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| 0000067716-23-000092-index.html | 2023-08-03 08:34:58 | |
| 0000067716-23-000092.txt | 2023-08-03 08:34:58 | |
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| a2023exhibit99q2dividend.htm | 6840 | 2023-08-03 08:34:58 |
| FilingSummary.xml | 1678 | 2023-08-03 08:34:58 |
| Financial_Report.xlsx | 5716 | 2023-08-03 08:34:58 |
| mdu-20230802.htm | 28016 | 2023-08-03 08:34:58 |
| mdu-20230802.xsd | 2139 | 2023-08-03 08:34:58 |
| mdu-20230802_def.xml | 14764 | 2023-08-03 08:34:58 |
| mdu-20230802_htm.xml | 2827 | 2023-08-03 08:34:58 |
| mdu-20230802_lab.xml | 28553 | 2023-08-03 08:34:58 |
| mdu-20230802_pre.xml | 15384 | 2023-08-03 08:34:58 |
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| R1.htm | 39853 | 2023-08-03 08:34:58 |
| report.css | 2767 | 2023-08-03 08:34:58 |
| Show.js | 1085 | 2023-08-03 08:34:58 |