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| 0000067716-22-000075.txt | 2022-11-22 17:09:25 | |
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| a2022ex99-capexforecast.htm | 34274 | 2022-11-22 17:09:25 |
| FilingSummary.xml | 1693 | 2022-11-22 17:09:25 |
| Financial_Report.xlsx | 5720 | 2022-11-22 17:09:25 |
| mdu-20221122.htm | 32273 | 2022-11-22 17:09:25 |
| mdu-20221122.xsd | 2150 | 2022-11-22 17:09:25 |
| mdu-20221122_def.xml | 14778 | 2022-11-22 17:09:25 |
| mdu-20221122_htm.xml | 11265 | 2022-11-22 17:09:25 |
| mdu-20221122_lab.xml | 28856 | 2022-11-22 17:09:25 |
| mdu-20221122_pre.xml | 15394 | 2022-11-22 17:09:25 |
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| Show.js | 1085 | 2022-11-22 17:09:25 |