 00:00","pubTimestamp":1580745600,"title_zh":"Current report, items 2.02, 7.01, and 9.01","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9050063","market":"us","labels":[],"media":"sec.gov","original_id":"AN83423720002210-MDU","pdf_url":null,"pub_time":1580745600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"[Amend] Statement of acquisition of beneficial ownership by individuals","symbol":"MDU","title":"[Amend] Statement of acquisition of beneficial ownership by individuals","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000083423720002210/0000834237-20-002210-index.htm","us_notice_code":"Form SC 13G/A","us_title_en":"[Amend] Statement of acquisition of beneficial ownership by individuals","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000083423720002210/us5526901096_020320.txt","primary":true,"translateUrl":null,"linkName":"us5526901096_020320.txt","type":"SC 13G/A","id":"NTFILEDWUQfHc75AirMY69","market":"us","size":11768}],"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":"2020-02-04 00:00","pubTimestamp":1580745600,"title_zh":"Amend] 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":"8826512","market":"us","labels":[],"media":"sec.gov","original_id":"AN6771619000086-MDU","pdf_url":null,"pub_time":1575820800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 7.01 and 9.01","symbol":"MDU","title":"Current report, items 7.01 and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000006771619000086/0000067716-19-000086-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, items 7.01 and 9.01","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"MDU RESOURCES EX 99 EARNINGS GUIDANCE","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771619000086/a2019ex99-earningsguid.htm","primary":true,"translateUrl":null,"linkName":"a2019ex99-earningsguid.htm","type":"EX-99","id":"NTFILE9A13TUaw5eFW63de","market":"us","size":7611},{"description":"MDU RESOURCES FORM 8-K EARNINGS GUIDANCE","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771619000086/a2019form8-kearningsgu.htm","primary":false,"translateUrl":null,"linkName":"a2019form8-kearningsgu.htm","type":"8-K","id":"NTFILEBiG98Ze3DyGKaV2s","market":"us","size":40845},{"description":"XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771619000086/mdu-20191209.xsd","primary":false,"translateUrl":null,"linkName":"mdu-20191209.xsd","type":"EX-101.SCH","id":"NTFILE6mPuPriBtH2frVDn","market":"us","size":4562},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771619000086/mdu-20191209_cal.xml","primary":false,"translateUrl":null,"linkName":"mdu-20191209_cal.xml","type":"EX-101.CAL","id":"NTFILE2nCbWcGF425Jqspy","market":"us","size":609},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771619000086/mdu-20191209_def.xml","primary":false,"translateUrl":null,"linkName":"mdu-20191209_def.xml","type":"EX-101.DEF","id":"NTFILEGkKyxT8Q84UULg2W","market":"us","size":14577},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771619000086/mdu-20191209_lab.xml","primary":false,"translateUrl":null,"linkName":"mdu-20191209_lab.xml","type":"EX-101.LAB","id":"NTFILE8E8AV3ec5mao7Sur","market":"us","size":31381},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771619000086/mdu-20191209_pre.xml","primary":false,"translateUrl":null,"linkName":"mdu-20191209_pre.xml","type":"EX-101.PRE","id":"NTFILEEChkzqh9oM7uVRr2","market":"us","size":16430},{"description":"","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771619000086/mdurirpressreleasebasa07.jpg","primary":false,"translateUrl":null,"linkName":"mdurirpressreleasebasa07.jpg","type":"GRAPHIC","id":"NTFILE3NnHMk3TvP2qtYDR","market":"us","size":748436},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000006771619000086/a2019form8-kearningsgu_htm.xml","primary":false,"translateUrl":null,"linkName":"a2019form8-kearningsgu_htm.xml","type":"XML","id":"NTFILEhSYori7T6FvH543W","market":"us","size":4392}],"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":"2019-12-09 00:00","pubTimestamp":1575820800,"title_zh":"Current report, items 7.01 and 9.01","summary_en":"Item 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8775335","market":"us","labels":[],"media":"sec.gov","original_id":"AN122520819014711-MDU","pdf_url":null,"pub_time":1574179200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Statement of changes in beneficial ownership of securities","symbol":"MDU","title":"Statement of changes in beneficial ownership of securities","titleType":"Statement Of Changes In Beneficial Ownership","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000122520819014711/0001225208-19-014711-index.htm","us_notice_code":"Form 4","us_title_en":"Statement of changes in beneficial ownership 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/67716/000122520819014711/xslF345X03/doc4.xml","primary":true,"translateUrl":null,"linkName":"doc4.html","type":"4","id":"NTFILECj4fP2mg1Zcb62Em","market":"us","size":0},{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000122520819014711/doc4.xml","primary":false,"translateUrl":null,"linkName":"doc4.xml","type":"4","id":"NTFILE8RBqwcaEKifsMh6J","market":"us","size":4871}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Statement Of Changes In Beneficial Ownership","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Statement Of Changes In Beneficial Ownership","pubTime":"2019-11-20 00:00","pubTimestamp":1574179200,"title_zh":"Statement of changes in beneficial ownership of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8775334","market":"us","labels":[],"media":"sec.gov","original_id":"AN122520819014719-MDU","pdf_url":null,"pub_time":1574179200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Statement of changes in beneficial ownership of securities","symbol":"MDU","title":"Statement of changes in beneficial ownership of securities","titleType":"Statement Of Changes In Beneficial Ownership","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000122520819014719/0001225208-19-014719-index.htm","us_notice_code":"Form 4","us_title_en":"Statement of changes in beneficial ownership 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/67716/000122520819014719/xslF345X03/doc4.xml","primary":true,"translateUrl":null,"linkName":"doc4.html","type":"4","id":"NTFILE7mMobqqeFMtscTkU","market":"us","size":0},{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000122520819014719/doc4.xml","primary":false,"translateUrl":null,"linkName":"doc4.xml","type":"4","id":"NTFILE13gNWXxT3AFazAFU","market":"us","size":3492}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Statement Of Changes In Beneficial Ownership","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Statement Of Changes In Beneficial Ownership","pubTime":"2019-11-20 00:00","pubTimestamp":1574179200,"title_zh":"Statement of changes in beneficial ownership of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8775333","market":"us","labels":[],"media":"sec.gov","original_id":"AN122520819014714-MDU","pdf_url":null,"pub_time":1574179200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Statement of changes in beneficial ownership of securities","symbol":"MDU","title":"Statement of changes in beneficial ownership of securities","titleType":"Statement Of Changes In Beneficial Ownership","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/67716/000122520819014714/0001225208-19-014714-index.htm","us_notice_code":"Form 4","us_title_en":"Statement of changes in beneficial ownership 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/67716/000122520819014714/xslF345X03/doc4.xml","primary":true,"translateUrl":null,"linkName":"doc4.html","type":"4","id":"NTFILE6JeGTR3DhvTT82MN","market":"us","size":0},{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/67716/000122520819014714/doc4.xml","primary":false,"translateUrl":null,"linkName":"doc4.xml","type":"4","id":"NTFILE8zy8pko6nGQLQGkh","market":"us","size":4180}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Statement Of Changes In Beneficial Ownership","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Statement Of Changes In Beneficial Ownership","pubTime":"2019-11-20 00:00","pubTimestamp":1574179200,"title_zh":"Statement of changes in beneficial ownership of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0}],"pageSize":20,"totalPage":11,"pageCount":8,"totalSize":217,"code":"91000000","status":"200"}]}}