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| 0000067716-24-000081.txt | 2024-08-08 08:32:44 | |
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| FilingSummary.xml | 1666 | 2024-08-08 08:32:44 |
| Financial_Report.xlsx | 5724 | 2024-08-08 08:32:44 |
| mdu-20240808.htm | 24096 | 2024-08-08 08:32:44 |
| mdu-20240808.xsd | 2152 | 2024-08-08 08:32:44 |
| mdu-20240808_def.xml | 14731 | 2024-08-08 08:32:44 |
| mdu-20240808_htm.xml | 2827 | 2024-08-08 08:32:44 |
| mdu-20240808_lab.xml | 26114 | 2024-08-08 08:32:44 |
| mdu-20240808_pre.xml | 15396 | 2024-08-08 08:32:44 |
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| R1.htm | 39860 | 2024-08-08 08:32:44 |
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